People · United States
Robert L. Tupker
Pyraminx · top 7.6% of 130,891 all-time · competing since January 2024 · 2024TUPK01
Robert L. Tupker has been competing for 3 years. His best event is the Pyraminx: a personal-best single of 3.99, set at SPAMtown III MN 2024, puts him in the top 7.6% of the 130,891 people who have ever been ranked in the event, and 1,989th in the United States. Until February 2008, no official Pyraminx solve in the world had been that fast. Across 17 competitions since January 2024, he has put 476 official solves on the record across eight events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 86% of the 36,406 competitors with ten or more counted rounds. His 3×3 best has come down from 36.28 in January 2024 to 15.44, a 57% improvement. Robert has entered 17 competitions, more competitions than 96% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | United States | |
|---|---|---|---|---|---|
| Pyraminx | 3.99 | 11.15 | top 7.6% | 1,989 / 29,168 | |
| Skewb | 5.17 | 7.63 | top 19.5% | 3,146 / 19,164 | |
| 3×3 | 15.44 | 19.41 | top 26.0% | 14,374 / 60,666 | |
| 2×2 | 4.13 | 5.80 | top 28.2% | 11,336 / 41,674 | |
| Clock | 16.77 | 19.76 | top 54.7% | 4,665 / 9,172 | |
| Square-1 | 33.64 | 43.14 | top 56.3% | 3,768 / 6,846 | |
| 4×4 | 1:46.14 | — | early days — 3 solves | 13,754 / 19,354 | |
| 3×3 one-handed | 1:02.65 | — | early days — 2 solves | 13,034 / 15,900 |
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
- 22 May 2026Five personal bests in one day at CubingUSA Heartland Championship 2026.
- 24 May 2025Three personal bests in one day at Algs in Ankeny 2025.
- 1 Mar 2025First sub-20 3×3: 18.94 at Cubing at Iowa State 2025.
- 16 Nov 2024Three personal bests in one day at SPAMtown III MN 2024.
- 13 Aug 2024Three personal bests in one day at Minnesota Meetup IV Tuesday 2024.
- 7 Jun 2024First sub-30 3×3: 26.61 at CubingUSA Heartland Championship 2024.
Competitions
- Iowa Championship 2026 · 19 Sep 2026 — 1 personal best set
- CubingUSA Heartland Championship 2026 · 22 May 2026 — 5 personal bests set
- St. Ansgar 2026 · 18 Apr 2026 — 1 personal best set
- Iowa Winter Cooldown 2026 · 28 Feb 2026
- Wisconsin Championship 2025 · 4 Oct 2025 — 2 personal bests set
- CubingUSA Great Lakes Championship 2025 · 1 Aug 2025
- Rubik's WCA World Championship 2025 · 3 Jul 2025 — 1 personal best set
- Cubing in the Cornfields IA 2025 · 28 Jun 2025 — 2 personal bests set
- Algs in Ankeny 2025 · 24 May 2025 — 3 personal bests set
- St. Ansgar 2025 · 5 Apr 2025 — 1 personal best set
- Cubing at Iowa State 2025 · 1 Mar 2025 — 2 personal bests set
- Big Cube Battle of Waterloo 2025 · 18 Jan 2025
- SPAMtown III MN 2024 · 16 Nov 2024 — 3 personal bests set
- Minnesota Meetup IV Tuesday 2024 · 13 Aug 2024 — 3 personal bests set
- CubingUSA Heartland Championship 2024 · 7 Jun 2024 — 5 personal bests set
- Algs in Ankeny 2024 · 9 Mar 2024 — 1 personal best set
- Big Cube Battle of Waterloo 2024 · 27 Jan 2024
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.
- Nathan Rahn — met in 69 rounds, finished ahead once
- Kaius Young — met in 61 rounds, finished ahead twice
- Lisa Kucala — met in 60 rounds, finished ahead 31 times
Next targets
- A sub-3 Pyraminx single — 4,783 people have one; it is 0.99 away.
- A sub-5 Skewb single — 13,481 people have one; it is 0.17 away.
Targets move as he improves.