2nd Open SO Petralonon over 1700
16 players participated in this 7-round tournament, held from 13 May 2025 to 24 Jun 2025 in Petralona, Greece. 1 titled players. Top 10 Elo average was 1917, and top seed was Georgios Mitsis (🇬🇷 GRE, IM, 2385).
Georgios Mitsis (🇬🇷 GRE, IM, 2385) won with 6.5/7, ahead of Dimosthenis Panagiot Tzortzatos (5.0) and Ilias Tsalamagkakis (4.5). Mitsis won solo starting round 2.
The biggest upset came in round 4: Ioannis Nikitakis (1657) beat Maximos Megagiannis (1816), a +159-point gap.
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How it unfolded
Top 6 · 7 roundsIM Georgios Mitsis led from R2; +1.5-point edge over the runner-up.
IM Georgios Mitsis never relinquished the lead after R2; final gap +1.5 over the runner-up.
IM Georgios Mitsis drew with Dimosthenis Panagiot Tzortzatos (Black).
IM Georgios Mitsis posted 3 in a row (R1–R3) and 3 in a row (R5–R7) — total 6 wins.
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1IMGeorgios Mitsis | * | ½ | 1 | — |
| 2Dimosthenis Panagiot Tzortzatos | ½ | * | 0 | 1 |
| 3Ilias Tsalamagkakis | 0 | 1 | * | ½ |
| 4Stylianos Karantoniou | — | 0 | ½ | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Mitsis, GeorgiosIM | 2385 | GRE | +15B | +8N | +9B | =2N | +7B | +3N | +5B | 6.5 | 22.0 | 23.5 | 21.00 | 2407 | +0.6 |
| 2 | Tzortzatos, Dimosthenis Panagiot | 1946 | GRE | =11N | +7B | +4N | =1B | −3B | +6N | +12B | 5.0 | 23.0 | 25.0 | 16.25 | 2030 | +26.3 |
| 3 | Tsalamagkakis, Ilias | 1866 | GRE | +14B | =4N | +10B | F | +2N | −1B | +7N | 4.5 | 22.0 | 22.0 | 13.75 | 2061 | +28.2 |
| 4 | Karantoniou, Stylianos | 1685 | GRE | +5N | =3B | −2B | −8N | +10B | +14N | F | 3.5 | 20.0 | 20.0 | 9.75 | 1899 | +69.2 |
| 5 | Samartzis, Mihail | 1835 | GRE | −4B | =15N | =8B | +12N | =14N | +9B | −1N | 3.5 | 19.5 | 21.0 | 8.00 | 1870 | +4.2 |
| 6 | Bouras, Antonios | 1856 | GRE | −7N | +16B | =14N | +11B | =8N | −2B | =9N | 3.5 | 17.5 | 18.5 | 6.75 | 1797 | -11.0 |
| 7 | Emmanouilidis, Paschalis | 1730 | GRE | +6B | −2N | +12B | +10N | −1N | F | −3B | 3.0 | 25.0 | 27.0 | 8.00 | 1916 | +55.2 |
| 8 | Tsitimakis, Periklis | 1825 | GRE | +16N | −1B | =5N | +4B | =6B | F | F | 3.0 | 21.0 | 21.0 | 8.00 | 1924 | +22.8 |
| 9 | Tziallilas, Kostas | 1920 | GRE | F | +13B | −1N | =14B | +16N | −5N | =6B | 3.0 | 18.0 | 18.0 | 5.50 | 1875 | -9.2 |
| 10 | Raptakis, Solon | 1837 | GRE | F | +11B | −3N | −7B | −4N | =15N | +16B | 2.5 | 15.5 | 15.5 | 3.75 | 1695 | -23.6 |
| 11 | Oikonomou, Andreas | 1756 | GRE | =2B | −10N | =15B | −6N | −12B | +16N | −13N | 2.0 | 16.5 | 17.5 | 4.25 | 1672 | -15.8 |
| 12 | Deli, Eleanna Ratzvika | 1863 | GRE | F | F | −7N | −5B | +11N | +13B | −2N | 2.0 | 15.5 | 15.5 | 4.00 | 1748 | -16.0 |
| 13 | Kapsoulis, Georgios | 1836 | GRE | F | −9N | F | F | +15B | −12N | +11B | 2.0 | 8.5 | 8.5 | 3.50 | 1839 | +0.4 |
| 14 | Tselios, Vasileios D | 1746 | GRE | −3N | F | =6B | =9N | =5B | −4B | F | 1.5 | 19.5 | 19.5 | 5.00 | 1683 | -8.4 |
| 15 | Megagiannis, Maximos | 1816 | GRE | −1N | =5B | =11N | −16B | −13N | =10B | F | 1.5 | 18.0 | 19.0 | 4.00 | 1663 | -48.6 |
| 16 | Nikitakis, Ioannis | 1657 | GRE | −8B | −6N | F | +15N | −9B | −11B | −10N | 1.0 | 15.5 | 15.5 | 1.50 | 1562 | -20.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Karantoniou, StylianosGRE+69.23.5 pts · #4
- 2Emmanouilidis, PaschalisGRE+55.23.0 pts · #7
- 3Tsalamagkakis, IliasGRE+28.24.5 pts · #3
- 1Megagiannis, MaximosGRE-48.61.5 pts · #14
- 2Raptakis, SolonGRE-23.62.5 pts · #10
- 3Nikitakis, IoannisGRE-20.81.0 pts · #16
- R4+159 Elo gap
- R5+152 Elo gap
- R1+150 Elo gap