10th open Korinthou SAK Argonaftis

Open SwissStandard

62 players participated in this 6-round tournament, held from 27 Dec 2025 to 29 Dec 2025 in Korinthos, Greece. 3 titled players from 2 federations. Top 10 Elo average was 2094, and top seed was Georgios Papadopoulos (🇬🇷 GRE, FM, 2379).

Michail Vassis (🇬🇷 GRE, FM, 2310) won with 5.5/6, ahead of Georgios Papadopoulos (5.0) and Stefanos Kazantzoglou (5.0). Vassis won solo starting round 5.

The biggest upset came in round 3: Areti Xynidi (1665) beat Efthymios Tsamtsouris (2032), a +367-point gap.

Location

🇬🇷Korinthos, Greece

Dates

27 Dec 2025 → 29 Dec 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 6 rounds

Top seed

🇬🇷FMGeorgios Papadopoulos2379

Avg top 10

2,094

Participants

Titled players · 3

FM×3

Federations · 2 represented

🇬🇷Greece×59

🇺🇦Ukraine×1

Top 3

🥇
FMMichail Vassis
🇬🇷GRE·2310
5.5pts·2417perf+12.2
🥈
FMGeorgios Papadopoulos
🇬🇷GRE·2379
5.0pts·2359perf+1.8
🥉
FMStefanos Kazantzoglou
🇬🇷GRE·2274
5.0pts·2248perf+4.4

How it unfolded

Top 6 · 6 rounds

FM Michail Vassis led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders

Vassis5.5Kazantzoglou5Papadopoulos5Kazakis5Zouroufidis4.5Sidiropoulos4.5

R5–R6 · LEAD HELD

FM Michail Vassis held the sole lead from R5 through R6 without losing it.

WIN STREAKS · 3 top finishers

FM Michail Vassis 5 wins (R1–R5)FM Stefanos Kazantzoglou 3 wins (R1–R3)FM Georgios Papadopoulos 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1FMMichail Vassis	*	—	1	½
2FMStefanos Kazantzoglou	—	*	0	—
3FMGeorgios Papadopoulos	0	1	*	—
4Mattheos Konstantinos Kazakis	½	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Vassis, MichailFM	2310	GRE	+42B	+21N	+8B	+5N	+2B	=4N	5.5	22.0	24.0	21.50	2417	+12.2
2	Papadopoulos, GeorgiosFM	2379	GRE	+55N	+17B	+25N	+3B	−1N	+10B	5.0	21.5	23.0	17.50	2359	+1.8
3	Kazantzoglou, StefanosFM	2274	GRE	+45N	+16B	+27N	−2N	+36B	+9N	5.0	18.5	20.5	15.50	2248	+4.4
4	Kazakis, Mattheos Konstantinos	1952	GRE	=54N	+28B	+46N	+19B	+7N	=1B	5.0	18.0	19.5	16.00	2101	+46.8
5	Sidiropoulos, Vasilis	2031	GRE	+47N	+13B	+11N	−1B	+20N	=6B	4.5	21.5	23.5	15.75	2047	+3.8
6	Zouroufidis, Konstantinos	1878	GRE	+39N	−35B	+29N	+11B	+18N	=5N	4.5	17.5	20.0	15.25	1898	+10.4
7	Zavrakidis, Nikolaos	2024	GRE	+30B	+22N	=14B	+10N	−4B	=8N	4.0	20.5	23.5	14.50	1926	-22.4
8	Patanas, Marios	1776	GRE	+32N	+15B	−1N	=35B	+26N	=7B	4.0	19.5	22.0	13.25	1942	+24.6
9	Bardis, Harilaos-Panagiotis	1972	GRE	+26N	−11B	+45N	+27B	+13N	−3B	4.0	19.0	21.0	12.00	1908	-6.8
10	Lekkas, Anastasios	1992	GRE	+29N	+24B	+35N	−7B	+25N	−2N	4.0	18.5	21.0	12.00	2003	+6.4
11	Kotovos, Konstantinos	1719	GRE	+52B	+9N	−5B	−6N	+44B	+25B	4.0	18.0	20.0	11.00	1927	+53.2
12	Kiryttopoulos, Ioannis	1954	GRE	+43B	=23N	−19B	+21N	+46B	=14N	4.0	16.5	18.5	11.25	1842	-28.4
13	Karavasilis, Athanasios	1746	GRE	+44B	−5N	+34B	+49N	−9B	+33N	4.0	16.5	18.5	10.00	1779	+5.0
14	Diakoumeas, Aristofanis	1708	GRE	+60N	+56B	=7N	−20B	+19N	=12B	4.0	16.5	16.5	9.00	1985	+34.8
15	Tsamtsouris, Efthymios	2032	GRE	+37B	−8N	−42N	+28B	+30B	+24N	4.0	16.0	18.0	12.00	1807	-52.4
16	Nikitakis, Ioannis	1778	GRE	+53B	−3N	+48B	−18N	+43B	+36N	4.0	15.0	17.0	8.50	1799	+4.4
17	Karvountzis, Ioannis Chrysostomos	1819	GRE	+33B	−2N	+43B	−36N	+48B	+42N	4.0	14.5	16.5	9.00	1816	+0.4
18	Asvestopoulos, Sergios	1682	GRE	+50N	−20B	+32N	+16B	−6B	=22N	3.5	18.5	20.5	10.75	1737	+14.4
19	Kalonomos, Ioannis	1822	GRE	=28N	+54B	+12N	−4N	−14B	+35B	3.5	18.5	20.0	9.50	1783	-6.0
20	Skarlas, Vasileios	1838	GRE	F	+18N	+23B	+14N	−5B	=31N	3.5	18.5	18.5	12.50	1973	+35.6
21	Kakogiannis, Panayotis	1785	GRE	+38N	−1B	=26N	−12B	+54N	+40B	3.5	17.5	19.0	8.00	1759	-3.0
22	Patrinos, Ektor	1743	GRE	+57N	−7B	+39N	−25B	+29N	=18B	3.5	16.0	17.0	8.25	1729	-3.1
23	Matthaiou, Theodoros	1719	GRE	+41N	=12B	−20N	−26B	+38B	+37N	3.5	15.5	18.0	9.50	1685	-8.8
24	Gialelis, Konstantinos	1732	GRE	+51B	−10N	+44B	=31N	+40B	−15B	3.5	15.5	17.5	8.00	1821	+19.6
25	Nikolakopoulos, Leonidas Marios	1846	GRE	+34B	+61N	−2B	+22N	−10B	−11N	3.0	19.5	19.5	6.50	1766	-21.6
26	Triantafyllaki, Sofia	1541	GRE	−9B	+52N	=21B	+23N	−8B	=46N	3.0	17.0	19.0	8.25	1710	+42.8
27	Kalliantasis, Serafeim	1722	GRE	+59N	+31B	−3B	−9N	−33B	+48N	3.0	17.0	17.0	5.00	1739	-0.6
28	Korogonas, Georgios	1494	GRE	=19B	−4N	=37B	−15N	+62N	+47B	3.0	17.0	17.0	5.00	1622	+16.4
29	Zervas, Dionysios	1590	GRE	−10B	+51N	−6B	+53N	−22B	+44N	3.0	16.0	18.0	6.00	1599	-3.6
30	Onipko, Kateryna	1601	UKR	−7N	+57B	−31N	+32B	−15N	+49B	3.0	16.0	17.0	6.00	1664	+1.6
31	Kiryttopoulos, Panagiotis Aris	1975	GRE	F	−27N	+30B	=24B	+35N	=20B	3.0	15.5	18.0	9.00	1791	-40.8
32	Karsiotis, Nikolaos	1451	GRE	−8B	+37N	−18B	−30N	+61B	+43N	3.0	15.0	15.0	4.50	1581	+30.0
33	Kostaras, Georgios	1479	GRE	−17N	−55B	+59N	+45B	+27N	−13B	3.0	14.5	14.5	5.00	1653	+39.6
34	Panagopoulos, Christos Panagiotis	1497	GRE	−25N	+50B	−13N	=55B	=47N	+45B	3.0	13.0	14.5	5.75	1644	+25.6
35	Panagopoulos, Athanasios I	1698	GRE	+62B	+6N	−10B	=8N	−31B	−19N	2.5	19.0	19.0	6.50	1740	+7.6
36	Nikolopoulos, Nikolaos S	1717	GRE	F	=49N	+61B	+17B	−3N	−16B	2.5	15.0	15.0	5.00	1778	+5.6
37	Zervas, Christos	1650	GRE	−15N	−32B	=28N	+59B	+58N	−23B	2.5	14.5	14.5	2.50	1353	-57.6
38	Xynidis, Maximos	1472	GRE	−21B	F	+41N	=47B	−23N	+50B	2.5	13.5	15.5	5.50	952	-13.2
39	Alepoudeas, Dimitrios	1506	GRE	−6B	+62N	−22B	−44N	=41B	+58N	2.5	13.5	13.5	2.25	926	-29.6
40	Kiryttopoulou, Eleonora Kaisa	1549	GRE	F	+59B	=56N	+54B	−24N	−21N	2.5	13.0	13.0	2.25	1660	+17.2
41	Kaliskami, Sophia	0	GRE	−23B	−43N	−38B	+51N	=39N	+54B	2.5	12.5	14.0	4.75	1409	0.0
42	Xynidi, Areti	1665	GRE	−1N	F	+15B	F	+49N	−17B	2.0	18.0	18.0	6.00	1847	+21.2
43	Di Giorgio, Victor	1538	GRE	−12N	+41B	−17N	+57B	−16N	−32B	2.0	17.5	18.5	3.50	950	-44.8
44	Zavrakidis, Charalampos	1414	GRE	−13N	+47B	−24N	+39B	−11N	−29B	2.0	17.0	19.0	4.50	1420	-33.2
45	Chronopoulos, Panagiotis Th	1659	GRE	−3B	+53N	−9B	−33N	+52B	−34N	2.0	17.0	19.0	4.00	953	-67.2
46	Sellis, Charalampos	1712	GRE	=49B	+58N	−4B	F	−12N	=26B	2.0	15.5	16.5	3.50	1535	-26.0
47	Drougkas, Ioannis	1649	GRE	−5B	−44N	+52B	=38N	=34B	−28N	2.0	15.0	17.0	4.75	1370	0.0
48	Zouroufidis, Ifikratis	1509	GRE	−56N	+60B	−16N	+50B	−17N	−27B	2.0	14.5	14.5	2.00	1006	-12.6
49	Lekkas, Dimitrios NA	0	GRE	=46N	=36B	+55N	−13B	−42B	−30N	2.0	13.5	15.0	3.75	1561	0.0
50	Patrinos, Filippos	0	GRE	−18B	−34N	+51B	−48N	+53B	−38N	2.0	13.0	15.0	4.00	739	0.0
51	Asvestopoulou, Melina	0	GRE	−24N	−29B	−50N	−41B	+59N	+60B	2.0	11.0	11.0	0.00	864	0.0
52	Di Giorgio, Nikolaos	0	GRE	−11N	−26B	−47N	+60B	−45N	+61B	2.0	11.0	11.0	0.00	833	0.0
53	Kazantzoglou, Aristotelis	1454	GRE	−16N	−45B	+60N	−29B	−50N	+62B	2.0	11.0	11.0	0.00	876	0.0
54	Zervas, Spyridon	1537	GRE	=4B	−19N	+58B	−40N	−21B	−41N	1.5	17.0	18.0	3.50	1450	-16.4
55	Kazantzoglou, Nikolaos	1675	GRE	−2B	+33N	−49B	=34N	F	F	1.5	13.0	13.0	4.50	1684	-1.2
56	Nakos, Spyridon-Vasileios	1930	GRE	+48B	−14N	=40B	F	F	F	1.5	10.5	10.5	3.25	1598	-44.0
57	FIDE 541021185	0	—	−22B	−30N	+62B	−43N	F	F	1.0	8.5	8.5	0.00	833	0.0
58	Skarla, Maria Eleni	0	GRE	F	−46B	−54N	+61N	−37B	−39B	1.0	8.5	8.5	0.00	801	0.0
59	Chaniotis, Antonios	0	GRE	−27B	−40N	−33B	−37N	−51B	F	0.0	13.0	13.0	0.00	800	0.0
60	Mouratoglou, Andreas	0	GRE	−14B	−48N	−53B	−52N	F	−51N	0.0	12.0	12.0	0.00	812	0.0
61	FIDE 42198712	0	—	F	−25B	−36N	−58B	−32N	−52N	0.0	11.5	11.5	0.00	868	0.0
62	Niarros, Michail Panagiotis	0	GRE	−35N	−39B	−57N	F	−28B	−53N	0.0	11.0	11.0	0.00	768	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Kotovos, KonstantinosGRE
+53.2
4.0 pts · #21
2Kazakis, Mattheos KonstantinosGRE
+46.8
5.0 pts · #4
3Triantafyllaki, SofiaGRE
+42.8
3.0 pts · #26

Top rating losers

1Chronopoulos, Panagiotis ThGRE
-67.2
2.0 pts · #53
2Zervas, ChristosGRE
-57.6
2.5 pts · #46
3Tsamtsouris, EfthymiosGRE
-52.4
4.0 pts · #12

Biggest upsets

R3+367 Elo gap
Xynidi, Areti1665 beat Tsamtsouris, Efthymios2032
R2+256 Elo gap
Patanas, Marios1776 beat Tsamtsouris, Efthymios2032
R2+253 Elo gap
Kalliantasis, Serafeim1722 beat Kiryttopoulos, Panagiotis Aris1975