People · Singapore
Koh Zhi Ren Zac
3×3 · top 72.8% of 284,439 all-time · competing since June 2025 · 2025ZACK01
Koh Zhi Ren Zac has been competing for a year. His best event is the 3×3: a personal-best single of 36.66, set at One Shamelin Cube Open 2025, puts him in the top 72.8% of the 284,439 people who have ever been ranked in the event, and 1,334th in Singapore. Across 1 competition since June 2025, he has put 5 official solves on the record across one event.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Singapore | |
|---|---|---|---|---|---|
| 3×3 | 36.66 | 39.31 | top 72.8% | 1,334 / 1,546 |
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 story so far
- 7 Jun 2025First competition: One Shamelin Cube Open 2025. A 36.66 3×3 single to start from.
Competitions
- One Shamelin Cube Open 2025 · 7 Jun 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.
Next targets
- A sub-30 3×3 single — 177,856 people have one; it is 6.66 away.
Targets move as he improves.