Zhou Zi Kai (周子凱)
Region | WCA ID | Gender | Competitions | Completed Solves |
|---|---|---|---|---|
| Hong Kong, China | 2023KAIZ01 | Male | 18 | 477 |
Current Personal Records
| Event | NR | CR | WR | Single | Average | WR | CR | NR | |
|---|---|---|---|---|---|---|---|---|---|
| 3x3x3 Cube | 40 | 1795 | 5451 | 7.84 | 10.14 | 7105 | 2549 | 54 | |
| 2x2x2 Cube | 42 | 1571 | 6825 | 1.98 | 3.64 | 7994 | 2100 | 60 | |
| 4x4x4 Cube | 94 | 4144 | 11857 | 44.31 | 52.94 | 13624 | 4852 | 109 | |
| 5x5x5 Cube | 96 | 4860 | 15487 | 1:53.09 | 2:15.03 | 16716 | 5093 | 93 | |
| 3x3x3 Fewest Moves | 55 | 2052 | 7570 | 47 | |||||
| 3x3x3 One-Handed | 100 | 4713 | 12688 | 20.03 | 22.80 | 9877 | 3784 | 77 | |
| Clock | 76 | 3259 | 14033 | 17.54 | 28.36 | 16241 | 3675 | 78 | |
| Megaminx | 83 | 3774 | 14671 | 2:08.48 | 2:36.62 | 14450 | 3695 | 71 | |
| Pyraminx | 12 | 543 | 2176 | 2.49 | 3.07 | 763 | 219 | 9 | |
| Skewb | 55 | 2786 | 10750 | 4.94 | 7.36 | 8948 | 2508 | 55 |
| 3x3x3 Cube | |||||||||||
| Chengdu Spring Open 2025 | Second round | 77 | 7.84 | 10.54 | 10.32 | 11.74 | 7.84 | 11.02 | 10.28 | ||
| First round | 61 | 9.04 | 10.14 | 9.76 | 9.04 | 11.33 | 9.32 | 13.83 | |||
| Hangzhou Open 2024 | First round | 106 | 8.05 | 11.85 | DNF | 8.05 | 11.94 | 12.49 | 11.13 | ||
| Shenzhen Open 2024 | Second round | 87 | 8.13 | 11.78 | 10.35 | 8.13 | 11.56 | 13.42 | 14.92 | ||
| First round | 80 | 8.88 | 11.46 | 10.43 | 12.25 | 12.62 | 8.88 | 11.69 | |||
| Hong Kong Championship 2024 | Second round | 26 | 8.76 | 10.15 | 9.60 | 8.76 | 10.80 | 10.04 | 11.16 | ||
| First round | 33 | 8.66 | 10.69 | 13.64 | 9.84 | 11.86 | 8.66 | 10.38 | |||
| Hong Kong Cube Day 2024 | First round | 50 | 9.96 | 12.11 | 12.86 | 10.72 | 12.76 | 9.96 | DNF | ||
| Rubik's WCA North American Championship 2024 | Second round | 334 | 9.99 | 11.55 | 12.35 | 11.10 | 11.53 | 12.03 | 9.99 | ||
| First round | 338 | 9.25 | 11.32 | 11.62 | 13.38 | 10.47 | 11.88 | 9.25 | |||
| Minnesota Warm Up 2024 | Second round | 35 | 10.96 | 13.40 | 12.81 | 15.81 | 14.31 | 13.09 | 10.96 | ||
| First round | 27 | 9.08 | 11.79 | 11.24 | 9.08 | DNF | 12.66 | 11.46 | |||
| Shenzhen Nanshan Open 2024 | Second round | 67 | 9.36 | 11.03 | 13.15 | 11.13 | 12.25 | 9.36 | 9.71 | ||
| First round | 103 | 11.47 | 12.39 | 12.86 | 16.06 | 11.47 | 12.31 | 11.99 | |||
| Welcome Back Hong Kong 2024 | First round | 41 | 10.49 | 12.01 | 12.29 | 11.50 | 12.25 | 13.49 | 10.49 | ||
| Xuzhou Open 2024 | First round | 111 | 11.86 | 13.66 | 14.79 | 11.86 | 12.92 | 13.28 | 14.83 | ||
| Cubing Battle of Katipunan 2024 | Second round | 26 | 9.33 | 11.95 | 18.47 | 10.06 | 9.33 | 13.16 | 12.64 | ||
| First round | 27 | 11.14 | 12.32 | 11.14 | 12.28 | 12.04 | 12.63 | 21.56 | |||
| Hong Kong Championship 2023 | First round | 89 | 14.30 | 15.85 | 15.12 | 14.65 | 19.42 | 14.30 | 17.78 | ||
| Chemung Cubing 2023 | Second round | 20 | 13.25 | 17.23 | 13.25 | 15.61 | 22.05 | 16.01 | 20.07 | ||
| First round | 25 | 14.25 | 20.21 | 19.95 | 14.25 | 22.57 | 18.95 | 21.74 | |||
| Taiwan Cubing Challenge 2023 | Second round | 143 | 21.06 | 23.07 | 25.73 | 24.27 | 21.06 | 21.32 | 23.62 | ||
| First round | 139 | 18.28 | 21.30 | 25.06 | 20.84 | 19.99 | 18.28 | 23.08 | |||
| Hong Kong Small Cube Day 2023 | First round | 178 | 24.68 | 26.92 | 26.78 | 29.56 | 27.30 | 26.68 | 24.68 | ||
| 2x2x2 Cube | |||||||||||
| Chengdu Spring Open 2025 | Second round | 42 | 2.27 | 4.10 | DNF | 4.09 | 4.02 | 2.27 | 4.19 | ||
| First round | 37 | 3.63 | 3.98 | 4.28 | 4.06 | 3.63 | 3.92 | 3.97 | |||
| Hangzhou Open 2024 | Second round | 37 | 3.08 | 3.73 | 3.33 | 3.08 | 3.89 | 4.93 | 3.98 | ||
| First round | 41 | 3.55 | 3.90 | 4.00 | 6.36 | 3.55 | 3.95 | 3.75 | |||
| Shenzhen Open 2024 | First round | 40 | 2.97 | 4.01 | 4.46 | 4.31 | 2.97 | 3.69 | 4.03 | ||
| Hong Kong Championship 2024 | Second round | 23 | 3.28 | 3.88 | 3.63 | 3.28 | 13.59 | 3.87 | 4.15 | ||
| First round | 34 | 3.22 | 3.85 | 3.82 | 3.54 | 3.22 | 4.45 | 4.20 | |||
| Rubik's WCA Asian Championship 2024 | Second round | 108 | 2.03 | 4.41 | 5.17 | 5.03 | 2.03 | 4.81 | 3.40 | ||
| First round | 118 | 3.13 | 3.64 | 3.94 | 4.05 | 3.13 | 3.42 | 3.57 | |||
| Hong Kong Cube Day 2024 | First round | 30 | 3.06 | 4.30 | 6.45 | 4.59 | 3.95 | 4.35 | 3.06 | ||
| Rubik's WCA North American Championship 2024 | Second round | 332 | 3.82 | 4.42 | 5.22 | 4.00 | 4.22 | 5.04 | 3.82 | ||
| First round | 242 | 1.98 | 3.65 | 4.02 | 4.77 | 4.43 | 2.49 | 1.98 | |||
| Minnesota Warm Up 2024 | Second round | 23 | 2.97 | 3.83 | 2.97 | 3.46 | 3.99 | 6.28 | 4.05 | ||
| First round | 38 | 3.79 | 4.77 | 4.73 | 3.79 | 4.59 | 5.32 | 4.99 | |||
| Shenzhen Nanshan Open 2024 | First round | 44 | 3.58 | 4.48 | 6.53 | 4.98 | 4.24 | 4.22 | 3.58 | ||
| Welcome Back Hong Kong 2024 | First round | 36 | 4.01 | 4.72 | 4.01 | 5.23 | 4.21 | 4.71 | 6.29 | ||
| Xuzhou Open 2024 | First round | 73 | 3.97 | 5.24 | 5.47 | 5.75 | 3.97 | 4.49 | 6.01 | ||
| Cubing Battle of Katipunan 2024 | Final | 20 | 4.45 | 5.41 | 6.51 | 4.45 | 5.20 | 7.54 | 4.52 | ||
| Hong Kong Championship 2023 | First round | 63 | 4.53 | 5.32 | 4.53 | 5.15 | 6.31 | 4.73 | 6.07 | ||
| Chemung Cubing 2023 | Second round | 23 | 4.61 | 7.02 | 4.61 | 7.59 | 6.46 | 8.44 | 7.00 | ||
| First round | 25 | 5.00 | 7.61 | 8.03 | 5.68 | 9.95 | 9.12 | 5.00 | |||
| Taiwan Cubing Challenge 2023 | First round | 111 | 4.41 | 7.72 | 8.20 | 8.46 | 6.49 | 8.72 | 4.41 | ||
| Hong Kong Small Cube Day 2023 | First round | 122 | 5.23 | 7.86 | 7.64 | 6.47 | 10.11 | 5.23 | 9.47 | ||
| 4x4x4 Cube | |||||||||||
| Chengdu Spring Open 2025 | First round | 96 | 44.31 | 53.14 | 54.34 | 52.71 | 52.37 | 56.56 | 44.31 | ||
| Hangzhou Open 2024 | First round | 74 | 45.92 | 54.98 | 52.88 | 50.36 | 1:17.13 | 45.92 | 1:01.69 | ||
| Shenzhen Open 2024 | First round | 84 | 46.94 | 52.94 | 46.94 | 55.92 | 1:01.33 | 53.65 | 49.26 | ||
| Hong Kong Championship 2024 | First round | 51 | 1:02.94 | 1:16.03 | 1:02.94 | ||||||
| Hong Kong Cube Day 2024 | First round | 44 | 54.89 | 54.89 | 1:20.10 | ||||||
| Minnesota Warm Up 2024 | Final | 38 | 50.11 | 1:00.43 | 1:04.50 | 50.11 | 1:18.12 | 1:00.80 | 55.99 | ||
| Shenzhen Nanshan Open 2024 | First round | 93 | 1:01.61 | DNF | 1:01.61 | ||||||
| Welcome Back Hong Kong 2024 | First round | 70 | 1:07.95 | 1:08.96 | 1:07.95 | ||||||
| Hong Kong Championship 2023 | First round | 49 | 1:17.25 | 1:18.21 | 1:17.25 | ||||||
| 5x5x5 Cube | |||||||||||
| Chengdu Spring Open 2025 | First round | 86 | 2:09.14 | 2:09.14 | 2:14.95 | ||||||
| Hong Kong Championship 2024 | First round | 31 | 1:53.09 | 1:56.47 | 1:53.09 | ||||||
| Minnesota Warm Up 2024 | Final | 30 | 1:59.29 | 2:15.03 | 2:58.87 | 1:59.29 | 2:15.86 | 2:06.61 | 2:22.62 | ||
| Cubing Battle of Katipunan 2024 | Final | 24 | 2:07.24 | 2:07.24 | 2:11.97 | ||||||
| 6x6x6 Cube | |||||||||||
| Minnesota Warm Up 2024 | Final | 28 | DNF | DNF | |||||||
| 7x7x7 Cube | |||||||||||
| Minnesota Warm Up 2024 | Final | 30 | DNF | DNF | |||||||
| 3x3x3 Blindfolded | |||||||||||
| Hong Kong Championship 2024 | First round | 11 | DNF | DNF | DNF | DNF | DNF | ||||
| Hong Kong Blind Legends 2024 | First round | 30 | DNF | DNF | DNF | DNF | DNF | ||||
| Minnesota Warm Up 2024 | Final | 17 | DNF | DNF | DNF | DNF | DNF | ||||
| Chemung Cubing 2023 | Final | 3 | DNF | DNF | DNF | DNF | DNF | ||||
| 3x3x3 Fewest Moves | |||||||||||
| FMC Cubing China 2024 | Final | 117 | 47 | DNF | DNF | DNF | 47 | ||||
| 3x3x3 One-Handed | |||||||||||
| Chengdu Spring Open 2025 | First round | 76 | 21.93 | 25.65 | 26.70 | 22.68 | 27.56 | 30.22 | 21.93 | ||
| Shenzhen Open 2024 | First round | 86 | 20.75 | 29.35 | 42.60 | 20.75 | 26.11 | 31.22 | 30.73 | ||
| Hong Kong Championship 2024 | First round | 35 | 24.84 | 26.98 | 31.89 | 24.84 | 25.68 | 28.29 | 26.97 | ||
| Rubik's WCA Asian Championship 2024 | First round | 215 | 20.03 | 25.94 | DNF | 20.03 | 25.00 | 30.83 | 21.99 | ||
| Hong Kong Cube Day 2024 | First round | 37 | 21.12 | 23.91 | 21.12 | 28.59 | 23.90 | 25.10 | 22.74 | ||
| Rubik's WCA North American Championship 2024 | First round | 394 | 23.90 | 26.25 | 29.24 | 24.19 | 30.50 | 23.90 | 25.31 | ||
| Minnesota Warm Up 2024 | Final | 23 | 22.10 | 22.80 | 22.90 | 22.10 | 22.76 | 23.91 | 22.74 | ||
| Shenzhen Nanshan Open 2024 | First round | 73 | 23.64 | 24.83 | 25.96 | 24.57 | 23.64 | 27.67 | 23.95 | ||
| Welcome Back Hong Kong 2024 | First round | 44 | 22.28 | 26.62 | 37.66 | 27.96 | 26.21 | 25.70 | 22.28 | ||
| Xuzhou Open 2024 | First round | 72 | 26.02 | 26.99 | 26.02 | ||||||
| Hong Kong Championship 2023 | First round | 43 | 22.85 | 30.33 | 22.85 | 28.73 | 35.94 | 33.72 | 28.54 | ||
| Chemung Cubing 2023 | Final | 16 | 34.56 | 50.17 | 34.56 | DNF | 37.28 | 45.42 | 1:07.81 | ||
| First round | 16 | 28.04 | 38.19 | 37.78 | 40.20 | 28.04 | 36.58 | 41.07 | |||
| Clock | |||||||||||
| Chengdu Spring Open 2025 | First round | 63 | 17.54 | 19.26 | 17.54 | ||||||
| Minnesota Warm Up 2024 | First round | 43 | 26.68 | 28.36 | 27.69 | 28.07 | 44.76 | 29.33 | 26.68 | ||
| Welcome Back Hong Kong 2024 | First round | 49 | 22.47 | DNF | 24.34 | 24.51 | 22.47 | DNF | DNF | ||
| Megaminx | |||||||||||
| Chengdu Spring Open 2025 | First round | 47 | 2:23.09 | 2:23.09 | DNF | ||||||
| Minnesota Warm Up 2024 | Final | 34 | 2:08.48 | 2:36.62 | 2:13.71 | 3:10.24 | 2:08.48 | DNF | 2:25.91 | ||
| Cubing Battle of Katipunan 2024 | First round | 21 | 2:43.07 | 3:28.97 | 2:43.07 | ||||||
| Pyraminx | |||||||||||
| Chengdu Spring Open 2025 | Final | 15 | 2.84 | 4.28 | 4.00 | 4.61 | 4.78 | 4.22 | 2.84 | ||
| First round | 11 | 2.90 | 3.31 | 2.90 | 3.16 | 4.89 | 3.63 | 3.13 | |||
| Hangzhou Open 2024 | First round | 23 | 2.61 | 3.74 | 5.05 | 3.42 | 4.70 | 2.61 | 3.11 | ||
| Shenzhen Open 2024 | Final | 9 | 2.86 | 4.07 | 2.86 | 4.28 | 3.21 | 4.71 | DNF | ||
| First round | 6 | 2.55 | 3.14 | 2.92 | 3.38 | 3.88 | 3.13 | 2.55 | |||
| Hong Kong Championship 2024 | Final | 5 | 2.64 | 3.60 | 3.96 | 2.64 | 4.40 | 3.87 | 2.97 | ||
| First round | 6 | 2.81 | 3.83 | 9.58 | 4.28 | 2.81 | 3.58 | 3.62 | |||
| Rubik's WCA Asian Championship 2024 | Second round | 65 | 2.65 | 4.40 | 4.57 | 5.04 | 6.93 | 3.58 | 2.65 | ||
| First round | 28 | 2.49 | 3.07 | 3.93 | 3.06 | 2.49 | 2.90 | 3.26 | |||
| Hong Kong Cube Day 2024 | First round | 19 | 4.01 | 6.75 | 6.10 | 7.21 | 6.94 | DNF | 4.01 | ||
| Rubik's WCA North American Championship 2024 | First round | 349 | 6.50 | 7.89 | 6.50 | 6.51 | 9.72 | 8.14 | 9.02 | ||
| Minnesota Warm Up 2024 | First round | 26 | 5.56 | 7.70 | 6.39 | 8.35 | 5.56 | 11.57 | 8.35 | ||
| Xuzhou Open 2024 | First round | 52 | 6.12 | 8.44 | 8.92 | 10.55 | 6.81 | 9.58 | 6.12 | ||
| Cubing Battle of Katipunan 2024 | Final | 14 | 5.50 | 8.62 | 5.50 | 7.10 | 12.11 | 10.14 | 8.63 | ||
| Hong Kong Championship 2023 | First round | 26 | 6.58 | 8.02 | 9.42 | 6.80 | 10.38 | 6.58 | 7.83 | ||
| Chemung Cubing 2023 | First round | 29 | 11.66 | 15.92 | 21.48 | 14.36 | 11.66 | 19.76 | 13.63 | ||
| Skewb | |||||||||||
| Chengdu Spring Open 2025 | First round | 59 | 4.94 | 10.16 | 4.94 | 9.28 | 15.85 | 12.88 | 8.32 | ||
| Hangzhou Open 2024 | First round | 49 | 5.60 | 7.36 | 5.60 | 8.14 | 21.27 | 7.91 | 6.03 | ||
| Hong Kong Championship 2024 | First round | 20 | 6.93 | 8.07 | 6.93 | 7.80 | 7.46 | 8.94 | 16.93 | ||
| Rubik's WCA Asian Championship 2024 | First round | 207 | 5.85 | 9.00 | 10.42 | 5.85 | 13.16 | 8.64 | 7.93 | ||
| Rubik's WCA North American Championship 2024 | First round | 401 | 5.61 | 9.26 | 6.04 | 5.61 | 12.02 | 11.28 | 10.46 | ||
| Minnesota Warm Up 2024 | First round | 39 | 9.66 | 10.16 | 10.69 | 9.87 | 13.47 | 9.93 | 9.66 | ||
| Shenzhen Nanshan Open 2024 | First round | 49 | 8.68 | 9.75 | 9.22 | 10.81 | 11.51 | 9.22 | 8.68 | ||
| Welcome Back Hong Kong 2024 | First round | 44 | 11.93 | 12.59 | 12.53 | 12.61 | 12.62 | 13.49 | 11.93 | ||
| Hong Kong Championship 2023 | First round | 38 | 7.32 | 12.47 | 10.12 | 7.32 | 13.46 | 15.68 | 13.82 | ||
| Chemung Cubing 2023 | First round | 19 | 11.59 | 17.96 | 21.52 | 17.02 | 16.93 | 11.59 | 19.92 | ||
National Championship Podiums
| Event | Place | Single | Average | Solves | ||||
|---|---|---|---|---|---|---|---|---|
| Hong Kong Championship 2024 | ||||||||
| Pyraminx | 3 | 2.64 | 3.60 | 3.96 | 2.64 | 4.40 | 3.87 | 2.97 |
