SB

Siem Boon

Rated since August 2025

1385 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
REUS, N.J.M. (NICO) 1461
14144 Midzomertoernooi 2026 Ronde 5 t/m 8 · Wednesday 8 July 2026
LEEUWEN VAN, A.P. (ANDRE) 1359
10674 GZ Midzomertoernooi 2025 Groep A · Wednesday 25 June 2025
KUIN, E. (ELINE) 1298
14144 Midzomertoernooi 2026 Ronde 5 t/m 8 · Wednesday 1 July 2026
Worst losses
JINSSEN, C. (CASPAR) 1228
10674 GZ Midzomertoernooi 2025 Groep A · Wednesday 18 June 2025
MOVRIN, M.A.P.G. (MAI) 1347
13216 Midzomertoernooi 2026 Groep A · Wednesday 10 June 2026
MORSINK, J.J. (HANS) 1450
13216 Midzomertoernooi 2026 Groep A · Wednesday 17 June 2026
BEST DE, H. (HARRY) 1496
11681 GZ Midzomertoernooi 2025 Groep A Midzomer ronde 5-8 · Wednesday 16 July 2025
TADROUS, G. (GEORGE) 1530
14144 Midzomertoernooi 2026 Ronde 5 t/m 8 · Wednesday 15 July 2026
No FIDE-rated tournaments found.
Midzomertoernooi 2026 Ronde 9 t/m 12 Wednesday 3 June 2026 +0–2=0 -26.4
Midzomertoernooi 2026 Ronde 5 t/m 8 Wednesday 3 June 2026 +2–1=1 +69.1
Midzomertoernooi 2026 Groep A Wednesday 3 June 2026 +1–3=0 -81.7
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 1495 Aug. 1, 2025
Rapid 1424 March 1, 2026
Blitz 1424 March 1, 2026

Games

Wins 6
Losses 13
Draws 2
Win Rate 29%

Performance by Color

Color Wins Draws Losses Win Rate
White 2 1 8 18%
Black 4 1 5 40%

Recent Matches

Guney, M. (Mustafa) (1550) Wednesday 5 August 2026 LOSS -18.1
Brandt, D. (Dion) (1542) Wednesday 29 July 2026 LOSS -8.3
Mantel, A. (André) (1465) Wednesday 22 July 2026 DRAW +11.4
Tadrous, G. (George) (1530) Wednesday 15 July 2026 LOSS -17.4
Reus, N.J.M. (Nico) (1461) Wednesday 8 July 2026 WIN +45.2
Kuin, E. (Eline) (1298) Wednesday 1 July 2026 WIN +30.0
Schenk, A. (Alfred) Wednesday 24 June 2026 LOSS
Morsink, J.J. (Hans) (1450) Wednesday 17 June 2026 LOSS -35.4
Movrin, M.A.P.G. (Mai) (1347) Wednesday 10 June 2026 LOSS -46.3
Cornelisse, E. (Evert) Wednesday 3 June 2026 WIN
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