D-CROSS · F2L · 3D TRAINER

D-Cross · F2L 3D Trainer

Calculate optimal D-Cross solutions and repeat F2L recovery cases that keep D-Cross solved.

GUIDES

Start with the topic you need.

Review notation, D-Cross, or F2L, then practice it in the same tool.

Step through beginner-to-advanced D-Cross and F2L cases with 3D playback and completion tracking.

Learn to read the position and orientation of the four bottom-layer edges.

Repeat F2L recovery from scrambles that leave D-Cross solved.

Check face letters, primes, and double turns with input examples.

Save the current mode and complete scramble in a link.