27th Open Tournament 2026 by OPAX
Open SwissStandard
8 players participated in this 7-round tournament, held from 23 Jan 2026 to 13 Mar 2026 in Cholargos, Greece. Top 10 Elo average was 960, and top seed was Apostolos Kontarinis (🇬🇷 GRE, 1588).
Nikolaos NA Oikonomou (🇬🇷 GRE, 1542) won with 6.5/7, ahead of Ioannis Sgouros Niarchos (5.5) and Apostolos Kontarinis (5.0). Oikonomou shared the lead from round 5 and broke clear in the final round.
Location
🇬🇷Cholargos, Greece
Dates
23 Jan 2026 → 13 Mar 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Federations · 1 represented
🇬🇷Greece×7
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsNikolaos NA Oikonomou led from R7; +1.0-point edge over the runner-up.
Co-leaders
4
1
1
1
2
2
1
R7 · LEADER CHANGE13 Mar
Nikolaos NA Oikonomou takes the sole lead (6.5/7).
R2 · HEAD-TO-HEAD · WINNER VS 2ND
Nikolaos NA Oikonomou drew with Ioannis Sgouros Niarchos (Black).
WIN STREAKS · 3 top finishers
Nikolaos NA Oikonomou 5 wins (R3–R7)Ioannis Sgouros Niarchos 4 wins (R3–R6)Apostolos Kontarinis 4 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Nikolaos NA Oikonomou | * | ½ | 1 | 1 |
| 2Ioannis Sgouros Niarchos | ½ | * | — | 1 |
| 3Apostolos Kontarinis | 0 | — | * | 1 |
| 4Theodoros Liatsis | 0 | 0 | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Oikonomou, Nikolaos NA | 1542 | GRE | +7B | =2N | +4B | +5N | +3B | +6N | +8B | 6.5 | 19.5 | 20.5 | 17.75 | 1876 | +36.2 |
| 2 | Sgouros Niarchos, Ioannis | 1585 | GRE | +6N | =1B | +7N | +8N | +4B | +5N | F | 5.5 | 20.5 | 21.5 | 13.25 | 1816 | +18.8 |
| 3 | Kontarinis, Apostolos | 1588 | GRE | +4B | +5N | +8B | +6B | −1N | +7B | F | 5.0 | 21.0 | 22.0 | 10.00 | 1673 | +16.8 |
| 4 | Liatsis, Theodoros | 1524 | GRE | −3N | +6B | −1N | +7B | −2N | +8N | +5B | 4.0 | 22.0 | 23.0 | 6.00 | 1442 | -11.4 |
| 5 | Alexandris, Dimosthenis | 0 | GRE | +8B | −3B | +6N | −1B | −7N | −2B | −4N | 2.0 | 24.0 | 25.0 | 3.00 | 1296 | -27.2 |
| 6 | Melanouri, Eirini | 1443 | GRE | −2B | −4N | −5B | −3N | +8B | −1B | +7N | 2.0 | 24.0 | 25.0 | 2.00 | 730 | -76.8 |
| 7 | Papaioannou, Konstantinos I | 0 | GRE | −1N | −8N | −2B | −4N | +5B | −3N | −6B | 1.0 | 25.0 | 26.0 | 2.00 | 1243 | -122.8 |
| 8 | FIDE 541023625 | 0 | — | −5N | +7B | −3N | −2B | −6N | −4B | −1N | 1.0 | 25.0 | 26.0 | 1.00 | 716 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Oikonomou, Nikolaos NAGRE+36.26.5 pts · #1
- 2Sgouros Niarchos, IoannisGRE+18.85.5 pts · #2
- 3Kontarinis, ApostolosGRE+16.85.0 pts · #3
Top rating losers
- 1Papaioannou, Konstantinos IGRE-122.81.0 pts · #5
- 2Melanouri, EiriniGRE-76.82.0 pts · #7
- 3Alexandris, DimosthenisGRE-27.22.0 pts · #6