CFOP F2L
This page provides an interactive case guide after JavaScript loads; the list below covers every case.
Case recognition
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Basic Inserts — Direct Insert · Right
Connected pair beside the front-right slot — corner white-on-front.
Construct the easy-1 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From this connected pair beside the slot with the corner white-on-front, trigger the right-side insert U R U' R'.
A connected pair in the U layer beside the front-right slot: the corner's white sticker faces front (URF) and the edge's front-color sticker faces up (UR).
White sticker on the front face at URF; the edge standing up (front color on top) right beside it on the right.
One U-adjust brings the pair into open-insert-close geometry — no cube rotation needed.
Open-insert-close on the right: the leading U is the pre-adjust, then R opens the slot, U' slides the pair in, R' closes and seats both pieces.
U-adjust
A U turn brings the connected pair above the front-right slot, lining it up for the open-insert-close trigger. The right variant runs U; the front-face mirror runs U'.
Open-insert-close
The three-move trigger: open the side face to swing the slot open, a U turn slides the pair in, and closing the face seats both pieces. Right variant R U' R'; front variant F' U F.
Chain the leading U straight into the trigger — U (R U' R') is one motion, not a setup pause followed by a three-move insert.
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Basic Inserts — Direct Insert · Left
Connected pair at the front of the slot — corner white-on-right.
Construct the easy-2 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From this connected pair at the front with the corner white-on-right, trigger the front-face mirror U' F' U F.
A connected pair in the U layer at the front of the slot: the corner's white sticker faces right (URF) and the edge's front-color sticker faces front (UF).
White sticker on the right face at URF; the edge's front color showing on the front face at UF.
A U'-adjust lines the pair up for the front-face open-insert-close.
Front-face mirror of the right-side direct insert: the leading U' is the pre-adjust, then F' opens the slot, U slides the pair in, F closes and seats both.
U-adjust
A U turn brings the connected pair above the front-right slot, lining it up for the open-insert-close trigger. The right variant runs U; the front-face mirror runs U'.
Open-insert-close
The three-move trigger: open the side face to swing the slot open, a U turn slides the pair in, and closing the face seats both pieces. Right variant R U' R'; front variant F' U F.
This is the front-face mirror of the right-side direct insert (F2L 01) — same open-insert-close rhythm, opposite side, so the pre-adjust runs U' instead of U.
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Basic Inserts — Three-Step Insert · Right
Corner hooked at URF, white-on-right; edge at the back — a three-move insert, no AUF.
Construct the easy-3 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner hooked at URF (white-on-right) with the edge sitting at the back, trigger the three-move insert R U R'.
The corner at URF with its white sticker facing right (hooked for a right insert), and the edge in the back of the U layer (UB) with its front color up — no AUF needed.
White sticker on the right face at URF; the edge standing at the back with its front color on top.
No AUF — the corner's white-on-right orientation is already the trigger position.
A single open-insert-close: R opens the slot and lifts the corner, U carries the back edge around into the slot's path, R' closes and seats both. The edge does not start adjacent — the U turn is what brings it in.
Three-move insert
The simplest F2L insert — a single open-insert-close: open the side face, a U turn carries the far edge around and seats the pair, then close the face. Right variant R U R'; front variant F' U' F. The edge need not start adjacent — the U turn is what brings it in.
Don't be thrown by the edge sitting at the back: with the corner white-on-right at URF, R U R' resolves it directly, no pre-adjust.
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Basic Inserts — Three-Step Insert · Left
Corner hooked at URF, white-on-front; edge on the left — a three-move insert, no AUF.
Construct the easy-4 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner hooked at URF (white-on-front) with the edge sitting on the left, trigger the front-face three-move F' U' F.
The corner at URF with its white sticker facing front (hooked for a front insert), and the edge on the left of the U layer (UL) with its front color facing left — no AUF needed.
White sticker on the front face at URF; the edge on the left with its front color facing left.
No AUF — the corner's white-on-front orientation already matches the trigger.
Front-face mirror of the right-side three-move insert: F' opens the slot, U' carries the left edge around into the slot's path, F closes and seats both.
Three-move insert
The simplest F2L insert — a single open-insert-close: open the side face, a U turn carries the far edge around and seats the pair, then close the face. Right variant R U R'; front variant F' U' F. The edge need not start adjacent — the U turn is what brings it in.
This is the front-face mirror of the right-side three-move insert (F2L 04) — the edge starts on the left rather than the back, so the carrier runs U' instead of U.
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Reposition Edge — Pair & right insert
Separated pair with the edge at the back of the U layer — corner white-on-front.
Construct the disconnected-5 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-front at URF with the edge standing at the back, trigger the right-side pair-and-insert.
A separated corner and edge in the U layer: the corner at URF with white on front, and the edge at the back (UB) with its front color facing up.
White sticker on the front face at URF; the edge standing at the back of the U layer with its front color on top.
The corner is already above the front-right slot — no recognition AUF. The trigger's leading U' hides the corner off the slot mouth to start the pair-up.
Hide-and-seek pair-up on the right: U' tucks the corner off the slot mouth, R U R' opens the slot and swings the edge around to pair them at the side, U2 carries the pair to the front of the slot, then R U' R' open-insert-close seats both.
Hide the corner
A U turn tucks the corner off the slot's mouth so the upcoming slot-open won't kick it out, and re-parks the edge for the pair-up. Right variant runs U'; the front-face mirror runs U.
Open slot & pair
Open the side face, a U turn swings the edge around into the corner, and closing the face pairs the two pieces at the side of the U layer. Right variant R U R'; front mirror F' U' F.
AUF the pair
A U2 carries the newly-connected pair around to the front of the target slot.
Open-insert-close
The three-move insert: open the side face, a U turn slides the pair in, and closing seats both pieces. Right variant R U' R'; front mirror F' U F.
Four chunks, one rhythm: hide → pair → AUF → insert. The middle U2 is just an AUF for the pair, not a re-pairing move.
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Reposition Edge — Pair & left insert
Separated pair with the edge on the left of the U layer — corner white-on-right.
Construct the disconnected-6 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-right at URF with the edge on the left, trigger the front-face mirror pair-and-insert.
A separated corner and edge: the corner at URF with white on right, and the edge on the left (UL) with its front color facing left.
White sticker on the right face at URF; the edge on the left with its front color facing left.
The corner is already above the slot — no recognition AUF. The trigger's leading U hides the corner off the slot mouth for the front-face pair-up.
Front-face mirror of the right-side pair-and-insert: U tucks the corner off the slot mouth, F' U' F opens the front slot and pairs them, U2 AUFs the pair to the front, then F' U F open-insert-close seats both.
Hide the corner
A U turn tucks the corner off the slot's mouth so the upcoming slot-open won't kick it out, and re-parks the edge for the pair-up. Right variant runs U'; the front-face mirror runs U.
Open slot & pair
Open the side face, a U turn swings the edge around into the corner, and closing the face pairs the two pieces at the side of the U layer. Right variant R U R'; front mirror F' U' F.
AUF the pair
A U2 carries the newly-connected pair around to the front of the target slot.
Open-insert-close
The three-move insert: open the side face, a U turn slides the pair in, and closing seats both pieces. Right variant R U' R'; front mirror F' U F.
This is the front-face mirror of the right-side pair-and-insert (F2L 05) — same hide-pair-AUF-insert rhythm on the F face, so every U inverts.
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Reposition Edge — Re-orient & right insert
Re-orienting separated pair with the edge on the left — corner white-on-front.
Construct the disconnected-7 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-front at URF with the edge on the left (front color up), trigger the re-orienting pair-and-insert.
A separated corner and edge: the corner at URF with white on front, and the edge on the left (UL) with its front color facing up — direct pairing would misalign.
White sticker on the front face at URF; the edge standing on the left with its front color on top.
The corner is already above the slot — no recognition AUF. The leading U' hides the corner and parks the edge for the re-orienting trigger.
Re-orient then pair on the right: U' hides the corner, R U2 R' opens the slot and uses a U2 to flip the corner-edge relationship so they pair correctly (a plain U would misalign them), U2 AUFs the pair to the front, then R U' R' inserts.
Hide the corner
A U turn hides the corner off the slot's mouth and positions the edge for the re-orienting trigger. Right variant U'; front mirror U.
Re-orient & pair
Open the side face, a U2 flips the corner-edge relationship so they pair instead of misaligning, and close — the pieces pair up. Right variant R U2 R'; front mirror F' U2 F.
AUF the pair
A U2 carries the pair around to the front of the slot.
Open-insert-close
The three-move insert: open the side face, a U turn slides the pair in, close to seat both. Right variant R U' R'; front mirror F' U F.
The U2 inside the first trigger is the whole point — it's what lets a white-on-front corner pair with a far edge instead of twisting past it.
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Reposition Edge — Re-orient & left insert
Re-orienting separated pair with the edge at the back — corner white-on-right.
Construct the disconnected-8 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-right at URF with the edge at the back (front color back), trigger the front-face re-orienting pair-and-insert.
A separated corner and edge: the corner at URF with white on right, and the edge at the back (UB) with its front color facing back — direct pairing would misalign.
White sticker on the right face at URF; the edge lying at the back with its front color facing back (not up).
The corner is already above the slot — no recognition AUF. The leading U hides the corner and parks the edge for the front-face re-orient.
Front-face mirror of the right-side re-orienting pair-and-insert: U hides the corner, F' U2 F opens the front slot and uses a U2 to flip the relationship so they pair, U2 AUFs the pair, then F' U F inserts.
Hide the corner
A U turn hides the corner off the slot's mouth and positions the edge for the re-orienting trigger. Right variant U'; front mirror U.
Re-orient & pair
Open the side face, a U2 flips the corner-edge relationship so they pair instead of misaligning, and close — the pieces pair up. Right variant R U2 R'; front mirror F' U2 F.
AUF the pair
A U2 carries the pair around to the front of the slot.
Open-insert-close
The three-move insert: open the side face, a U turn slides the pair in, close to seat both. Right variant R U' R'; front mirror F' U F.
This is the front-face mirror of the right-side re-orienting pair-and-insert (F2L 07) — the re-orienting U2 lives inside F' U2 F instead of R U2 R'.
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Reposition Edge and Flip Corner — Double-trigger right insert
Double-trigger separated pair with the edge on the left — corner white-on-right.
Construct the disconnected-9 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-right at URF with the edge on the left (front color up), trigger the double-right-trigger.
A separated corner and edge: the corner at URF with white on right, and the edge on the left (UL) with its front color facing up.
White sticker on the right face at URF; the edge standing on the left with its front color on top.
The corner is already above the slot — no recognition AUF. The leading U' hides the corner and starts the double-trigger maneuver.
Two right triggers in a row: U' R U R' opens the slot and repositions both pieces, a U brings the corner back to URF hooked over the slot with the edge one turn away, then R U R' is the three-move insert that carries the edge in and seats both.
Hide the corner
A U turn hides the corner off the slot's mouth and shifts the edge. Right variant U'; front mirror U.
Open & reposition
Open the side face and a U turn reposition both pieces — they do not pair here, just line up for the final trigger. Right variant R U R'; front mirror F' U' F.
Hook over the slot
A U turn brings the corner back to URF, hooked over the slot, with the edge one turn away — the three-move-insert shape. Right variant U; front mirror U'.
Three-move insert
The three-move insert: open the side face, the U turn carries the edge in and pairs-and-seats both in one trigger. Right variant R U R'; front mirror F' U' F.
This one never forms a connected pair in the U layer — the second trigger pairs-and-seats in one move, exactly like the three-move-insert family.
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Reposition Edge and Flip Corner — Double-trigger left insert
Double-trigger separated pair with the edge at the back — corner white-on-front.
Construct the disconnected-10 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-front at URF with the edge at the back (front color back), trigger the front-face double-trigger.
A separated corner and edge: the corner at URF with white on front, and the edge at the back (UB) with its front color facing back.
White sticker on the front face at URF; the edge lying at the back with its front color facing back.
The corner is already above the slot — no recognition AUF. The leading U hides the corner and starts the front-face double-trigger.
Front-face mirror of the right-side double-trigger: U F' U' F opens the front slot and repositions the pieces, a U' brings the corner back to URF hooked over the slot, then F' U' F is the three-move insert that seats both.
Hide the corner
A U turn hides the corner off the slot's mouth and shifts the edge. Right variant U'; front mirror U.
Open & reposition
Open the side face and a U turn reposition both pieces — they do not pair here, just line up for the final trigger. Right variant R U R'; front mirror F' U' F.
Hook over the slot
A U turn brings the corner back to URF, hooked over the slot, with the edge one turn away — the three-move-insert shape. Right variant U; front mirror U'.
Three-move insert
The three-move insert: open the side face, the U turn carries the edge in and pairs-and-seats both in one trigger. Right variant R U R'; front mirror F' U' F.
This is the front-face mirror of the right-side double-trigger (F2L 10) — two F-face triggers instead of two R-face triggers.
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Pair Made on Side — Detour & right insert
Detour separated pair with the edge at the back — corner white-on-top.
Construct the disconnected-11 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-top at URF with the edge at the back (front color up), trigger the detour pair-and-insert.
A separated corner and edge with both stickers up: the corner at URF with white on top, and the edge at the back (UB) with its front color facing up.
White sticker on top at URF; the edge standing at the back with its front color also on top — two stickers pointing up.
The corner is already above the slot — no recognition AUF. The leading U parks the pair on the working face for the detour.
Detour on the right: U parks the pieces, R U2 R' opens the slot and sends the corner on a U2 detour around the edge to flip its white-on-top twist so it can pair, U carries the pair to the front, then R U' R' inserts.
Park on working face
A U turn parks the corner and edge on the working face for the detour. Right variant U; front mirror U'.
Detour & pair
Open the side face, a U2 sends the corner on a detour around the edge to flip its white-on-top twist, and close — the pieces pair up. Right variant R U2 R'; front mirror F' U2 F.
AUF the pair
A U turn AUFs the connected pair into insert position over the slot. Right variant U; front mirror U'.
Open-insert-close
The three-move insert: open the side face, a U turn slides the pair in, close to seat both. Right variant R U' R'; front mirror F' U F.
The white-on-top corner can't pair head-on — the U2 inside the first trigger routes it around the edge to re-orient, then it pairs on the way back.
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Pair Made on Side — Detour & left insert
Detour separated pair with the edge on the left — corner white-on-top.
Construct the disconnected-12 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-top at URF with the edge on the left (front color left), trigger the front-face detour pair-and-insert.
A separated corner and edge: the corner at URF with white on top, and the edge on the left (UL) with its front color facing left.
White sticker on top at URF; the edge on the left with its front color facing left.
The corner is already above the slot — no recognition AUF. The leading U' parks the pieces for the front-face detour.
Front-face mirror of the right-side detour pair-and-insert: U' parks the pieces, F' U2 F opens the front slot and sends the corner on a U2 detour to flip its twist and pair, U' carries the pair, then F' U F inserts.
Park on working face
A U turn parks the corner and edge on the working face for the detour. Right variant U; front mirror U'.
Detour & pair
Open the side face, a U2 sends the corner on a detour around the edge to flip its white-on-top twist, and close — the pieces pair up. Right variant R U2 R'; front mirror F' U2 F.
AUF the pair
A U turn AUFs the connected pair into insert position over the slot. Right variant U; front mirror U'.
Open-insert-close
The three-move insert: open the side face, a U turn slides the pair in, close to seat both. Right variant R U' R'; front mirror F' U F.
This is the front-face mirror of the right-side detour pair-and-insert (F2L 19) — the detour runs on the F face.
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Pair Made on Side — Wide-gap & right insert
Wide-gap separated pair with the edge on the left — corner white-on-top.
Construct the disconnected-13 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-top at URF with the edge on the left (front color up), trigger the wide-gap pair-and-insert.
A widely separated corner and edge: the corner at URF with white on top, and the edge on the left (UL) with its front color facing up.
White sticker on top at URF; the edge standing on the left with its front color on top — pieces on nearly opposite sides of the U layer.
The corner is already above the slot — no recognition AUF. The trigger opens with a U2 to close the wide gap before pairing.
Close the gap then pair on the right: U2 swings the far pieces together onto the working face, R U R' opens the slot and pairs them at the side, U carries the pair to the front, then R U' R' inserts.
Close the gap
A U2 swings the far-apart pieces together onto the working face, closing the wide gap before pairing.
Open slot & pair
Open the side face, a U turn swings the edge into the corner, and close — the pieces pair up at the side. Right variant R U R'; front mirror F' U' F.
AUF the pair
A U turn AUFs the pair into insert position over the slot. Right variant U; front mirror U'.
Open-insert-close
The three-move insert: open the side face, a U turn slides the pair in, close to seat both. Right variant R U' R'; front mirror F' U F.
The opening U2 is pure distance-closing — after it the case reads like an ordinary disconnected pair-up.
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Pair Made on Side — Wide-gap & left insert
Wide-gap separated pair with the edge at the back — corner white-on-top.
Construct the disconnected-14 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the corner white-on-top at URF with the edge at the back (front color back), trigger the front-face wide-gap pair-and-insert.
A widely separated corner and edge: the corner at URF with white on top, and the edge at the back (UB) with its front color facing back.
White sticker on top at URF; the edge lying at the back with its front color facing back.
The corner is already above the slot — no recognition AUF. The trigger opens with a U2 to close the wide gap.
Front-face mirror of the right-side wide-gap pair-and-insert: U2 swings the far pieces together, F' U' F opens the front slot and pairs them, U' carries the pair, then F' U F inserts.
Close the gap
A U2 swings the far-apart pieces together onto the working face, closing the wide gap before pairing.
Open slot & pair
Open the side face, a U turn swings the edge into the corner, and close — the pieces pair up at the side. Right variant R U R'; front mirror F' U' F.
AUF the pair
A U turn AUFs the pair into insert position over the slot. Right variant U; front mirror U'.
Open-insert-close
The three-move insert: open the side face, a U turn slides the pair in, close to seat both. Right variant R U' R'; front mirror F' U F.
This is the front-face mirror of the right-side wide-gap pair-and-insert (F2L 21) — the gap-closing U2 is shared, the pair-up runs on the F face.
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Corner in Place, Edge in U — Front extract & right insert
Corner nested in the slot, white-down; edge loose in the U layer, front color up.
Construct the corner-slot-15 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-down corner nested in the slot with the edge's front color up, trigger the front-extract pair-and-insert.
A corner sitting in the front-right slot with its white sticker on the bottom (facing down), and the matching edge free in the U layer with its front color facing up.
The slot reads as solved at a glance — the corner's white sticker is hidden underneath — but the matching edge is still loose in the U layer with its front color on top.
The corner is in the slot, so there is no corner-recognition AUF. The leading U' positions the edge for the front-face extraction.
Front-extract then insert on the right: U' parks the edge in the U layer, R' F R F' (the sledgehammer) is the four-move front-face technique that hooks the white-down corner out of the slot — a plain right trigger cannot lift a nested corner — and leaves corner and edge paired in the U layer, then R U R' is the three-move open-insert-close that seats both.
Position the edge
A U turn positions the edge in the U layer for the front-face extraction. Right variant runs U'; the front-face mirror runs U.
Front-face extract
The four-move front-face sledgehammer hooks the white-down corner out of the slot and brings it alongside the edge — a plain right trigger cannot lift a nested corner. Right variant R' F R F'; front-face mirror F R' F' R.
Open-insert-close
The three-move insert: open the side face, a U turn carries the edge in and seats the pair, close to finish. Right variant R U R'; front-face mirror F' U' F.
White-down corners are the reason the sledgehammer exists: R' F R F' is the clean way to pop a nested corner out without scattering the edge.
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Corner in Place, Edge in U — Front extract & left insert
Corner nested in the slot, white-down; edge loose in the U layer, front color facing front.
Construct the corner-slot-16 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-down corner nested in the slot with the edge's front color facing front, trigger the front-face mirror front-extract.
A corner sitting in the front-right slot with its white sticker facing down, and the matching edge free in the U layer with its front color facing front.
The same white-down nested corner, but the loose edge shows its front color on the front face instead of on top.
The corner is in the slot — no corner-recognition AUF. The leading U positions the edge for the front-face mirror extraction.
Front-face mirror of the front-extract pair-and-insert: U parks the edge, F R' F' R is the mirrored sledgehammer that hooks the white-down corner out of the slot, then F' U' F is the three-move open-insert-close on the front face.
Position the edge
A U turn positions the edge in the U layer for the front-face extraction. Right variant runs U'; the front-face mirror runs U.
Front-face extract
The four-move front-face sledgehammer hooks the white-down corner out of the slot and brings it alongside the edge — a plain right trigger cannot lift a nested corner. Right variant R' F R F'; front-face mirror F R' F' R.
Open-insert-close
The three-move insert: open the side face, a U turn carries the edge in and seats the pair, close to finish. Right variant R U R'; front-face mirror F' U' F.
This is the front-face mirror of the front-extract pair-and-insert (F2L 25) — same nested-corner problem, every move mirrored to the front face.
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Corner in Place, Edge in U — Right extract & re-pair
Corner in the slot, white-on-front; edge loose in the U layer, front color up.
Construct the corner-slot-17 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-on-front corner in the slot with the edge's front color up, trigger the right-extract-and-re-pair.
A corner in the front-right slot with its white sticker facing front, and the matching edge free in the U layer with its front color facing up.
The corner's white sticker is visible on the front face of the slot; the edge stands in the U layer with its front color on top.
The corner is in the slot — no recognition AUF. The extraction trigger opens directly, and the U inside the sequence re-pairs after extraction.
Right-extract then re-pair on the right: R U' R' lifts the white-on-front corner out of the slot while keeping the edge in place, a U turn carries the extracted corner and the edge into alignment over the slot, then R U' R' is the three-move insert that seats the pair. It feels like two right triggers stitched together by a U.
Right-extract
A single right trigger lifts the sideways-tilted corner out of the slot while keeping the edge in place. Right variant R U' R'; front-face mirror F' U F.
Re-pair AUF
A U turn carries the extracted corner and the edge into alignment over the slot. Right variant U; front-face mirror U'.
Open-insert-close
The three-move insert: open the side face, a U turn seats the pair, close to finish. Right variant R U' R'; front-face mirror F' U F.
Two right triggers with a U in between — the first pops the corner out, the U re-pairs, the second seats the pair.
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Corner in Place, Edge in U — Left extract & re-pair
Corner in the slot, white-on-right; edge loose in the U layer, front color facing front.
Construct the corner-slot-18 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-on-right corner in the slot with the edge's front color facing front, trigger the front-face mirror right-extract.
A corner in the front-right slot with its white sticker facing right, and the matching edge free in the U layer with its front color facing front.
The corner's white sticker is visible on the right face of the slot; the edge lies in the U layer with its front color on the front face.
The corner is in the slot — no recognition AUF. The front-face extraction trigger opens directly, and the U' inside the sequence re-pairs after extraction.
Front-face mirror of the right-extract-and-re-pair: F' U F lifts the white-on-right corner out of the slot, a U' turn re-aligns corner and edge over the slot, then F' U F is the three-move insert on the front face.
Right-extract
A single right trigger lifts the sideways-tilted corner out of the slot while keeping the edge in place. Right variant R U' R'; front-face mirror F' U F.
Re-pair AUF
A U turn carries the extracted corner and the edge into alignment over the slot. Right variant U; front-face mirror U'.
Open-insert-close
The three-move insert: open the side face, a U turn seats the pair, close to finish. Right variant R U' R'; front-face mirror F' U F.
This is the front-face mirror of the right-extract-and-re-pair (F2L 27) — two front triggers with a U' in between.
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Corner in Place, Edge in U — Extract, reverse-adjust & right insert
Corner in the slot, white-on-right; edge loose in the U layer, front color up.
Construct the corner-slot-19 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-on-right corner in the slot with the edge's front color up, trigger the extract-and-reverse-adjust.
A corner in the front-right slot with its white sticker facing right (not front), and the matching edge free in the U layer with its front color facing up — the same edge look as the clean right-extract case, but a different corner white-direction.
The corner's white sticker is visible on the right face of the slot; the edge stands in the U layer with its front color on top.
The corner is in the slot — no recognition AUF. The extraction uses a forward U (R U R', not R U' R'), and a reverse U' then realigns the pair.
Right-extract, reverse-adjust, insert on the right: R U R' lifts the white-on-right corner out with a FORWARD U, which leaves the pair offset, U' reverse-adjusts the corner-edge relationship so they realign, then R U R' is the three-move insert. The U/U' alternation is what flips the pairing orientation.
Right-extract (forward U)
A right trigger with a FORWARD U (not U') lifts the corner out — the forward U is what leaves the pair offset for the reverse-adjust. Right variant R U R'; front-face mirror F' U' F.
Reverse-adjust
A U turn reverse-adjusts the corner-edge relationship so they realign for the insert. Right variant U'; front-face mirror U.
Open-insert-close
The three-move insert: open the side face, a U turn seats the pair, close to finish. Right variant R U R'; front-face mirror F' U' F.
The forward-U extraction is the tell — a white-on-right corner whose clean extract won't pair is the reverse-adjust case, not the clean-extract case (F2L 27).
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Corner in Place, Edge in U — Extract, reverse-adjust & left insert
Corner in the slot, white-on-front; edge loose in the U layer, front color facing front.
Construct the corner-slot-20 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-on-front corner in the slot with the edge's front color facing front, trigger the front-face mirror extract-and-reverse-adjust.
A corner in the front-right slot with its white sticker facing front, and the matching edge free in the U layer with its front color facing front.
The corner's white sticker is visible on the front face of the slot; the edge lies in the U layer with its front color on the front face.
The corner is in the slot — no recognition AUF. The front-face extraction uses a forward U' (F' U' F), and a reverse U realigns the pair.
Front-face mirror of the extract-and-reverse-adjust: F' U' F lifts the white-on-front corner out with a forward U', U reverse-adjusts the pair, then F' U' F is the three-move insert on the front face.
Right-extract (forward U)
A right trigger with a FORWARD U (not U') lifts the corner out — the forward U is what leaves the pair offset for the reverse-adjust. Right variant R U R'; front-face mirror F' U' F.
Reverse-adjust
A U turn reverse-adjusts the corner-edge relationship so they realign for the insert. Right variant U'; front-face mirror U.
Open-insert-close
The three-move insert: open the side face, a U turn seats the pair, close to finish. Right variant R U R'; front-face mirror F' U' F.
This is the front-face mirror of the extract-and-reverse-adjust (F2L 30) — the U/U' alternation runs inverted on the front face.
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Edge in Place, Corner in U — Triple right trigger
Oriented edge wedged in the front-right slot — corner white-up.
Construct the edge-slot-21 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-up corner with an oriented edge (front color facing front) wedged in the slot, trigger the triple-right-trigger extract-pair-insert.
An edge sitting in the front-right slot with its front-color sticker facing front (oriented), and the matching corner free in the U layer with its white sticker facing up.
The slot reads as filled at a glance — the edge is in place with its front color on the front face — but the matching corner is still loose in the U layer, white-up.
The corner is white-up in the U layer. There is no separate recognition AUF — the leading U is the first trigger's lead-in that begins cycling the edge.
Extract-pair-insert as three right triggers run back-to-back: U R U' R' × 3. The oriented edge wedged in the slot resists a single trigger, so the repetitions progressively work it free while the white-up corner stays in play, and the final trigger pairs the edge with the corner and seats them together. It feels like the same trigger done three times in a row.
First right trigger
The first right trigger U R U' R': a U positions the white-up corner, then opening and closing the right face begins cycling the oriented edge out of the slot.
Second right trigger
The second right trigger U R U' R' continues working the wedged edge free of the slot while the corner stays in play.
Third right trigger
The third right trigger U R U' R' completes the extract, pairs the edge with the corner, and seats both pieces into the slot.
This is the one F2L case where 'do the trigger, do it again, do it a third time' is literally the solution — a white-up corner with an oriented edge wedged in the slot needs the full three-trigger cycle.
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Edge in Place, Corner in U — Sledgehammer extract & right insert
Flipped edge wedged in the front-right slot — corner white-up.
Construct the edge-slot-22 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-up corner with a flipped edge (front color facing right) wedged in the slot, trigger the front-sledgehammer-extract-then-right-insert.
An edge sitting in the front-right slot with its front-color sticker facing right (flipped), and the matching corner free in the U layer with its white sticker facing up.
The slot reads as filled at a glance, but the edge's front color is on the right face instead of the front — the edge is flipped in the slot — while the matching corner sits white-up in the U layer.
The corner is white-up in the U layer. The leading U' is the recognition turn that positions the corner for the front-face extraction.
Extract via the front-face sledgehammer, then insert on the right: U' positions the corner, R' F R F' is the four-move front-face technique that hooks the flipped edge out of the slot — a plain right trigger cannot extract a flipped edge — and leaves corner and edge paired in the U layer, then R U' R' is the three-move open-insert-close that seats both.
Position the corner
A U' positions the white-up corner for the front-face extraction.
Front-face sledgehammer extract
The four-move front-face sledgehammer R' F R F' hooks the flipped edge out of the slot — a plain right trigger cannot extract a flipped edge — and brings it alongside the corner.
Open-insert-close
The three-move right insert R U' R' seats the now-paired corner and edge into the slot.
The sledgehammer R' F R F' is the same technique used to extract white-down nested corners (F2L 25) — it hooks a flipped-in-slot edge out just as cleanly.
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Edge in Place, Corner in U — Right extract, U2 realign & right insert
Oriented edge in the front-right slot — corner white-on-front.
Construct the edge-slot-23 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-on-front corner with an oriented edge (front color facing front) wedged in the slot, trigger the extract-into-disconnected-then-realign.
An edge sitting in the front-right slot with its front-color sticker facing front (oriented), and the matching corner free in the U layer with its white sticker facing front.
The edge sits in the slot with its front color on the front face (oriented); the corner stands in the U layer with its white sticker on the front face.
The corner is white-on-front in the U layer. The leading U' is the recognition turn that positions the corner for the right-side extraction.
Extract, realign, insert: U' positions the corner, R U' R' extracts the oriented edge from the slot — but the pieces land disconnected in the U layer — U2 carries them into the standard disconnected pairing geometry, then R U' R' is the three-move open-insert-close that seats the pair. It reads as 'extract the edge, then solve the disconnected case.'
Position the corner
A U' positions the white-on-front corner for the right-side extraction.
Right extract
The right trigger R U' R' extracts the oriented edge from the slot — but the pieces land disconnected in the U layer.
U2 to disconnected pairing
A U2 carries the disconnected corner and edge into the standard disconnected pairing geometry.
Open-insert-close
The three-move right insert R U' R' seats the realigned pair into the slot.
When extracting an in-slot edge leaves the pair disconnected, the U2 is the tell — it converts the extracted edge into a standard disconnected pair before the insert.
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Edge in Place, Corner in U — Forward-U extract, U2 realign & right insert
Oriented edge in the front-right slot — corner white-on-right.
Construct the edge-slot-24 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-on-right corner with an oriented edge (front color facing front) wedged in the slot, trigger the forward-U-extract-into-disconnected-then-realign.
An edge sitting in the front-right slot with its front-color sticker facing front (oriented), and the matching corner free in the U layer with its white sticker facing right — the same oriented edge as its mirror, but with a white-on-right corner.
The edge sits in the slot with its front color on the front face (oriented), matching its mirror's oriented edge; the corner stands in the U layer with its white sticker on the right face instead of the front.
The corner is white-on-right in the U layer. The leading U is the recognition turn that positions the corner for the forward-U extraction.
Extract, realign, insert: U positions the corner, R U R' extracts the oriented edge with a FORWARD U — the pair lands disconnected — U2 carries them into the standard disconnected pairing geometry, then R U R' is the three-move open-insert-close. The forward-U extraction (not U') is the only structural difference from its mirror.
Position the corner
A U positions the white-on-right corner for the forward-U extraction.
Forward-U right extract
The right trigger with a FORWARD U, R U R', extracts the oriented edge from the slot — the pair lands disconnected.
U2 to disconnected pairing
A U2 carries the disconnected corner and edge into the standard disconnected pairing geometry.
Open-insert-close
The three-move right insert R U R' seats the realigned pair into the slot.
This is the white-on-right counterpart of the white-on-front oriented-edge case (F2L 33) — same oriented edge, same U2 realign, but the extraction U flips direction to match the corner's white direction.
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Edge in Place, Corner in U — Right extract & front insert
Flipped edge in the front-right slot — corner white-on-front.
Construct the edge-slot-25 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-on-front corner with a flipped edge (front color facing right) wedged in the slot, trigger the right-extract-then-front-insert.
An edge sitting in the front-right slot with its front-color sticker facing right (flipped), and the matching corner free in the U layer with its white sticker facing front.
The edge sits in the slot flipped, with its front color on the right face; the corner stands in the U layer with its white sticker on the front face.
The corner is white-on-front in the U layer. The leading U2 is the recognition turn that carries the corner to the working position for the right-side extraction.
Extract on the right, insert on the front: U2 carries the corner to the working position, R U R' extracts the flipped edge — the pair's orientation after extraction suits the front face — then F R' F' R is the four-move front-face open-insert-close that seats the pair.
Carry corner to working position
A U2 carries the white-on-front corner to the working position for the right-side extraction.
Right extract
The right trigger R U R' extracts the flipped edge — the pair's orientation after extraction suits the front face.
Front-face insert
The four-move front-face open-insert-close F R' F' R seats the pair through the front face.
When the edge is flipped in the slot and the corner is white-on-front, the pair lands front-face-ready after a right extraction — that is why this case inserts on the front instead of the right.
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Edge in Place, Corner in U — Front extract & right insert
Flipped edge in the front-right slot — corner white-on-right.
Construct the edge-slot-26 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a white-on-right corner with a flipped edge (front color facing right) wedged in the slot, trigger the front-extract-then-right-insert.
An edge sitting in the front-right slot with its front-color sticker facing right (flipped), and the matching corner free in the U layer with its white sticker facing right — the same flipped edge as its mirror, but with a white-on-right corner.
The edge sits in the slot flipped, with its front color on the right face, matching its mirror's flipped edge; the corner stands in the U layer with its white sticker on the right face instead of the front.
The corner is white-on-right in the U layer. The leading U2 is the recognition turn that carries the corner to the working position for the front-face extraction.
Extract on the front, insert on the right: U2 carries the corner to the working position, F' U' F extracts the flipped edge through the front face — the pair lands right-face-ready — then U R U' R' is the three-move right open-insert-close that seats the pair.
Carry corner to working position
A U2 carries the white-on-right corner to the working position for the front-face extraction.
Front-face extract
The front trigger F' U' F extracts the flipped edge through the front face — the pair lands right-face-ready.
Right insert
A U aligns the pair over the slot, then R U' R' is the three-move right open-insert-close that seats both.
This is the white-on-right counterpart of the white-on-front flipped-edge case (F2L 35) — same flipped edge, but the extraction and insertion faces swap to match the corner's white direction.
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Reposition Edge and Flip Corner — Break, re-pair & right insert
Connected pair at the slot's mouth at the wrong angle — corner white-on-right.
Construct the connected-27 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected pair at the slot's mouth (corner white-right, edge front-color-up on the front-top edge), trigger the break-reangle-reform-insert.
A corner at URF with its white sticker facing right, and the matching edge on the front-top edge with its front-color sticker facing up — the pieces touch but are angled wrong for a direct insert.
The pair reads as 'almost ready' — corner and edge touch at the slot's mouth — but the corner's white is on the right face and the edge's front color is on top, so they will not drop in cleanly.
No recognition AUF — the pair already sits at the slot's mouth. The algorithm opens directly with the breakup trigger.
Break, re-angle, reform, insert on the right: R U' R' breaks the touching pair apart, U R U' R' repositions the loose pieces and re-forms them as a correctly-aligned pair in the U layer, then U2 R U' R' is the U2 AUF plus three-move open-insert-close that seats both.
Break the pair
Open the side face and a U' turn pulls the touching pair apart — the pieces separate in the U layer so they can be re-angled. Right variant R U' R'; front mirror F' U F.
Re-angle & re-pair
A U repositions the loose pieces, then a right trigger re-forms them as a correctly-aligned pair in the U layer. Right variant U R U' R'; front mirror U' F' U F.
Open-insert-close
A U2 AUFs the reformed pair over the slot, then the three-move open-insert-close seats both pieces. Right variant U2 R U' R'; front mirror U2 F' U F.
The first trigger here is a breakup, not an insert — when you read 'connected' but the orientation is wrong, expect to break the pair before reforming it.
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Reposition Edge and Flip Corner — Break, re-pair & left insert
Connected pair at the slot's mouth at the wrong angle — corner white-on-front.
Construct the connected-28 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected pair at the slot's mouth (corner white-front, edge front-color-right on the right-top edge), trigger the front-face mirror break-reangle-reform-insert.
A corner at URF with its white sticker facing front, and the matching edge on the right-top edge with its front-color sticker facing right — the front-face mirror of the right-side break-and-reform case.
The mirror image of the right-side break-and-reform case: the pair touches at the slot's mouth, but the corner's white is on the front face and the edge's front color is on the right face.
No recognition AUF — the mirrored pair already sits at the slot's mouth. The algorithm opens directly with the front-face breakup trigger.
Front-face mirror of the right-side break-and-reform case: F' U F breaks the pair, U' F' U F repositions and re-forms the correct pair, then U2 F' U F is the U2 AUF plus three-move front-face open-insert-close.
Break the pair
Open the side face and a U' turn pulls the touching pair apart — the pieces separate in the U layer so they can be re-angled. Right variant R U' R'; front mirror F' U F.
Re-angle & re-pair
A U repositions the loose pieces, then a right trigger re-forms them as a correctly-aligned pair in the U layer. Right variant U R U' R'; front mirror U' F' U F.
Open-insert-close
A U2 AUFs the reformed pair over the slot, then the three-move open-insert-close seats both pieces. Right variant U2 R U' R'; front mirror U2 F' U F.
This is the front-face mirror of the right-side break-and-reform case (F2L 12) — same break-reform-insert story, every move mirrored to the front face.
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Reposition Edge and Flip Corner — Split & reverse re-pair, right
Connected pair needing a split and reverse re-pair — corner white-on-right.
Construct the connected-29 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected pair at the slot's mouth with the edge on the right-top (corner white-right, edge front-color-up), trigger the split-and-reverse-re-pair.
A corner at URF with its white sticker facing right, and the matching edge on the right-top edge (not the front-top) with its front-color sticker facing up — same corner look as the right-side break-and-reform case, but the edge is on the right side.
The pair touches at the slot's mouth with the corner's white on the right; the edge runs along the right face's top edge (not the front), signaling the split-and-reverse case rather than the break-and-reform case.
The leading U' is the recognition turn that parks the connected pair on the back working face for the split.
Split, reverse re-pair, insert on the right: U' parks the pair on the working face, R U' R' splits it apart, then U R U R' — note both U turns run forward — re-forms the pair in the reversed orientation and seats it in one motion.
AUF to working face
A U turn parks the connected pair on the working face for the split. Right variant U'; front mirror U.
Split the pair
Open the side face and a U' turn splits the pair apart in the U layer. Right variant R U' R'; front mirror F' U F.
Reverse re-pair & insert
A U turn, then a right trigger whose U runs the SAME direction (both U turns forward) re-forms the pair in the reversed orientation and seats it in one motion. Right variant U R U R'; front mirror U' F' U' F.
The double forward-U (the U and the inner U of U R U R') is the tell that the re-pair runs in reverse — that is what distinguishes this case from the right-side break-and-reform case (F2L 12).
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Reposition Edge and Flip Corner — Split & reverse re-pair, left
Connected pair needing a split and reverse re-pair — corner white-on-front.
Construct the connected-30 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected pair at the slot's mouth with the edge on the front-top (corner white-front, edge front-color-front), trigger the front-face mirror split-and-reverse-re-pair.
A corner at URF with its white sticker facing front, and the matching edge on the front-top edge with its front-color sticker facing front — the front-face mirror of the right-side split-and-reverse case.
The mirror image of the right-side split-and-reverse case: the pair touches at the slot's mouth with the corner's white on the front and the edge along the front face's top edge.
The leading U is the recognition turn that parks the mirrored pair on the back working face for the front-face split.
Front-face mirror of the right-side split-and-reverse case: U parks the pair, F' U F splits it, then U' F' U' F — both U turns running the same way — re-forms the pair in reverse and seats it through the front face.
AUF to working face
A U turn parks the connected pair on the working face for the split. Right variant U'; front mirror U.
Split the pair
Open the side face and a U' turn splits the pair apart in the U layer. Right variant R U' R'; front mirror F' U F.
Reverse re-pair & insert
A U turn, then a right trigger whose U runs the SAME direction (both U turns forward) re-forms the pair in the reversed orientation and seats it in one motion. Right variant U R U R'; front mirror U' F' U' F.
This is the front-face mirror of the right-side split-and-reverse case (F2L 14) — same split-and-reverse story, mirrored to the front face.
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Split Pair by Going Over — Slot-drop, extract & right insert
Connected pair whose opening move drops the corner into the slot — corner white-on-front.
Construct the connected-31 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected pair at the slot's mouth (corner white-front, edge front-color-up on the front-top), trigger the slot-drop-reposition-extract-and-insert.
A corner at URF with its white sticker facing front, and the matching edge on the front-top edge with its front-color sticker facing up — a connected pair whose opening move parks the corner into the slot rather than breaking it in the U layer.
The pair touches at the slot's mouth with the corner's white on the front; unlike the break-and-reform cases, this one routes the corner down into the slot first.
No recognition AUF — the pair already sits at the slot's mouth. The opening forward-U trigger parks the corner into the slot.
Park-corner-in-slot, reposition, extract-and-insert on the right: R U R' drops the corner into the slot and swings the edge to the far side (the pair does NOT stay connected here), U2 repositions the edge over the slot, then R U' R' U R U' R' — two right triggers stitched by a U — extracts the corner, pairs it with the edge, and seats both.
Park corner in slot
Open the side face and a forward U parks the corner down into the slot while the edge swings to the far side — the pair does NOT stay connected here. Right variant R U R'; front mirror F' U' F.
Reposition over slot
A U2 repositions the edge over the target slot so the closing trigger can extract the corner and pair them.
Extract, pair & insert
Two right triggers (R U' R') stitched by a U: the first extracts the corner from the slot, the U aligns it with the edge, the second pairs and seats both. Right variant R U' R' U R U' R'; front mirror F' U F U' F' U F.
Do not expect the pair to survive the opening trigger here — this case routes the corner through the slot by design, then rebuilds the pair with the closing double trigger.
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Split Pair by Going Over — Slot-drop, extract & left insert
Connected pair whose opening move drops the corner into the slot — corner white-on-right.
Construct the connected-32 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected pair at the slot's mouth (corner white-right, edge front-color-right on the right-top), trigger the front-face mirror slot-drop-extract-and-insert.
A corner at URF with its white sticker facing right, and the matching edge on the right-top edge with its front-color sticker facing right — the front-face mirror of the right-side slot-drop case.
The mirror image of the right-side slot-drop case: the pair touches at the slot's mouth with the corner's white on the right, and the opening move routes the corner down into the slot.
No recognition AUF — the mirrored pair already sits at the slot's mouth. The opening front-face trigger parks the corner into the slot.
Front-face mirror of the right-side slot-drop case: F' U' F drops the corner into the slot and swings the edge across, U2 repositions the edge, then F' U F U' F' U F — two front triggers stitched by a U' — extracts, pairs, and seats both through the front face.
Park corner in slot
Open the side face and a forward U parks the corner down into the slot while the edge swings to the far side — the pair does NOT stay connected here. Right variant R U R'; front mirror F' U' F.
Reposition over slot
A U2 repositions the edge over the target slot so the closing trigger can extract the corner and pair them.
Extract, pair & insert
Two right triggers (R U' R') stitched by a U: the first extracts the corner from the slot, the U aligns it with the edge, the second pairs and seats both. Right variant R U' R' U R U' R'; front mirror F' U F U' F' U F.
This is the front-face mirror of the right-side slot-drop case (F2L 15) — the corner routes through the slot, then the double front-face trigger rebuilds the pair.
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Split Pair by Going Over — Wide U2 breakup & right insert
Connected pair, corner white-up — re-angled with a wide right-side U2 arc breakup.
Construct the connected-33 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected pair at the slot's mouth (corner white-up, edge front-color-up on the right-top), trigger the wide-arc-breakup-then-insert.
A corner at URF with its white sticker facing up, and the matching edge on the right-top edge with its front-color sticker facing up — a white-up corner signals the wide-arc breakup.
The pair touches at the slot's mouth but the corner's white is on top — the breakup uses a wide U2 arc, not a single-U trigger.
No recognition AUF — the pair already sits at the slot's mouth. The opening trigger is the wide U2 breakup itself.
Wide breakup, adjust, insert on the right: R U2 R' sends the corner on a wide U2 arc that breaks the pair apart, U' adjusts the loose pieces to the insert angle, then R U R' is the three-move open-insert-close that seats both.
Wide-arc breakup
Open the side face and a U2 sends the corner on a wide arc that breaks the pair apart, then close. Right variant R U2 R'; front mirror F' U2 F.
Adjust to insert angle
A U turn adjusts the broken-up pieces to the standard insert angle. Right variant U'; front mirror U.
Open-insert-close
The three-move insert: open the side face, a U slides the pair in, close to seat both. Right variant R U R'; front mirror F' U' F.
White-up corners take a wider re-angle — when the connected pair has the corner white-up, the U2 in the opening trigger is what makes the breakup reach far enough.
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Split Pair by Going Over — Wide U2 breakup & left insert
Connected pair, corner white-up — front-face mirror of the wide U2 arc breakup.
Construct the connected-34 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected pair at the slot's mouth (corner white-up, edge front-color-front on the front-top), trigger the front-face mirror wide-arc-breakup-then-insert.
A corner at URF with its white sticker facing up, and the matching edge on the front-top edge with its front-color sticker facing front — the front-face mirror of the right-side wide-arc-breakup case.
The mirror image of the right-side wide-arc-breakup case: the pair touches at the slot's mouth with the corner's white on top, signaling the wide front-face U2 breakup.
No recognition AUF — the mirrored pair already sits at the slot's mouth. The opening front-face trigger is the wide U2 breakup.
Front-face mirror of the right-side wide-arc-breakup case: F' U2 F breaks the pair with a wide front-face arc, U adjusts the pieces to the insert angle, then F' U' F is the three-move front-face open-insert-close.
Wide-arc breakup
Open the side face and a U2 sends the corner on a wide arc that breaks the pair apart, then close. Right variant R U2 R'; front mirror F' U2 F.
Adjust to insert angle
A U turn adjusts the broken-up pieces to the standard insert angle. Right variant U'; front mirror U.
Open-insert-close
The three-move insert: open the side face, a U slides the pair in, close to seat both. Right variant R U R'; front mirror F' U' F.
This is the front-face mirror of the right-side wide-arc-breakup case (F2L 17) — same white-up wide-arc breakup, mirrored to the front face.
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Weird — Mis-pair split, re-angle & insert
Connected pair touching but paired backwards — corner white-up, right-side split.
Construct the connected-35 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected-but-backwards pair at the slot's mouth (corner white-up, edge front-color-up on the front-top), trigger the split-reangle-reform-insert.
A corner at URF with its white sticker facing up, and the matching edge on the front-top edge with its front-color sticker facing up — same sticker look as the right-side wide-arc-breakup case, but the edge is on the front-top (not the right-top), marking the backwards-pair case.
The pair touches at the slot's mouth with the corner's white on top, but the edge sits on the front-top — the pieces are paired backwards and need a split plus an extra re-angle trigger, not a single wide breakup.
The leading U is the recognition turn that parks the backwards pair on the working face for the split.
Split the backwards pair, re-angle, reform, insert on the right: U parks the pair, R U' R' splits it, U' R U' R' re-angles the loose pieces back into the correct pairing, then U R U' R' is the three-move open-insert-close that seats both.
AUF to working face
A U turn parks the backwards pair on the working face for the split. Right variant U; front mirror U'.
Split the backwards pair
Open the side face and a U' turn splits the backwards pair apart. Right variant R U' R'; front mirror F' U F.
Re-angle & re-pair
A U' turn, then a right trigger whose U runs forward re-angles the loose pieces back into the correct pairing. Right variant U' R U' R'; front mirror U F' U F.
Open-insert-close
A U AUFs the reformed pair over the slot, then the three-move open-insert-close seats both. Right variant U R U' R'; front mirror U' F' U F.
This case looks like the right-side wide-arc-breakup case (F2L 17) — both white-up with front-color-up — but the edge on the front-top, not the right-top, is the tell that the pair is backwards and needs the extra re-angle trigger.
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Weird — Mis-pair split, re-angle & insert (left)
Connected pair touching but paired backwards — corner white-up, front-face split.
Construct the connected-36 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a connected-but-backwards pair at the slot's mouth (corner white-up, edge front-color-right on the right-top), trigger the front-face mirror split-reangle-reform-insert.
A corner at URF with its white sticker facing up, and the matching edge on the right-top edge with its front-color sticker facing right — the front-face mirror of the right-side backwards-pair case.
The mirror image of the right-side backwards-pair case: the pair touches at the slot's mouth with the corner's white on top, and the edge sits on the right-top, paired backwards.
The leading U' is the recognition turn that parks the mirrored backwards pair on the working face for the front-face split.
Front-face mirror of the right-side backwards-pair case: U' parks the pair, F' U F splits the backwards pair, U F' U F re-angles into the correct pairing, then U' F' U F is the three-move front-face open-insert-close.
AUF to working face
A U turn parks the backwards pair on the working face for the split. Right variant U; front mirror U'.
Split the backwards pair
Open the side face and a U' turn splits the backwards pair apart. Right variant R U' R'; front mirror F' U F.
Re-angle & re-pair
A U' turn, then a right trigger whose U runs forward re-angles the loose pieces back into the correct pairing. Right variant U' R U' R'; front mirror U F' U F.
Open-insert-close
A U AUFs the reformed pair over the slot, then the three-move open-insert-close seats both. Right variant U R U' R'; front mirror U' F' U F.
This is the front-face mirror of the right-side backwards-pair case (F2L 23) — same backwards-pair split-and-re-angle story on the front face.
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Edge and Corner in Place — Extract, re-pair & re-insert (white-front)
Both-in-slot mis-pair with the corner white-on-front — extract, re-pair, re-insert.
Construct the pieces-37 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a both-in-slot mis-pair (corner white-front, edge front-color-front), trigger the extract-repair-reinsert.
The front-right slot looks filled but is not solved: the corner's white sticker faces front and the edge's front-color sticker faces front, both wedged in the slot and twisted against each other.
A slot that reads 'full' at a glance — both pieces home — but the stickers are wrong, telling you the pair is mis-twisted in place rather than missing.
No recognition AUF — the mis-pair is already in the slot. The algorithm opens directly with the extraction trigger.
Extract both, re-pair, re-insert on the right: R U' R' pulls the mis-twisted corner and edge out of the slot into the U layer, U' R U R' re-aims their relationship so they pair correctly, then U2 R U' R' is the U2 AUF plus three-move open-insert-close that seats both.
Extract both out of the slot
Open the right face and a U' turn lifts the mis-twisted corner and edge together OUT of the slot into the U layer so they can be re-paired. (R U' R')
Re-pair in the U layer
A U' repositions the loose pieces, then a right trigger re-aims the corner-edge relationship so they pair correctly in the U layer. (U' R U R')
AUF & insert
A U2 carries the reformed pair over the slot, then the three-move open-insert-close seats both pieces. (U2 R U' R')
When a slot looks full but unsolved, the answer is always extract → re-pair → re-insert — never try to twist the pieces in place.
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Edge and Corner in Place — Extract, rebuild pair & re-insert (white-right)
Both-in-slot mis-pair with the corner white-on-right — needs a U2 rebuild.
Construct the pieces-38 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From a both-in-slot mis-pair (corner white-right, edge front-color-front), trigger the extract-rebuild-reinsert.
The front-right slot is filled but unsolved: the corner's white sticker faces RIGHT (not front) and the edge's front-color faces front — the white-right twist marks the wider-rebuild case.
A full-but-unsolved slot with the corner's white on the right face (not the front) — the deeper twist that needs the U2 rebuild rather than a single-U re-pair.
No recognition AUF — the mis-pair is already in the slot. The algorithm opens directly with the extraction trigger.
Extract both, rebuild the pair, re-insert on the right: R U' R' pulls the pair out into the U layer, U R U2 R' rebuilds it with the correct orientation (the U2 is what flips the deeper white-right twist — the key difference from the shallower single-U re-pair), then U R U' R' is the U AUF plus three-move insert.
Extract both out of the slot
Open the right face and a U' lifts the mis-twisted corner and edge together OUT of the slot into the U layer. (R U' R')
Rebuild the pair (U2)
A U repositions, then a right trigger with a U2 flips the deeper white-right twist and rebuilds the pair in the correct orientation — the U2 is what distinguishes this deeper rebuild from a single-U re-pair. (U R U2 R')
AUF & insert
A U AUFs the rebuilt pair over the slot, then the three-move open-insert-close seats both pieces. (U R U' R')
This case looks like the white-on-front side-twist variant (F2L 39) — both are full-slot mis-pairs — but the corner's white on the RIGHT tells you the twist is deeper and the rebuild needs the U2.
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Edge and Corner in Place — Trapped (white-down), d-layer keyhole finish
Both-in-slot trap, corner white-down — solved by a late d-layer keyhole finish.
Construct the pieces-39 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the trapped both-in-slot case (corner white-down, edge front-color-front), trigger the d-layer-keyhole-finish.
The front-right slot is filled but unsolved with the corner's white sticker buried facing DOWN — the deepest, most trapped twist. The other two routes share this EXACT recognition and solve the same trap with a y' cube rotation or an early d-layer move instead.
A full-but-unsolved slot where the corner's white is nowhere on the side faces — it is buried at the bottom — signaling the trapped case that needs a d-layer or rotation assist rather than plain R/U extraction.
No recognition AUF — the trapped pair is already in the slot. The algorithm opens directly with the extraction trigger.
Extract, loosen, then d-layer keyhole finish: R U' R' pulls the pair partway out, U' R U' R' continues loosening the wedged mis-pair, then d R' U' R uses a `d` turn — a rotation of the BOTTOM TWO LAYERS that slides the working slot under the U layer without disturbing the solved pairs above — to bring the pair into an insertable position and seat it.
Extract out of the slot
Open the right face and a U' pulls the trapped pair partway out of the slot into the U layer. (R U' R')
Loosen the wedged pair
A U' and a right trigger continue loosening the deeply-wedged mis-pair, opening room for the keyhole finish. (U' R U' R')
d-layer keyhole & insert
A `d` turn — a rotation of the BOTTOM TWO LAYERS that slides the working slot under the U layer without disturbing the solved pairs above — brings the pair into an insertable position, then the right trigger seats both. (d R' U' R)
`d` is a bottom-two-layers turn (a 'wide D'): instead of U-turning the loose pieces over to the slot, you slide the slot itself under them. That keyhole trick is what makes the trapped case efficient — the d-layer-keyhole finish, the y' rotation route, and the early-d reposition are three escape routes for the same configuration (F2L 41).
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Edge and Corner in Place — Trapped (white-down), y' rotation-assisted
Both-in-slot trap, corner white-down — solved with a y' whole-cube rotation.
Construct the pieces-40 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the trapped both-in-slot case (corner white-down, edge front-color-front), trigger the rotation-assisted route.
Identical to the d-layer-keyhole route: a full-but-unsolved front-right slot with the corner's white buried facing down. This variant solves the same trapped case with a cube rotation rather than a d-layer turn.
Same as the trapped-case recognition — the corner's white is buried at the bottom of the full-but-unsolved slot. The y' rotation is a solver choice for ergonomics, not a recognition difference.
No recognition AUF — the trapped pair is already in the slot. The algorithm opens directly with the extraction trigger.
Extract, move to the working face, then rotate-and-insert: R U R' pulls the pair out (note the forward U), U' R U' R' shifts the loose pair onto the working face, then U2 y' R' U' R positions the pair with a U2, rotates the whole cube with `y'` (a whole-cube turn about the vertical axis that brings a fresh face to the front), and seats both with a right trigger from the new, more comfortable angle.
Extract out of the slot
Open the right face and a FORWARD U pulls the trapped pair out of the slot into the U layer. (R U R')
Move to the working face
A U' and a right trigger shift the loose pair onto the working face ahead of the rotation-and-insert. (U' R U' R')
Rotate & insert
A U2 positions the pair, then `y'` rotates the WHOLE CUBE about the vertical axis to bring a fresh face to the front (an ergonomic re-grip that touches no pieces), and the right trigger seats both from the new angle. (U2 y' R' U' R)
`y'` is a whole-cube rotation — you physically turn the cube so the insert lands at a friendlier angle; it touches no pieces, only your grip. This rotation route is the alternative to the d-layer-keyhole finish (F2L 41) for the same trapped case.
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Edge and Corner in Place — Trapped (white-down), early d-layer reposition
Both-in-slot trap, corner white-down — solved by an early d-layer reposition.
Construct the pieces-41 state.
Prepare {slot} slot
Extract the stuck pair from the {slot} slot up to the U layer.
The corner and edge for this slot are wedged in the slot, not in the U layer.
The pair is stuck in the slot in a bad orientation. A conjugated trigger lifts it to the U layer so the standard case can solve it.
From the trapped both-in-slot case (corner white-down, edge front-color-front), trigger the early-d-layer-reposition.
Identical to the other trapped-case routes: a full-but-unsolved front-right slot with the corner's white buried facing down. This variant solves the trap with an early `d` move that sets up the pairing in one go.
Same as the other trapped-case routes — the corner's white is buried at the bottom of the full-but-unsolved slot. The early d-layer move is a solver choice, not a recognition difference.
No recognition AUF — the trapped pair is already in the slot. The algorithm opens directly with the extraction trigger.
Open the slot, d-layer reposition, then finish: R U' R' opens the slot and frees the pair, d R' U2 R uses a `d` turn — a rotation of the BOTTOM TWO LAYERS that slides the working slot — to swing the pair into a pairable position with a U2 setting the angle, then U R' U2 R completes the open-insert-close to seat both.
Open the slot
Open the right face and a U' frees the trapped pair from the slot into the U layer, making room for the early keyhole. (R U' R')
d-layer reposition
A `d` turn — a rotation of the BOTTOM TWO LAYERS — slides the working slot to swing the pair into a pairable position, with a U2 setting the angle. (d R' U2 R)
Finish the insert
A U AUFs the pair, then R' U2 R — open the right face, a U2 swings the pair in, close — completes the open-insert-close to seat both. (U R' U2 R)
This route spends its `d` move EARLY (right after opening the slot) so the reposition and the pair-up happen together — a different keyhole timing than the late-d keyhole finish (F2L 41), applied to the same trapped case.