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The Middle Three
People → China → Chang Guo (郭畅)

People · China

Chang Guo (郭畅)

4×4 · top 1.4% of 83,917 all-time · competing since August 2024 · 2024GUOC01

Chang Guo (郭畅) has been competing for 2 years. His best event is the 4×4: a personal-best single of 27.14, set at Zhengzhou Summer I 2025, puts him in the top 1.4% of the 83,917 people who have ever been ranked in the event, and 137th in China. Until April 2012, no official 4×4 solve in the world had been that fast. Across 18 competitions since August 2024, he has put 487 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 10% around a typical one, steadier than 94% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 9.56 in August 2024 to 7.82, an 18% improvement. Chang has entered 18 competitions, more competitions than 96% of everyone who has ever competed.

4×4
best event — top 1.4% of 83,917 all-time
27.14
signature single · Zhengzhou Summer I 2025
487
official solves on the record
10%
solve-to-solve spread · steadier than 94% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
4×427.1434.70
top 1.4%137 / 5,926
3×37.829.34
top 2.5%892 / 28,153
5×553.481:01.97
top 2.8%121 / 2,816
Pyraminx3.025.76
top 3.7%447 / 10,224
3×3 one-handed12.7114.37
top 4.0%349 / 5,922
6×61:40.771:46.15
top 4.3%83 / 1,349
7×72:33.862:44.66
top 4.4%86 / 1,261
Clock5.026.11
top 4.5%81 / 1,843
Megaminx54.071:15.22
top 7.0%165 / 1,678
2×22.303.25
top 7.0%1,000 / 15,796
Skewb4.526.98
top 14.6%896 / 5,004
3×3 Fewest Moves30 moves39.00
top 14.8%148 / 1,058
Square-123.8125.60
top 36.5%615 / 1,362

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

Xi'an Open 2024: 9.56Deqing Big Cubes Summer 2024: 8.28Lishui Open 2025: 9.54Taizhou Open 2025: 8.97Hangzhou Winter 2025: 8.04Zhengzhou Zest 2025: 7.82Xianju Special 2026: 8.13Deqing Small & Special 2026: 8.32Hangzhou Open 2026: 8.287.829.563 Aug 202423 May 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-25 4×4 single — 588 people have one; it is 2.14 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 1.82 away.

Targets move as he improves.