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People → Japan → Kohdai Kusatani (草谷幸大)

People · Japan

Kohdai Kusatani (草谷幸大)

3×3 · top 0.36% of 284,439 all-time · competing since July 2017 · 2017KUSA01

Kohdai Kusatani (草谷幸大) has been competing for 9 years. His best event is the 3×3: a personal-best single of 5.78, set at Japan Championship 2026, puts him in the top 0.36% of the 284,439 people who have ever been ranked in the event, and 10th in Japan. Until June 2011, no official 3×3 solve in the world had been that fast. Across 34 competitions since July 2017, he has put 867 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 14% around a typical one; 67% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 28.32 in July 2017 to 5.78, an 80% improvement. Kohdai has entered 34 competitions, more competitions than 98% of everyone who has ever competed.

3×3
best event — top 0.36% of 284,439 all-time
5.78
signature single · Japan Championship 2026
867
official solves on the record
14%
solve-to-solve spread · wider than 67% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingJapan
3×35.787.84
top 0.36%10 / 3,329
4×425.5128.91
top 0.84%11 / 667
5×548.5751.43
top 1.4%12 / 420
6×61:29.091:42.75
top 1.7%6 / 209
3×3 one-handed11.4114.09
top 2.3%22 / 529
7×72:28.262:43.63
top 3.5%9 / 188
Pyraminx3.345.41
top 4.8%65 / 688
Megaminx52.4457.55
top 6.2%47 / 313
2×22.253.03
top 6.6%85 / 1,021
Square-112.6218.42
top 11.1%42 / 245
Skewb5.068.10
top 18.6%96 / 338
3×3 Fewest Moves34 moves35.00
early days — 3 solves86 / 201
Clock12.1816.77
top 35.8%134 / 263

Percentile against all competitors ever ranked in each event, a fairer measure than raw rank, because the pools differ by a factor of ten.

The line so far

Kansai Summer 2017: 28.32Kansai Summer 2018: 20.60Kansai Open 2019: 14.24Nishinomiya Open 2019: 14.13Kansai Summer 2019: 12.19Kyoto Open 2019: 11.73Japan Championship 2019: 9.31Hiroshima Open 2019: 9.21Tokai Winter AM 2021: 7.19Minatomirai 2022: 8.60Yoga Summer B 2022: 6.82Ayase Autumn B 2022: 6.46Hiroshima Spring 2023: 7.98Kanazawa Challenge Spring PM 2023: 6.74Ayase Summer 2023: 7.02Rubik's WCA World Championship 2023: 7.13Tokai Open 2023: 5.96Hiroshima Winter 2024: 7.69Tokai Challenge Beta 2024: 8.49Kanazawa 2024: 6.32Katano Milky Way 2024: 7.41Warm Up at gateway klia2 2024: 6.34Tokai Open PM 2024: 8.08Tokai Spring 2025: 6.98Kansai Odd and BLD 2025: 5.99Tokyo Summer 2025: 7.56Katano Summer 2025: 6.84Shimonoseki 2025: 6.58Katano Spring 2026: 6.61Japan Championship 2026: 5.785.7828.3216 Jul 201718 Jul 2026

Best single per competition, 3×3. Faster is higher — the axis is the right way up.

The story so far

Competitions

Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · top X% compares against everyone ever ranked in that event, which is fairer than raw rank because event pools differ tenfold.

The circuit

The people whose scorecards keep turning up next to his.

Next targets

  • A sub-5 3×3 single — 344 people have one; it is 0.78 away.
  • A sub-25 4×4 single — 588 people have one; it is 0.51 away.

Targets move as he improves.