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The Middle Three
People → Republic of Korea → Kyumin Shim (심규민)

People · Republic of Korea

Kyumin Shim (심규민)

3×3 · top 1.4% of 284,439 all-time · competing since May 2023 · 2023SHIM03

Kyumin Shim (심규민) has been competing for 3 years. His best event is the 3×3: a personal-best single of 7.10, set at New Braunfels Tube & Twist 2026, puts him in the top 1.4% of the 284,439 people who have ever been ranked in the event, and 91st in Republic of Korea. Until July 2008, no official 3×3 solve in the world had been that fast. Across 32 competitions since May 2023, he has put 1,127 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 17.36 in May 2023 to 7.10, a 59% improvement. Kyumin has entered 32 competitions, more competitions than 98% of everyone who has ever competed.

3×3
best event — top 1.4% of 284,439 all-time
7.10
signature single · New Braunfels Tube & Twist 2026
1,127
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 standingRepublic of Korea
3×37.108.54
top 1.4%91 / 4,352
2×21.722.98
top 3.2%91 / 2,319
4×431.9236.20
top 4.1%86 / 1,308
Pyraminx3.575.00
top 5.8%101 / 1,271
3×3 one-handed14.0317.52
top 6.2%84 / 966
5×51:04.221:12.14
top 7.9%83 / 716
Square-111.8317.59
top 9.5%37 / 371
Clock6.788.78
top 10.2%70 / 536
Skewb4.285.91
top 12.9%134 / 854
Megaminx1:19.061:22.73
top 21.1%142 / 524
6×62:39.302:47.21
top 30.3%137 / 329
7×74:32.995:24.37
top 42.1%136 / 254
3×3 blindfolded5:54.48—
early days — 1 solve194 / 217

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

Seoul Spring 2023: 17.36Rubik's WCA World Championship 2023: 14.37Suncheon Fall 2023: 11.51Busan Spring 2024: 11.93Prime Cubing Day Seoul 2024: 14.88Korea Qualifier - Seoul B 2024: 13.58Ansan Summer 2024: 11.06Korean Championship 2024: 9.85Brown Fall Seongnam 2024: 12.06Hamchang Winter 2024: 9.86Seoul Winter 2024: 9.78Happy Suseong 2025: 10.26Korea Newcomers PM 2025: 10.66Daejeon Spring 2025: 9.52Osan Summer 2025: 10.05Suwon Summer 2025: 11.02Space City Fall TX 2025: 8.59Temple Cubing Fall 2025: 7.24Texas Championship 2025: 8.78Brazos Cubing Winter 2026: 9.16New Braunfels Comal Cubing Classic 2026: 9.17The Heart of Texas Spring 2026: 8.53Cube Against Cancer Houston 2026: 7.95Temple Qualifier 2026: 7.56GAN Southern Championship 2026: 8.43Cubing at COTA 2026: 7.51Rubik's WCA North American Championship 2026: 7.67Hillister Cube Hustle 2026: 7.33New Braunfels Tube & Twist 2026: 7.107.1017.367 May 20232 Aug 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-6 3×3 single — 1,376 people have one; it is 1.10 away.
  • A sub-1 2×2 single — 1,032 people have one; it is 0.72 away.

Targets move as he improves.