KNSB FIDE
PR

Pieter Roos

Rated since January 2023

1537 Classic
1537 Rapid
1537 Blitz

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 · Saturday 28 March 2026
KEMPEN VAN, L. (LEX) 1538
9207 NBSB Competitie 2023/2024 2e helft Groep A · Monday 8 April 2024
POST, L. (LOUWE) 1503
8282 Tata Steel Chess Tournament 2025 Dagvierkampen · Monday 20 January 2025
KNEGT DE, S. (SIMON) 1503
9801 KNSB competitie 2024-2025 Klasse 6 ronde 2 · Saturday 9 November 2024
SINGH, A. (ANIRUDDH) 1472
9952 KNSB competitie 2024-2025 Klasse 6 ronde 3 · Saturday 23 November 2024
Worst losses
JONG DE, P.H. (HUIB) 1186
6419 Tata Steel Chess Tournament 2023 Dagvierkampen · Wednesday 18 January 2023
OOSTVOGELS, K.J.M. (KIMBERLEY) 1274
6486 NBSB Competitie Groep A · Saturday 8 October 2022
BRAAKE TER, K. (KRIJN) 1294
6419 Tata Steel Chess Tournament 2023 Dagvierkampen · Tuesday 17 January 2023
DAM VAN, D. (DICK) 1421
8275 Tata Steel Chess Tournament 2024 Dagvierkampen · Wednesday 17 January 2024
WELS, B. (BERT) 1423
12595 KNSB competitie 2025-2026 Klasse 6 ronde 4 · Saturday 13 December 2025
Tata Steel Chess Tournament 2025 Dagvierkampen Friday 17 January 2025 +1–2=0 -14.2
Tata Steel Chess Tournament 2024 Dagvierkampen Friday 12 January 2024 +1–1=1 +3.7
Tata Steel Chess Tournament 2023 Dagvierkampen Friday 13 January 2023 +0–3=0 -32.0
KNSB competitie 2025-2026 Klasse 6 ronde 5 Saturday 20 September 2025 +2–0=0 +43.0
KNSB competitie 2025-2026 Klasse 6 ronde 6 Saturday 20 September 2025 +0–1=0
KNSB competitie 2025-2026 Klasse 6 ronde 4 Saturday 20 September 2025 +0–1=0 -16.2
KNSB competitie 2025-2026 Klasse 6 Ronde 3 Saturday 20 September 2025 +0–0=1 +1.6
KNSB competitie 2025-2026 Klasse 6 ronde 2 Saturday 20 September 2025 +0–1=0 -9.1
KNSB competitie 2025-2026 Klasse 6 ronde 1 Saturday 20 September 2025 +0–1=0 -15.9
NBSB Beker B 2024-2025 Ronde 1 Saturday 19 October 2024 +0–1=0 -6.6
NBSB Avondcompetitie 2024-2025 Ronde 5 Monday 30 September 2024 +0–1=0 -5.9
NBSB Avondcompetitie 2024-2025 Ronde 4 Monday 30 September 2024 +0–1=0 -6.9
NBSB Avondcompetitie 2024-2025 Ronde 3 Monday 30 September 2024 +0–1=0 -15.4
KNSB competitie 2024-2025 Klasse 6 ronde 6 Saturday 21 September 2024 +0–1=0 -6.5
KNSB competitie 2024-2025 Klasse 6 ronde 5 Saturday 21 September 2024 +0–1=0 -12.9
KNSB competitie 2024-2025 Klasse 6 ronde 4 Saturday 21 September 2024 +1–0=0
KNSB competitie 2024-2025 Klasse 6 ronde 3 Saturday 21 September 2024 +1–0=0 +8.2
KNSB competitie 2024-2025 Klasse 6 ronde 2 Saturday 21 September 2024 +1–0=0 +9.2
NBSB Competitie 2023/2024 2e helft Groep A Sunday 24 December 2023 +1–3=0 +5.3
NBSB competitie 2023/2024 Groep A Friday 1 September 2023 +1–1=1 +16.5
NBSB competitie 2023 Groep A Sunday 1 January 2023 +1–0=0 +7.1
NBSB Competitie Groep A Wednesday 14 September 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 1537 May 1, 2026

Games

Wins 11
Losses 23
Draws 3
Win Rate 30%

Performance by Color

Color Wins Draws Losses Win Rate
White 7 1 15 30%
Black 4 2 8 29%

Recent Matches

Droge, B. (Bart) (1824) Saturday 28 March 2026 WIN +21.5
Droge, B. (Bart) (1824) Saturday 28 March 2026 WIN +21.5
Ding, D. (David) Saturday 7 February 2026 LOSS
Wels, B. (Bert) (1423) Saturday 13 December 2025 LOSS -16.2
Ploum, N. (Nick) (1584) Saturday 22 November 2025 DRAW +1.6
Verhagen, A. (Ad) (1637) Saturday 1 November 2025 LOSS -9.1
Megens, F.A.M. (Frans) (1455) Saturday 4 October 2025 LOSS -15.9
Hollander, L. (Lars) (1745) Saturday 8 March 2025 LOSS -6.5
Reitsma, E.H. (Ebe) (1788) Tuesday 11 February 2025 LOSS -5.9
Kempen van, L. (Lex) (1571) Saturday 8 February 2025 LOSS -12.9
Vos de, L. (Leo) (1648) Wednesday 22 January 2025 LOSS -10.9
Hoof van, R. (Ruud) (1605) Tuesday 21 January 2025 LOSS -12.4
Post, L. (Louwe) (1503) Monday 20 January 2025 WIN +9.1
Mollema, H. (Henk) (1771) Monday 13 January 2025 LOSS -6.9
Asperen van, T.C. (Thijs) Saturday 14 December 2024 WIN
Vissers, H.P.J. (Henk) (1516) Thursday 28 November 2024 LOSS -15.4
Singh, A. (Aniruddh) (1472) Saturday 23 November 2024 WIN +8.2
Knegt de, S. (Simon) (1503) Saturday 9 November 2024 WIN +9.2
Postuma, J. (Jaap) (1788) Saturday 19 October 2024 LOSS -6.6
Kempen van, L. (Lex) (1538) Monday 8 April 2024 WIN +10.3