Justin Chang

WCA ID Region Gender Competitions Gold Silver Bronze
2018CHAN28  China Male 12 0 0 0

Event NR CR WR Single Average WR CR NR Gold Silver Bronze
 Rubik's Cube 1191 2914 7580 10.12 12.96 9818 3982 1685
 2x2x2 Cube 1079 2761 9028 2.84 4.65 9357 3024 1209
 4x4x4 Cube 807 1826 4585 41.76 47.64 4391 1787 784
 5x5x5 Cube 1390 3311 9081 1:56.59 2:13.06 9315 3352 1390
 3x3x3 One-Handed 1550 3492 8392 21.38 26.63 8720 3752 1689
 Megaminx 963 2364 7512 2:10.19 2:29.78 7219 2294 914
 Pyraminx 899 2127 6571 4.91 6.64 4208 1444 634
 Skewb 1914 4793 15908 9.01 13.20 15494 4819 1941
  Rubik's Cube
Competition Round Place Best Average Result Details
 Altona Algorithms Attempt 2 2021 Second round 30 11.72   13.15   12.64 13.91 13.22 11.72 13.58
First round 39 11.85   14.19   12.79 15.09 19.84 11.85 14.68
 Melbourne Summer 2021 Semi Final 39 12.14   13.66   12.14 14.27 14.35 14.08 12.64
Second round 39 10.12   12.96   13.95 10.12 12.41 12.52 DNF
First round 38 12.03   13.18   14.22 13.29 13.12 12.03 13.14
 Melbourne Cube Days 2019 Semi Final 24 12.64   13.62   13.50 19.27 14.22 13.13 12.64
Second round 35 11.08   15.43   16.06 11.08 13.55 22.00 16.68
First round 31 13.18   14.47   14.63 16.10 13.20 13.18 15.57
 Altona Algorithms 2019 First round 43 12.72   14.81   14.05 12.72 16.33 14.31 16.08
 WCA World Championship 2019 First round 365 10.89   13.13   12.01 17.67 12.40 10.89 14.98
 Koalafication Melbourne 2019 Second round 40 10.21   14.56   13.06 10.21 15.27 15.34 19.41
First round 49 12.55   15.42   16.12 15.79 12.55 14.36 18.89
 Cube for Cambodia 2019 Second round 20 14.26   14.69   15.62 14.26 14.70 14.26 15.12
First round 20 12.73   14.56   15.70 DNF 14.02 12.73 13.97
 Melbourne Summer 2019 Second round 33 13.61   14.95   16.49 13.61 16.22 14.85 13.79
First round 38 14.12   16.54   15.71 17.74 14.12 17.17 16.75
 Melbourne Cube Days 2018 Second round 37 16.87   17.94   16.87 17.79 19.75 17.55 18.48
First round 34 14.70   15.88   17.24 14.70 15.21 16.17 16.26
 St Kevin's College Spring 2018 First round 36 14.25   15.62   16.61 14.25 17.36 14.82 15.44
 Australian Nationals 2018 Second round 81 14.90   16.91   15.40 17.66 17.66 14.90 19.67
First round 57 12.89   14.29   12.89 13.84 15.47 15.53 13.55
 Beijing Open 2018 First round 263 24.16   27.90   24.80 26.18 32.73 24.16 34.15
  2x2x2 Cube
Competition Round Place Best Average Result Details
 Altona Algorithms Attempt 2 2021 Second round 46 3.30   5.20   4.41 7.76 3.30 5.52 5.67
First round 82 3.76   6.41   8.01 3.76 7.40 9.78 3.82
 Melbourne Summer 2021 Second round 83 5.49   7.05   7.68 6.94 6.77 5.49 7.43
First round 47 4.36   5.30   4.39 6.87 4.36 6.41 5.10
 Melbourne Cube Days 2019 First round 81 2.84   7.04   8.80 7.68 2.84 6.44 7.00
 WCA World Championship 2019 Combined First round 285 3.97   4.93   3.97 5.27 DNF 5.31 4.22
 Koalafication Melbourne 2019 Second round 70 4.40   6.73   4.40 8.48 9.39 4.93 6.79
First round 38 3.23   4.65   3.23 5.13 4.57 4.25 6.87
 Cube for Cambodia 2019 First round 28 4.42   6.02   5.52 5.64 4.42 13.29 6.89
 Melbourne Summer 2019 First round 52 4.10   6.43   6.48 5.60 7.22 4.10 11.80
 Melbourne Cube Days 2018 Second round 46 4.46   6.87   6.35 4.46 9.10 10.95 5.16
First round 49 4.56   6.84   10.24 4.59 4.56 12.91 5.68
 Australian Nationals 2018 First round 117 4.27   7.85   10.75 4.27 8.26 8.59 6.71
  4x4x4 Cube
Competition Round Place Best Average Result Details
 Altona Algorithms Attempt 2 2021 Combined First round 26 47.67   51.74   53.93 50.46 47.67 50.83 54.90
 Melbourne Summer 2021 Second round 23 42.09   53.34   52.10 42.09 1:02.24 55.62 52.30
Combined First round 22 41.76   47.64   59.61 55.47 41.76 42.10 45.36
 Melbourne Cube Days 2019 Combined First round 52 50.18   DNF   51.91 DNF 55.97 DNF 50.18
 Altona Algorithms 2019 Combined First round 23 50.10   51.48   52.00 50.10 51.38 51.07 53.98
 WCA World Championship 2019 First round 376 46.56   1:02.96   DNF 1:19.63 46.56 51.29 57.95
 Koalafication Melbourne 2019 Combined First round 43 55.52   1:01.89   55.52 1:01.27 1:08.52 55.88 1:12.52
 Cube for Cambodia 2019 Combined Final 19 49.92   56.85   57.16 1:04.85 49.92 56.87 56.53
 Melbourne Summer 2019 Combined First round 42 47.04   DNF   1:11.85 47.04 DNF 54.12 DNF
 Melbourne Cube Days 2018 Second round 29 47.75   1:00.09   1:05.07 57.74 1:06.33 57.45 47.75
Combined First round 30 49.50   1:01.23   1:12.09 58.86 59.07 1:05.76 49.50
 St Kevin's College Spring 2018 Combined Final 34 1:00.95   1:06.47   1:07.33 1:11.42 1:02.14 1:09.93 1:00.95
 Australian Nationals 2018 Combined First round 74 58.62   1:10.59   1:08.95 1:15.59 1:17.89 1:07.23 58.62
  5x5x5 Cube
Competition Round Place Best Average Result Details
 Melbourne Summer 2021 Combined First round 41 2:00.85     2:00.85 2:14.08
 Melbourne Cube Days 2019 Combined First round 30 1:56.59     2:01.24 1:56.59
 Koalafication Melbourne 2019 Combined First round 42 2:09.13     2:09.13 2:26.23
 Cube for Cambodia 2019 Combined Final 20 1:56.90   2:13.06   2:07.91 1:56.90 2:15.39 2:15.89 2:38.18
 Melbourne Summer 2019 Combined First round 32 2:09.91     2:09.91 2:22.10
 Melbourne Cube Days 2018 Combined First round 34 2:06.59   2:24.80   2:17.91 2:32.17 2:06.59 2:27.66 2:28.83
  3x3x3 One-Handed
Competition Round Place Best Average Result Details
 Altona Algorithms Attempt 2 2021 Combined First round 32 24.36   29.69   24.36 29.84 37.40 28.77 30.45
 Melbourne Summer 2021 Combined First round 32 22.13   26.63   24.80 22.13 27.59 28.59 27.50
 Melbourne Cube Days 2019 Second round 33 21.67   32.12   26.66 42.75 38.16 31.53 21.67
Combined First round 34 22.87   31.97   28.97 34.81 37.80 22.87 32.13
 Altona Algorithms 2019 Combined First round 37 24.22   27.91   24.69 32.62 29.84 29.20 24.22
 WCA World Championship 2019 First round 303 21.40   31.15   40.74 21.40 29.10 39.89 24.46
 Cube for Cambodia 2019 Combined First round 20 26.63   29.28   26.63 27.65 28.14 35.14 32.05
 Melbourne Summer 2019 Second round 32 22.46   31.22   22.46 28.15 27.06 38.46 DNF
Combined First round 28 21.38   27.90   24.05 31.34 21.38 28.31 37.60
 Melbourne Cube Days 2018 Combined First round 42 32.19   47.18   32.19 45.86 43.61 1:01.22 52.06
  Megaminx
Competition Round Place Best Average Result Details
 Koalafication Melbourne 2019 Combined Final 37 2:30.25     3:14.52 2:30.25
 Cube for Cambodia 2019 Combined Final 16 2:17.17     2:34.18 2:17.17
 Melbourne Summer 2019 Combined First round 28 2:10.19     2:10.19 2:37.09
 St Kevin's College Spring 2018 Combined Final 26 2:19.90     2:19.90 2:43.96
 Australian Nationals 2018 Combined Final 48 2:17.21   2:29.78   2:26.80 2:43.08 2:39.54 2:23.00 2:17.21
  Pyraminx
Competition Round Place Best Average Result Details
 Altona Algorithms Attempt 2 2021 First round 30 5.61   8.43   10.36 5.61 6.59 9.43 9.27
 Melbourne Summer 2021 First round 20 6.14   7.72   8.07 6.14 7.54 16.22 7.55
 Altona Algorithms 2019 First round 40 5.73   9.00   11.18 9.46 5.73 9.45 8.10
 WCA World Championship 2019 Combined First round 182 5.99   7.60   5.99 11.62 7.85 8.87 6.07
 Koalafication Melbourne 2019 First round 21 5.33   8.10   9.69 8.83 5.33 8.11 7.36
 Melbourne Summer 2019 Second round 15 4.91   6.64   7.47 6.24 13.32 6.21 4.91
First round 31 6.61   9.81   8.61 12.06 12.38 8.75 6.61
 St Kevin's College Spring 2018 Combined First round 32 7.85   10.45   7.85 8.19 11.05 12.11 17.83
 Australian Nationals 2018 Combined First round 78 8.90   12.06   11.88 8.90 10.05 14.78 14.25
  Skewb
Competition Round Place Best Average Result Details
 Altona Algorithms 2019 First round 67 9.01   13.20   9.01 10.16 12.24 17.19 18.59
 WCA World Championship 2019 Combined First round 336 16.46     16.69 16.46
 Melbourne Summer 2019 First round 71 23.78   27.08   23.78 28.85 26.35 26.05 31.10
  Altona Algorithms Attempt 2 2021   (2021-4-17~18)
Altona Algorithms Attempt 2 2021
Event Round Place Best Average Result Details
 Rubik's Cube Second round 30 11.72   13.15   12.64 13.91 13.22 11.72 13.58
First round 39 11.85   14.19   12.79 15.09 19.84 11.85 14.68
 2x2x2 Cube Second round 46 3.30   5.20   4.41 7.76 3.30 5.52 5.67
First round 82 3.76   6.41   8.01 3.76 7.40 9.78 3.82
 4x4x4 Cube Combined First round 26 47.67   51.74   53.93 50.46 47.67 50.83 54.90
 3x3x3 One-Handed Combined First round 32 24.36   29.69   24.36 29.84 37.40 28.77 30.45
 Pyraminx First round 30 5.61   8.43   10.36 5.61 6.59 9.43 9.27
  Melbourne Summer 2021   (2021-1-23~25)
Melbourne Summer 2021
Event Round Place Best Average Result Details
 Rubik's Cube Semi Final 39 12.14   13.66   12.14 14.27 14.35 14.08 12.64
Second round 39 10.12   12.96   13.95 10.12 12.41 12.52 DNF
First round 38 12.03   13.18   14.22 13.29 13.12 12.03 13.14
 2x2x2 Cube Second round 83 5.49   7.05   7.68 6.94 6.77 5.49 7.43
First round 47 4.36   5.30   4.39 6.87 4.36 6.41 5.10
 4x4x4 Cube Second round 23 42.09   53.34   52.10 42.09 1:02.24 55.62 52.30
Combined First round 22 41.76   47.64   59.61 55.47 41.76 42.10 45.36
 5x5x5 Cube Combined First round 41 2:00.85     2:00.85 2:14.08
 3x3x3 One-Handed Combined First round 32 22.13   26.63   24.80 22.13 27.59 28.59 27.50
 Pyraminx First round 20 6.14   7.72   8.07 6.14 7.54 16.22 7.55
  Melbourne Cube Days 2019   (2019-11-30~12-1)
Melbourne Cube Days 2019
Event Round Place Best Average Result Details
 Rubik's Cube Semi Final 24 12.64   13.62   13.50 19.27 14.22 13.13 12.64
Second round 35 11.08   15.43   16.06 11.08 13.55 22.00 16.68
First round 31 13.18   14.47   14.63 16.10 13.20 13.18 15.57
 2x2x2 Cube First round 81 2.84   7.04   8.80 7.68 2.84 6.44 7.00
 4x4x4 Cube Combined First round 52 50.18   DNF   51.91 DNF 55.97 DNF 50.18
 5x5x5 Cube Combined First round 30 1:56.59     2:01.24 1:56.59
 3x3x3 One-Handed Second round 33 21.67   32.12   26.66 42.75 38.16 31.53 21.67
Combined First round 34 22.87   31.97   28.97 34.81 37.80 22.87 32.13
  Altona Algorithms 2019   (2019-10-5~6)
Altona Algorithms 2019
Event Round Place Best Average Result Details
 Rubik's Cube First round 43 12.72   14.81   14.05 12.72 16.33 14.31 16.08
 4x4x4 Cube Combined First round 23 50.10   51.48   52.00 50.10 51.38 51.07 53.98
 3x3x3 One-Handed Combined First round 37 24.22   27.91   24.69 32.62 29.84 29.20 24.22
 Pyraminx First round 40 5.73   9.00   11.18 9.46 5.73 9.45 8.10
 Skewb First round 67 9.01   13.20   9.01 10.16 12.24 17.19 18.59
  WCA World Championship 2019   (2019-7-11~14)
WCA World Championship 2019
Event Round Place Best Average Result Details
 Rubik's Cube First round 365 10.89   13.13   12.01 17.67 12.40 10.89 14.98
 2x2x2 Cube Combined First round 285 3.97   4.93   3.97 5.27 DNF 5.31 4.22
 4x4x4 Cube First round 376 46.56   1:02.96   DNF 1:19.63 46.56 51.29 57.95
 3x3x3 One-Handed First round 303 21.40   31.15   40.74 21.40 29.10 39.89 24.46
 Pyraminx Combined First round 182 5.99   7.60   5.99 11.62 7.85 8.87 6.07
 Skewb Combined First round 336 16.46     16.69 16.46
  Koalafication Melbourne 2019   (2019-5-18~19)
Koalafication Melbourne 2019
Event Round Place Best Average Result Details
 Rubik's Cube Second round 40 10.21   14.56   13.06 10.21 15.27 15.34 19.41
First round 49 12.55   15.42   16.12 15.79 12.55 14.36 18.89
 2x2x2 Cube Second round 70 4.40   6.73   4.40 8.48 9.39 4.93 6.79
First round 38 3.23   4.65   3.23 5.13 4.57 4.25 6.87
 4x4x4 Cube Combined First round 43 55.52   1:01.89   55.52 1:01.27 1:08.52 55.88 1:12.52
 5x5x5 Cube Combined First round 42 2:09.13     2:09.13 2:26.23
 Megaminx Combined Final 37 2:30.25     3:14.52 2:30.25
 Pyraminx First round 21 5.33   8.10   9.69 8.83 5.33 8.11 7.36
  Cube for Cambodia 2019   (2019-4-28)
Cube for Cambodia 2019
Event Round Place Best Average Result Details
 Rubik's Cube Second round 20 14.26   14.69   15.62 14.26 14.70 14.26 15.12
First round 20 12.73   14.56   15.70 DNF 14.02 12.73 13.97
 2x2x2 Cube First round 28 4.42   6.02   5.52 5.64 4.42 13.29 6.89
 4x4x4 Cube Combined Final 19 49.92   56.85   57.16 1:04.85 49.92 56.87 56.53
 5x5x5 Cube Combined Final 20 1:56.90   2:13.06   2:07.91 1:56.90 2:15.39 2:15.89 2:38.18
 3x3x3 One-Handed Combined First round 20 26.63   29.28   26.63 27.65 28.14 35.14 32.05
 Megaminx Combined Final 16 2:17.17     2:34.18 2:17.17
  Melbourne Summer 2019   (2019-1-26~28)
Melbourne Summer 2019
Event Round Place Best Average Result Details
 Rubik's Cube Second round 33 13.61   14.95   16.49 13.61 16.22 14.85 13.79
First round 38 14.12   16.54   15.71 17.74 14.12 17.17 16.75
 2x2x2 Cube First round 52 4.10   6.43   6.48 5.60 7.22 4.10 11.80
 4x4x4 Cube Combined First round 42 47.04   DNF   1:11.85 47.04 DNF 54.12 DNF
 5x5x5 Cube Combined First round 32 2:09.91     2:09.91 2:22.10
 3x3x3 One-Handed Second round 32 22.46   31.22   22.46 28.15 27.06 38.46 DNF
Combined First round 28 21.38   27.90   24.05 31.34 21.38 28.31 37.60
 Megaminx Combined First round 28 2:10.19     2:10.19 2:37.09
 Pyraminx Second round 15 4.91   6.64   7.47 6.24 13.32 6.21 4.91
First round 31 6.61   9.81   8.61 12.06 12.38 8.75 6.61
 Skewb First round 71 23.78   27.08   23.78 28.85 26.35 26.05 31.10
  Melbourne Cube Days 2018   (2018-12-8~9)
Melbourne Cube Days 2018
Event Round Place Best Average Result Details
 Rubik's Cube Second round 37 16.87   17.94   16.87 17.79 19.75 17.55 18.48
First round 34 14.70   15.88   17.24 14.70 15.21 16.17 16.26
 2x2x2 Cube Second round 46 4.46   6.87   6.35 4.46 9.10 10.95 5.16
First round 49 4.56   6.84   10.24 4.59 4.56 12.91 5.68
 4x4x4 Cube Second round 29 47.75   1:00.09   1:05.07 57.74 1:06.33 57.45 47.75
Combined First round 30 49.50   1:01.23   1:12.09 58.86 59.07 1:05.76 49.50
 5x5x5 Cube Combined First round 34 2:06.59   2:24.80   2:17.91 2:32.17 2:06.59 2:27.66 2:28.83
 3x3x3 One-Handed Combined First round 42 32.19   47.18   32.19 45.86 43.61 1:01.22 52.06
  St Kevin's College Spring 2018   (2018-10-27)
St Kevin's College Spring 2018
Event Round Place Best Average Result Details
 Rubik's Cube First round 36 14.25   15.62   16.61 14.25 17.36 14.82 15.44
 4x4x4 Cube Combined Final 34 1:00.95   1:06.47   1:07.33 1:11.42 1:02.14 1:09.93 1:00.95
 Megaminx Combined Final 26 2:19.90     2:19.90 2:43.96
 Pyraminx Combined First round 32 7.85   10.45   7.85 8.19 11.05 12.11 17.83
  Australian Nationals 2018   (2018-10-6~7)
Australian Nationals 2018
Event Round Place Best Average Result Details
 Rubik's Cube Second round 81 14.90   16.91   15.40 17.66 17.66 14.90 19.67
First round 57 12.89   14.29   12.89 13.84 15.47 15.53 13.55
 2x2x2 Cube First round 117 4.27   7.85   10.75 4.27 8.26 8.59 6.71
 4x4x4 Cube Combined First round 74 58.62   1:10.59   1:08.95 1:15.59 1:17.89 1:07.23 58.62
 Megaminx Combined Final 48 2:17.21   2:29.78   2:26.80 2:43.08 2:39.54 2:23.00 2:17.21
 Pyraminx Combined First round 78 8.90   12.06   11.88 8.90 10.05 14.78 14.25
  Beijing Open 2018   (2018-4-30~5-1)
Beijing Open 2018
Event Round Place Best Average Result Details
 Rubik's Cube First round 263 24.16   27.90   24.80 26.18 32.73 24.16 34.15