Jean-francois Dieffenthaler

FRA · 61 yrs · K=20 · Peak 1640 (Feb 2026)

Best performance: 1922 at Haut Rhin 2(Best of 2009)

World #=138149 live3621#134,528 publishedFrance #=10132

OCT26 Rating

1635

Live Rating

1635.0

Change

0.0

Games Played

How live ratings are calculated

Rating History · Classical

Loading chart…

Official classical rating by month

List	Rating	Change
Oct 2026	1635	0
Sep 2026	1635	0
Aug 2026	1635	0
Jul 2026	1635	0
Jun 2026	1635	-3
May 2026	1638	+6
Apr 2026	1632	0
Mar 2026	1632	-8
Feb 2026	1640	+6
Jan 2026	1634	+6
Dec 2025	1628	0
Nov 2025	1628	0

Classical games since the October list

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

	Last played	Score	TPR
	Team 2026 - EST MaiMay 3 – May 23	½/1	—

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

Event timeline · Classical

50 of 69 events

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.

Team 2026 - EST Mai—(1)
May 2026Teamfederation source
Score ½/1Opp avg 1544Start 1638
Team 2026 - EST Avril—(1)
Mar – Apr 2026Teamfederation source
Score 1/1Opp avg 1477Start 1632
Team 2026 - EST Fevrier—(1)
Jan – Feb 2026Teamfederation source
Score 0/1Opp avg 1685Start 1634
Team 2026 - EST Janvier—(1)
Dec 2025 – Jan 2026Teamfederation source
Score 1/1Opp avg 1524Start 1628
Team 2026 - EST Decembre—(1)
Nov – Dec 2025Teamfederation source
Score 1/1Opp avg 1511Start 1628
Team 2025 - EST Mai—(0)
May 2025Teamfederation source
Score 0/1Start 1628
Team 2025 - EST Mars—(1)
Feb – Mar 2025Teamfederation source
Score 0/1Opp avg 1602Start 1631
Team 2025 - EST Fevrier—(1)
Feb 2025Teamfederation source
Score 1/1Opp avg 1544Start 1631
Team 2025 - EST Janvier—(0)
Jan 2025Teamfederation source
Score 1/1Start 1631
Team 2025 - EST Decembre—(1)
Dec 2024Teamfederation source
Score 1/1Opp avg 1626Start 1607
Team 2025 - EST Novembre—(1)
Nov 2024Teamfederation source
Score 1/1Opp avg 1556Start 1598
Team 2025 - EST Octobre—(1)
Oct 2024Teamfederation source
Score 0/1Opp avg 1434Start 1613
Team 2024 - EST mai—(0)
May 2024Teamfederation source
Score 0/2Start 1613
Team 2024 - EST mars—(1)
Mar 2024Teamfederation source
Score 0/1Opp avg 1719Start 1620
Team 2024 - EST janvier—(1)
Jan 2024Teamfederation source
Score 1/1Opp avg 1250Start 1360
Team 2024 - EST decembre—(1)
Dec 2023Teamfederation source
Score ½/1Opp avg 1383Start 1359
Team 2024 - EST novembre—(2)
Nov 2023Teamfederation source
Score 0/2Opp avg 1408Start 1377
Team 2024 - EST octobre—(1)
Oct 2023Teamfederation source
Score 0/1Opp avg 1355Start 1388
Team 2023 - EST Mai—(1)
May 2023Teamfederation source
Score 2/2Opp avg 1052Start 1388
Team 2023 - EST Avril—(1)
Mar – Apr 2023Teamfederation source
Score 0/1Opp avg 1383Start 1410
Team 2023 - EST Mars—(1)
Mar 2023Teamfederation source
Score 0/1Opp avg 1334Start 1410
Team 2023 - EST Fevrier—(0)
Feb 2023Teamfederation source
Score 1/1Start 1410
Team 2023 - EST Janvier—(0)
Jan 2023Teamfederation source
Score 1/1Start 1410
Team 2023 - EST Decembre—(1)
Dec 2022Teamfederation source
Score 1/1Opp avg 1507Start 1397
Team 2023 - EST Novembre—(0)
Nov 2022Teamfederation source
Score 1/1Start 1397

Rated near Jean-francois Dieffenthaler · Classical

World

#=138149Ricardo Martin Franceschi Urbaez1635.0
#=138149Bernard Lubrano1635.0
#=138149Jean-francois Dieffenthaler1635.0
#=138149Rudy Gunarto1635.0
#=138149Ajann Rose1635.0

France

#=10132Khanh-Hai Nguyen1635.0
#=10132Bernard Lubrano1635.0
#=10132Jean-francois Dieffenthaler1635.0
#=10132Nicolas Fabre1635.0
#=10132Charles Vignes1635.0

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