KNSB FIDE
XM

Xander Mostertman

Rated since January 2023

2052 Classic
2007 Rapid
2004 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
GROOTEN, H.C.A. (HERMAN) (IM) 2263
6963 KNSB competitie 2022-2023 Meesterklasse ronde 8 · Saturday 1 April 2023
LOY, KONSTANTIN 2198
Riga Technical University Open 2024 - Tournament A · Thursday 8 August 2024
CLEMENS, A.H.P. (ADRIAN) (FM) 2159
10980 Open NOSBO Rapidkampioenschap Groep A · Saturday 14 June 2025
SNIJDERS, T.J.J. (TAKE) 2154
9640 KNSB competitie 2024-2025 Klasse 1 ronde 2 · Saturday 12 October 2024
KAMPHUIS, J. (JASPER) 2126
9790 Hoogeveen Schaaktoernooi Amateur Ochtend · Thursday 31 October 2024
Worst losses
DRENT, K.A. (KOR) 1780
13548 NOSBO-competitie 2025-2026 ronde 7 Groep A · Tuesday 14 April 2026
HENSBERGEN, W. (WILLEM) 1871
7001 SGA Competitie 2022-2023 Hoofdklasse ronde 7 · Thursday 6 April 2023
HEIKAMP, H. (HENDRIK) 1874
Open Gronings Rapid 2024 (Tijdens NK ABC, nu alleen voor senioren) · Sunday 28 April 2024
ELSINGA, B. (BRIAN) 1874
Open Gronings Rapid 2024 (Tijdens NK ABC, nu alleen voor senioren) · Sunday 28 April 2024
MAES, D.R. (DJAD) 1910
8992 HSG Open 2024 Groep A · Friday 21 June 2024
Hoogeveen Schaaktoernooi Amateur Ochtend Saturday 26 October 2024 +5–0=2 +39.6
Riga Technical University Open 2024 - Tournament A Monday 5 August 2024 +3–3=3 +35.9
HSG Open 2024 Groep A Friday 21 June 2024 +1–3=1 -32.0
Amsterdam Chess Open Groep A Friday 27 October 2023 +1–4=0 -20.9
NOSBO-competitie 2025-2026 ronde 7 Groep A Monday 13 April 2026 +0–1=0 -21.0
NOSBO-competitie 2025-2026 ronde 5 (minus één uitgestelde wedstrijd)… Monday 16 February 2026 +0–0=2 -4.6
NOSBO-competitie 2025-2026 ronde 4 Groep A Monday 19 January 2026 +0–0=1 -1.8
NOSBO-competitie 2025-2026 ronde 3 Groep A Friday 28 November 2025 +1–0=0 +3.5
NOSBO-competitie 2025-2026 ronde 2 Groep A Monday 10 November 2025 +1–0=0 +10.8
NOSBO-competitie 2025-2026 ronde 1 Hoofdklasse Monday 13 October 2025 +1–0=0 +13.7
KNSB competitie 2025-2026 Klasse 3 ronde 9 Saturday 20 September 2025 +1–0=0 +10.6
KNSB competitie 2025-2026 Klasse 3 ronde 6 Saturday 20 September 2025 +0–0=1 +1.0
KNSB competitie 2025-2026 Klasse 3 ronde 7 Saturday 20 September 2025 +0–0=2 +0.2
KNSB competitie 2025-2026 Klasse 1 ronde 3 Saturday 20 September 2025 +0–1=0 -12.1
KNSB competitie 2025-2026 Klasse 3 ronde 1 Saturday 20 September 2025 +0–1=0 -16.2
Open NOSBO Rapidkampioenschap Groep A Saturday 14 June 2025 +4–2=1 +38.2
Ljubljana Chess Festival 2025 Monday 28 April 2025 +2–3=2 -35.1
NOSBO competitie 2024-2025 April 2025 Saturday 1 March 2025 +0–1=0 -15.7
NOSBO competitie 2024-2025 Januari 2025 Monday 13 January 2025 +0–0=1 -2.8
NOSBO competitie 2024-2025 Maart 2025 Wednesday 1 January 2025 +1–1=0 -14.3
NOSBO competitie 2024-2025 Februari 2025 Wednesday 1 January 2025 +1–0=0 +4.0
NOSBO competitie 2024-2025 December 2024 Monday 25 November 2024 +1–0=0 +7.7
SGA Competitie 2024-2025 Hoofdklasse ronde 4 Monday 30 September 2024 +0–0=1 -3.6
KNSB competitie 2024-2025 Klasse 1 ronde 6 Saturday 21 September 2024 +0–0=1 +5.1
KNSB competitie 2024-2025 Klasse 1 ronde 5 Saturday 21 September 2024 +0–0=1 +3.0
KNSB competitie 2024-2025 KNSB Beker ronde 2 voor decemberlijst Saturday 21 September 2024 +0–0=1 -2.8
KNSB competitie 2024-2025 Klasse 1 ronde 4 Saturday 21 September 2024 +0–0=1 +5.9
KNSB competitie 2024-2025 Klasse 1 ronde 3 Saturday 21 September 2024 +0–0=1 +5.1
KNSB competitie 2024-2025 Klasse 1 ronde 2 Saturday 21 September 2024 +1–0=0 +16.0
KNSB competitie 2024-2025 Klasse 1 ronde 1 Saturday 21 September 2024 +1–0=0 +15.4
Open Junivierkampen Groninger Combinatie Groep A Wednesday 5 June 2024 +0–1=1 -15.6
Open Gronings Blitz Kampioenschap 2024 (Tijdens NK ABC) Wednesday 1 May 2024 +5–3=1 +3.6
Open Gronings Rapid 2024 (Tijdens NK ABC, nu alleen voor senioren) Sunday 28 April 2024 +4–3=0 -31.4
NOSBO-competitie 2023-2024 Mei 2024 Sunday 1 October 2023 +1–0=0 +6.2
NOSBO-competitie 2023-2024 April 2024 Sunday 1 October 2023 +1–1=0 -9.5
NOSBO-competitie 2023-2024 Maart 2024 Sunday 1 October 2023 +0–0=1 -2.3
NOSBO-competitie 2023-2024 Februari 2024 Sunday 1 October 2023 +2–0=0 +17.5
NOSBO-competitie 2023-2024 Januari 2024 Sunday 1 October 2023 +2–0=0 +9.9
NOSBO-competitie 2023-2024 December 2023 Sunday 1 October 2023 +1–0=0 +3.5
NOSBO competitie 2023-2024 November 2023 Sunday 1 October 2023 +1–0=0 +4.9
SGA Competitie 2023-2024 Hoofdklasse ronde 1 Sunday 1 October 2023 +0–0=1 -6.9
KNSB competitie 2023-2024 Klasse 3 ronde 9 Saturday 16 September 2023 +0–0=1 -2.0
KNSB competitie 2023-2024 Klasse 3 ronde 7 Saturday 16 September 2023 +1–0=0 +9.7
KNSB competitie 2023-2024 Klasse 3 ronde 6 Saturday 16 September 2023 +1–0=0 +5.7
KNSB competitie 2023-2024 Klasse 3 ronde 4 Saturday 16 September 2023 +1–0=0 +10.3
KNSB competitie 2023-2024 Klasse 3 ronde 2 Saturday 16 September 2023 +0–1=0 -7.1
KNSB competitie 2023-2024 Klasse 3 ronde 1 Saturday 16 September 2023 +0–0=1 +6.2
NOSBO competitie 2022-2023 Juni 2023 - beker Monday 24 October 2022 +0–1=0 -4.8
NOSBO competitie 2022-2023 Mei 2023 Monday 24 October 2022 +1–0=0 +10.7
NOSBO competitie 2022-2023 April 2023 Monday 24 October 2022 +1–0=0 +4.3
NOSBO competitie 2022-2023 April 2023 - beker Monday 24 October 2022 +1–0=0 +9.3
NOSBO competitie 2022-2023 Maart 2023 Monday 24 October 2022 +0–0=1 -1.1
NOSBO competitie 2022-2023 Februari 2023 Monday 24 October 2022 +0–0=1 +0.7
NOSBO competitie 2022-2023 Januari 2023 Monday 24 October 2022 +1–0=0 +8.5
SGA Competitie 2022-2023 Hoofdklasse ronde 7 Saturday 1 October 2022 +0–1=0 -16.9
KNSB competitie 2022-2023 Meesterklasse ronde 8 Saturday 17 September 2022 +1–0=0 +20.5
KNSB competitie 2022-2023 Klasse 4 ronde 6 Saturday 17 September 2022 +1–0=0 +8.6
KNSB competitie 2022-2023 Beker ronde 2 Saturday 17 September 2022 +1–0=0 +7.3
KNSB competitie 2022-2023 Klasse 2 ronde 4 Saturday 17 September 2022 +1–0=0 +10.8

Rating History

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Peak Ratings

Classic 2129 March 1, 2025
Rapid 2007 July 1, 2025
Blitz 2004 Oct. 1, 2024

Games

Wins 53
Losses 31
Draws 30
Win Rate 46%

Performance by Color

Color Wins Draws Losses Win Rate
White 28 14 17 47%
Black 25 16 14 45%

Recent Matches

Drent, K.A. (Kor) (1780) Tuesday 14 April 2026 LOSS -21.0
Kloosterman, A. (Anne) (2006) Saturday 11 April 2026 WIN +10.6
Veen van der, J. (Jan) (2089) Saturday 28 March 2026 DRAW +1.0
Brinks, J.W. (Jan Willem) (1997) Thursday 19 February 2026 DRAW -2.3
Brinks, J.W. (Jan Willem) (1997) Thursday 19 February 2026 DRAW -2.3
Leusden van, D. (Dennis) (2066) Saturday 7 February 2026 DRAW +0.1
Leusden van, D. (Dennis) (2066) Saturday 7 February 2026 DRAW +0.1
Berghuis, M. (Marten) (2014) Tuesday 20 January 2026 DRAW -1.8
Hoogeboom, B. (Boudewijn) (1754) Thursday 4 December 2025 WIN +3.5
Hendriks, P.A. (Peter) (2013) Thursday 13 November 2025 WIN +10.8
Hoffman, R. (Ron) (2075) Saturday 1 November 2025 LOSS -12.1
Westerlaan, S. (Sander) (2081) Thursday 16 October 2025 WIN +13.7
Veen van der, R. (Ronald) (1955) Saturday 20 September 2025 LOSS -16.2
Essen van, T.D. (Tobias) (1754) Saturday 14 June 2025 WIN +5.7
FM Foreest van, M. (Machteld) (2230) Saturday 14 June 2025 LOSS -4.5
Broertjes, S.G. (Stephan) (1891) Saturday 14 June 2025 WIN +9.8
Hulshof, P. (Peter) (2114) Saturday 14 June 2025 DRAW +4.9
FM Mostertman, M.M. (Milan) (2242) Saturday 14 June 2025 LOSS -4.2
FM Clemens, A.H.P. (Adrian) (2159) Saturday 14 June 2025 WIN +18.7
Visser, J. (Johan) (1835) Saturday 14 June 2025 WIN +8.0