People · United States
Leah Shefferman
3×3 · top 5.9% of 284,439 all-time · competing since February 2017 · 2017SHEF01
Leah Shefferman has been competing for 10 years. Her best event is the 3×3: a personal-best single of 9.43, set at Kew Forest Open 2018, puts her in the top 5.9% of the 284,439 people who have ever been ranked in the event, and 3,282nd in the United States. Until February 2008, no official 3×3 solve in the world had been that fast. Across 11 competitions since February 2017, she has put 302 official solves on the record across nine events. Solve to solve, her 3×3 times vary about 14% around a typical one; 74% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. Her 3×3 best has come down from 17.34 in February 2017 to 9.43, a 46% improvement. Leah has entered eleven competitions, more competitions than 93% 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 | 9.43 | 10.91 | top 5.9% | 3,282 / 59,724 | |
| Pyraminx | 3.88 | 5.54 | top 7.1% | 1,803 / 28,708 | |
| 2×2 | 2.31 | 3.53 | top 7.1% | 2,838 / 40,951 | |
| 4×4 | 39.21 | 49.87 | top 11.2% | 1,656 / 19,072 | |
| 3×3 one-handed | 16.79 | 28.95 | top 12.1% | 1,570 / 15,683 | |
| Skewb | 4.95 | 10.86 | top 17.7% | 2,808 / 18,907 | |
| Megaminx | 1:21.11 | 1:38.56 | top 22.6% | 1,551 / 7,841 | |
| 5×5 | 1:47.84 | 1:57.40 | top 41.1% | 3,328 / 9,401 | |
| 6×6 | 3:59.01 | 4:03.96 | top 65.1% | 2,520 / 4,196 |
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
- 1 Aug 2019Three personal bests in one day at CubingUSA Nationals 2019.
- 22 Sep 2018First sub-10 3×3: 9.43 at Kew Forest Open 2018.
- 24 Mar 2018Three personal bests in one day at Hudson Valley Open 2018.
- 13 Jan 2018Four personal bests in one day at New York City Winter 2018.
- 23 Sep 2017Three personal bests in one day at Princeton Fall 2017.
- 10 Jun 2017First sub-15 3×3: 11.01 at Hudson Valley Spring 2017.
Competitions
- Brooklyn Fall 2019 · 12 Oct 2019 — 2 personal bests set
- CubingUSA Nationals 2019 · 1 Aug 2019 — 3 personal bests set
- Long Island Winter 2019 · 23 Feb 2019 — 2 personal bests set
- Liberty Science Center Open 2018 · 8 Dec 2018 — 1 personal best set
- Kew Forest Open 2018 · 22 Sep 2018 — 2 personal bests set
- New York City Spring 2018 · 21 Apr 2018 — 1 personal best set
- Hudson Valley Open 2018 · 24 Mar 2018 — 3 personal bests set
- New York City Winter 2018 · 13 Jan 2018 — 4 personal bests set
- Princeton Fall 2017 · 23 Sep 2017 — 3 personal bests set
- Hudson Valley Spring 2017 · 10 Jun 2017 — 1 personal best set
- Ledgewood Winter Open 2017 · 11 Feb 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 her.
- Kymberlyn Calderon — met in 59 rounds, never finished ahead
- Chris Chi — met in 52 rounds, finished ahead 6 times
- Krish Shah-Nathwani — met in 51 rounds, never finished ahead
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 1.43 away.
- A sub-3 Pyraminx single — 4,700 people have one; it is 0.88 away.
Targets move as she improves.