FTLT

F2L is solved except for the last triple: its corner and triangles on D and the front face in the EIF hold. U is free, with its large centre turning as a unit. One of the three front-colour triangles is tracked individually; colour-identical positions can therefore belong to different cases. Solve the corner and front triangle of the last triple.

23 cases · 99 algorithms

Proven optimum for 17 cases out of 23; for the others, the page gives the length of the shortest algorithm offered and a bound.

25 writings are played from a representative position of the case. They reach the goal shown in the dialog without necessarily solving the whole puzzle.

Definition of the set: Nautilus FTO, public sheet.

How to read this page

Each case is drawn on a flat net of the puzzle’s faces. Grey marks the stickers that the case does not constrain.
Colours of the puzzle in the application. Grey marks what the case does not look at.
Lengths: each move counts 1, an inner slice 2, a rotation 0. The "setup" presents the puzzle as drawn and does not count.
In each case, the best available optimal algorithm comes first, then the others by increasing ease score. When no optimal writing is available, all algorithms are ranked by this score (lower is easier).
"Play" starts from a position of the case and runs the algorithm to the set’s goal. Usually, the starting position is obtained by running the algorithm backwards from the solved puzzle. For a partial goal, the player may start from a representative position of the case in the application; the puzzle is not necessarily fully solved at the end.

S-Right

At least 7 moves

3 algorithms

First algorithm: BL U' B' U' BL' U BL B BL'

T-Right

At least 7 moves

3 algorithms

First algorithm: (U) BL B BL' U BL U' B' U BL'

S-Left

At least 7 moves

2 algorithms

First algorithm: (U) L BLw U BL' U' BLw' BL L' BLv BLv'

T-Left

At least 7 moves

2 algorithms

First algorithm: (U) BLw' F BL F' BLw U' BL' BLv' BLv

S-Shit

At least 7 moves

1 algorithm

First algorithm: L BLw BL' U BL U' BLw' L' BLv BLv'

T-Shit

At least 7 moves

1 algorithm

First algorithm: BL U BL U B BL' U BL U' B' U' BL

T-Bottom

Optimum 6 moves

6 algorithms

First algorithm: F' U F Rw F Rw'

R-Shit

Optimum 6 moves

5 algorithms

First algorithm: (U) F' Fw' Lw U Lw' Fw

R-Arrow

Optimum 6 moves

5 algorithms

First algorithm: (U) F' Fw' Lw U Lw' Fw

R-Headlights

Optimum 6 moves

5 algorithms

First algorithm: (U) F' Fw' Lw U Lw' Fw

R-Pair

Optimum 3 moves

5 algorithms

First algorithm: Rw F' Rw'

R-Front

Optimum 3 moves

4 algorithms

First algorithm: Rw F' Rw'

R-Axe

Optimum 3 moves

4 algorithms

First algorithm: Rw F' Rw'

R-Bow

Optimum 3 moves

4 algorithms

First algorithm: Rw F' Rw'

R-Bottom

Optimum 3 moves

5 algorithms

First algorithm: Rw F' Rw'

L-Pair

Optimum 3 moves

4 algorithms

First algorithm: (U) F' U' F