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People → China → Yunfa Cao (曹云发)

People · China

Yunfa Cao (曹云发)

Square-1 · top 17.4% of 25,272 all-time · competing since November 2009 · 2009CAOY01

Yunfa Cao (曹云发) has been competing for 17 years. His best event is the Square-1: a personal-best single of 15.44, set at Hefei Spring 2012, puts him in the top 17.4% of the 25,272 people who have ever been ranked in the event, and 272nd in China. Across 7 competitions since November 2009, he has put 220 official solves on the record across eleven events. Solve to solve, his 3×3 times vary about 11% around a typical one, steadier than 92% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 24.02 in November 2009 to 13.78, a 43% improvement. Yunfa has entered seven competitions, more competitions than 88% of everyone who has ever competed.

Square-1
best event — top 17.4% of 25,272 all-time
15.44
signature single · Hefei Spring 2012
220
official solves on the record
11%
solve-to-solve spread · steadier than 92% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingChina
Square-115.4431.92
top 17.4%272 / 1,362
3×313.7815.68
top 20.2%7,832 / 28,153
3×3 one-handed24.3829.54
top 32.5%3,135 / 5,922
2×24.837.59
top 37.2%6,404 / 15,796
4×41:11.911:17.97
top 48.7%4,441 / 5,926
Pyraminx10.3116.49
top 55.4%5,770 / 10,224
5×52:18.272:41.58
top 60.1%2,366 / 2,816
3×3 Fewest Moves48 moves
early days — 2 solves864 / 1,058
Megaminx3:15.254:02.29
top 79.4%1,595 / 1,678
Clock39.021:00.79
top 92.7%1,776 / 1,843
6×67:18.80
early days — 2 solves1,347 / 1,349

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

Harbin Open 2009: 24.02Hefei After Term Open 2011: 14.31Zhengzhou Autumn 2011: 15.58Hefei Spring 2012: 14.13Nanjing Spring 2012: 13.78Hefei Summer 2012: 14.1313.7824.028 Nov 20095 Aug 2012

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-15 Square-1 single — 4,160 people have one; it is 0.44 away.
  • A sub-12 3×3 single — 39,535 people have one; it is 1.78 away.

Targets move as he improves.