Theodoros Sideris

GRE · 61 yrs · K=20 · Peak 2115 (Jan 2005)

Best performance: 2216 at 2026 Team Championship of ESSNA - C Category(Best of 2026)

World #=55123 live1507#53,616 publishedGreece #673

OCT26 Rating

1879

Live Rating

1874.2

Change

-4.8

Games Played

Rating History · Classical

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Classical games since the October list

	Tournament	Score	Change	TPR	After
	ΦΘΙΝΟΠΩΡΙΝΟ open Chess Square (ΜΟΝΟ ΣΑΒΒΑΤΑ)Sep 12 – Oct 31TPR 1841	2/3	—	1841	1879.0
	198 OPEN ΣΟΑ (ΜΟΝΟ ΤΕΤΑΡΤΕΣ)Sep 16 – Oct 28TPR 1688	½/1	-4.8	1688	1874.2

Event timeline · Classical

50 of 73 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.

ΦΘΙΝΟΠΩΡΙΝΟ open Chess Square (ΜΟΝΟ ΣΑΒΒΑΤΑ)—
Sep – Oct 2026Individualchess-results.com
#13 in 2026Score 2/3TPR 1844Opp avg 1719Start 1870
198 OPEN ΣΟΑ (ΜΟΝΟ ΤΕΤΑΡΤΕΣ)-4.8
Sep – Oct 2026Individualchess-results.com
#16 in 2026Score 1½/3TPR 1626Opp avg 1626Start 1870
33ο OPEN ΝΙΚΑΙΑΣ "ΤΙΜΗ ΣΤΗΝ ΕΘΝΙΚΗ ΑΝΤΙΣΤΑΣΗ"// 36ο ΚΑΙ 29ο ΠΑΝΕΛΛΗΝΙΑ ΑΝΟΙΚΤΑ ΑΤΟΜΙΚΑ ΠΡΩΤΑΘΛΗΜΑ 2026 (OPEN & ΓΥΝΑΙΚΩΝ)// GROUP A1877
Aug – Sep 2026Swisschess-results.com
#9 in 2026Score 3½/9Opp avg 1920Start 1870
16ο ΠΑΠΑΝΑΣΤΑΣΙΟ» open ΣΚΑΚΙΣΤΙΚΟ ΤΟΥΡΝΟΥA 24 - 30 ΑΥΓΟΥΣΤΟΥ 2026 Α' ΟΜΙΛΟΣ1939
Aug 2026Swisschess-results.com
#3 in 2026Score 4/7Opp avg 1889Start 1870
2ο Καλοκαιρινό open Chess Square (Καθημερινό) 2026 Εναρξη 9/7/2026 18:301979
Jul 2026Swisschess-results.com
#2 in 2026Score 5/6Opp avg 1739Start 1904
1ο Καλοκαιρινό Open Chess Square 2026 (Καθημερινό) Εναρξη 29/6/2026 18:301704
Jun – Jul 2026Swisschess-results.com
#15 in 2026Score 3½/7Opp avg 1704Start 1954
ΑΝΟΙΞΙΑΤΙΚΟ open CHESS SQUARE (ΜΟΝΟ ΣΑΒΒΑΤΑ)1883
May – Jun 2026Swisschess-results.com
#8 in 2026Score 5/7Opp avg 1725Start 1940
197 OPEN ΣΟΑ (ΜΟΝΟ ΤΕΤΑΡΤΕΣ) ΕΙΣ ΜΝΗΜΗΝ ΙΔΡΥΤΗ ΦΙΛΙΠΠΑΚΗ ΝΙΚΟΥ1890
May – Jun 2026Swisschess-results.com
#7 in 2026Score 4/7Opp avg 1840Start 1940
28th Iraklio Chess Tournament - Athens Challenge 2026 GroupA Ατομικό Πρωτάθλημα Αττικής1743
Jun 2026Swisschess-results.com
#14 in 2026Score 4/9Opp avg 1786Start 1954
ΟΜΑΔΙΚΟ ΚΥΠΕΛΛΟ ΑΝΟΙΞΗΣ ΑΤΤΙΚΗΣ 2026 - 2η ΦΑΣΗ1909
Jun 2026Teamchess-results.com
#5 in 2026Score 2/3Opp avg 1784Start 1954
ΟΜΑΔΙΚΟ ΚΥΠΕΛΛΟ ΑΤΤΙΚΗΣ 2026—(1)
Apr – Jun 2026Teamchess-results.com
Score ½/1Opp avg 2000Start 1940
ΟΜΑΔΙΚΟ ΠΡΩΤΑΘΛΗΜΑ ΒΕΤΕΡΑΝΩΝ (S50) ΑΤΤΙΚΗΣ 20262445
Apr – Jun 2026Teamchess-results.com
Score 3/3Opp avg 1645Start 1940
ΟΜΑΔΙΚΟ ΚΥΠΕΛΛΟ ΑΝΟΙΞΗΣ ΑΤΤΙΚΗΣ 2026, ΒΟΡΕΙΟΣ ΟΜΙΛΟΣ—(1)
Apr – Jun 2026Teamchess-results.com
Score 0/1Opp avg 2000Start 1940
10th open Thomas Georgiou1898
Mar – May 2026Swissfederation source
#6 in 2026Score 4½/7Opp avg 1796Start 1884
196th Open SO Ampelokipon Mar 20261922
Mar – Apr 2026Swissfederation source
#4 in 2026Score 4/7Opp avg 1872Start 1884
2026 Team Championship of ESSNA - C Category2216
Jan – Mar 2026Swissfederation source
Best of 2026Score 8/9Opp avg 1880Start 1886
21st Siaperas Triantafyllos Open 20261854
Jan – Feb 2026Swissfederation source
#11 in 2026Score 5/7Opp avg 1696Start 1886
195th Open SO Ampelokipon Jan 20261854
Jan – Feb 2026Swissfederation source
#11 in 2026Score 4½/7Opp avg 1797Start 1886
New Year's Eve 2026 SE Herakliou1865
Jan 2026Swissfederation source
#10 in 2026Score 3/5Opp avg 1793Start 1886
Festive open Chess Square Nov 20251945
Nov – Dec 2025Swissfederation source
#7 in 2025Score 5½/7Opp avg 1715Start 1883
7th Stamatopoulos Open 20251725
Nov – Dec 2025Swissfederation source
#17 in 2025Score 3/7Opp avg 1725Start 1883
Attica Team Cup Spyros Bikos 20251856
Nov – Dec 2025Teamfederation source
#13 in 2025Score 3½/6Opp avg 1799Start 1883
ESSNA Autumn Team Cup 2025 North—(1)
Oct – Nov 2025Teamfederation source
Score 2/2Opp avg 1731Start 1904
Autumn open chess Square Sep 20251971
Sep – Nov 2025Swissfederation source
#5 in 2025Score 5/7Opp avg 1813Start 1927
194th Open SO Ampelokipon Sep 20251788
Sep – Oct 2025Swissfederation source
#15 in 2025Score 4/7Opp avg 1788Start 1927

Recent opponents · Classical

Antonios Georgantas Theodoros Chantzopoulos Konstantinos Papanikos Grigor Gkalstyan

Rated near Theodoros Sideris · Classical

World

#=55123Peter Wyss1874.2
#=55123Blaz Zupan1874.2
#=55123Theodoros Sideris1874.2
#=55123Kaushika Sridharan1874.2
#=55123Jos Vandamme1874.2

Greece

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