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People · United States

Jackey Zheng

Square-1 · top 0.25% of 25,272 all-time · competing since April 2017 · 2017ZHEN10

Jackey Zheng has been competing for 9 years. His best event is the Square-1: a personal-best single of 4.95, set at Brooklyn 2019, puts him in the top 0.25% of the 25,272 people who have ever been ranked in the event, and 30th in the United States. Until May 2019, no official Square-1 solve in the world had been that fast. Across 48 competitions since April 2017, he has put 1,438 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 57% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 15.36 in November 2017 to 8.77, a 43% improvement. Jackey has entered 48 competitions, more competitions than 99% of everyone who has ever competed.

Square-1
best event — top 0.25% of 25,272 all-time
4.95
signature single · Brooklyn 2019
1,438
official solves on the record
13%
solve-to-solve spread · steadier than 57% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingUnited States
Square-14.957.60
top 0.25%30 / 6,743
3×38.7711.10
top 4.3%2,420 / 59,724
2×22.313.57
top 7.1%2,838 / 40,951
Megaminx58.671:05.25
top 9.3%645 / 7,841
4×437.8840.54
top 9.7%1,446 / 19,072
Skewb3.946.37
top 10.5%1,609 / 18,907
Pyraminx5.467.47
top 16.2%4,280 / 28,708
Clock8.4012.48
top 17.1%1,300 / 8,927
3×3 one-handed19.0524.28
top 17.9%2,310 / 15,683
5×51:26.221:39.67
top 24.3%1,888 / 9,401
6×64:10.46—
early days — 2 solves2,693 / 4,196
3×3 Fewest Moves52 moves—
early days — 2 solves1,683 / 2,040

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

Hudson Valley Fall 2017: 15.36New York City Winter 2018: 12.93Penn Cube Day Winter 2018: 13.28Rutgers Spring 2018: 12.33New York City Spring 2018: 13.02North Plainfield Open 2018: 14.62CubingUSA Northeast Championship 2018: 12.94Brooklyn 2018: 12.49Pennsylvania 2018: 13.84Quinnipiac 2018: 12.13Kew Forest Open 2018: 10.88Princeton Fall 2018: 12.43Fall Foliage Cubing 2018: 11.09New York City Fall 2018: 12.82Lower Moreland Fall 2018: 10.32CubingUSA New Jersey Championship 2018: 8.81Penn Cube Day Fall 2018: 12.56Welcome to 2019: 10.47Boston University Winter 2019: 11.60New Hope Open Winter 2019: 10.99Princeton Winter 2019: 12.84CubingUSA Northeast Championship 2019: 11.13Binghamton Winter 2019: 10.93SBU Spring 2019: 10.70Burke Mountain Cubing 2019: 10.16STMHS Spring 2019: 11.80Brooklyn 2019: 11.10Colonie Spring 2019: 9.97Arcadia Summer 2019: 11.92WCA World Championship 2019: 10.44Canadian Championship 2019: 10.57CubingUSA Nationals 2019: 12.06Brooklyn Fall 2019: 10.74Princeton Winter 2020: 9.98Country Roads Martinsburg 2020: 11.01Babylon Winter 2020: 8.77Empire State Summer A 2021: 10.71Slow N Steady Fall 2022: 8.94Cubes on the Bayside 2023: 10.30Cubes on the Bayside Winter 2024: 10.04Mid-Atlantic Warm-Up 2026: 9.218.7715.365 Nov 20179 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-4 Square-1 single — 11 people have one; it is 0.95 away.
  • A sub-8 3×3 single — 7,931 people have one; it is 0.77 away.

Targets move as he improves.