CChessStats

2026 Team Championship of ESSNA - C Category

Open SwissStandard

159 players participated in this 9-round tournament, held from 18 Jan 2026 to 22 Mar 2026 in Attica, Greece. 6 titled players. Top 10 Elo average was 2123, and top seed was Michail Vassis (🇬🇷 GRE, FM, 2330).

Theodoros Sideris (🇬🇷 GRE, 1884) won with 8.0/9, ahead of Markos Mastichiadis (8.0) and Vasilios Papageorgiou (8.0). Sideris shared the lead from round 2, winning on tie-break.

The biggest upset came in round 8: Nikolaos Karystianos (1465) beat Konstantinos Thomas (1714), a +249-point gap.

Location
🇬🇷Attica, Greece
Dates
18 Jan 2026 → 22 Mar 2026
Time control
Standard: 90min/40moves+30min/end+30sec increment per move starting from move 1
System
Swiss · 9 rounds
Top seed
🇬🇷FMMichail Vassis2330
Avg top 10
2,123
Participants
159
Titled players · 6
IM×1
FM×4
CM×1
Federations · 1 represented
🇬🇷Greece×133
Top 3

How it unfolded

Top 6 · 9 rounds

Tight race until R6; 4 players tied at 8.0/9, decided on Buchholz. Title race narrowed from 4 co-leaders at R4 to 4 at the finish.

Co-leaders
37
11
4
4
2
1
1
1
4
2.54.579R1R2R3R4R5R6R7R8R9
R6–R9 · LEAD HELD

Theodoros Sideris held the sole lead from R6 through R9 without losing it.

R9 · TIEBREAK CLUSTER

4 players finish on 8.0/9. Sideris takes the title on Buchholz Cut1 (33.5).

WIN STREAKS · 3 top finishers

Theodoros Sideris 5 wins (R1–R5)Vasilios Papageorgiou 6 wins (R4–R9)Markos Mastichiadis 5+3 wins (R1–R5, R7–R9)

Key matchups · top 4

Head-to-head between the four finishers

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7R8R9PtsBu C1BuSBPerfΔ
1Sideris, Theodoros1884GRE+23B+80B+37N+66B+75B=10B+59N+71B=15N8.033.535.529.252216+58.6
2Mastichiadis, Markos1524GRE+130B+4N+64B+13N+145B12N+107B+60B+32N8.032.032.026.001688+18.8
3Papageorgiou, Vasilios2019GRE+58N+45B63N+46B+14N+22B+101N+85N+59N8.030.031.028.002179+24.0
4Rompanos, Alexandros1596GRE+136N2B+141N+130B+60N+64N+13B+138N+114B8.021.021.013.001645-7.6
5Kostas, Panagiotis2143GREF+73N=69B+36N+41B+24B+90N+25B+70N7.528.530.026.252463+44.0
6Michail, Konstantinos1676GRE83B9B+61N+48B+42N+137B+113N+28B+148B7.025.025.016.501797+45.2
7Michas, Iasonas1719GREF+42N+125B=8N+43B+151B+110N+33B12N6.527.027.017.751724+4.8
8Talaverou, Vasiliki Viktoria1731GRE+42BF+150B=7B+51N+103N+33N+12BF6.526.026.022.751847+12.8
9Demestichas, Petros1870GRE=55B+6NF+61N+28BF+124B+42N+140B6.524.024.021.2519260.0
10Galanopoulos, Efraim1882GRE+101NF+59B+93N=50B=1N+80B=53B+152N6.522.522.515.002143+52.6
11Anastasopoulou, Andrianna1960GRE+92NFF+16B+47N+30N+102B+112N=44B6.522.022.020.002017+5.8
12Eleftheriou, Iasonas1530GRE+64B13NF+60B+153N+2B+137N8N+7B6.033.033.020.501626+22.0
13Sideropoulos, Georgios N1437GRE+138N+12BF2B+32N+130B4N+115B+60N6.031.031.015.001469-1.2
14Efthimiatos, Georgios1941GRE=18B+105N+46B+147N3B=104N=30B=15B+133B6.030.530.513.501895-7.2
15Raptakis, Solon1798GRE+46B+56B22B+134N+132NF+58B=14N=1B6.029.529.517.001926+21.4
16Mastorakou, Maria1684GRE=29N+67B+47N11N30B+102N+109B=77N+92B6.028.029.013.751742+11.6
17Tsimplidi, Charikleia1433GRE54B+62N+40B39B+91NF+65N+34B+131N6.025.025.017.002315+24.8
18Fotoglou, Ioannis1780GRE=14N+21B=94N26B+134N+135N+126B78B+139N6.021.021.09.751843+13.2
19Vassis, MichailFM2330GREF+24B+90N=84B+70N=41N+73B+69NF6.020.020.017.002342+3.4
20Bizirtsakis, Athanasios1725GRE+116N+132B+21N+142BF78B96N+139B+134B6.010.510.56.501788+10.0
21Sklavounos, Panayotis1835GRE+35B18N20B+94B=26BF+132N+74N+58B5.529.029.014.501879+12.0
22Synetos, Dionysios1840GRE+74B+58B+15N+63B=46B3NF+133NF5.526.026.016.252060+37.8
23Soukarie, Zorz1993GRE1N+135B+80N+74B+37N=58B+26NFF5.525.025.015.502038+18.4
24Gazis, EfstathiosFM2113GRE=70B19N+27B69N=36B5N+41B+90B+25N5.037.038.519.002097-4.2
25Korres, Evangelos1884GRE+133B=49B=52N72B+27N+81B+31N5N24B5.034.034.015.502044+37.0
26Nikoleris, Evangelos1856GRE+77N=104N=35B+18N=21N=56N23B+101BF5.030.030.017.001897+16.6
27Papadimitriou, Loukas2009GRE=36N=53N24N+101N25B+52N+93B41N+81N5.029.030.012.001997-6.4
28Filippou, Georgios1623GRE117N+38B+55NF9N+51N+140B6N+61B5.029.029.014.501670+13.2
29Flouri, Maria1570GRE=16B=128N30B+102N=79B44N+92B=47B+67N5.026.527.011.751606+7.2
30Karteri, Dimitra1804GREFF+29N=127B+16N11B=14N+102N+143N5.025.025.015.251873+11.0
31Alexakis, Dimitrios1945GRE+50N=82B=49N=53N+76B+101N25B=52NF5.024.524.513.252021+16.0
32FIDE 421740400+60N+130NFF13B+95N+?N+107N2B5.019.519.55.507220.0
33Liosis, Michail0GRE=103B=43N+144B+?NF+106N8B7N+124N5.019.519.54.0013890.0
34Moysiadou, Marina0GRE+91NF+65NF+?B+?N62B17N+39B5.018.018.09.0014880.0
35Gkekos, Ioannis1781GRE21NF=26N+149BF=126N+104N+97B+63N5.016.516.58.251917+20.6
36Karagiannis, AthanasiosIM2112GRE=27B+69N41B5B=24N+90B=86N+70B72N4.531.032.512.502061-6.0
37Karanikolas, Dimitrios2022GRE=71B=50N1B=80N23B=76N+133B+154B=52B4.527.527.57.001857-37.2
38Mastichiadis, Dimitrios1648GRE+57B28N+51NF+95N61N+48B=43NF4.525.025.014.001599-6.0
39Kampitsi, Kyriaki0GRE+131B=54N62B+17NF+91BF+65B34N4.522.022.012.2515100.0
40Ntala, Antigoni0GRE=62N+65B17N+?B?NF+91N+54BF4.517.017.09.5014700.0
41Boviatsis, Charalampos2021GRE+69NF+36N=70B5N=19B24N+27BF4.035.035.016.252153+24.8
42Sarris, Dimitrios M0GRE8N7B+124B+103N6B+?BF9B+106B4.029.029.02.509660.0
43Pristouris, Ioulios Stavros1529GRE+106N=33B57B+146B7N=48B=51N=38BF4.027.527.59.251440-22.8
44Goridari, Artemis1523GRE=68BFF+47B+131N+29BFF=11N4.018.018.013.251907+37.4
45Ter-Gevorkian, Giannis1867GRE+80N3N+76N+75B+135BFFFF4.015.015.07.002054+20.0
46Georgakopoulos, Vasilios1862GRE15N63B14N3N=22N+75N=105B=59B+71N3.536.537.59.751691-35.8
47Aggeletou, Fereniki1541GRE+127B79N16B44N11B+92N=68B=29N=102B3.529.530.06.501425-22.0
48Andreou, Jonas1521GREF+124N=103B6N+61B=43N38NF=57N3.527.027.07.751503-9.6
49Antoniadis, Anastasios1976GRE81B=25N=31B=59N+53B+93N66B50NF3.526.528.011.501863-29.0
50Dimitriou, Georgios1947GRE31B=37B119BF=10N=59B+71N+49BF3.526.026.013.001930-1.4
51Tziros, Charalampos1508GRE+144B+111N38B+125N8B28B=43BF85N3.524.524.53.501501-2.0
52Douros, Georgios1903GREFF=25BF+72N27B+82N=31B=37N3.524.024.011.752048+23.8
53Tsagkaropoulos, Spyridon2053GRE+93N=27B+82N=31B49NFF=10NF3.523.523.511.751980-10.2
54Mengouli, Foteini0GRE+17N=39B91NFFF+?N40N+62B3.519.519.511.2514700.0
55Fotoglou, Evangelos1461GRE=9NF28B+124N+103BFFF+156B3.516.516.54.751719+36.4
56Kaponis, Ioannis0GRE+104B15NFFF=26B+103N+143B99N3.514.514.54.5017690.0
57Roussos, Makarios1584GRE38NF+43NF+124BFF+146N=48B3.512.512.56.251561-3.2
58Papazahariou, Nikolaos1744GRE3B22N=75B+105B+118N=23N15N63B21N3.037.038.06.001685-13.4
59Koursaris, Nikolaos1831GREF=90N10N=49B+93B=50N1B=46N3B3.036.036.07.501829-1.8
60FIDE 541020073032BF+130B12N4B+136N+64B2N13B3.036.036.03.007650.0
61Siranidis, Petros1487GREF+108N6B9B48N+38B+106NF28N3.028.528.56.501428-12.8
62FIDE 421284120=40B17B+39N=91BF65B+34NF54N3.028.028.012.5012770.0
63Thomas, Theodoros Kon1884GREF+46N+3B22NFFF+58N35B3.025.025.014.501923+10.8
64Spantidakis, Georgios Panagiotis1497GRE12NF2N+141B+155N4B60NF+?B3.025.025.00.00794-44.4
65FIDE 5410255550F40N34B+131N?B+62N17B39N+91B3.024.524.54.5013430.0
66Lazaridis-Elmaloglou, Lazaros1880GREF+71NF1NFF+49NF+132B3.014.014.06.001985+12.2
67Mavromoustakou, Kyriaki1575GREF16N+128BF+157BF+77BF29B3.014.014.03.001691+32.0
68Karteri, Olga1820GRE=44N+92BFFF87B=47NF+109B3.012.012.06.251646-16.2
69Stefanopoulos, OrestisFM1944GRE41B36B=5N+24B100N86B+70N19B73N2.534.035.511.251939-3.2
70Pantelidis, Ioannis2069GRE=24N=100B=84N=41N19B=73N69B36N5B2.534.035.57.501921-36.2
71Panagiotakos, Petros1755GRE=37N66B+83N+135N74BF50B1N46B2.527.027.04.251669-18.6
72Vassis, Anastasios2144GREF=76NF+25N52BFFF+36B2.523.023.010.752054-18.8
73Zografos, AchilleasCM2034GREF5BF=90B=86N=70B19NF+69B2.522.022.05.502035-1.2
74Goridaris, Nikolaos1708GRE22NF=105B23N+71N+159NF21B94N2.521.521.53.001685-5.4
75Konstantinidis, Dimitrios Gk0GRE+105B+142N=58N45N1N46BFFF2.519.519.52.5016400.0
76Mytilinis, Sokratis1927GRE+158N=72B45B=81B31N=37BFFF2.518.018.04.501900-7.2
77Kostelidou, Despoina1707GRE26B+102N+112BFFF67N=16BF2.516.016.05.001609-12.6
78Samouridis, Vasileios1595GREFFFFF+20NF+18N=98B2.513.513.512.752023+33.8
79Kotioni, Christina1569GREF+47BF+92B=29NFFFF2.510.010.07.501749+18.4
80Lyrakis, Stavros1884GRE45B1N23B=37BF+83B10NF=93B2.032.032.05.001699-34.0
81Haritos, Hristos1943GRE+49NFF=76N=90B25NFF27B2.017.517.55.501891-7.4
82Nanopoulos, Stavros1919GREF=31N53BF+101NF52B=93NF2.014.514.54.251819-13.6
83Orfanidis, Efstathios1578GRE+6N+118B71BFF80NFFF2.014.014.08.001746+34.0
84Margaritis, Fotios2075GRE+90NF=70B=19NFFFFF2.014.014.05.752244+13.0
85FIDE 5410208390+108NFFFFFF3B+51B2.012.512.54.5017600.0
86Haliamanis, GeorgiosFM2109GREFFFF=73B+69N=36BFF2.09.59.56.002155+3.6
87Zahilas, Loukas N.1965GREFFFFF+68N+134BFF2.03.03.03.002620+6.2
88Giannelos, Alexandros0GREF+137NFFF+110BFF89N2.03.03.01.006830.0
89Karystianos, Nikolaos1465GREFFFFFFF+125N+88B2.02.52.52.502516+31.6
90Pessiridis, Isaak1975GRE84B=59B19B=73N=81N36N5B24NF1.534.036.03.751820-30.8
91Papadopoulou, Eftychia1456GRE34B120N+54B=62N17B39N40BF65N1.530.530.55.00624-24.8
92Chatzinikolaou, Nina Loukia0GRE11B68N=102B79NF47B29N+127B16N1.528.028.01.0012370.0
93Hristodoulou, Georgios1767GRE53BF=101B10B59N49B27N=82B=80N1.526.526.52.501669-20.4
94Tsifetakis, Panagiotis1806GREFF=18B21N97BFFF+74B1.515.515.55.501686-14.0
95Vourtsanis, Filippos Georgios0GREF=?BF+107B38B32BFFF1.510.510.51.008210.0
96Iliopoulos, Georgios1757GREFFFF=98BF+20BFF1.59.59.56.751928+8.8
97Eleftheriou, Georgios1789GREFFFF+94NFF35N=101N1.57.57.52.001791+1.0
98Leivadaros, Antonios1744GREFFFF=96NFF=99B=78N1.55.55.52.751666-4.0
99FIDE 5410255710FFFFFFF=98N+56B1.55.05.04.2517440.0
100Tegelidis, Petros2031GREF=70NFF+69BFFFF1.55.05.03.752200+8.6
101Iliadis, Georgios1778GRE10B121N=93N27B82B31B3B26N=97B1.034.535.51.501522-96.0
102Pessiridi, Christiana1474GRE109N77B=92N29BF16B11N30B=47N1.031.031.02.501255-26.2
103Stavrianakos, Nikolaos0GRE=33N?N=48N42B55N8B56BF?B1.029.529.54.2512930.0
104Giannakis, Ioannis1710GRE56N=26BFFF=14B35BFF1.019.519.55.501723+1.6
105Brebos, Panayotis1585GRE75N14B=74N58NF122N=46NFF1.018.518.53.001554-9.2
106FIDE 42128404043BFFF+110N33B61BF42N1.017.017.01.006990.0
107FIDE 421958370F115N108N95NFF2N32B+130N1.017.017.00.007690.0
108FIDE 541020324085B61B+107BFFFFFF1.010.510.51.006730.0
109Tzemi, Aggeliki - Athina1555GRE+102BFFFFF16NF68N1.010.010.01.001534-2.4
110FIDE 5410203320FFFF106B88N7B+124B?B1.010.010.00.509040.0
111Kontis, Ioannis0GREF51BFF+?NFFFF1.010.010.00.007010.0
112Mourtzouni, Maria1500GREFF77NFF+127BF11BF1.09.59.50.501004-6.2
113Floros, Spyridon K1455GREF=125BF=129NFF6BFF1.08.08.00.501515+11.2
114Koutsos, Loukas1461GREFFFFFFF+155B4N1.08.08.00.00897-10.4
115FIDE 421922500F+107BFFFFF13NF1.07.07.01.006750.0
116Sideris, Vasilios1610GRE20BFFFFF+142NFF1.06.06.00.00926-7.0
117Doukas, Evangelos1775GRE+28BFFFFFFFF1.05.05.05.002434+17.6
118Halikias, Alexios1671GREF83N+132NF58BFFFF1.05.05.00.001493-14.0
119Agouridis, Aris2083GREFF+50NFFFFFF1.03.53.53.502738+6.2
120FIDE 421871410F+91BFFFFFFF1.01.51.51.5015350.0
121Kostelidis, Georgios1710GREF+101BFFFFFFF1.01.01.01.002578+12.2
122Hreppas, Ilias1717GREFFFFF+105BFFF1.01.01.01.002387+6.4
123Athanasakopoulos, Alexandros1747GRE+147BFFFFFFFF1.00.00.00.002390+6.2
124FIDE 421630640=?N48B42N55B57NF9N110N33B0.527.027.00.008260.0
125Thomas, Konstantinos1714GREF=113N7N51BFFF89BF0.513.013.00.501208-96.8
126Petropoulos, Filaretos1752GREFFFFF=35B18NFF0.511.011.02.501592-8.2
127Diakoumopoulou, Aikaterini0GRE47NFF=30NF112NF92NF0.511.011.02.5013420.0
128Gypari, Alexandra1675GREF=29B67NFFFFFF0.58.08.02.501380-15.6
129Kampitsis, Foivos1525GREFFF=113BFFFFF0.52.02.00.501430-5.2
130FIDE 4214959202N32B60N4NF13N?BF107B0.031.031.00.007800.0
131FIDE 541010418039NFF65B44BFFF17B0.025.025.00.006740.0
132Vathis, Konstantinos1532GREF20N118BF15BF21BF66N0.021.521.50.00979-40.4
133Kiseliov, Sergkei1793GRE25NFFFFF37N22B14N0.021.021.00.001122-53.2
134FIDE 5410255630FF?B15B18BF87N?N20N0.020.020.00.009710.0
135Manolas, Stavros1602GREF23NF71B45N18BFFF0.018.018.00.001049-33.6
136FIDE 54102030804BFFFF60BFFF0.017.017.00.008970.0
137FIDE 5410011840F88BFFF6N12BFF0.015.015.00.007970.0
138FIDE 541021266013BFFFFFF4BF0.014.014.00.007860.0
139Mengoulis, Konstantinos1703GREFFFFFFF20N18B0.012.012.00.00954-15.6
140FIDE 5410177650FFFFFF28NF9N0.011.511.50.009800.0
141Thomas, Alexandros0GREFF4B64NFFFFF0.011.011.00.008970.0
142FIDE 5410208550F75BF20NFF116BFF0.09.59.50.008720.0
143Argyropoulos, Georgios0GREFFFFFFF56N30B0.08.58.50.0010040.0
144Kostelidis, Konstantinos0GRE51NF33NFFFFFF0.08.58.50.007010.0
145FIDE 5410255800FFFF2NFFFF0.08.08.00.007690.0
146FIDE 421637570FFF43NFFF57BF0.07.57.50.007530.0
147Goridaris, Panagiotis1590GRE123NFF14BFFFFF0.07.07.00.001038-8.4
148Badredin, Panagiotis1899GREFFFFFFFF6N0.07.07.00.00877-15.6
149Lykourinos, Vasileios0GREFFF35NFFFFF0.06.56.50.009890.0
150Pandis, Theodoros Dimitrios0GREFF8NFFFFFF0.06.56.50.009560.0
151FIDE 5410105150FFFFF7NFFF0.06.56.50.009040.0
152Kalitsis, Nikolaos1986GREFFFFFFFF10B0.06.56.50.001079-13.0
153FIDE 421956670FFFF12BFFFF0.06.06.00.007170.0
154Vathis, Isidoros1593GREFFFFFFF37NF0.04.54.50.001193-1.6
155FIDE 5410042560FFFF64BFF114NF0.04.04.00.007160.0
156Mastichiadis, Emmanouil1664GREFFFFFFFF55N0.03.53.50.00661-30.4
157Tsomkalidou, Foteini1459GREFFFF67NFFFF0.03.03.00.00775-6.8
158Stathopoulos, Fotios1813GRE76BFFFFFFFF0.02.52.50.001137-6.6
159Papadopoulos, Georgios1710GREFFFFF74BFFF0.02.52.50.00908-10.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets