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The Middle Three
People → Japan → Kento Hirai (平井健斗)

People · Japan

Kento Hirai (平井健斗)

7×7 · top 3.3% of 14,226 all-time · competing since December 2018 · 2018HIRA02

Kento Hirai (平井健斗) has been competing for 8 years. His best event is the 7×7: a personal-best single of 2:27.34, set at Tokai Big Cubes 2025, puts him in the top 3.3% of the 14,226 people who have ever been ranked in the event, and 8th in Japan. Until July 2015, no official 7×7 solve in the world had been that fast. Across 23 competitions since December 2018, he has put 343 official solves on the record across 15 events. Solve to solve, his 3×3 times vary about 7% around a typical one, steadier than 99% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 30.08 in December 2018 to 10.80, a 64% improvement. Kento has entered 23 competitions, more competitions than 97% of everyone who has ever competed.

7×7
best event — top 3.3% of 14,226 all-time
2:27.34
signature single · Tokai Big Cubes 2025
343
official solves on the record
7%
solve-to-solve spread · steadier than 99% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingJapan
7×72:27.342:37.89
top 3.3%8 / 188
5×557.751:07.51
top 4.4%34 / 420
6×61:43.421:51.56
top 5.0%15 / 209
4×433.6535.92
top 5.5%65 / 667
3×310.8011.61
top 9.9%431 / 3,329
3×3 blindfolded54.851:35.40
top 11.4%56 / 282
Megaminx1:04.731:14.17
top 12.5%87 / 313
Pyraminx5.107.29
top 13.8%164 / 688
Clock9.8413.48
top 24.3%84 / 263
2×23.935.79
top 25.6%320 / 1,021
Square-119.2823.53
top 26.2%94 / 245
3×3 one-handed23.0625.86
top 28.9%233 / 529
3×3 Fewest Moves35 moves36.33
early days — 3 solves97 / 201
Skewb7.228.64
top 35.4%173 / 338
3×3 Multi-Blind3 of 3 cubes · 20:07—
early days — 1 solve81 / 128

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

Japan Championship 2018: 30.08Tokai Open 2019: 17.91Japan Championship 2019: 14.17Tokai Open 2023: 10.80Katano Milky Way 2024: 11.90Kansai Odd and BLD 2025: 10.92Tokai Summer 2025: 12.79Katano Summer 2025: 11.28Kansai Mega Day 2025: 11.10Katano Spring 2026: 11.7510.8030.0822 Dec 201821 Mar 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-2:00 7×7 single — 83 people have one; it is 27.34 away.
  • A sub-50 5×5 single — 713 people have one; it is 7.75 away.

Targets move as he improves.