People · United Kingdom
Isaac Rabindra Jay Mukerji
3×3 · top 1.9% of 288,433 all-time · competing since January 2025 · 2025MUKE01
Isaac Rabindra Jay Mukerji has been competing for a year. His best event is the 3×3: a personal-best single of 7.42, set at Manchester September 2026, puts him in the top 1.9% of the 288,433 people who have ever been ranked in the event, and 147th in the United Kingdom. Until July 2008, no official 3×3 solve in the world had been that fast. Across 9 competitions since January 2025, he has put 222 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 17% around a typical one; 97% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 23.93 in January 2025 to 7.42, a 69% improvement. Isaac has entered nine competitions, more competitions than 91% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | United Kingdom | |
|---|---|---|---|---|---|
| 3×3 | 7.42 | 9.02 | top 1.9% | 147 / 6,785 | |
| 2×2 | 2.03 | 3.52 | top 5.0% | 364 / 4,946 | |
| Pyraminx | 6.75 | 8.78 | top 25.8% | 1,026 / 3,704 | |
| Skewb | 6.33 | 9.98 | top 28.5% | 672 / 2,439 | |
| 3×3 one-handed | 23.94 | 30.52 | top 31.4% | 574 / 1,861 | |
| 4×4 | 55.64 | 1:00.16 | top 31.6% | 721 / 2,112 | |
| Clock | 41.42 | — | early days — 1 solve | 1,212 / 1,255 |
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
- 19 Sep 2026Three personal bests in one day at Manchester September 2026.
- 28 Mar 2026First sub-10 3×3: 8.39 at Bolton Spring 2026.
- 25 Oct 2025Three personal bests in one day at Manchester October 2025.
- 22 Aug 2025First sub-15 3×3: 13.28 at Rubik's UK Championship 2025.
- 22 Aug 2025Four personal bests in one day at Rubik's UK Championship 2025.
- 22 Feb 2025First sub-20 3×3: 19.49 at Manchester February 2025.
Competitions
- Manchester September 2026 · 19 Sep 2026 — 3 personal bests set
- Kewbz UK Championship 2026 · 28 Aug 2026 — 2 personal bests set
- Manchester Cubing League - Final 2026 · 4 Jul 2026 — 1 personal best set
- Manchester Cubing League - Third 2026 · 13 Jun 2026 — 1 personal best set
- Bolton Spring 2026 · 28 Mar 2026 — 2 personal bests set
- Manchester October 2025 · 25 Oct 2025 — 3 personal bests set
- Rubik's UK Championship 2025 · 22 Aug 2025 — 4 personal bests set
- Manchester February 2025 · 22 Feb 2025 — 2 personal bests set
- Manchester January 2025 · 25 Jan 2025
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.
- Caleb Wolf Dunn — met in 46 rounds, finished ahead once
- Maxwell Davies — met in 40 rounds, finished ahead 18 times
- Vi Dinh — met in 40 rounds, finished ahead 16 times
Next targets
- A sub-6 3×3 single — 1,419 people have one; it is 1.42 away.
- A sub-2 2×2 single — 9,039 people have one; it is 0.03 away.
Targets move as he improves.