People · Republic of Korea
Hayul Chang (장하율)
3×3 · top 45.0% of 284,439 all-time · competing since December 2023 · 2023CHAH03
Hayul Chang (장하율) has been competing for 3 years. His best event is the 3×3: a personal-best single of 21.85, set at Seoul Summer 2026, puts him in the top 45.0% of the 284,439 people who have ever been ranked in the event, and 2,304th in Republic of Korea. Across 7 competitions since December 2023, he has put 55 official solves on the record across five events. Solve to solve, his 3×3 times vary about 12% around a typical one, an early reading from 6 counted rounds. His 3×3 best has come down from 38.64 in December 2023 to 21.85, a 43% improvement. Hayul has entered seven competitions, more competitions than 88% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Republic of Korea | |
|---|---|---|---|---|---|
| 3×3 | 21.85 | 25.23 | top 45.0% | 2,304 / 4,352 | |
| 2×2 | 6.63 | 10.60 | top 57.2% | 1,570 / 2,319 | |
| Skewb | 14.57 | 24.60 | top 76.9% | 695 / 854 | |
| Pyraminx | 14.22 | 16.83 | top 78.8% | 1,067 / 1,271 | |
| Square-1 | 2:14.61 | — | early days — 1 solve | 370 / 371 |
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
- 17 Jan 2026First sub-30 3×3: 25.76 at Seoul Winter 2026.
- 15 Dec 2023First competition: Korean Championship 2023. A 38.64 3×3 single to start from.
Competitions
- Seoul Summer 2026 · 19 Jul 2026 — 1 personal best set
- Seoul Spring 2026 · 22 Mar 2026 — 1 personal best set
- Seoul Winter 2026 · 17 Jan 2026 — 2 personal bests set
- Silent Korea Open 2025 · 23 Aug 2025
- Busan Spring 2024 · 6 Apr 2024
- Anyang Haseyo 2024 · 9 Mar 2024 — 1 personal best set
- Korean Championship 2023 · 15 Dec 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.
- Choi Goho (최고호) — met in 13 rounds, never finished ahead
- Ko Youngjin (고영진) — met in 12 rounds, never finished ahead
- Yoochan Hong (홍유찬) — met in 12 rounds, never finished ahead
Next targets
- A sub-20 3×3 single — 113,584 people have one; it is 1.85 away.
- A sub-6 2×2 single — 95,042 people have one; it is 0.63 away.
Targets move as he improves.