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The Middle Three
People → Dominican Republic → Chardan Jose Valdez Sierra

People · Dominican Republic

Chardan Jose Valdez Sierra

3×3 one-handed · top 2.3% of 73,695 all-time · competing since December 2013 · 2013SIER01

Chardan Jose Valdez Sierra has been competing for 13 years. His best event is the 3×3 one-handed: a personal-best single of 11.40, set at Santo Domingo Summer 2016, puts him in the top 2.3% of the 73,695 people who have ever been ranked in the event, and 3rd in the Dominican Republic. Until August 2010, no official 3×3 one-handed solve in the world had been that fast. Across 13 competitions since December 2013, he has put 498 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 93% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 10.03 in December 2013 to 7.73, a 23% improvement. Chardan has entered 13 competitions, more competitions than 94% of everyone who has ever competed.

3×3 one-handed
best event — top 2.3% of 73,695 all-time
11.40
signature single · Santo Domingo Summer 2016
498
official solves on the record
11%
solve-to-solve spread · steadier than 93% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingDominican Republic
3×3 one-handed11.4014.62
top 2.3%3 / 151
3×37.739.77
top 2.3%9 / 588
2×21.943.84
top 4.4%5 / 312
Pyraminx5.378.98
top 15.5%23 / 192
4×443.2648.59
top 16.1%21 / 136
5×51:28.151:46.41
top 25.8%16 / 74
3×3 Fewest Moves34 moves
early days — 3 solves3 / 25

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

Republica Dominicana Open 2013: 10.03Santo Domingo Spring 2014: 9.94Galerias 360 Open 2014: 8.72Back to 360 2014: 8.17Santo Domingo Spring 2015: 8.40Verano Cubero 2015: 9.16De Cabeza en 360 2016: 8.51Republica Dominicana Spring 2016: 7.73Santo Domingo Summer 2016: 8.04Santo Domingo Fall 2016: 8.90Speedcubing RD 2018: 7.87A Cubear Con Puzzlemania 2019: 8.51Santo Domingo Summer 2019: 8.997.7310.038 Dec 201320 Jun 2019

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-10 3×3 one-handed single — 779 people have one; it is 1.40 away.
  • A sub-6 3×3 single — 1,376 people have one; it is 1.73 away.

Targets move as he improves.