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People → United States → Curtis Chai

People · United States

Curtis Chai

4×4 · top 0.079% of 83,917 all-time · competing since May 2022 · 2022CHAI02

Curtis Chai has been competing for 4 years. His best event is the 4×4: a personal-best single of 20.53, set at Mid-Atlantic Speedcubing Championship 2026, puts him in the top 0.079% of the 83,917 people who have ever been ranked in the event, and 13th in the United States. Until June 2017, no official 4×4 solve in the world had been that fast. Across 93 competitions since May 2022, he has put 5,779 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 50% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 13.83 in May 2022 to 4.96, a 64% improvement. Curtis has entered 93 competitions, more competitions than 99% of everyone who has ever competed.

4×4
best event — top 0.079% of 83,917 all-time
20.53
signature single · Mid-Atlantic Speedcubing Championship 2026
5,779
official solves on the record
13%
solve-to-solve spread · steadier than 50% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingUnited States
4×420.5324.23
top 0.079%13 / 19,072
Pyraminx1.151.86
top 0.11%41 / 28,708
3×34.966.03
top 0.11%75 / 59,724
2×20.701.11
top 0.12%48 / 40,951
Skewb1.392.52
top 0.3%49 / 18,907
Clock2.723.69
top 0.44%46 / 8,927
5×543.4948.84
top 0.49%37 / 9,401
Square-15.859.14
top 0.69%61 / 6,743
Megaminx36.1738.75
top 0.81%56 / 7,841
3×3 one-handed10.2612.02
top 1.2%192 / 15,683
6×61:25.961:34.85
top 1.3%48 / 4,196
7×72:32.522:37.52
top 4.1%112 / 3,184
3×3 Fewest Moves36 moves39.00
early days — 3 solves738 / 2,040
3×3 blindfolded2:22.31—
early days — 2 solves867 / 2,092

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

CubingUSA Northeast Championship 2022: 13.83ROC the Cube 2022: 14.71Bluegrass Spring 2022: 16.51New York Championship 2022: 15.27Amherst Open 2022: 10.84Cubers Flood Watertown 2022: 11.68Naticube 2022: 10.07Empire State Fall 2022: 10.49New York Yopen 2022: 9.82Cubing in Cambridge 2022: 9.84New York New Year 2023: 8.78Mum's the Word 2023: 8.83Troy Story 2023: 8.05Pioneer Valley Cubing A 2023: 8.81Fall River Cubikon 2023: 9.23Northampton Winter B 2023: 8.61Niskayuna Nimble Fingers 2023: 8.33PBs in Palisades 2023: 7.62Cape Cod 2023: 7.35Middleboro Cubikon 2023: 6.58Connecticut Spring 2023: 8.14North Jersey Speedsolving B 2023: 7.89New Hampshire Spring 2023: 7.34Cubehenge 2023: 7.84Winchester Weeknights II 2023: 7.18Westport Warmup 2023: 7.90Quick in Quincy 2023: 8.15CubingUSA Nationals 2023: 7.55Rubik's WCA World Championship 2023: 6.65CubingUSA New England Championship 2023: 6.37Northampton Fall A 2023: 6.77Pillar of Fire Colorado 2023: 6.53Loon Cubikon 2023: 5.97Concordia Turning Fall 2023: 6.65New York New Year 2024: 7.10Connecticut Winter 2024: 6.12Troy Story 2024: 6.86Fall River Cubikon 2024: 6.45Naticube 2024: 6.24Cardinal Cube Day 2024: 5.40Quabbin Newcomers 2024: 6.97Ridgefield Spring 2024: 6.41Empire State Spring Special 2024: 7.92New Jersey Championship 2024: 6.59Salem Cubikon 2024: 6.11Pennsylvania Championship 2024: 6.30Gouverneur 2024: 6.89Saratoga Springs Summer 2024: 6.75Rubik's WCA North American Championship 2024: 6.79Missouri Championship 2024: 6.85CubingUSA New England Championship 2024: 6.17M Moves in Middlebury 2024: 6.52Amherst Fall 2024: 6.12Wakefield Winter 2024: 5.98New New York New Year 2024: 6.53A Tuesday in Ashfield 2024: 6.01Cubing at the Course CT 2025: 5.58Fall River Cubikon 2025: 6.32Fitchburg Fingertricks 2025: 6.02PBs in Palisades Winter 2025: 6.00Great Peconic Bay 2025: 5.96Front Royal Spring 2025: 6.30The Battle of Lexington Semiquincentennial 2025: 5.56Connecticut Spring 2025: 5.95Saint John's Warm Up 2025: 5.37Yunnan Open 2025: 5.92Rubik's WCA World Championship 2025: 5.36Mystic Cubikon 2025: 5.64Connecticut Championship 2025: 5.68CubingUSA New England Championship 2025: 5.45Cincinnati Open 2025: 5.35CubingUSA Mid-Atlantic Championship 2025: 5.02Cubing in Westerly RI 2025: 5.75Rubik's x TheCubicle CubingUSA All-Stars 2025: 5.83New Hampshire Championship 2025: 5.40New York New Year 2025: 5.62Westport Icebreaker 2026: 5.03Wide Moves & Waterslides CT 2026: 6.09Berkshires Cube Day at BART 2026: 6.13UMBC Winter 2026: 5.17PBs in Palisades Open 2026: 6.36Empire State ALL11-Stars 2026: 5.74Cube Against Cancer Boston 2026: 5.64Grand Central Cubing WV 2026: 6.25WPI Spring 2026: 6.03Cubing in Westerly RI 2026: 5.29Saint John's Summer 2026: 5.69Rubik's WCA North American Championship 2026: 5.71Hawaii Championship 2026: 5.00Mid-Atlantic Warm-Up 2026: 5.59Mid-Atlantic Speedcubing Championship 2026: 4.96Brookline Favorites IV 2026: 5.874.9616.5127 May 202229 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-20 4×4 single — 42 people have one; it is 0.53 away.
  • A sub-1 Pyraminx single — 49 people have one; it is 0.15 away.

Targets move as he improves.