People · United States
Jacob Kopelman
3×3 · top 6.8% of 284,439 all-time · competing since April 2017 · 2017KOPE01
Jacob Kopelman has been competing for 9 years. His best event is the 3×3: a personal-best single of 9.77, set at CubingUSA Nationals 2018, puts him in the top 6.8% of the 284,439 people who have ever been ranked in the event, and 3,735th in the United States. Until October 2007, no official 3×3 solve in the world had been that fast. Across 12 competitions since April 2017, he has put 186 official solves on the record across five events. Solve to solve, his 3×3 times vary about 16% around a typical one; 90% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 22.89 in April 2017 to 9.77, a 57% improvement. Jacob has entered twelve competitions, more competitions than 94% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | United States | |
|---|---|---|---|---|---|
| 3×3 | 9.77 | 11.85 | top 6.8% | 3,735 / 59,724 | |
| 2×2 | 3.12 | 4.26 | top 15.6% | 6,111 / 40,951 | |
| Skewb | 5.25 | 8.11 | top 20.1% | 3,207 / 18,907 | |
| 4×4 | 50.01 | 53.00 | top 24.7% | 3,783 / 19,072 | |
| 3×3 one-handed | 23.20 | 32.27 | top 29.3% | 3,791 / 15,683 |
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
- 12 May 2018First sub-10 3×3: 9.97 at Lower Moreland Spring 2018.
- 21 Apr 2018Four personal bests in one day at New York City Spring 2018.
- 29 Jul 2017First sub-20 3×3: 13.84 at Cubing Knights 2017.
- 29 Jul 2017First sub-15 3×3: 13.84 at Cubing Knights 2017.
- 22 Apr 2017First competition: Red Cross Cubing Open 2017. A 22.89 3×3 single to start from.
Competitions
- Lower Moreland Fall 2018 · 10 Nov 2018 — 1 personal best set
- CubingUSA Nationals 2018 · 27 Jul 2018 — 1 personal best set
- First State 2018 · 14 Jul 2018
- Lower Moreland Spring 2018 · 12 May 2018 — 1 personal best set
- New York City Spring 2018 · 21 Apr 2018 — 4 personal bests set
- No Place For DNF Spring 2018 · 7 Apr 2018 — 1 personal best set
- Weston Fall 2017 · 11 Nov 2017 — 1 personal best set
- Sharon Summer 2017 · 5 Aug 2017
- Cubing Knights 2017 · 29 Jul 2017 — 2 personal bests set
- Lexington Summer 2017 · 1 Jul 2017 — 1 personal best set
- Big Cube Bash 2017 · 13 May 2017 — 1 personal best set
- Red Cross Cubing Open 2017 · 22 Apr 2017
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.
- AJ Kamal — met in 28 rounds, never finished ahead
- Livia Kleiner — met in 26 rounds, never finished ahead
- Chris Chi — met in 24 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 1.77 away.
- A sub-3 2×2 single — 26,570 people have one; it is 0.12 away.
Targets move as he improves.