X
GM
Xiu, Deshun
CHN·Born 1989·FIDE #8603693·669 Games
Classical2509590 Games
Rapid254656 Games
Blitz243923 Games
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669 games analyzed
Statistics
Total
669Wins
242Draws
277Losses
15036%41%22%
Play Style
What you need to know before facing themElite accuracy: 93.8% average
Low resilience (34%): Doesn't save lost positions
Solid conversion: 85%
Very consistent (85%)
Very precise: only 0.1 blunders/game
Dominates 1.c4 ♔ (69% in 40 games)
Vulnerable to 1.c4 ♚ (only 44%)
Deep Analysis
Stockfish 18 · Classical games · 109 analyzedAccuracy by phase
Opening
97.1%
Middlegame
93.9%
Endgame
95.2%
Clutch Factor — Move accuracy when winning vs. equal vs. losing — does their level drop when the game turns against them?
+6%Winning (+2 or more)
95%32g
Equal position
95%54g
Losing (-2 or more)
89%23g
Performance under pressure
Problematic Pieces — Which pieces cause most errors?
29%
22 errors
19%
14 errors
16%
12 errors
15%
11 errors
13%
10 errors
8%
6 errors
Critical Moment — When does the first serious error occur?
Move 40 average0%
57%
0%
0%
43%
1-15
16-25
26-35
36-45
46+
57% of blunders occur between move 16-25. Keep tension until that moment.
Error Heatmap — Where do most errors occur?
4
5
4
5
FewMany
Errors mapped
34
Hotspot zone
a5 / h7
Critical squares
a5
5 err
h7
5 err
c6
4 err
g7
4 err
b4
3 err
a5/h7 concentrate most errors. Force decisions in those zones.
Openings
Based on player gamesWeaknesses
— exploit these linesNo significant weaknesses detected as White
No significant weaknesses detected as Black
Strengths
— avoid these linesWhite58.8%Wins
Queen's Gambit Declined — 1.d4 d5 2.c4 e617 Games · last played 10 months ago
Black60.0%Wins
Sicilian: Classical — 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc610 Games · last played 3 months ago
Black46.7%Wins
Catalan — 1.d4 Nf6 2.c4 e6 3.g315 Games · last played 2 years ago
Critical Blunders
10 errors · Stockfish#88Rg2??vs PengOTB · 2025
#56Ke8??vs ChenOTB · 2025
#30Rc8??vs XiaoOTB · 2025
#108h7??vs ChenOTB · 2025
#19Re1??vs ZhaoOTB · 2025
#33Rgg7??vs LiuOTB · 2024
#18Rc5??vs DaiClassical · 2024
#25Qa5??vs ZengClassical · 2024
#20Rd1+??vs ZhaoOTB · 2024
#53h7??vs PengOTB · 2024
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Endgame Statistics
PRO23 endgame categories analyzedEndgame Statistics
Reveal weaknesses →
23 endgame categories analyzed — discover where they collapse under pressure
Repertoire
6
5
4
3
Move arrowsmost-played moves
Stockfish
333 Games
40%44%16%
MoveGamesPerformance%
1.d4
17360%
1.Nf3
9962%
1.c4
4069%
1.e4
1961%
1.g3Strong
1100%
1.b3
150%
CHN