About Cubeline

Cubeline is a free, interactive practice companion for the 3×3 cube. Learn a case, explore its moves, and mark it learned when it feels familiar.

Build a complete CFOP solve

CFOP stands for Cross, First Two Layers, Orientation of the Last Layer and Permutation of the Last Layer. The trainer includes all 57 OLL and 21 PLL cases, plus three introductory edge-orientation steps.

Each lesson pairs an interactive 3D demonstration with a fixed recognition diagram, a physical-cube setup and practical notes. Cross, F2L and lookahead guides help you work on the pauses between algorithms. The solve timer records your practice in this browser.

How recommendations are selected

Algorithms are checked with cubing.js against independently published case setups. Recommended options draw on J Perm and SpeedCubeDB, with alternatives for different grips. A popular algorithm is a useful starting point; your own clean, consistent execution matters more than a universal speed ranking.

J Perm tutorials · SpeedCubeDB · CubeSkills

Your practice stays in your browser

No trainer account is needed. Checklists, selected algorithms and solve history are saved on this device. Export a backup from Settings & data before switching browsers or clearing storage.

Independent learning tool

Cubeline is an independent project and is not affiliated with Rubik’s or the World Cube Association. It is intended for practice and does not verify physical solves or provide official competition scrambling.

Contact

Questions, corrections or privacy requests: hello@cubelinetrainer.com.