People · Ghana
Zaffery Hammond-Aryee
Skewb · top 6.8% of 73,281 all-time · competing since May 2022 · 2022HAMM04
Zaffery Hammond-Aryee has been competing for 4 years. His best event is the Skewb: a personal-best single of 3.34, set at Rubik's WCA World Championship 2025, puts him in the top 6.8% of the 73,281 people who have ever been ranked in the event, and 1st in Ghana. Until February 2014, no official Skewb solve in the world had been that fast. Across 7 competitions since May 2022, he has put 270 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 57% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 30.32 in May 2022 to 13.07, a 57% improvement. Zaffery 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 | Ghana | |
|---|---|---|---|---|---|
| Skewb | 3.34 | 5.05 | top 6.8% | 1 / 7 | |
| Pyraminx | 5.67 | 9.94 | top 17.6% | 1 / 17 | |
| 3×3 | 13.07 | 16.71 | top 17.7% | 5 / 67 | |
| Clock | 9.08 | 10.18 | top 20.4% | 1 / 1 | |
| 2×2 | 4.06 | 5.03 | top 27.3% | 2 / 39 | |
| 4×4 | 1:07.64 | 1:26.27 | top 44.5% | 3 / 6 | |
| Square-1 | 30.36 | 47.80 | top 50.0% | 1 / 1 | |
| 5×5 | 2:04.07 | 2:16.77 | top 51.8% | 1 / 2 | |
| 3×3 one-handed | 42.75 | 45.30 | top 69.0% | 2 / 3 | |
| Megaminx | 5:39.46 | — | early days — 1 solve | 5 / 5 |
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
- 3 Jul 2025Three personal bests in one day at Rubik's WCA World Championship 2025.
- 6 Apr 2025First sub-15 3×3: 14.26 at Mega Mania Cape Town 2025.
- 6 Apr 2025Five personal bests in one day at Mega Mania Cape Town 2025.
- 14 Dec 2024Seven personal bests in one day at Cape Cubes Challenge 2024.
- 21 Sep 2024First sub-20 3×3: 17.87 at Rubik's WCA African Championship 2024.
- 21 Sep 2024Four personal bests in one day at Rubik's WCA African Championship 2024.
Competitions
- Rubik's WCA World Championship 2025 · 3 Jul 2025 — 3 personal bests set
- Mega Mania Cape Town 2025 · 6 Apr 2025 — 5 personal bests set
- Puzzles in Pinehurst 2025 · 18 Jan 2025 — 2 personal bests set
- Cape Cubes Challenge 2024 · 14 Dec 2024 — 7 personal bests set
- Rubik's WCA African Championship 2024 · 21 Sep 2024 — 4 personal bests set
- Rubik's WCA African Championship 2022 · 7 Oct 2022 — 3 personal bests set
- Speedcubes Cape Town 2022 · 29 May 2022 — 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.
- Daniel Rush — met in 55 rounds, finished ahead 5 times
- Jesse Osburn — met in 52 rounds, finished ahead 3 times
- Micah Willenburgh — met in 45 rounds, finished ahead twice
Next targets
- A sub-3 Skewb single — 3,646 people have one; it is 0.34 away.
- A sub-5 Pyraminx single — 17,019 people have one; it is 0.67 away.
Targets move as he improves.