People · Australia
Bradley Tjahja
2×2 · top 7.3% of 189,179 all-time · competing since November 2023 · 2023TJAH01
Bradley Tjahja has been competing for 3 years. His best event is the 2×2: a personal-best single of 2.32, set at Melbourne Cube Days 2024, puts him in the top 7.3% of the 189,179 people who have ever been ranked in the event, and 555th in Australia. Until February 2008, no official 2×2 solve in the world had been that fast. Across 6 competitions since November 2023, he has put 168 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 14% around a typical one; 69% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 22.89 in November 2023 to 11.61, a 49% improvement. Bradley has entered six competitions, more competitions than 86% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Australia | |
|---|---|---|---|---|---|
| 2×2 | 2.32 | 5.24 | top 7.3% | 555 / 8,727 | |
| 3×3 | 11.61 | 14.33 | top 12.6% | 1,136 / 11,943 | |
| 4×4 | 51.82 | 57.66 | top 27.1% | 715 / 3,108 | |
| 5×5 | 1:32.48 | 1:45.28 | top 29.4% | 411 / 1,412 | |
| Clock | 13.21 | — | early days — 1 solve | 438 / 1,159 | |
| Pyraminx | 8.79 | 13.11 | top 43.0% | 2,393 / 6,109 | |
| 6×6 | 3:20.67 | — | early days — 1 solve | 323 / 667 | |
| Skewb | 9.65 | 16.48 | top 52.8% | 1,742 / 3,589 | |
| Megaminx | 2:24.32 | — | early days — 2 solves | 754 / 1,313 | |
| 3×3 one-handed | 41.13 | — | top 66.9% | 1,601 / 2,685 | |
| Square-1 | 51.11 | — | early days — 2 solves | 745 / 920 | |
| 7×7 | 6:59.50 | — | early days — 1 solve | 413 / 540 |
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
- 24 Jan 2025Three personal bests in one day at Melbourne Summer 2025.
- 30 Nov 2024First sub-20 3×3: 14.00 at Melbourne Cube Days 2024.
- 30 Nov 2024First sub-15 3×3: 14.00 at Melbourne Cube Days 2024.
- 30 Nov 2024Five personal bests in one day at Melbourne Cube Days 2024.
- 11 Nov 2023First competition: Melbourne Cube Days 2023. A 22.89 3×3 single to start from.
Competitions
- Melbourne Cube Days 2025 · 29 Nov 2025 — 1 personal best set
- VIC State Championship 2025 · 31 May 2025
- Melbourne Summer 2025 · 24 Jan 2025 — 3 personal bests set
- Melbourne Cube Days 2024 · 30 Nov 2024 — 5 personal bests set
- Altona Algorithms 2024 · 2 Mar 2024 — 2 personal bests set
- Melbourne Cube Days 2023 · 11 Nov 2023
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.
- Hallel Ben-Meir — met in 45 rounds, never finished ahead
- Roman Rudakov — met in 45 rounds, never finished ahead
- Ben Wakelin — met in 44 rounds, finished ahead 7 times
Next targets
- A sub-2 2×2 single — 9,039 people have one; it is 0.32 away.
- A sub-10 3×3 single — 21,606 people have one; it is 1.61 away.
Targets move as he improves.