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People → Slovakia → Dan Anton Kosťov

People · Slovakia

Dan Anton Kosťov

Clock · top 3.6% of 32,048 all-time · competing since September 2023 · 2023KOSO01

Dan Anton Kosťov has been competing for 3 years. His best event is the Clock: a personal-best single of 4.66, set at Dolné Orešany Clock Day 2025, puts him in the top 3.6% of the 32,048 people who have ever been ranked in the event, and 8th in Slovakia. Until June 2015, no official Clock solve in the world had been that fast. Across 19 competitions since September 2023, he has put 813 official solves on the record across twelve events. Solve to solve, his 3×3 times vary about 14% around a typical one; 77% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 11.40 in September 2023 to 9.00, a 21% improvement. Dan has entered 19 competitions, more competitions than 97% of everyone who has ever competed.

Clock
best event — top 3.6% of 32,048 all-time
4.66
signature single · Dolné Orešany Clock Day 2025
813
official solves on the record
14%
solve-to-solve spread · wider than 77% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingSlovakia
Clock4.666.12
top 3.6%8 / 97
2×21.813.23
top 3.6%25 / 375
3×39.0011.23
top 4.9%39 / 447
Pyraminx4.466.98
top 10.0%44 / 254
Square-113.3217.53
top 12.6%11 / 87
4×446.6455.70
top 20.4%45 / 214
3×3 one-handed21.0628.13
top 23.4%39 / 145
3×3 Fewest Moves35 moves45.67
early days — 3 solves17 / 48
Skewb10.0918.58
top 55.5%119 / 182
Megaminx2:28.04—
top 60.2%58 / 93
5×52:32.51—
top 67.0%69 / 110
3×3 blindfolded4:35.59—
early days — 3 solves29 / 33

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

Slovak Nationals 2023: 11.40Dolné Orešany Cube Day 2023: 10.99Bratislava Autumn 2023: 10.31Bratislava Spring Is Coming 2024: 10.82Košice Open 2024: 9.25Slovak Nationals 2024: 10.54Banská Bystrica Open 2024: 10.84Cubing in Ružinov: January 2025: 10.49Cubing in Ružinov: February 2025: 10.60Slovak Championship 2025: 11.68Back to School in Ivanka 2025: 10.51Dolné Orešany Clock Day 2025: 9.57Ladce Open 2025: 9.92Suchá nad Parnou Open 2026: 10.68Cubing in Ružinov: March 2026: 9.18Ružomberok Open 2026: 10.95Cubing in Ružinov: April 2026: 9.00Dolné Orešany Open 2026: 11.53Slovak Championship 2026: 10.049.0011.6815 Sep 20232 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-4 Clock single — 741 people have one; it is 0.66 away.
  • A sub-1 2×2 single — 1,032 people have one; it is 0.81 away.

Targets move as he improves.