26th Open Tournament 2026 by PAO Chess Club
19 players participated in this 7-round tournament, held from 16 Jan 2026 to 27 Feb 2026 in Athens, Greece. Top 10 Elo average was 1743, and top seed was Konstantinos Ignatiadis (🇬🇷 GRE, 1970).
Konstantinos Ignatiadis (🇬🇷 GRE, 1970) won with 6.0/7, ahead of Ioannis Ntaifas (5.5) and Ilias Liarakos (5.0). Ignatiadis shared the lead from round 6 and broke clear in the final round.
The biggest upset came in round 1: Ioannis Koutsioumpos (1551) beat Artiom Antoniadis (1929), a +378-point gap.
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How it unfolded
Top 6 · 7 roundsKonstantinos Ignatiadis led from R7; +0.5-point edge over the runner-up.
Konstantinos Ignatiadis takes the sole lead (6.0/7).
Konstantinos Ignatiadis lost to Ioannis Ntaifas (Black).
Konstantinos Ignatiadis 3+3 wins (R1–R3, R5–R7)Ioannis Ntaifas 4 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Konstantinos Ignatiadis | * | 0 | 1 | 1 |
| 2Ioannis Ntaifas | 1 | * | ½ | ½ |
| 3Ilias Liarakos | 0 | ½ | * | — |
| 4Konstantinos Kalogeropoulos | 0 | ½ | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignatiadis, Konstantinos | 1970 | GRE | +18B | +4N | +3B | −2N | +9B | +6B | +5N | 6.0 | 24.5 | 24.5 | 19.00 | 1968 | +2.8 |
| 2 | Ntaifas, Ioannis | 1754 | GRE | +13B | +12N | +15B | +1B | =14N | =3N | =4B | 5.5 | 20.5 | 21.5 | 16.00 | 1909 | +22.4 |
| 3 | Liarakos, Ilias | 0 | GRE | +16B | +10N | −1N | =6B | +5N | =2B | +9N | 5.0 | 23.5 | 24.5 | 14.00 | 1809 | 0.0 |
| 4 | Kalogeropoulos, Konstantinos | 1582 | GRE | +19B | −1B | +12N | −9N | +15B | +7N | =2N | 4.5 | 20.0 | 20.0 | 8.75 | 1752 | +48.4 |
| 5 | Koutsioumpos, Ioannis | 1551 | GRE | +6B | =9N | +14B | −8N | −3B | +10N | −1B | 3.5 | 22.5 | 24.0 | 8.75 | 1854 | +88.0 |
| 6 | Antoniadis, Artiom | 1929 | GRE | −5N | +18B | +9B | =3N | +10B | −1N | F | 3.5 | 22.5 | 22.5 | 7.50 | 1780 | -15.4 |
| 7 | Vassalos, Panagiotis | 1471 | GRE | −9B | −16N | +13B | F | +11N | −4B | +15N | 3.0 | 13.0 | 13.0 | 5.00 | 1608 | +21.2 |
| 8 | Theodoulidis, Vasilios | 1882 | GRE | −12B | +13N | +16B | +5B | F | F | F | 3.0 | 11.5 | 11.5 | 6.00 | 1729 | -11.0 |
| 9 | Panagiotakos, Petros | 1755 | GRE | +7N | =5B | −6N | +4B | −1N | F | −3B | 2.5 | 25.5 | 27.0 | 9.25 | 1703 | -6.2 |
| 10 | Michas, Iasonas | 1718 | GRE | =17N | −3B | =11N | +12B | −6N | −5B | =13B | 2.5 | 18.0 | 18.5 | 4.25 | 1517 | -59.6 |
| 11 | Zafeiris, Konstantinos | 1557 | GRE | F | −15N | =10B | +16N | −7B | +17N | F | 2.5 | 9.5 | 9.5 | 2.75 | 1570 | +1.6 |
| 12 | Androulakis, Radamanthys Pavlos | 1511 | GRE | +8N | −2B | −4B | −10N | −13N | F | +17B | 2.0 | 17.5 | 17.5 | 3.50 | 1510 | -10.4 |
| 13 | Kafousopoulos, Fotios | 1461 | GRE | −2N | −8B | −7N | F | +12B | F | =10N | 1.5 | 16.0 | 16.0 | 3.25 | 1517 | +2.6 |
| 14 | Vergoulis, Konstantinos Efraim | 1559 | GRE | F | +17B | −5N | F | =2B | F | F | 1.5 | 15.5 | 15.5 | 3.25 | 1569 | +0.4 |
| 15 | Papadatos, Nikolaos P | 1691 | GRE | F | +11B | −2N | F | −4N | F | −7B | 1.0 | 18.0 | 18.0 | 2.50 | 1401 | -30.4 |
| 16 | Vasilopoulos, Spyridon | 1578 | GRE | −3N | +7B | −8N | −11B | F | F | F | 1.0 | 15.0 | 15.0 | 3.00 | 1512 | -12.8 |
| 17 | Voulgaris, Georgios | 1404 | GRE | =10B | −14N | F | F | F | −11B | −12N | 0.5 | 9.5 | 9.5 | 1.25 | 1267 | -11.2 |
| 18 | Tepetes, Nikolaos Iason | 1575 | GRE | −1N | −6N | F | F | F | F | F | 0.0 | 14.5 | 14.5 | 0.00 | 1147 | -3.6 |
| 19 | Papageorgiadis, Georgios | 0 | GRE | −4N | F | F | F | F | F | F | 0.0 | 4.5 | 4.5 | 0.00 | 793 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Koutsioumpos, IoannisGRE+88.03.5 pts · #4
- 2Kalogeropoulos, KonstantinosGRE+48.44.5 pts · #5
- 3Ntaifas, IoannisGRE+22.45.5 pts · #1
- 1Michas, IasonasGRE-59.62.5 pts · #9
- 2Papadatos, Nikolaos PGRE-30.41.0 pts · #16
- 3Antoniadis, ArtiomGRE-15.43.5 pts · #7
- R1+378 Elo gap
- R1+371 Elo gap
- R7+220 Elo gap