KNSB FIDE
LB

Leo Bosma

Rated since January 2023

1508 Rapid

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
VRIES DE, H. (HERMAN) 1537
13073 Fries Kampioenschap 60+ Groep A · Monday 16 February 2026
BOER DE, J. (JALT) 1343
13471 Schaak Combinatie Leeuwarden interne competitie 03-02-2026 t/m 24-03… · Tuesday 3 March 2026
MULKEN VAN, O.J.A. (ONNO) 1243
13471 Schaak Combinatie Leeuwarden interne competitie 03-02-2026 t/m 24-03… · Tuesday 10 February 2026
AARTSMA, D. (DOETA) 1200
13471 Schaak Combinatie Leeuwarden interne competitie 03-02-2026 t/m 24-03… · Tuesday 17 February 2026
Worst losses
DOKTER, M. (MENNO) 1455
13471 Schaak Combinatie Leeuwarden interne competitie 03-02-2026 t/m 24-03… · Tuesday 24 March 2026
BOZANIC, L. (LEON) 1670
12358 Waling Dijkstra Weekendtoernooi 2025 - · Saturday 15 November 2025
MAANEN VAN, L. (LEO) 1690
13073 Fries Kampioenschap 60+ Groep A · Thursday 12 February 2026
WASSENAAR, J.M. (MEINE) 1787
13073 Fries Kampioenschap 60+ Groep A · Friday 20 February 2026
JANSEN, H. (HENK) 1834
13073 Fries Kampioenschap 60+ Groep A · Tuesday 3 February 2026
Fries Kampioenschap 60+ Groep A Tuesday 3 February 2026 +1–4=0 -2.9
Waling Dijkstra Weekendtoernooi 2025 - Friday 14 November 2025 +1–3=1 -14.1
Schaak Combinatie Leeuwarden Intern 1-10 Tuesday 16 September 2025 +0–1=0
Schaak Combinatie Leeuwarden interne competitie 03-02-2026 t/m 24-03… Monday 1 September 2025 +3–2=0 +0.8

Rating History

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Peak Ratings

Classic 1566 May 1, 2025
Rapid 1531 Feb. 1, 2025
Blitz 1522 March 1, 2026

Games

Wins 5
Losses 10
Draws 1
Win Rate 31%

Performance by Color

Color Wins Draws Losses Win Rate
White 4 0 3 57%
Black 1 1 7 11%

Recent Matches

Dokter, M. (Menno) (1455) Tuesday 24 March 2026 LOSS -14.2
Boer de, J. (Jalt) (1343) Tuesday 3 March 2026 WIN +7.1
Ofoegbu, D.C. (Daniel) Tuesday 24 February 2026 LOSS
Wassenaar, J.M. (Meine) (1787) Friday 20 February 2026 LOSS -4.1
Aartsma, D. (Doeta) (1200) Tuesday 17 February 2026 WIN +3.5
Vries de, H. (Herman) (1537) Monday 16 February 2026 WIN +13.5
Maanen van, L. (Leo) (1690) Thursday 12 February 2026 LOSS -6.6
Dzaferspahic, Z. (Zahid) (1869) Wednesday 11 February 2026 LOSS -2.6
Mulken van, O.J.A. (Onno) (1243) Tuesday 10 February 2026 WIN +4.4
Jansen, H. (Henk) (1834) Tuesday 3 February 2026 LOSS -3.2
Cnossen, H.F. (Hinke Fiona) Sunday 16 November 2025 WIN
Roersma, M. (Melvin) (1435) Sunday 16 November 2025 DRAW -1.5
Bozanic, L. (Leon) (1670) Saturday 15 November 2025 LOSS -7.6
Both, G.P. (Gert) (1931) Saturday 15 November 2025 LOSS -1.9
Koes, R. (Richard) (1849) Friday 14 November 2025 LOSS -3.2
Kalkhuis, J. (Jordy) Tuesday 28 October 2025 LOSS