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The Middle Three
People → China → Simeng Liu (刘思萌)

People · China

Simeng Liu (刘思萌)

3×3 · top 9.4% of 284,439 all-time · competing since December 2017 · 2017LIUS18

Simeng Liu (刘思萌) has been competing for 9 years. Her best event is the 3×3: a personal-best single of 10.64, set at Harbin Open 2024, puts her in the top 9.4% of the 284,439 people who have ever been ranked in the event, and 3,672nd in China. Until August 2006, no official 3×3 solve in the world had been that fast. Across 10 competitions since December 2017, she has put 233 official solves on the record across seven events. Solve to solve, her 3×3 times vary about 12% around a typical one, steadier than 61% of the 35,811 competitors with ten or more counted rounds. Her 3×3 best has come down from 18.73 in December 2017 to 10.64, a 43% improvement. Simeng has entered ten competitions, more competitions than 92% of everyone who has ever competed.

3×3
best event — top 9.4% of 284,439 all-time
10.64
signature single · Harbin Open 2024
233
official solves on the record
12%
solve-to-solve spread · steadier than 61% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
3×310.6411.83
top 9.4%3,672 / 28,153
4×442.8748.82
top 15.6%1,689 / 5,926
Skewb4.778.28
top 16.4%1,015 / 5,004
2×23.215.63
top 16.7%2,684 / 15,796
Pyraminx6.238.26
top 21.7%2,481 / 10,224
3×3 one-handed24.5928.00
top 33.1%3,181 / 5,922
3×3 Fewest Moves43 moves50.67
top 59.0%691 / 1,058

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

Heilongjiang Colleges Open 2017: 18.73Beijing Open 2018: 15.46Harbin Open 2018: 13.89Changchun Open 2018: 12.46Shenyang Summer 2018: 12.00Mudanjiang Open 2018: 10.74Harbin Open 2019: 10.75Harbin Open 2024: 10.64Harbin Open 2025: 11.1610.6418.7317 Dec 201720 Jul 2025

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 her.

Next targets

  • A sub-10 3×3 single — 21,172 people have one; it is 0.64 away.
  • A sub-40 4×4 single — 10,180 people have one; it is 2.87 away.

Targets move as she improves.