Haichuan Du (杜海川)
Nanjing Spring 2015
WCA ID: 2011DUHA01
Country: China 
Active since: 2011
6
Events Entered46
Official Solves4
Best Position (3x3x3 Cube)3x3x3 Cube
Best Event11.67s
Best Result (3x3x3 Cube)7
PBs AchievedEvents
3x3x3 Cube
2x2x2 Cube
4x4x4 Cube
5x5x5 Cube
7x7x7 Cube
3x3x3 Fewest Moves
3x3x3 One-Handed
Clock
Pyraminx
3x3x3 With Feet
Competitions
Lishui Open 2025
Kewbz UK Championship 2022
Kunshan Afternoon 2021
Guildford Open 2020
Wuxi Autumn 2018
Shanghai Winter 2018
Zhenjiang Open 2017
Nanjing Autumn 2017
Yangzhou Open 2017
Wuxi Open 2017
China Championship 2017
ZUST Open 2017
Hefei Open 2016
Suzhou Open 2016
Shanghai Songjiang Open 2016
Shanghai Spring 2016
China Championship 2015
Shanghai Summer Open 2015
Wuxi Open 2015
Hefei Open 2015
Nanjing Spring 2015
Shanghai Fudan Spring 2015
Cube Elite Union Cafe 2014
Nantong Open 2014
Suzhou Open 2014
Shanghai Spring 2014
Shanghai Summer 2013
Shanghai Maritime Open 2013
Shanghai Summer 2012
Shanghai Snowball Winter 2011
Competition Event Summary
| Event | Round Reached | Single | Average | Position |
|---|---|---|---|---|
| 3x3x3 Cube | Second round | 12.37s | 13.29s | #12 |
| 2x2x2 Cube | Second round | 1.55s | 5.05s | #15 |
| 4x4x4 Cube | First round | 45.80s | 55.09s | #17 |
| 5x5x5 Cube | First round | 2:02.15 | — | #23 |
| 3x3x3 One-Handed | Second round | 18.71s | 23.15s | #15 |
| Pyraminx | Second round | 5.57s | 9.56s | #24 |
Event Ranking Chart
Competition Round Breakdown
3x3x3 Cube
| Round | # | Best | Average | Solves | ||||
|---|---|---|---|---|---|---|---|---|
| Second round | #12 | 12.37s | 13.29s | (16.04s) | 13.16s | 13.64s | 13.06s | (12.37s) |
| First round | #4 | 10.38s | 11.67s | (14.52s) | 11.32s | (10.38s) | 12.30s | 11.39s |
2x2x2 Cube
| Round | # | Best | Average | Solves | ||||
|---|---|---|---|---|---|---|---|---|
| Second round | #15 | 1.55s | 5.05s | (1.55s) | (6.20s) | 5.66s | 3.36s | 6.12s |
| First round | #5 | 3.01s | 3.84s | 4.34s | 3.53s | (6.59s) | (3.01s) | 3.64s |
4x4x4 Cube
| Round | # | Best | Average | Solves | ||||
|---|---|---|---|---|---|---|---|---|
| First round | #17 | 45.80s | 55.09s | 56.99s | 53.68s | (1:08.06) | (45.80s) | 54.59s |
5x5x5 Cube
| Round | # | Best | Average | Solves | ||||
|---|---|---|---|---|---|---|---|---|
| First round | #23 | 2:02.15 | — | DNF | 2:02.15 | — | — | — |
3x3x3 One-Handed
| Round | # | Best | Average | Solves | ||||
|---|---|---|---|---|---|---|---|---|
| Second round | #15 | 18.71s | 23.15s | 20.69s | (18.71s) | 26.88s | 21.87s | (27.51s) |
| First round | #8 | 17.15s | 20.91s | 21.66s | 20.68s | (17.15s) | 20.38s | (22.45s) |
Pyraminx
| Round | # | Best | Average | Solves | ||||
|---|---|---|---|---|---|---|---|---|
| Second round | #24 | 5.57s | 9.56s | 9.51s | 9.83s | (5.57s) | 9.35s | (12.22s) |
| First round | #13 | 5.47s | 7.45s | 7.80s | (5.47s) | 7.03s | (8.71s) | 7.52s |
PBs Achieved
| Event | Type | Previous PB | New PB | Improvement |
|---|---|---|---|---|
| 2x2x2 Cube | Single | 1.75s | 1.55s | -0.20s |
| 3x3x3 One-Handed | Average | 23.17s | 20.91s | -2.26s |
| 3x3x3 One-Handed | Single | 17.57s | 17.15s | -0.42s |
| 4x4x4 Cube | Average | 55.24s | 55.09s | -0.15s |
| 4x4x4 Cube | Single | 49.63s | 45.80s | -3.83s |
| 5x5x5 Cube | Single | 2:33.25 | 2:02.15 | -31.10s |
| Pyraminx | Average | 7.79s | 7.45s | -0.34s |
✉️
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