Jan Willem Koelmans

NED · 66 yrs · K=20 · Peak 2050 (Nov 2009)

Best performance: 2000 at Amsterdam Chess Festival 2026 - Group B(Best of 2026)

World #=61877 live259#61,618 publishedNetherlands #=2585

OCT26 Rating

1850

Live Rating

1850.0

Change

0.0

Games Played

Rating History · Classical

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Classical games since the October list

No rated standard games this rating periodsince the OCT26 list (Oct 1, 2026)

	Last played	Score	TPR
	Summer Prague Open 2026 - BAug 7 – Aug 15TPR 1900	6½/9	1900

The live rating moves only when new rated games are played. Until then it matches the published rating.

8 of 27 events · All years

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

Summer Prague Open 2026 - B1900
Aug 2026Swisschess-results.com
#2 in 2026Score 6½/9Opp avg 1734Start 1832
Amsterdam Chess Festival 2026 - Group B2000
Jul 2026Swissfederation source
Best of 2026Score 5/8Opp avg 1905Start 1787
HSG Open 2026 Group B1688
Jun 2026Swisschess-results.com
#6 in 2026Score 1½/6Opp avg 1837Start 1800
18th BPB Limburg Open 2026 - group C1808
May 2026Swisschess-results.com
#4 in 2026Score 4½/7Opp avg 1706Start 1800
DD Den Haag Open Kampioenschap 20261773
Feb – Mar 2026Swissfederation source
#5 in 2026Score 3½/6Opp avg 1898Start 1789
85e Noteboomtoernooi - Vierkampen—(2)
Feb 2026Swissfederation source
Score 2/3Opp avg 1812Start 1789
Tata Steel Chess 2026 - Tienkampen1832
Jan – Feb 2026Round robinfederation source
#3 in 2026Score 5/9Opp avg 1789Start 1783
2026 Chess.com Botwinnik Open - Vierkampen—(2)
Jan 2026Round robinfederation source
Score 2/3Opp avg 1778Start 1783

Live ratings projected from the OCT26 published list · Not affiliated with FIDE