CChessStats

24th PAO open Sep 2025

Open SwissStandard

24 players participated in this 7-round tournament, held from 19 Sept 2025 to 31 Oct 2025 in Athens, Greece. Top 10 Elo average was 1809, and top seed was Konstantinos Ignatiadis (🇬🇷 GRE, 1991).

Theodoros Ignatiadis (🇬🇷 GRE, 1890) won with 5.5/7, ahead of Konstantinos Ignatiadis (5.5) and Artiom Antoniadis (5.0). Ignatiadis shared the lead from round 4, winning on tie-break.

The biggest upset came in round 2: Nikolaos P Papadatos (1666) beat Dimitrios Vazelakis (1862), a +196-point gap.

Location
🇬🇷Athens, Greece
Dates
19 Sept 2025 → 31 Oct 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Top seed
🇬🇷Konstantinos Ignatiadis1991
Avg top 10
1,809
Participants
24
Federations · 1 represented
🇬🇷Greece×23
Top 3

How it unfolded

Top 6 · 7 rounds

Tight race until R7; 2 players tied at 5.5/7, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders
11
2
1
2
3
2
2
23.55.57R1R2R3R4R5R6R7
Ignatiadis5.5Ignatiadis5.5Antoniadis5Hrisanthopoulos4.5Ntaifas4.5Nikitakis4
R7 · TIEBREAK CLUSTER

2 players finish on 5.5/7. Ignatiadis takes the title on Buchholz Cut1 (25.0).

R7 · HEAD-TO-HEAD · WINNER VS 2ND

Konstantinos Ignatiadis drew with Theodoros Ignatiadis (White).

R4–R6 · WIN STREAK

Konstantinos Ignatiadis won 3 in a row (R4–R6).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Konstantinos Ignatiadis*
½
1
—
2Theodoros Ignatiadis
½
*
½
—
3Artiom Antoniadis
0
½
*
1
4Dimitrios Hrisanthopoulos——
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Ignatiadis, Theodoros1890GRE+16B=4N+6B+9N=3B+10N=2N5.525.027.520.001988+18.2
2Ignatiadis, Konstantinos1991GRE+17B=6N=4B+19N+9B+3N=1B5.524.526.019.001945-4.0
3Antoniadis, Artiom1827GRE+21B=9N+15B+5N=1N−2B+10B5.024.025.015.251923+20.6
4Ntaifas, Ioannis1717GRE+12N=1B=2N=7B=18N+8B=5B4.525.527.517.001848+25.8
5Hrisanthopoulos, Dimitrios1933GRE+8N+18B+7N−3B−10N+11B=4N4.522.524.514.251806-17.8
6Nikitakis, Michail1801GRE+11N=2B−1N+15B+7N=18BF4.022.022.012.751859+18.6
7Papadatos, Nikolaos P1666GRE+22B+10N−5B=4N−6BF+18N3.521.022.08.251807+23.2
8Mousliadis, Nikolaos1555GRE−5B+23N−9B+22N+14B−4N=15B3.518.519.05.751593+5.0
9Koutsioumpos, Ioannis1591GRE+13N=3B+8N−1B−2NF=12B3.026.029.010.501664+11.6
10Vazelakis, Dimitrios1862GRE+14N−7BF+17N+5B−1B−3N3.024.024.010.001724-18.6
11Vassalos, Panagiotis1489GRE−6B−17N+23B+16NF−5N+14B3.018.018.56.001611+16.2
12Voulgaris, Georgios1418GRE−4B=16N=21B+24N−15N=13B=9N3.016.516.54.751435+2.8
13Eirinidis, Dimitrios0GRE−9B=21N−16B=23N+22B=12N=17B3.013.013.54.501438-40.4
14Androulakis, Radamanthys Pavlos1483GRE−10B+22N−19B+21N−8N+23B−11N3.013.013.52.501496+2.8
15Theodoridis, Stefanos1596GRE+24BF−3N−6N+12BF=8N2.518.018.04.751563-5.0
16Zafeiris, Konstantinos1520GRE−1N=12B+13N−11B+21NFF2.517.017.05.501485-12.8
17Tepetes, Nikolaos Iason1559GRE−2N+11B+24N−10BFF=13N2.517.017.04.501645+3.6
18Panagiotakos, Petros1771GRE+23B−5NFF=4B=6N−7B2.018.518.54.751636-17.2
19Vergoulis, Konstantinos Efraim1585GREF=20B+14N−2BFFF1.513.013.03.751695+6.6
20Arnaoutis, Spyridon Agapitos1629GREF=19NFFF+24BF1.56.06.00.751585-2.4
21Kafousopoulos, Fotios1494GRE−3N=13B=12N−14B−16BFF1.017.518.03.001237-24.4
22Papageorgiadis, Georgios1414GRE−7N−14BF−8B−13NF+24B1.014.014.00.00764-36.8
23Stavropoulos, Simeon1417GRE−18N−8B−11N=13BF−14NF0.515.515.51.50772-25.4
24FIDE 421924980—−15NF−17B−12BF−20N−22N0.011.011.00.007230.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
24th PAO open Sep 2025 — Athens, Greece | Chess Tournament Results | ChessStats