People · Singapore
Koh Kai-En Jonathan
Skewb · top 9.2% of 73,281 all-time · competing since June 2023 · 2023JONA03
Koh Kai-En Jonathan has been competing for 3 years. His best event is the Skewb: a personal-best single of 3.75, set at Singapore Championship 2025, puts him in the top 9.2% of the 73,281 people who have ever been ranked in the event, and 46th in Singapore. Until February 2014, no official Skewb solve in the world had been that fast. Across 4 competitions since June 2023, he has put 45 official solves on the record across three events. His Skewb best has come down from 4.67 in June 2023 to 3.75, a 20% improvement. Koh has entered four competitions, more competitions than 78% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Singapore | |
|---|---|---|---|---|---|
| Skewb | 3.75 | 5.83 | top 9.2% | 46 / 353 | |
| 3×3 | 10.71 | 14.14 | top 9.6% | 245 / 1,546 | |
| 3×3 one-handed | 29.94 | 33.20 | top 46.5% | 277 / 460 |
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, Skewb. Faster is higher — the axis is the right way up.
The story so far
- 7 Feb 2025First sub-15 3×3: 13.04 at Singapore Championship 2025.
- 4 Jun 2023First competition: Singapore AMK CC Cubing B 2023. A 15.26 3×3 single to start from.
Competitions
- Singapore Championship 2026 · 20 Feb 2026 — 1 personal best set
- OH My March Singapore 2025 · 30 Mar 2025
- Singapore Championship 2025 · 7 Feb 2025 — 2 personal bests set
- Singapore AMK CC Cubing B 2023 · 4 Jun 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.
- Reyansh Sameer Chawan (रेयांश समीर चव्हाण) — met in 8 rounds, finished ahead 3 times
- Luis Tan Hong Yi (陈宏溢) — met in 8 rounds, finished ahead once
- Reuel Franz Ramirez Magracia (刘埃尔) — met in 8 rounds, never finished ahead
Next targets
- A sub-3 Skewb single — 3,646 people have one; it is 0.75 away.
- A sub-10 3×3 single — 21,172 people have one; it is 0.71 away.
Targets move as he improves.