COLL Algorithm Trainer
40 cases in 7 groups. Pick the groups to drill and how you want to practice.
Which statuses?
Which groups?
How do you want to practice?
R' U' R U' R' U2 R2 U R' U R U2 R'
Virtual CubeSolve the case on an on-screen cube.
Start the training drill!40 cases · Flashcard, timed
The trainer drills the algorithm you chose for each case. Change them on the COLL algorithms page
What is COLL?
COLL (Corners of the Last Layer) solves the last-layer corners in one algorithm when the edges are already oriented, leaving only an edge-only PLL. There are 40 COLL cases, in seven groups by the corners' orientation: T, U, L, H, Pi, S and Anti-Sune.
Most cubers learn COLL one group at a time, and many start with the Sune and Anti-Sune groups. Pick a group above to drill just that one.
Frequently asked questions
- How do I practice COLL algorithms?
- Pick which cases to drill, then one of three modes: Flashcard (see the case, recall the algorithm), Virtual Cube (solve on a 3D cube with a Bluetooth smart cube or your keyboard) or Scramble (set the case up on your own cube and solve it). The trainer serves the cases you are still learning, the ones you fail and the slow ones more often than the ones you already know.
- How many COLL algorithms are there?
- There are 40 COLL cases, one algorithm each. Many cubers start with the Sune and Anti-Sune groups rather than all 40.
- How does the trainer know which COLL cases I know?
- From the status you give each algorithm in the COLL database: Not known, Failing, Learning, Getting there or Muscle Memory. Filter the drill by status to practice only the cases you are learning, and update a status as it changes.
- Do I need a smart cube?
- No. Flashcard and Scramble work with any cube, and Virtual Cube mode also takes keyboard input. A Bluetooth smart cube lets Virtual Cube mode follow your turns on a real cube.