Datasets:

LKForge
/

rubik-cube-solver-benchmark

license: mit
pretty_name: Rubik's Cube Solver Benchmark (min2phase solution length)
language:
  - en
tags:
  - rubiks-cube
  - kociemba
  - two-phase
  - min2phase
  - solver
  - benchmark
task_categories:
  - other
size_categories:
  - n<1K
configs:
  - config_name: length_vs_scramble
    data_files: data/rubik-benchmark.json

Rubik's Cube Solver Benchmark — min2phase Solution Length

By LK Forge: privacy-first browser tools & games, nothing to install, nothing uploaded.

Solution length and solve time for the LK Forge Rubik's Cube Solver, which uses the min2phase (Kociemba two-phase) algorithm. 200 seeded random scrambles per depth, solving the exact shipped module.

Try it: https://lkforge.com/tools/rubik/
Producer: LK Forge — client-side AI games, solvers, and tools.

Headline numbers (200 cubes each)

Scramble depth (random turns)	Mean solution moves	Median	Max	Mean solve time
10	12.4	10	21	0.10 ms
15	19.2	20	21	0.29 ms
20	20.4	21	21	0.50 ms
25	20.5	21	21	0.56 ms
30	20.5	21	21	0.47 ms
40	20.5	21	21	0.46 ms

Scrambling more does not make the cube harder to solve. Past ~20 random turns the cube is already effectively maximally scrambled, so the solution length plateaus at ~20.5 moves (this build caps solutions at 21 moves in the half-turn metric — consistent with God's Number = 20). Every solve completes in well under a millisecond in plain JavaScript.

Files

data/rubik-benchmark.json — per scramble depth: mean/median/max solution moves and mean solve time; plus one-time pruning-table initMs.

Method

Engine: the shipped ES modules (solver.js → vendored min2phase.js, scramble.js, constants.js), imported and run unmodified.
Scrambles: seeded randomScramble(depth) applied to the solved cube, then solved from the resulting facelet string.
Solution moves counted in the half-turn metric (HTM), as returned by the solver.

Reproduce

node scripts/benchmark-rubik.mjs

Citation

LK Forge (2026). Rubik's Cube Solver Benchmark — min2phase Solution Length. https://lkforge.com/tools/rubik/

Everything runs client-side, no login, no tracking.