People · United States
Jack A. Kern
2×2 · top 4.6% of 189,179 all-time · competing since May 2017 · 2017KERN01
Jack A. Kern has been competing for 10 years. His best event is the 2×2: a personal-best single of 1.97, set at Grand Forks 2025, puts him in the top 4.6% of the 189,179 people who have ever been ranked in the event, and 1,860th in the United States. Until February 2008, no official 2×2 solve in the world had been that fast. Across 5 competitions since May 2017, he has put 234 official solves on the record across 13 events. Solve to solve, his 3×3 times vary about 14% around a typical one; 70% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 16.74 in May 2017 to 9.30, a 44% improvement. Jack has entered five competitions, more competitions than 83% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | United States | |
|---|---|---|---|---|---|
| 2×2 | 1.97 | 3.79 | top 4.6% | 1,860 / 41,674 | |
| 3×3 | 9.30 | 11.51 | top 5.6% | 3,187 / 60,666 | |
| 4×4 | 36.52 | 44.78 | top 8.3% | 1,262 / 19,354 | |
| Megaminx | 59.08 | 1:08.28 | top 9.6% | 677 / 8,026 | |
| Pyraminx | 4.49 | 7.88 | top 10.2% | 2,697 / 29,168 | |
| Square-1 | 12.42 | 16.06 | top 10.8% | 766 / 6,846 | |
| Skewb | 4.38 | 7.10 | top 13.6% | 2,135 / 19,164 | |
| 3×3 one-handed | 24.31 | 29.18 | top 32.5% | 4,295 / 15,900 | |
| 6×6 | 2:47.13 | 3:08.51 | top 34.6% | 1,261 / 4,262 | |
| 5×5 | 1:40.67 | 1:46.26 | top 35.9% | 2,887 / 9,537 | |
| 7×7 | 4:56.61 | 5:37.74 | early days — 3 solves | 1,467 / 3,236 | |
| 3×3 blindfolded | 3:42.90 | — | early days — 2 solves | 1,353 / 2,128 | |
| Clock | 25.40 | — | early days — 3 solves | 6,976 / 9,172 |
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
Best single per competition, 3×3. Faster is higher — the axis is the right way up.
The story so far
- 4 Oct 2025First sub-10 3×3: 9.60 at Grand Forks 2025.
- 4 Oct 2025Six personal bests in one day at Grand Forks 2025.
- 28 Sep 2019Six personal bests in one day at Sioux Fall 2019.
- 17 Nov 2018Seven personal bests in one day at Fargo Fall 2018.
- 27 Jan 2018First sub-15 3×3: 11.22 at North Star Cubing Challenge 2018.
- 27 Jan 2018Three personal bests in one day at North Star Cubing Challenge 2018.
Competitions
- Grand Forks 2025 · 4 Oct 2025 — 6 personal bests set
- Sioux Fall 2019 · 28 Sep 2019 — 6 personal bests set
- Fargo Fall 2018 · 17 Nov 2018 — 7 personal bests set
- North Star Cubing Challenge 2018 · 27 Jan 2018 — 3 personal bests set
- Minnesota Cube Melt 2017 · 6 May 2017 — 1 personal best set
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.
- Tyler Robinson — met in 52 rounds, finished ahead 3 times
- Walker Welch — met in 44 rounds, finished ahead twice
- Carter Kucala — met in 44 rounds, never finished ahead
Next targets
- A sub-1 2×2 single — 1,050 people have one; it is 0.97 away.
- A sub-8 3×3 single — 8,101 people have one; it is 1.30 away.
Targets move as he improves.