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People · United States

Jackson Stempke

3×3 · top 0.48% of 284,439 all-time · competing since May 2022 · 2022STEM02

Jackson Stempke has been competing for 4 years. His best event is the 3×3: a personal-best single of 5.99, set at Nub Open Mission Viejo Spring 2025, puts him in the top 0.48% of the 284,439 people who have ever been ranked in the event, and 317th in the United States. Until June 2011, no official 3×3 solve in the world had been that fast. Across 22 competitions since May 2022, he has put 569 official solves on the record across eleven events. Solve to solve, his 3×3 times vary about 13% around a typical one, steadier than 59% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 15.34 in May 2022 to 5.99, a 61% improvement. Jackson has entered 22 competitions, more competitions than 97% of everyone who has ever competed.

3×3
best event — top 0.48% of 284,439 all-time
5.99
signature single · Nub Open Mission Viejo Spring 2025
569
official solves on the record
13%
solve-to-solve spread · steadier than 59% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingUnited States
3×35.997.76
top 0.48%317 / 59,724
2×21.353.51
top 1.5%619 / 40,951
3×3 one-handed14.6218.32
top 7.3%984 / 15,683
4×438.2243.54
top 10.0%1,492 / 19,072
Skewb4.077.74
top 11.4%1,756 / 18,907
5×51:16.391:28.29
top 16.4%1,273 / 9,401
6×62:24.352:29.12
top 22.8%808 / 4,196
Megaminx1:27.061:32.13
top 26.2%1,814 / 7,841
Pyraminx7.449.88
top 31.5%8,801 / 28,708
7×74:49.915:02.20
top 47.7%1,384 / 3,184
Square-11:56.83—
early days — 2 solves6,680 / 6,743

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

A Bruin Cube Day 2022: 15.34Marshall Middle Slice 2022: 13.93Diamond Bar September 2022: 13.16WCC Western Championship 2022: 11.82Marshall Cubing Spring 2023: 9.57Give Back RPV 2023: 8.19Pride in Long Beach 2023: 8.69Rialto Cubing Summer 2023: 8.36Santa Ana Summer A 2023: 8.48UCSD Unofficial Events 2023: 7.94Jurupa Valley Cubing Fall 2023: 7.71Thankful for Cubing RPV 2023: 7.93University Heights Cubing Winter 2024: 8.46Fullerton Winter 2024: 7.68Los Angeles Newcomers 2024: 7.17Aliso Niguel Summer 2024: 6.61SoCal Speedcubing at Super STEM Saturday 2025: 7.62Nub Open Mission Viejo Spring 2025: 5.99West Coast Cubing Tour: Los Angeles 2025: 7.49Rubik's WCA World Championship 2025: 7.18UCSD Unofficial Events 2025: 6.51Temecula Valley Summer 2026: 8.215.9915.348 May 202225 Jul 2026

Best single per competition, 3×3. Faster is higher — the axis is the right way up.

The story so far

Competitions

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.

Next targets

  • A sub-5 3×3 single — 344 people have one; it is 0.99 away.
  • A sub-1 2×2 single — 1,032 people have one; it is 0.35 away.

Targets move as he improves.