KNSB FIDE
JA

Joas Achterstraat

Rated since February 2023

RIVALRY

Nemesis
Feenstra, B. (Bram)
Games: 3 · Win rate: 67%
Kryptonite
Peelen, C. (Charles)
Games: 3 · Win rate: 33%

The good & the bad

Best wins
FEENSTRA, B. (BRAM) 1867
12315 Tinnen Soldaat jeugdschaaktoernooi Groep A · Saturday 3 January 2026
DASSELAAR VAN, L.A.A. (LIAM ALEXANDER) 1650
12315 Tinnen Soldaat jeugdschaaktoernooi Groep A · Saturday 3 January 2026
BRINK VAN DEN, R.R. (RAJ) 1637
12315 Tinnen Soldaat jeugdschaaktoernooi Groep A · Saturday 3 January 2026
WESTERHOF, F. (FLEUR) 1618
6684 PJK OSBO C · Sunday 12 February 2023
PEELEN, C. (CHARLES) 1548
7987 Tinnen Soldaat Groep A · Saturday 6 January 2024
Worst losses
HUURNINK, P. (PIETER) 612
5807 Tinnen Soldaat Groep A · Saturday 7 January 2023
ZHENG, M. (MAX) 773
5807 Tinnen Soldaat Groep A · Saturday 7 January 2023
VERTELMAN, S. (SIEGER) 975
5986 KNSB-Jeugdclubcompetitie 4, AC Finale A en C · Saturday 9 December 2023
PEELEN, C. (CHARLES) 1336
6684 PJK OSBO C · Saturday 11 February 2023
FREDERIKS, J. (JESSE) 1462
6684 PJK OSBO C · Saturday 11 February 2023
No FIDE-rated tournaments found.
Tinnen Soldaat jeugdschaaktoernooi Groep A Saturday 3 January 2026 +3–2=0 +8.0
Tinnen Soldaat Groep A Saturday 6 January 2024 +2–2=1 -4.4
KNSB-Jeugdclubcompetitie 4, AC Finale A en C Saturday 9 December 2023 +1–1=0 -53.7
KNSB-Jeugdclubcompetitie 3, AC+ E finale A en C Saturday 11 November 2023 +1–0=1 +9.8
KNSB-Jeugdclubcompetitie 2, AC Groep AC Saturday 30 September 2023 +1–0=1 -3.7
SOS Competitie 2023/2024 April 2024 Friday 1 September 2023 +0–0=1 -3.9
EquivaLent GP schaaktoernooi Groep A Saturday 15 April 2023 +5–1=1 +244.9
11e Martien Roodtoernooi Groep A Saturday 18 February 2023 +5–0=1 +354.7
PJK OSBO C Saturday 11 February 2023 +2–3=0 +126.6
Tinnen Soldaat Groep A Saturday 7 January 2023 +5–2=0 -196.5
SOS Competitie 2022/2023 April 2023(K3) Monday 12 September 2022 +0–1=0

Rating History

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Peak Ratings

Classic 1750 April 1, 2024
Rapid 1758 Feb. 1, 2026

Games

Wins 25
Losses 12
Draws 6
Win Rate 58%

Performance by Color

Color Wins Draws Losses Win Rate
White 12 4 6 55%
Black 13 2 6 62%

Recent Matches

Boswinkel, L. (Lars) (1625) Saturday 3 January 2026 LOSS -26.8
Meijer, J. (Joas) (1751) Saturday 3 January 2026 LOSS -19.9
Feenstra, B. (Bram) (1867) Saturday 3 January 2026 WIN +26.4
Brink van den, R.R. (Raj) (1637) Saturday 3 January 2026 WIN +13.9
Dasselaar van, L.A.A. (Liam Alexander) (1650) Saturday 3 January 2026 WIN +14.5
Sigmond, B. (Bert) (1702) Friday 12 April 2024 DRAW -3.9
Shirokov, N. (Nestor) (1653) Saturday 6 January 2024 LOSS -7.7
Cloosterman, T. (Teun) (1491) Saturday 6 January 2024 LOSS -37.1
Peelen, C. (Charles) (1548) Saturday 6 January 2024 WIN +30.9
Schee van der, A. (Arjen) (1435) Saturday 6 January 2024 WIN +6.4
Roelofs, L. (Laurens) (1613) Saturday 6 January 2024 DRAW +3.1
Vertelman, S. (Sieger) (975) Saturday 9 December 2023 LOSS -55.7
Emans, T. (Tobias) (1065) Saturday 9 December 2023 WIN +2.0
Middelkoop, N. (Nathan) Saturday 11 November 2023 WIN
Rantz, T. (Thomas) (1686) Saturday 11 November 2023 DRAW +9.8
Patel, S. (Sparsh) (1022) Saturday 30 September 2023 WIN +2.9
Kolijn, D. (David) (1449) Saturday 30 September 2023 DRAW -6.6
Harten van, T.M. (Thijs) Friday 21 April 2023 LOSS
Lieshout van, T.L. (Tobias) (1176) Saturday 15 April 2023 WIN +71.8
Cloosterman, T. (Teun) (1223) Saturday 15 April 2023 WIN +77.0