People · Singapore
Isaac Shi En Lee
3×3 · top 4.0% of 284,439 all-time · competing since November 2023 · 2023LEEI03
Isaac Shi En Lee has been competing for 3 years. His best event is the 3×3: a personal-best single of 8.61, set at Singapore Championship 2026, puts him in the top 4.0% of the 284,439 people who have ever been ranked in the event, and 109th in Singapore. Until July 2008, no official 3×3 solve in the world had been that fast. Across 9 competitions since November 2023, he has put 145 official solves on the record across six events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 91% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 14.57 in November 2023 to 8.61, a 41% 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 | Singapore | |
|---|---|---|---|---|---|
| 3×3 | 8.61 | 10.85 | top 4.0% | 109 / 1,546 | |
| 5×5 | 1:04.80 | 1:21.91 | top 8.3% | 41 / 251 | |
| 4×4 | 37.80 | 41.66 | top 9.6% | 82 / 462 | |
| 2×2 | 2.65 | 3.88 | top 10.4% | 149 / 1,053 | |
| 3×3 one-handed | 19.42 | 23.36 | top 19.0% | 137 / 460 | |
| Pyraminx | 15.05 | — | early days — 3 solves | 546 / 645 |
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
- 20 Feb 2026Four personal bests in one day at Singapore Championship 2026.
- 6 Sep 2025First sub-10 3×3: 9.82 at Mofunland Speedcubing Singapore 2025.
- 6 Sep 2025Four personal bests in one day at Mofunland Speedcubing Singapore 2025.
- 9 Aug 2025Three personal bests in one day at Singapore Independence Day 2025.
- 25 Nov 2023First competition: Johor Mini 2023. A 14.57 3×3 single to start from.
Competitions
- Singapore Championship 2026 · 20 Feb 2026 — 4 personal bests set
- Mofunland Speedcubing Singapore 2025 · 6 Sep 2025 — 4 personal bests set
- Singapore Independence Day 2025 · 9 Aug 2025 — 3 personal bests set
- Singapore Jumbo June 2025 · 8 Jun 2025 — 1 personal best set
- Singapore Championship 2025 · 7 Feb 2025
- Singapore Freeze 2024 · 7 Dec 2024 — 1 personal best set
- Singapore Mini 2024 · 25 May 2024 — 2 personal bests set
- MYHM Singapore Championship 2024 · 2 Feb 2024 — 2 personal bests set
- Johor Mini 2023 · 25 Nov 2023 — 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.
- Ng Jia Quan (黄佳铨) — met in 28 rounds, never finished ahead
- Koh Zi Yi — met in 23 rounds, never finished ahead
- Akash Sreedharan (ஆகாஷ் ஸ்ரீதரன்) — met in 21 rounds, finished ahead twice
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 0.61 away.
- A sub-1:00 5×5 single — 2,252 people have one; it is 4.80 away.
Targets move as he improves.