Hayri Ozbilen 11th Memorial Chess Tournament
29 players participated in this 6-round tournament, held from 25 Oct 2025 to 28 Oct 2025 in Istanbul, Turkey. 1 titled players. Top 10 Elo average was 1952, and top seed was Enes Yusuf Maruflu (🇹🇷 TUR, 2161).
Enes Yusuf Maruflu (🇹🇷 TUR, 2161) won with 4.5/6, ahead of Yigit Efe (4.5) and Omer Akkara (4.5). Maruflu shared the lead from round 1, winning on tie-break.
The biggest upset came in round 4: Ibrahim Enes Isikyildiz (1878) beat Kaan Akbas (2154), a +276-point gap.
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How it unfolded
Top 6 · 6 roundsTight race until R6; 3 players tied at 4.5/6, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 3 at the finish.
3 players finish on 4.5/6. Maruflu takes the title on Buchholz Cut1 (19.5).
Yigit Efe went unbeaten across 6 games (R1–R6).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Yigit Efe | * | — | — | ½ |
| 2Enes Yusuf Maruflu | — | * | 1 | ½ |
| 3CMOmer Akkara | — | 0 | * | — |
| 4Enver Konyar | ½ | ½ | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Maruflu, Enes Yusuf | 2161 | TUR | +21N | +13B | =5N | +3B | =4B | =6N | 4.5 | 19.5 | 21.5 | 15.50 | 2109 | -3.8 |
| 2 | Efe, Yigit | 1644 | TUR | =7N | =21B | +23N | +17B | =5N | +4B | 4.5 | 16.5 | 18.5 | 13.50 | 1969 | +99.6 |
| 3 | Akkara, OmerCM | 2014 | TUR | =16B | +22N | +18B | −1N | +14B | +10N | 4.5 | 16.0 | 18.0 | 12.25 | 2019 | +10.0 |
| 4 | Isikyildiz, Ibrahim Enes | 1878 | TUR | +19B | +9N | =10B | +6B | =1N | −2N | 4.0 | 20.5 | 23.0 | 14.50 | 2018 | +44.0 |
| 5 | Konyar, Enver | 1883 | TUR | +15N | +26B | =1B | =10N | =2B | =12N | 4.0 | 19.0 | 20.5 | 12.50 | 1936 | +18.4 |
| 6 | Akbas, Kaan | 2154 | TUR | =22B | +14N | +8B | −4N | +16B | =1B | 4.0 | 18.0 | 20.0 | 12.75 | 1993 | -17.8 |
| 7 | Harman, Ongun | 1891 | TUR | =2B | =16N | +29B | +12N | =10B | =8N | 4.0 | 18.0 | 18.0 | 10.75 | 1886 | +3.2 |
| 8 | Sadik, Muhammed Selim | 1908 | TUR | +11N | =18B | −6N | +21B | +13N | =7B | 4.0 | 17.0 | 19.0 | 11.75 | 1947 | +13.2 |
| 9 | Akyuz, Pars | 1760 | TUR | +17N | −4B | +11N | −13B | +18N | +24B | 4.0 | 15.5 | 17.5 | 10.50 | 1813 | +18.0 |
| 10 | Ozcan, Alp Orcun | 2026 | TUR | +20N | +23B | =4N | =5B | =7N | −3B | 3.5 | 19.0 | 21.0 | 10.50 | 1899 | -16.8 |
| 11 | Bagci, Hikmet | 1658 | TUR | −8B | +24N | −9B | =25N | +22B | +16N | 3.5 | 14.5 | 16.0 | 7.25 | 1746 | +14.4 |
| 12 | Oguz, Emek Ege | 1805 | TUR | −26N | +28B | +20N | −7B | +21N | =5B | 3.5 | 14.0 | 14.0 | 6.50 | 1778 | -6.0 |
| 13 | Yorkan, Ahmet Selim | 1804 | TUR | +25B | −1N | =16B | +9N | −8B | =14N | 3.0 | 18.0 | 19.5 | 8.25 | 1802 | -4.0 |
| 14 | Barutcu, Bahadir | 1719 | TUR | +29N | −6B | =26N | +15B | −3N | =13B | 3.0 | 16.0 | 16.0 | 5.25 | 1782 | +7.0 |
| 15 | Ozdemir, Emrehan | 1620 | TUR | −5B | =27N | +19B | −14N | +25B | =17N | 3.0 | 13.5 | 14.0 | 5.50 | 1641 | +2.6 |
| 16 | Sezer, Toprak | 1658 | TUR | =3N | =7B | =13N | +23B | −6N | −11B | 2.5 | 19.0 | 21.0 | 7.75 | 1808 | +36.8 |
| 17 | Ozdemir, Erden | 1538 | TUR | −9B | +19N | +22B | −2N | −24B | =15B | 2.5 | 16.0 | 18.0 | 6.00 | 1583 | +6.4 |
| 18 | Mercan, Mehmet Fatih | 1717 | TUR | +27B | =8N | −3N | +26B | −9B | F | 2.5 | 14.5 | 14.5 | 4.00 | 1756 | +8.8 |
| 19 | Sahin, Kerem | 1613 | TUR | −4N | −17B | −15N | +28B | +23N | =20N | 2.5 | 14.0 | 14.0 | 3.25 | 1614 | -3.2 |
| 20 | Hersek, Dogu Seyran | 1624 | TUR | −10B | +25N | −12B | −24N | +27N | =19B | 2.5 | 13.0 | 13.5 | 3.25 | 1620 | -7.6 |
| 21 | Fidan, Naz Mercan | 1709 | TUR | −1B | =2N | +27B | −8N | −12B | =22N | 2.0 | 18.5 | 19.0 | 3.75 | 1646 | -24.0 |
| 22 | Araz, Mustafa Zeynullah | 1672 | TUR | =6N | −3B | −17N | +27B | −11N | =21B | 2.0 | 16.5 | 17.0 | 3.50 | 1621 | -23.6 |
| 23 | Kaban, Mahmut | 1757 | TUR | +24B | −10N | −2B | −16N | −19B | +25N | 2.0 | 15.0 | 16.5 | 3.50 | 1554 | -32.8 |
| 24 | Selman, Murat | 1530 | TUR | −23N | −11B | F | +20B | +17N | −9N | 2.0 | 14.5 | 14.5 | 5.00 | 1595 | +7.8 |
| 25 | Sezgin, Hakan Ertug | 1601 | TUR | −13N | −20B | +28N | =11B | −15N | −23B | 1.5 | 14.0 | 14.0 | 1.75 | 1486 | -17.6 |
| 26 | Hazer, Eren | 1609 | TUR | +12B | −5N | =14B | −18N | F | F | 1.5 | 13.0 | 13.0 | 5.00 | 1694 | +15.2 |
| 27 | Simsek, Deniz | 1490 | TUR | −18N | =15B | −21N | −22N | −20B | F | 0.5 | 12.0 | 12.0 | 1.50 | 1302 | -16.6 |
| 28 | Dal, Cagan Serkan | 1611 | TUR | F | −12N | −25B | −19N | F | F | 0.0 | 7.5 | 7.5 | 0.00 | 873 | -50.4 |
| 29 | Koken, Muhittin | 1524 | TUR | −14B | F | −7N | F | F | F | 0.0 | 7.0 | 7.0 | 0.00 | 1006 | -7.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Efe, YigitTUR+99.64.5 pts · #1
- 2Isikyildiz, Ibrahim EnesTUR+44.04.0 pts · #8
- 3Sezer, ToprakTUR+36.82.5 pts · #16
- 1Dal, Cagan SerkanTUR-50.40.0 pts · #29
- 2Kaban, MahmutTUR-32.82.0 pts · #23
- 3Fidan, Naz MercanTUR-24.02.0 pts · #24
- R4+276 Elo gap
- R6+234 Elo gap
- R1+196 Elo gap