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Bo-Sen Lai - 5D
 (NZGS ID: 000226) 
NZGS Rank #4
 
Achievements
2025 NZ Open - 2nd place
Auckland Open 2025 - 1st place
2025 Digital Open - 3rd place
 
 
Rating evolution
 
 
 
 
 
 
Results
 
 
 
 
 
 
 
2025 NZ Open (Rating before:2511.97, Rating after:2516.84)
 2025-11-22 - 2025-11-23, , 6 rounds 
 
 
 
 
Colour
 
Hd
 
Komi
 
Opponent
 
Opponent's strength
 
Opponent's score
 
Result
 
Var
 
 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Xiaoning(Nick) Zhuang 
 
 
3D 
 
 
0/4 
 
 
Win 
 
 
0.95 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Niu Liu 
 
 
3D 
 
 
3/6 
 
 
Win 
 
 
1.28 
 
 
 
 
 
White 
 
 
0 
 
 
 
 
 
Huiyi Shi 
 
 
4D 
 
 
4/6 
 
 
Win 
 
 
1.62 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Chahine Koleejan 
 
 
6D 
 
 
6/6 
 
 
Loss 
 
 
-3.66 
 
 
 
 
 
White 
 
 
0 
 
 
 
 
 
Amy Song 
 
 
5D 
 
 
4/6 
 
 
Win 
 
 
3.74 
 
 
 
 
 
White 
 
 
0 
 
 
 
 
 
Qixiang Zhang 
 
 
3D 
 
 
3/6 
 
 
Win 
 
 
0.94 
 
 
 
 
 
 
 
 
 
 
 
 
Auckland Open 2025 (Rating before:2499.45, Rating after:2511.97)
 2025-09-20 - 2025-09-20, , 6 rounds 
 
 
 
 
Colour
 
Hd
 
Komi
 
Opponent
 
Opponent's strength
 
Opponent's score
 
Result
 
Var
 
 
 
 
 
 
 
White 
 
 
0 
 
 
 
 
 
Huiyi Shi 
 
 
4D 
 
 
3/6 
 
 
Win 
 
 
2.57 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Kevin Liu 
 
 
2D 
 
 
4/6 
 
 
Win 
 
 
0.67 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Guohui Zhang 
 
 
4D? 
 
 
2/6 
 
 
Win 
 
 
3.18 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Lance Wen 
 
 
3D 
 
 
3/6 
 
 
Win 
 
 
1.65 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Zixiang(Jerry) Lei 
 
 
5D 
 
 
4.5/6 
 
 
Draw 
 
 
1.27 
 
 
 
 
 
White 
 
 
0 
 
 
 
 
 
Wei Liu 
 
 
4D? 
 
 
1/5 
 
 
Win 
 
 
3.18 
 
 
 
 
 
 
 
 
 
 
 
 
2025 Digital Open (Rating before:2500.00, Rating after:2499.45)
 2025-05-12 - 2025-06-23, , 6 rounds 
 
 
 
 
Colour
 
Hd
 
Komi
 
Opponent
 
Opponent's strength
 
Opponent's score
 
Result
 
Var
 
 
 
 
 
 
 
White 
 
 
0 
 
 
 
 
 
Amy Song 
 
 
5D 
 
 
3/6 
 
 
Win 
 
 
4.23 
 
 
 
 
 
White 
 
 
0 
 
 
 
 
 
Tianze Wang 
 
 
1K 
 
 
2/6 
 
 
Win 
 
 
0.20 
 
 
 
 
 
White 
 
 
0 
 
 
 
 
 
Huiyi Shi 
 
 
4D 
 
 
3/6 
 
 
Win 
 
 
1.84 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Vesper Lan 
 
 
3D? 
 
 
2/6 
 
 
Win 
 
 
1.06 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Zixiang(Jerry) Lei 
 
 
5D 
 
 
5.5/6 
 
 
Loss 
 
 
-4.33 
 
 
 
 
 
Black 
 
 
0 
 
 
 
 
 
Chahine Koleejan 
 
 
5D 
 
 
5.5/6 
 
 
Loss 
 
 
-3.55