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People → Latvia → Frederiks Rūdolfs Kronbergs

People · Latvia

Frederiks Rūdolfs Kronbergs

3×3 · top 1.2% of 284,439 all-time · competing since November 2017 · 2017KRON03

Frederiks Rūdolfs Kronbergs has been competing for 9 years. His best event is the 3×3: a personal-best single of 6.84, set at Rodenpois Open 2023, puts him in the top 1.2% of the 284,439 people who have ever been ranked in the event, and 3rd in Latvia. Until November 2010, no official 3×3 solve in the world had been that fast. Across 24 competitions since November 2017, he has put 1,668 official solves on the record across 14 events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 68% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 18.72 in November 2017 to 6.84, a 63% improvement. Frederiks has entered 24 competitions, more competitions than 97% of everyone who has ever competed.

3×3
best event — top 1.2% of 284,439 all-time
6.84
signature single · Rodenpois Open 2023
1,668
official solves on the record
12%
solve-to-solve spread · steadier than 68% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingLatvia
3×36.848.91
top 1.2%3 / 309
3×3 one-handed11.6514.11
top 2.6%4 / 113
2×21.602.87
top 2.6%10 / 237
Pyraminx2.725.73
top 2.8%9 / 185
Square-18.7312.81
top 4.1%3 / 48
Skewb2.925.05
top 4.6%10 / 117
4×433.4741.75
top 5.3%7 / 112
Clock7.759.32
top 14.0%12 / 60
Megaminx1:09.651:22.96
top 15.4%9 / 73
5×51:17.411:26.52
top 17.1%15 / 74
3×3 Fewest Moves31 moves33.33
top 17.4%8 / 42
6×62:44.452:51.02
top 33.2%14 / 39
7×75:49.186:03.46
top 65.0%21 / 31
3×3 blindfolded4:05.84—
top 69.4%18 / 24

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

Latvian Open 2017: 18.72Riga Special 2018: 15.80Riga Open 2018: 14.12Tallinn Open 2018: 13.72Sigulda Open 2018: 12.48Latvian Open 2018: 11.19Tartu Open 2018: 8.68Kaunas Open 2019: 9.02Tallinn Open 2019: 8.61Telšiai Open 2019: 8.88Sigulda Open 2019: 7.66Estonian Open 2019: 8.47Latvian Open 2019: 8.77Jāņi Kārķos 2022: 8.24Valmiera Open 2022: 9.10PärNuti Cubing 2022: 8.06Latvian Championship 2022: 8.55Carnikavas Pavasaris 2023: 7.83Rodenpois Open 2023: 6.84Sigulda Open 2023: 7.87Lithuanian Nationals 2023: 7.61Rīga Open 2024: 8.44Latvijas Čempionāts 2025: 7.67Rīga Open 2026: 8.446.8418.724 Nov 201715 Feb 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-6 3×3 single — 1,376 people have one; it is 0.84 away.
  • A sub-10 3×3 one-handed single — 779 people have one; it is 1.65 away.

Targets move as he improves.