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The Middle Three
People → Republic of Korea → Jong-Ho Jeong (정종호)

People · Republic of Korea

Jong-Ho Jeong (정종호)

3×3 · top 0.52% of 284,439 all-time · competing since July 2008 · 2008JONG03

Jong-Ho Jeong (정종호) has been competing for 18 years. His best event is the 3×3: a personal-best single of 6.05, set at Korean Championship 2019, puts him in the top 0.52% of the 284,439 people who have ever been ranked in the event, and 38th in Republic of Korea. Until June 2011, no official 3×3 solve in the world had been that fast. Across 78 competitions since July 2008, he has put 3,815 official solves on the record across 17 events. Solve to solve, his 3×3 times vary about 14% around a typical one; 76% of the 35,811 competitors with ten or more counted rounds hold a tighter spread. His 3×3 best has come down from 14.94 in July 2008 to 6.05, a 60% improvement. He has entered 78 competitions, more competitions than 99% of everyone who has ever competed.

3×3
best event — top 0.52% of 284,439 all-time
6.05
signature single · Korean Championship 2019
3,815
official solves on the record
14%
solve-to-solve spread · wider than 76% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingRepublic of Korea
3×36.058.27
top 0.52%38 / 4,352
5×546.9957.70
top 1.0%15 / 716
4×427.1831.28
top 1.4%36 / 1,308
2×21.392.36
top 1.7%41 / 2,319
3×3 one-handed11.8314.25
top 2.8%37 / 966
3×3 blindfolded24.6032.22
top 2.8%9 / 217
6×61:38.671:53.48
top 3.8%19 / 329
Pyraminx3.074.77
top 3.9%70 / 1,271
Megaminx47.7854.35
top 4.2%34 / 524
Skewb2.866.84
top 4.3%49 / 854
3×3 Fewest Moves27 moves34.00
top 8.0%19 / 173
7×72:58.693:15.77
top 10.3%40 / 254
Square-112.7618.86
top 11.4%48 / 371
3×3 Multi-Blind11 of 11 cubes · 40:22—
top 13.6%11 / 74
4×4 blindfolded6:28.30—
top 33.0%24 / 48
Clock15.4418.46
top 49.7%336 / 536
5×5 blindfolded20:57.00—
early days — 1 solve27 / 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

Cheonan Cube Championship 2008: 14.94Suwon Cube Championship 2008: 14.55Seoul Cube Championship 2008: 13.47Korea Cube Championship 2009: 12.63Korea Cube Championship 2010: 12.18Korean Championship 2011: 9.93World Rubik's Cube Championship 2011: 9.80Cubing Korea Xmas Eve 2011: 9.25Cubing Korea December 2011: 9.46Cubing Korea New Years 2012: 8.77Cubing Korea January 2012: 9.63United States National Championships 2012: 8.55Korean Style 2013: 8.22World Rubik's Cube Championship 2013: 8.49Korean Winter 2013: 8.18Korea New Year 2014: 7.76Frankfurt Cube Days 2014: 8.31Valencia Open 2014: 7.41Grenoble Winter Open 2014: 8.63Nottingham Open 2014: 7.27Busan Summer 2014: 8.19Thanks Cubing Day 2014: 7.32Asian Championship 2014: 8.53Korean Christmas Cup 2014: 9.68KAIST Fall 2014: 7.66Happy Sheep Year 2015: 8.12Winter Cube Anniversary 2015: 8.25Spring Comes 2015: 9.18Good Cube Show Korea 2015: 8.22Cannes Open 2015: 7.97TCG & Friends Arequipa 2015: 7.81TCG & Friends 2015: 8.67World Rubik's Cube Championship 2015: 8.61Hector Salinas Open 2015: 9.26San Lorenzo Invierno 2015: 9.54August Bank Holiday Competition 2015: 7.87German Nationals 2015: 6.88Masovian Open 2015: 8.43Prague Open 2015: 8.56Valentine in Daegu 2016: 9.19Jeonju Spring 2016: 8.00Cube Is Good 2016: 7.33European Rubik's Cube Championship 2016: 7.96Czech Open 2016: 7.91Melrose Summer 2016: 8.04US Nationals 2016: 7.26Korean Championship 2016: 8.05Busan Winter 2016: 8.153x3x3 HanMaDang 2017: 8.39KAIST Spring 2017: 7.43Play Cube 2017: 7.55CWR Fall 2017: 9.55Jeju Open 2017: 7.84CWR Winter 2018: 8.81Korean Championship 2018: 8.25CWR Fall 2018: 8.06Cutory Autumn Open 2018: 7.99Busan Winter 2018: 8.49Korea Winter 2019: 6.32Seoul Winter 2019: 8.46Cutory Blossom 2019: 9.68Lincoln Open 2019: 8.05Hessen Open 2019: 7.87Cubing Operating System Summer 2019: 8.45Warm Up Sydney 2019: 7.90WCA World Championship 2019: 6.64Korean Championship 2019: 6.05Korean Spring 2022: 9.20Seoul Summer 2022: 10.32Korean Championship 2022: 9.986.0514.9427 Jul 200812 Aug 2022

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 0.05 away.
  • A sub-40 5×5 single — 68 people have one; it is 6.99 away.

Targets move as he improves.