F2L Algorithms

In the second pair the edge is misoriented and the solution becomes completely different.

We use BirdF2L codes - two letters like Jb or Mi because they are more descriptive and standardized than the old numbering system.

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Pro usage counts how often an algorithm appears in reconstructed solves by the world's fastest cubers. Alongside it sits each algorithm's community vote count from SpeedCubeDB, so you can see where the crowd and the pros disagree.

A back-slot insert is a different job for your hands, so the two are counted apart. Left and right pool together (⇄ on by default); front and back do not (⇅ off). Both are toggles in the table.

A history graph traces each algorithm's popularity over time - the share of that year's solves that used it, rising as it catches on or fading as cubers move to something faster.

A method bar splits those uses by how people solve: CFOP is the grey baseline, and a fat coloured slice means ZB or ZZ solvers favour the algorithm more than mainstream CFOP does. Beside it, a grip bar asks a different question of the same solves - how many were done one-handed (pink), which rewards regrip-light, rotationless algorithms.

Many algorithms open with a short trigger or a rotation that turns the case into an easier one, then finish it off. Those share a row, and their usage adds up.

The ×4 and ×29 count the algorithms folded into each row. In the table the count appears when you hover the row, and stays put once you pick one - click or tap it to unfold every algorithm it stands for, and again to fold them back.

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Solving the front-right slot, these algorithms would disturb:

Most uses of an algorithm are a plain single-pair insert (grey). The colored slices show how often it was instead used inside a fancier last-slot technique - hover or tap the bar in the table for exact counts.