2026 National Youth U18 Championships - open

Open SwissStandard

47 players participated in this 9-round tournament, held from 02 Jan 2026 to 08 Jan 2026 in Athens, Greece. 3 titled players. Top 10 Elo average was 2145, and top seed was Stefanos Kazantzoglou (🇬🇷 GRE, FM, 2353).

Stefanos Kazantzoglou (🇬🇷 GRE, FM, 2353) won with 7.5/9, ahead of Apostolos Lafkidis (7.0) and Charalampos Theodoridis (6.5). Kazantzoglou took the lead from round 5.

The biggest upset came in round 2: Georgios Bervanakis (1523) beat Emmanouil Mavridis (2138), a +615-point gap.

Location

🇬🇷Athens, Greece

Dates

02 Jan 2026 → 08 Jan 2026

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇬🇷FMStefanos Kazantzoglou2353

Avg top 10

2,145

Participants

Titled players · 3

FM×1

CM×2

Federations · 1 represented

🇬🇷Greece×46

Top 3

🥇
FMStefanos Kazantzoglou
🇬🇷GRE·2353
7.5pts·2338perf-0.4
🥈
Apostolos Lafkidis
🇬🇷GRE·2009
7.0pts·2256perf+116.0
🥉
Charalampos Theodoridis
🇬🇷GRE·2058
6.5pts·2134perf+43.6

How it unfolded

Top 6 · 9 rounds

FM Stefanos Kazantzoglou led from R5; +0.5-point edge over the runner-up.

Co-leaders

Kazantzoglou7.5Lafkidis7Theodoridis6.5Bougas6.5Zavrakidis6Mavridis6— ex-leaders:Balafoutasled R4, #31

R5 · LEADER CHANGE05 Jan

FM Stefanos Kazantzoglou takes the sole lead (4.5/5).

R7 · HEAD-TO-HEAD · WINNER VS 2ND

FM Stefanos Kazantzoglou drew with Apostolos Lafkidis (White).

WIN STREAKS · 2 top finishers

FM Stefanos Kazantzoglou 3 wins (R1–R3)Charalampos Theodoridis 3 wins (R6–R8)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1FMStefanos Kazantzoglou	*	½	½	—
2Apostolos Lafkidis	½	*	—	—
3Charalampos Theodoridis	½	—	*	—
4Georgios Bougas	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Kazantzoglou, StefanosFM	2353	GRE	+20N	+14B	+8N	=13B	+11B	+5N	=2B	+9N	=3N	7.5	45.5	50.5	41.25	2338	-0.4
2	Lafkidis, Apostolos	2009	GRE	+40N	=12B	+38N	+16B	−5N	+17B	=1N	+8B	+9N	7.0	42.5	45.5	33.25	2256	+116.0
3	Theodoridis, Charalampos	2058	GRE	=35B	+32N	=19B	+18N	−8B	+26N	+5B	+11N	=1B	6.5	42.5	46.0	32.50	2134	+43.6
4	Bougas, Georgios	2081	GRE	+31N	+39B	+9B	−11N	−13N	+29B	=10N	+12B	+8N	6.5	39.5	42.5	29.75	2167	+49.2
5	Vassis, Anastasios	2152	GRE	=15B	=18N	+23B	+14N	+2B	−1B	−3N	+21N	+11B	6.0	46.0	51.0	32.00	2124	-8.0
6	Zavrakidis, Nikolaos	2001	GRE	=26B	+36N	=18B	+25N	=16B	−9N	=15B	+23B	+12N	6.0	40.0	43.5	28.25	2043	+23.2
7	Mavridis, Emmanouil	2138	GRE	=34N	−38B	+40N	+31B	=29N	+10B	−12N	+27B	+13N	6.0	34.5	37.5	25.75	2042	-28.4
8	Merkouropoulos, Dionysios	2086	GRE	+22N	+30B	−1B	+27N	+3N	=12B	+11B	−2N	−4B	5.5	47.0	51.0	27.50	2129	+22.0
9	Boutikos, EleftheriosCM	2170	GRE	+29N	+27B	−4N	+17B	=10N	+6B	+13N	−1B	−2B	5.5	47.0	51.0	27.25	2132	-14.0
10	Anagnostopoulos, Panagiotis	2084	GRE	=32B	=15N	+22B	+30N	=9B	−7N	=4B	+18N	=16B	5.5	42.0	46.0	27.00	2044	-12.4
11	Balafoutas, Alexandros	2048	GRE	+24N	+47B	+12N	+4B	−1N	+13B	−8N	−3B	−5N	5.0	47.0	47.0	21.50	2098	+22.0
12	Mylonakis, IoannisCM	2199	GRE	+25B	=2N	−11B	+32N	+19B	=8N	+7B	−4N	−6B	5.0	46.0	50.0	26.25	2047	-66.0
13	Ntounias, Ioannis	2129	GRE	+23B	=19N	+21B	=1N	+4B	−11N	−9B	+30N	−7B	5.0	45.5	49.5	26.75	2099	-14.0
14	Makrylakis, Iason	1976	GRE	+37B	−1N	+15B	−5B	+34N	=18N	=16B	=22B	=20N	5.0	42.0	45.5	22.00	1982	+1.2
15	Tampakis, Vasileios	1840	GRE	=5N	=10B	−14N	+40B	+27B	=16N	=6N	=17B	=22N	5.0	42.0	45.0	23.75	2015	+79.2
16	Kyriakidis, Orestis	2039	GRE	+45B	=21N	+33B	−2N	=6N	=15B	=14N	=20B	=10N	5.0	42.0	43.0	20.25	1980	-27.2
17	Palaiologou, Apostolos	2011	GRE	=36B	+35N	+26B	−9N	+21B	−2N	=18B	=15N	=24B	5.0	40.5	44.0	22.25	1906	-44.4
18	Giannoulis, Grigorios	1913	GRE	+43N	=5B	=6N	−3B	+35N	=14B	=17N	−10B	+39N	5.0	40.5	42.5	19.50	1959	+26.8
19	Soukarie, Zorz	1991	GRE	+46N	=13B	=3N	=29B	−12N	=20B	=22N	+33B	=28B	5.0	38.5	39.0	19.00	1990	+2.4
20	Kiryttopoulos, Ioannis	1893	GRE	−1B	−26N	+37B	+45N	=24B	=19N	+41B	=16N	=14B	5.0	38.0	39.0	17.00	1891	-1.2
21	Armaos, Michail	1975	GRE	+42N	=16B	−13N	+38B	−17N	=23B	+32N	−5B	+29N	5.0	37.0	39.5	18.50	1925	-16.4
22	Tsitimakis, Periklis	1812	GRE	−8B	+37N	−10N	+43B	=30B	+33N	=19B	=14N	=15B	5.0	37.0	39.0	18.50	1926	+54.0
23	Chompas, Vasileios	1818	GRE	−13N	+42B	−5N	+44B	=33B	=21N	+25B	−6N	+30B	5.0	37.0	38.5	17.25	1944	+57.6
24	Nikolopoulos, Nikolaos S	1727	GRE	−11B	+44N	−27N	+28B	=20N	=30B	=29N	+34B	=17N	5.0	35.5	37.0	18.50	1934	+92.0
25	Alexopoulou, Eleni Th	1880	GRE	−12N	+46B	+47N	−6B	−26N	+31B	−23N	+41B	+33N	5.0	31.0	31.0	10.50	1824	-23.2
26	Doukas, Evangelos	1648	GRE	=6N	+20B	−17N	=33N	+25B	−3B	−30N	+31B	=27N	4.5	40.0	43.5	21.00	1934	+108.8
27	Lampropoulos, Pavlos	1962	GRE	+41B	−9N	+24B	−8B	−15N	+38N	+39B	−7N	=26B	4.5	37.5	40.0	15.75	1834	-50.0
28	Tsamtsouris, Efthymios	2018	GRE	−39N	−40B	+46N	−24N	=38B	+42B	+36N	=29B	=19N	4.5	29.0	29.5	12.50	1731	-116.8
29	Benakis, Ioannis	1842	GRE	−9B	+45N	+43B	=19N	=7B	−4N	=24B	=28N	−21B	4.0	39.5	40.5	13.25	1880	+17.2
30	Demestichas, Petros	1925	GRE	+44B	−8N	+39B	−10B	=22N	=24N	+26B	−13B	−23N	4.0	38.5	40.0	14.00	1799	-54.0
31	Vasileiou, Evangelos Symeon	1739	GRE	−4B	=41N	+36B	−7N	=32B	−25N	+35B	−26N	+38B	4.0	36.0	38.5	13.25	1745	-4.0
32	Patrinos, Ektor	1753	GRE	=10N	−3B	+41N	−12B	=31N	+35B	−21B	F	+43N	4.0	35.0	37.0	12.75	1850	+33.6
33	Kiryttopoulos, Panagiotis Aris	1932	GRE	=38N	+34B	−16N	=26B	=23N	−22B	+43N	−19N	−25B	3.5	36.0	38.0	11.75	1711	-99.2
34	Kartsakis, Ioannis	1825	GRE	=7B	−33N	=35B	+39N	−14B	−41N	+38B	−24N	=42N	3.5	31.5	34.0	12.00	1692	-64.4
35	Terzakis, Georgios	1736	GRE	=3N	−17B	=34N	+47B	−18B	−32N	−31N	=43B	+46N	3.5	30.5	30.5	6.50	1662	-34.4
36	Estiadis, Georgios	1717	GRE	=17N	−6B	−31N	=41B	=43N	+46B	−28B	+40N	F	3.5	27.5	27.5	8.25	1729	-1.6
37	Borisov, Filippos	1628	GRE	−14N	−22B	−20N	=46B	+47N	−43B	+44N	=42B	=41N	3.5	24.0	24.0	4.25	1546	-39.2
38	Bervanakis, Georgios	1523	GRE	=33B	+7N	−2B	−21N	=28N	−27B	−34N	+44B	−31N	3.0	38.0	39.5	11.50	1719	+64.4
39	Tzimas, Konstantinos	1720	GRE	+28B	−4N	−30N	−34B	+44N	+40B	−27N	F	−18B	3.0	35.0	36.5	9.00	1779	+16.8
40	Matthaiou, Theodoros	1709	GRE	−2B	+28N	−7B	−15N	=42B	−39N	+46N	−36B	=44N	3.0	33.0	33.5	7.00	1671	-24.8
41	Plakas, Dias	1568	GRE	−27N	=31B	−32B	=36N	F	+34B	−20N	−25N	=37B	2.5	33.0	34.0	9.00	1658	+24.4
42	Kolliopoulos, Georgios	1615	GRE	−21B	−23N	−45B	F	=40N	−28N	+47B	=37N	=34B	2.5	25.5	25.5	5.00	1583	-15.2
43	Alexopoulos, Filippos	1484	GRE	−18B	F	−29N	−22N	=36B	+37N	−33B	=35N	−32B	2.0	32.0	32.0	7.00	1587	+30.4
44	Kolliopoulos, Vasilis	1493	GRE	−30N	−24B	F	−23N	−39B	+47N	−37B	−38N	=40B	1.5	26.5	26.5	1.50	1295	-46.0
45	Chatzipavlou, Odysseas	1722	GRE	−16N	−29B	+42N	−20B	F	F	F	F	F	1.0	19.0	19.0	2.50	1654	-15.2
46	Giakamozis, Apostolos	1647	GRE	−19B	−25N	−28B	=37N	F	−36N	−40B	F	−35B	0.5	28.0	28.0	1.75	1389	-64.0
47	FIDE 541017684	0	—	F	−11N	−25B	−35N	−37B	−44B	−42N	F	F	0.0	21.5	21.5	0.00	934	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Lafkidis, ApostolosGRE
+116.0
7.0 pts · #2
2Doukas, EvangelosGRE
+108.8
4.5 pts · #24
3Nikolopoulos, Nikolaos SGRE
+92.0
5.0 pts · #17

Top rating losers

1Tsamtsouris, EfthymiosGRE
-116.8
4.5 pts · #25
2Kiryttopoulos, Panagiotis ArisGRE
-99.2
3.5 pts · #33
3Mylonakis, IoannisCMGRE
-66.0
5.0 pts · #16

Biggest upsets

R2+615 Elo gap
Bervanakis, Georgios1523 beat Mavridis, Emmanouil2138
R2+309 Elo gap
Matthaiou, Theodoros1709 beat Tsamtsouris, Efthymios2018
R1+298 Elo gap
Tzimas, Konstantinos1720 beat Tsamtsouris, Efthymios2018