KNSB FIDE
PR

Pieter Roos

Rated since January 2023

1537 Classic

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
DROGE, B. (BART) 1824
13316 KNSB competitie 2025-2026 Klasse 6 ronde 5 · 2026-03-28
KEMPEN VAN, L. (LEX) 1538
9207 NBSB Competitie 2023/2024 2e helft Groep A · 2024-04-08
POST, L. (LOUWE) 1503
8282 Tata Steel Chess Tournament 2025 Dagvierkampen · 2025-01-20
KNEGT DE, S. (SIMON) 1503
9801 KNSB competitie 2024-2025 Klasse 6 ronde 2 · 2024-11-09
SINGH, A. (ANIRUDDH) 1472
9952 KNSB competitie 2024-2025 Klasse 6 ronde 3 · 2024-11-23
Worst losses
JONG DE, P.H. (HUIB) 1186
6419 Tata Steel Chess Tournament 2023 Dagvierkampen · 2023-01-18
OOSTVOGELS, K.J.M. (KIMBERLEY) 1274
6486 NBSB Competitie Groep A · 2022-10-08
BRAAKE TER, K. (KRIJN) 1294
6419 Tata Steel Chess Tournament 2023 Dagvierkampen · 2023-01-17
DAM VAN, D. (DICK) 1421
8275 Tata Steel Chess Tournament 2024 Dagvierkampen · 2024-01-17
WELS, B. (BERT) 1423
12595 KNSB competitie 2025-2026 Klasse 6 ronde 4 · 2025-12-13
Tata Steel Chess Tournament 2025 Dagvierkampen Fri, Jan 17, 2025 +1–2=0 -14.2
Tata Steel Chess Tournament 2024 Dagvierkampen Fri, Jan 12, 2024 +1–1=1 +3.7
Tata Steel Chess Tournament 2023 Dagvierkampen Fri, Jan 13, 2023 +0–3=0 -32.0
KNSB competitie 2025-2026 Klasse 6 ronde 5 Sat, Sep 20, 2025 +1–0=0 +21.5
KNSB competitie 2025-2026 Klasse 6 ronde 6 Sat, Sep 20, 2025 +0–1=0
KNSB competitie 2025-2026 Klasse 6 ronde 4 Sat, Sep 20, 2025 +0–1=0 -16.2
KNSB competitie 2025-2026 Klasse 6 Ronde 3 Sat, Sep 20, 2025 +0–0=1 +1.6
KNSB competitie 2025-2026 Klasse 6 ronde 2 Sat, Sep 20, 2025 +0–1=0 -9.1
KNSB competitie 2025-2026 Klasse 6 ronde 1 Sat, Sep 20, 2025 +0–1=0 -15.9
NBSB Beker B 2024-2025 Ronde 1 Sat, Oct 19, 2024 +0–1=0 -6.6
NBSB Avondcompetitie 2024-2025 Ronde 5 Mon, Sep 30, 2024 +0–1=0 -5.9
NBSB Avondcompetitie 2024-2025 Ronde 4 Mon, Sep 30, 2024 +0–1=0 -6.9
NBSB Avondcompetitie 2024-2025 Ronde 3 Mon, Sep 30, 2024 +0–1=0 -15.4
KNSB competitie 2024-2025 Klasse 6 ronde 6 Sat, Sep 21, 2024 +0–1=0 -6.5
KNSB competitie 2024-2025 Klasse 6 ronde 5 Sat, Sep 21, 2024 +0–1=0 -12.9
KNSB competitie 2024-2025 Klasse 6 ronde 4 Sat, Sep 21, 2024 +1–0=0
KNSB competitie 2024-2025 Klasse 6 ronde 3 Sat, Sep 21, 2024 +1–0=0 +8.2
KNSB competitie 2024-2025 Klasse 6 ronde 2 Sat, Sep 21, 2024 +1–0=0 +9.2
NBSB Competitie 2023/2024 2e helft Groep A Sun, Dec 24, 2023 +1–3=0 +5.3
NBSB competitie 2023/2024 Groep A Fri, Sep 1, 2023 +1–1=1 +16.5
NBSB competitie 2023 Groep A Sun, Jan 1, 2023 +1–0=0 +7.1
NBSB Competitie Groep A Wed, Sep 14, 2022 +1–3=0 -4.1

Rating History

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Peak Ratings

Classic 1617 Dec. 1, 2024
Rapid 1537 April 1, 2026
Blitz 1515 March 1, 2026

Games

Wins 10
Losses 23
Draws 3
Win Rate 28%

Performance by Color

Color Wins Draws Losses Win Rate
White 6 1 15 27%
Black 4 2 8 29%

Recent Matches

Droge, B. (Bart) (1824) 2026-03-28 WIN +21.5
Ding, D. (David) 2026-02-07 LOSS
Wels, B. (Bert) (1423) 2025-12-13 LOSS -16.2
Ploum, N. (Nick) (1584) 2025-11-22 DRAW +1.6
Verhagen, A. (Ad) (1637) 2025-11-01 LOSS -9.1
Megens, F.A.M. (Frans) (1455) 2025-10-04 LOSS -15.9
Hollander, L. (Lars) (1745) 2025-03-08 LOSS -6.5
Reitsma, E.H. (Ebe) (1788) 2025-02-11 LOSS -5.9
Kempen van, L. (Lex) (1571) 2025-02-08 LOSS -12.9
Vos de, L. (Leo) (1648) 2025-01-22 LOSS -10.9
Hoof van, R. (Ruud) (1605) 2025-01-21 LOSS -12.4
Post, L. (Louwe) (1503) 2025-01-20 WIN +9.1
Mollema, H. (Henk) (1771) 2025-01-13 LOSS -6.9
Asperen van, T.C. (Thijs) 2024-12-14 WIN
Vissers, H.P.J. (Henk) (1516) 2024-11-28 LOSS -15.4
Singh, A. (Aniruddh) (1472) 2024-11-23 WIN +8.2
Knegt de, S. (Simon) (1503) 2024-11-09 WIN +9.2
Postuma, J. (Jaap) (1788) 2024-10-19 LOSS -6.6
Kempen van, L. (Lex) (1538) 2024-04-08 WIN +10.3
Rahangmetan, D. (David) 2024-03-23 LOSS