ASB Weekly Chess Open 1
Open SwissStandard
20 players participated in this 5-round tournament, held from 22 Nov 2025 to 20 Dec 2025 in Volos, Greece. Top 10 Elo average was 1154, and top seed was Spyridon Pagkratis (🇬🇷 GRE, 1830).
Leonidas Antonakis (🇬🇷 GRE, 1732) won with 5.0/5, ahead of Spyridon Pagkratis (4.0) and Stamatis Kountrias (4.0). Antonakis won solo starting round 3.
Location
🇬🇷Volos, Greece
Dates
22 Nov 2025 → 20 Dec 2025
Time control
Standard: 75 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Federations · 1 represented
🇬🇷Greece×17
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 5 roundsLeonidas Antonakis led from R3; +1.0-point edge over the runner-up.
Co-leaders
11
5
1
1
1
R3–R5 · LEAD HELD
Leonidas Antonakis never relinquished the lead after R3; final gap +1.0 over the runner-up.
WIN STREAKS · 2 top finishers
Leonidas Antonakis 5 wins (R1–R5)Spyridon Pagkratis 3 wins (R3–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Leonidas Antonakis | * | — | — | 1 |
| 2Stamatis Kountrias | — | * | 1 | — |
| 3Spyridon Pagkratis | — | 0 | * | — |
| 4Dimitrios Karagiannakis | 0 | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Antonakis, Leonidas | 1732 | GRE | +13N | +5B | +14N | +9B | +4N | 5.0 | 11.0 | 13.0 | 13.00 | 2376 | +24.0 |
| 2 | Pagkratis, Spyridon | 1830 | GRE | +7B | −3N | +5N | +15B | +10N | 4.0 | 12.5 | 14.5 | 10.50 | 2252 | +3.6 |
| 3 | Kountrias, Stamatis | 0 | GRE | +?N | +2B | −6N | +?B | +11N | 4.0 | 9.5 | 9.5 | 6.50 | 1754 | 0.0 |
| 4 | Karagiannakis, Dimitrios | 0 | GRE | +?N | +?B | =9N | +14B | −1B | 3.5 | 9.5 | 9.5 | 3.25 | 1628 | 0.0 |
| 5 | Taktikos, Nikiforos | 0 | GRE | +?N | −1N | −2B | +?B | +?N | 3.0 | 9.0 | 9.0 | 0.00 | 1532 | 0.0 |
| 6 | Sarsentos, Dimitrios | 1821 | GRE | F | +16N | +3B | F | +9N | 3.0 | 8.5 | 8.5 | 8.50 | 2441 | +5.2 |
| 7 | Papathanasiou, Evangelos | 0 | GRE | −2N | +?B | −?N | +?B | +15N | 3.0 | 6.0 | 6.0 | 2.00 | 1619 | 0.0 |
| 8 | Papathanasiou, Emmanouil | 0 | GRE | −?N | −?B | +?N | +18B | +13N | 3.0 | 3.0 | 3.0 | 3.00 | 1429 | 0.0 |
| 9 | Zacharis, Lampros | 1641 | GRE | +12B | +17N | =4B | −1N | −6B | 2.5 | 14.0 | 16.0 | 6.25 | 977 | -25.6 |
| 10 | Koutidis, Athanasios | 1450 | GRE | F | =11N | +17B | +16N | −2B | 2.5 | 10.5 | 10.5 | 5.25 | 1497 | +1.0 |
| 11 | Chalatsis, Apostolos | 1552 | GRE | F | =10B | +18N | +12N | −3B | 2.5 | 10.0 | 10.0 | 4.75 | 1452 | -5.6 |
| 12 | FIDE 541018010 | 0 | — | −9N | =?B | +?N | −11B | +?N | 2.5 | 5.0 | 5.0 | 0.00 | 796 | 0.0 |
| 13 | Papathanasiou, Georgios | 0 | GRE | −1B | +?N | −16B | +17N | −8B | 2.0 | 12.0 | 12.0 | 2.00 | 932 | 0.0 |
| 14 | Bougas, Theodoros | 1509 | GRE | +19N | +18B | −1B | −4N | F | 2.0 | 11.5 | 12.5 | 2.00 | 932 | -4.4 |
| 15 | Nyktas, Nikolaos | 0 | GRE | −16B | +19N | +?B | −2N | −7B | 2.0 | 10.0 | 10.0 | 1.00 | 1029 | 0.0 |
| 16 | Voutiritsas, Christos | 0 | GRE | +15N | −6B | +13N | −10B | F | 2.0 | 9.5 | 11.5 | 4.00 | 837 | 0.0 |
| 17 | FIDE 4280385 | 0 | — | +?N | −9B | −10N | −13B | +20N | 2.0 | 7.0 | 7.0 | 0.00 | 747 | 0.0 |
| 18 | Tsamis, Evangelos | 0 | GRE | +?B | −14N | −11B | −8N | −?B | 1.0 | 7.5 | 7.5 | 0.00 | 731 | 0.0 |
| 19 | Poliora, Aikaterini Sofia | 0 | GRE | −14B | −15B | −?N | F | +?N | 1.0 | 4.0 | 4.0 | 0.00 | 1460 | 0.0 |
| 20 | FIDE 541010078 | 0 | — | F | F | −?N | −?B | −17B | 0.0 | 2.0 | 2.0 | 0.00 | 609 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Antonakis, LeonidasGRE+24.05.0 pts · #1
- 2Sarsentos, DimitriosGRE+5.23.0 pts · #8
- 3Pagkratis, SpyridonGRE+3.64.0 pts · #5
Top rating losers
- 1Zacharis, LamprosGRE-25.62.5 pts · #14
- 2Chalatsis, ApostolosGRE-5.62.5 pts · #11
- 3Bougas, TheodorosGRE-4.42.0 pts · #19