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The Middle Three
People → Hong Kong, China → Anto Kam (甘浩東)

People · Hong Kong, China

Anto Kam (甘浩東)

3×3 one-handed · top 0.026% of 73,695 all-time · competing since June 2017 · 2017TUNG13

Anto Kam (甘浩東) has been competing for 9 years. His best event is the 3×3 one-handed: a personal-best single of 6.45, set at Rubik's WCA World Championship 2023, puts him in the top 0.026% of the 73,695 people who have ever been ranked in the event, and 1st in Hong Kong, China. Until August 2022, no official 3×3 one-handed solve in the world had been that fast. Across 132 competitions since June 2017, he has put 3,022 official solves on the record across 17 events. Solve to solve, his 3×3 times vary about 14% around a typical one; 70% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 13.38 in August 2017 to 5.74, a 57% improvement. Anto has entered 132 competitions, more competitions than 99% of everyone who has ever competed.

3×3 one-handed
best event — top 0.026% of 73,695 all-time
6.45
signature single · Rubik's WCA World Championship 2023
3,022
official solves on the record
14%
solve-to-solve spread · wider than 70% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingHong Kong, China
3×3 one-handed6.459.18
top 0.026%1 / 361
3×3 blindfolded14.9619.49
top 0.15%1 / 65
3×35.747.01
top 0.35%10 / 1,347
2×21.272.72
top 1.3%18 / 855
Megaminx41.6948.11
top 2.0%8 / 154
4×430.7737.63
top 3.3%34 / 423
Skewb3.175.64
top 5.9%24 / 285
4×4 blindfolded3:04.445:21.06
top 8.4%4 / 15
5×51:05.351:08.37
top 8.6%39 / 192
3×3 Fewest Moves29 moves36.67
top 12.2%22 / 76
3×3 Multi-Blind14 of 16 cubes · 55:31—
top 12.7%3 / 25
Pyraminx5.857.79
top 18.9%116 / 431
6×62:21.702:30.37
top 21.3%37 / 87
7×74:19.664:37.93
top 37.6%49 / 74
Square-124.4731.77
top 38.0%71 / 126
5×5 blindfolded14:24.0019:46.00
top 38.5%4 / 7
Clock12.9917.18
top 39.6%87 / 156

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

Hong Kong Open 2017: 13.38Hong Kong Cube Day 2019: 9.83WCA World Championship 2019: 8.88Jieyang Winter 2020: 8.00SacCubing X 2021: 13.56CubingUSA Western Championship 2021: 10.12SacCubing XI 2022: 9.93Bay Area Speedcubin' 29 AM 2022: 10.08Bay Area Speedcubin' 31A - Mill Valley 2022: 9.17A Bruin Cube Day 2022: 7.99CubingUSA Northeast Championship 2022: 7.55Berkeley Summer 2022: 7.46Rubik's WCA North American Championship 2022: 11.29Bay Area Speedcubin' 35 - Pacifica 2022: 10.13SacCubing XII 2022: 9.62Marshall Middle Slice 2022: 8.67Berkeley Fall 2022: 9.19WCC Western Championship 2022: 8.56Reno Fall 2022: 9.03Bay Area Speedcubin' 39 2022: 10.44Circle City Supercharged 2022: 8.61Bay Area Speedcubin' 40 - San Ramon 2022: 10.30SacCubing XIII 2023: 9.10Berkeley Winter B 2023: 9.97Bay Area Speedcubin' 41 2023: 9.71Marshall Cubing Spring 2023: 8.96Berkeley Spring 2023: 8.22Reno Spring 2023: 9.14Bay Area Speedcubin' 43 2023: 8.00Bay Area Speedcubin' 44 2023: 10.01Bay Area Speedcubin' 46 Live - SSF 2023: 8.38SacCubing XIV 2023: 8.79UCSD For Hemophilia 2023: 9.54Bay Area Speedcubin' 47 - Berkeley Pride 2023: 9.88Reno Summer 2023: 9.29Bay Area Speedcubin' 48 - 6.25 Berkeley 2023: 9.68CubingUSA Western Championship 2023: 9.23Canadian Championship 2023: 8.41UCSD Summer 2023: 7.36Bay Area Speedcubin' 50 - Berkeley 2023: 7.82Rubik's WCA World Championship 2023: 7.92Berkeley Summer 2023: 8.80Bay Area Speedcubin' 51 Live - SSF 2023: 8.06Reno Fall 2023: 8.56SacCubing XV 2023: 8.91Bay Area Speedcubin' 52 - Belmont 2023: 9.04Bay Area Speedcubin' 53 - Berkeley 2023: 9.11Davis Fall 2023: 8.89Bay Area Speedcubin' 54 Live - SSF 2023: 8.71Berkeley Fall 2023: 8.71Claws Up Winter 2023: 8.85UCSD Winter 2023: 8.37Bay Area Speedcubin' 55 - San Ramon 2024: 8.60SacCubing XVI 2024: 7.94Berkeley Winter 2024: 10.46Triton Tricubealon 2024: 7.69Reno Spring 2024: 8.73Bay Area Speedcubin' 58 - Berkeley 2024: 8.70Bay Area Speedcubin' 60 - Mountain View 2024: 9.55Berkeley Weekday Tricubealon 2024: 7.60Berkeley Spring 2024: 8.25Bay Area Speedcubin' 61 - San Jose 2024: 9.31Honolulu Kupulau 2024: 9.30Berkeley Summer 2024: 7.99Folsom Summer 2024: 9.78Davis Summer 2024: 9.16Bay Area Speedcubin' 65 - Berkeley 2024: 8.95Berkeley Fall 2024: 9.87Berkeley October Weekday Tricubealon 2024: 8.85Cool Down Berkeley 2024: 7.92Berkeley November Weekday Tricubealon 2024: 9.80Berkeley December Weekday Tricubealon 2024: 9.00SacCubing XIX 2025: 9.16Berkeley January Weekday Tricubealon 2025: 10.03Berkeley Winter 2025: 9.70Berkeley Spring 2025: 7.96Berkeley March Weekday NxN 2025: 9.21Davis Spring 2025: 8.59Berkeley Pre-Cal Day Tricubealon 2025: 10.05UCLA Spring 2025: 8.95Berkeley April Weekday Tricubealon 2025: 8.72SacMini 2025: 6.69Rubik's WCA World Championship 2025: 7.22Berkeley August Weekday 2025: 6.79Benicia Open 2025: 7.27Berkeley September Weekday 2025: 8.28Berkeley Fall 2025: 6.87Berkeley October Weekday 2025: 6.23Berkeley November Weekday 2025: 6.15Dublin California Open 2025: 5.74Berkeley December Weekday 2025: 6.62Bay Area Speedcubin' 68 - Belmont 2025: 6.82Berkeley January Weekday 2026: 7.55Berkeley February Weekday 2026: 6.81Berkeley Favorites 2026: 6.39Berkeley March Weekday 2026: 6.57Berkeley Pre-Cal Day 2026: 6.78Berkeley Spring 2026: 6.50Berkeley May Weekday 2026: 6.19Alameda County Fair 2026: 6.11Bay Area Speedcubin' 69 2026: 7.105.7413.5626 Aug 201729 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 one-handed single — 4 people have one; it is 0.45 away.
  • A sub-12 3×3 blindfolded single — 2 people have one; it is 2.96 away.

Targets move as he improves.