AR

Aad Jan Roos

Rated since January 2023

1659 Classic
1674 Rapid
1684 Blitz

RIVALRY

Nemesis
Landsheer, J. (Jeroen)
Games: 3 · Win rate: 33%

The good & the bad

Best wins
LANDSHEER, J. (JEROEN) 1829
8542 S.V. Erasmus interne competitie 22-01-2024 t/m 19-02-2024 (140014) · Monday 5 February 2024
JONG DE, J.H.A. (JESSE) 1779
9088 Erasmus Watertorentoernooi Groep A Ronde 3 t/m 5 · Monday 29 April 2024
TAAPKEN, D. (DOMINIQUE) 1701
13781 Veertiende Erasmus rapidtoernooi Groep B · Saturday 9 May 2026
RUIMSCHOOT, P. (PETER) 1552
10904 S.V. Erasmus interne competitie 20-01-2025 t/m 24-03-2025 (140014) · Monday 24 March 2025
VERMEER, NORD-JAN 1503
13781 Veertiende Erasmus rapidtoernooi Groep B · Saturday 9 May 2026
Worst losses
AS VAN, C.J. (COR) 1552
6907 S.V. Erasmus interne competitie 27-02-2023 t/m 27-03-2023 (140014) · Monday 27 February 2023
BEERENDS, U. (UNGER) 1575
10730 Erasmus Watertorentoernooi Groep A · Monday 14 April 2025
GORKUM VAN, K. (KLAAS) 1587
13781 Veertiende Erasmus rapidtoernooi Groep B · Saturday 9 May 2026
MEERKERK VAN, J. (JAAP) 1676
8542 S.V. Erasmus interne competitie 22-01-2024 t/m 19-02-2024 (140014) · Monday 19 February 2024
BOER, G.M. (GERRIT) 1711
13673 S.V. Erasmus interne competitie 30-03-2026 t/m 20-04-2026 (140014) · Monday 13 April 2026
No FIDE-rated tournaments found.
Erasmus Watertorentoernooi Ronde 3 t/m/ 6 Monday 11 May 2026 +1–1=0 -0.4
Erasmus Watertorentoernooi Ronde 1 t/m/ 2 Monday 11 May 2026 +0–2=0 -12.9
Veertiende Erasmus rapidtoernooi Groep B Saturday 9 May 2026 +3–2=2 +2.5
S.V. Erasmus interne competitie 30-03-2026 t/m 20-04-2026 (140014) Monday 16 February 2026 +0–1=0 -11.6
S.V. Erasmus interne competitie 16-02-2026 t/m 23-03-2026 (140014) Monday 16 February 2026 +0–5=0 -42.6
Erasmus Watertorentoernooi Groep A Ronde 7 Monday 7 April 2025 +0–0=1 -2.1
Erasmus Watertorentoernooi Groep A Ronde 3 t/m 6 Monday 7 April 2025 +0–1=2 -16.2
Erasmus Watertorentoernooi Groep A Monday 7 April 2025 +0–1=1 -30.1
S.V. Erasmus interne competitie 31-03-2025 t/m 31-03-2025 (140014) Monday 20 January 2025 +0–1=0 -15.3
S.V. Erasmus interne competitie 20-01-2025 t/m 24-03-2025 (140014) Monday 20 January 2025 +1–1=4 -34.0
Erasmus Watertorentoernooi Groep A Ronde 6 t/m 7 Monday 15 April 2024 +0–0=2 +5.5
Erasmus Watertorentoernooi Groep A Ronde 3 t/m 5 Monday 15 April 2024 +1–0=1 +15.9
Erasmus Watertorentoernooi Groep A Ronde 1 t/m 2 Monday 15 April 2024 +1–1=0 -7.0
S.V. Erasmus interne competitie 22-01-2024 t/m 19-02-2024 (140014) Monday 22 January 2024 +2–1=1 -2.9
Watertorentoernooi Ronde 4 t/m 7 Monday 3 April 2023 +0–1=0 -10.3
Watertorentoernooi Watertoren Monday 3 April 2023 +0–1=1 -8.4
S.V. Erasmus interne competitie 27-02-2023 t/m 27-03-2023 (140014) Monday 16 January 2023 +1–1=0 -15.5
S.V. Erasmus interne competitie 16-01-2023 t/m 20-02-2023 (140014) Monday 16 January 2023 +1–1=3 -30.0

Rating History

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Peak Ratings

Classic 1824 July 1, 2024
Rapid 1727 March 1, 2026
Blitz 1727 March 1, 2026

Games

Wins 11
Losses 21
Draws 18
Win Rate 22%

Performance by Color

Color Wins Draws Losses Win Rate
White 6 11 11 21%
Black 5 7 10 23%

Recent Matches

Harkanyi, A.H. (Adam) (1990) Monday 15 June 2026 LOSS -3.1
Slager, S. (Sven) (1307) Monday 1 June 2026 WIN +2.7
Prins, H. (Henk) (1836) Monday 18 May 2026 LOSS -7.1
Rensen, M.A. (Martin) (1881) Monday 11 May 2026 LOSS -5.8
Taapken, D. (Dominique) (1701) Saturday 9 May 2026 WIN +13.5
Gloudemans, L.H.C.M. (Luuk) (1762) Saturday 9 May 2026 DRAW +3.1
Kondrashov, M. (Mark) (1750) Saturday 9 May 2026 LOSS -9.8
Lindeboom, F. (Fokke) (1759) Saturday 9 May 2026 DRAW +3.0
Gorkum van, K. (Klaas) (1587) Saturday 9 May 2026 LOSS -15.4
Vermeer, Nord-Jan (1503) Saturday 9 May 2026 WIN +6.9
Koelman, W.R.J. (Wisse) (1195) Saturday 9 May 2026 WIN +1.2
Boer, G.M. (Gerrit) (1711) Monday 13 April 2026 LOSS -11.6
Houten van, A.C.J. (Arno) (1918) Monday 23 March 2026 LOSS -6.3
Smit, J. (Jan) (1794) Monday 16 March 2026 LOSS -10.2
Tromer, S.I. (Stephan) (1750) Monday 2 March 2026 LOSS -11.7
Korte de, J.A. (Jan) (1861) Monday 23 February 2026 LOSS -8.0
Geerlings, V. (Vincent) (1912) Monday 16 February 2026 LOSS -6.5
Engelen, N.D.S. (Niels) (1668) Monday 2 June 2025 DRAW -2.1
Knegt de, A.P. (Bram) (1693) Monday 26 May 2025 DRAW -1.8
Wild de, F.C. (Fred) (1579) Monday 19 May 2025 DRAW -5.5