SB

Siem Boon

Rated since March 2026

1424 Classic
1424 Rapid
1424 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
WIT DE, S. (STEF) 1520
11681 GZ Midzomertoernooi 2025 Groep A Midzomer ronde 5-8 · Wednesday 2 July 2025
MORSINK, J.J. (HANS) 1484
11681 GZ Midzomertoernooi 2025 Groep A Midzomer ronde 5-8 · Wednesday 23 July 2025
LEEUWEN VAN, A.P. (ANDRE) 1359
10674 GZ Midzomertoernooi 2025 Groep A · Wednesday 25 June 2025
Worst losses
JINSSEN, C. (CASPAR) 1228
10674 GZ Midzomertoernooi 2025 Groep A · Wednesday 18 June 2025
BEST DE, H. (HARRY) 1496
11681 GZ Midzomertoernooi 2025 Groep A Midzomer ronde 5-8 · Wednesday 16 July 2025
TADROUS, G. (GEORGE) 1560
11722 GZ Midzomertoernooi 2025 Groep A ronde 9 t/m 12 · Wednesday 6 August 2025
SNEL, R. (RENZO) 1575
11722 GZ Midzomertoernooi 2025 Groep A ronde 9 t/m 12 · Wednesday 13 August 2025
No FIDE-rated tournaments found.
NHSB-competitie 2025-2026 Viertallen B t/m 07-12-2025 Monday 1 September 2025 +0–1=0
GZ Midzomertoernooi 2025 Groep A ronde 9 t/m 12 Wednesday 4 June 2025 +0–2=0 -70.5
GZ Midzomertoernooi 2025 Groep A Midzomer ronde 5-8 Wednesday 4 June 2025 +2–1=1
GZ Midzomertoernooi 2025 Groep A Wednesday 4 June 2025 +1–3=0

Rating History

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Peak Ratings

Classic 1424 March 1, 2026
Rapid 1424 March 1, 2026
Blitz 1424 March 1, 2026

Games

Wins 3
Losses 7
Draws 1
Win Rate 27%

Performance by Color

Color Wins Draws Losses Win Rate
White 0 1 5 0%
Black 3 0 2 60%

Recent Matches

Kromwijk, A. (Ace) Tuesday 2 December 2025 LOSS
Snel, R. (Renzo) (1575) Wednesday 13 August 2025 LOSS -34.4
Tadrous, G. (George) (1560) Wednesday 6 August 2025 LOSS -36.2
Morsink, J.J. (Hans) (1484) Wednesday 23 July 2025 WIN
Best de, H. (Harry) (1496) Wednesday 16 July 2025 LOSS
Mantel, A. (André) (1485) Wednesday 9 July 2025 DRAW
Wit de, S. (Stef) (1520) Wednesday 2 July 2025 WIN
Leeuwen van, A.P. (Andre) (1359) Wednesday 25 June 2025 WIN
Jinssen, C. (Caspar) (1228) Wednesday 18 June 2025 LOSS
Kuin, E. (Eline) Wednesday 11 June 2025 LOSS
Alst van, J. (Jordi) Wednesday 4 June 2025 LOSS