KNSB FIDE
SF

Sono Folkers

Rated since June 2022

1827 Classical
1747 Rapid
1765 Blitz

The good & the bad

Worst losses
WAARDENBURG, MARLINDE 1892
Chessfestival Groningen 2025 Vierkampen · 2025-12-22
UITERMARK, IMRE 1927
Chessfestival Groningen 2025 Vierkampen · 2025-12-22
POELSTRA, BEN 1933
Chessfestival Groningen 2025 Vierkampen · 2025-12-22

FIDE Tournaments

Chessfestival Groningen 2025 Vierkampen 2025-12-22 +0–3=0 -54.0
Chess Festival Groningen Compact Saturday 21 December 2024 +3–0=2 +64.6
Chess Festival Groningen Vierkampen Saturday 21 December 2024 +1–2=0 -3.8
Chess Festival Groningen Compact C Thursday 21 December 2023 +8–2=0 +80.0
Chess Festival Groningen Vierkampen Thursday 21 December 2023 +6–0=0 +100.6
Hoogeveen 2023 Middaggroep Groep A Saturday 21 October 2023 +6–4=8 +180.9
Weekendtoernooi Groninger Combinatie / PK NOSBO Groep A Thursday 18 May 2023 +4–4=4 +49.7

Rating History

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Peak Ratings

Classical 1881
Rapid 1782
Blitz 1766

Games

Wins 0
Losses 3
Draws 0
Win Rate 0%

Performance by Color

Color Wins Draws Losses Win Rate
White 0 0 2 0%
Black 0 0 1 0%

All-time Games (from rating history)

Classical 48
Rapid 4
Blitz 7

Recent Matches

Poelstra, Ben (1933) 2025-12-22 LOSS -17.2
Waardenburg, Marlinde (1892) 2025-12-22 LOSS -19.2
Uitermark, Imre (1927) 2025-12-22 LOSS -17.6