Woodside - Pegasus Chess Sports Club Chess Tournament
Open SwissStandard
16 players participated in this 6-round tournament, held from 04 Oct 2025 to 05 Oct 2025 in Istanbul, Turkey. Top 10 Elo average was 1675, and top seed was Ozan Erkul (🇹🇷 TUR, 1754).
Deniz Sipahi (🇹🇷 TUR, 1710) won with 5.0/6, ahead of Tuna Yegen (4.0) and Hikmet Bagci (3.0). Sipahi took the lead from round 5.
The biggest upset came in round 1: Kayra Tutar (1577) beat Deniz Sipahi (1710), a +133-point gap.
Location
🇹🇷Istanbul, Turkey
Dates
04 Oct 2025 → 05 Oct 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 6 rounds
Federations · 1 represented
🇹🇷Turkiye×16
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsDeniz Sipahi led from R5; +1.0-point edge over the runner-up.
Co-leaders
5
2
1
1
1
1
R5 · LEADER CHANGE05 Oct
Deniz Sipahi takes the sole lead (4.0/5).
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Deniz Sipahi beat Tuna Yegen (Black).
WIN STREAKS · 2 top finishers
Deniz Sipahi 5 wins (R2–R6)Tuna Yegen 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Deniz Sipahi | * | 1 | — | 1 |
| 2Tuna Yegen | 0 | * | ½ | 1 |
| 3Ruzgar Kemal Vayic | — | ½ | * | — |
| 4Hikmet Bagci | 0 | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Sipahi, Deniz | 1710 | TUR | −10N | +8B | +6N | +3B | +2N | +5B | 5.0 | 14.0 | 15.5 | 14.00 | 1915 | +28.8 |
| 2 | Yegen, Tuna | 1650 | TUR | +5N | +14B | +3B | =4N | −1B | =6N | 4.0 | 16.0 | 17.0 | 9.25 | 1820 | +54.0 |
| 3 | Bagci, Hikmet | 1658 | TUR | +15N | +9B | −2N | −1N | +16B | −7B | 3.0 | 14.5 | 15.0 | 3.50 | 1587 | -11.2 |
| 4 | Vayic, Ruzgar Kemal | 1709 | TUR | =11B | +12N | +10B | =2B | −5N | F | 3.0 | 11.5 | 13.0 | 5.75 | 1678 | -6.8 |
| 5 | Erkul, Ozan | 1754 | TUR | −2B | +16N | =13B | F | +4B | −1N | 2.5 | 14.5 | 15.0 | 4.25 | 1646 | -27.6 |
| 6 | Secereli, Sidar | 1647 | TUR | =12B | +11N | −1B | F | =8N | =2B | 2.5 | 14.0 | 15.5 | 5.25 | 1592 | -8.2 |
| 7 | Altun, Kadir Ata | 1540 | TUR | −14N | =15B | −8N | F | +9B | +3N | 2.5 | 9.0 | 9.0 | 5.50 | 1612 | +19.6 |
| 8 | Duray, Sedat | 1554 | TUR | =13B | −1N | +7B | F | =6B | F | 2.0 | 13.0 | 13.0 | 4.50 | 1653 | +10.6 |
| 9 | Baygin, Tahsin Kaan | 1630 | TUR | +16B | −3N | −11B | +12N | −7N | F | 2.0 | 11.5 | 12.0 | 2.00 | 1467 | -44.0 |
| 10 | Tutar, Kayra | 1577 | TUR | +1B | =13N | −4N | F | F | F | 1.5 | 12.0 | 12.0 | 5.75 | 1709 | +21.2 |
| 11 | Surek, Cinar | 1572 | TUR | =4N | −6B | +9N | F | F | F | 1.5 | 9.5 | 9.5 | 3.50 | 1664 | +14.8 |
| 12 | Haznedaroglu, Pars | 1472 | TUR | =6N | −4B | =15N | −9B | F | =16N | 1.5 | 9.0 | 9.0 | 2.00 | 1448 | -7.6 |
| 13 | Serin, Sezgin | 1707 | TUR | =8N | =10B | =5N | F | F | F | 1.5 | 6.0 | 6.0 | 3.00 | 1629 | -6.0 |
| 14 | Duzgun, Ege Can | 1707 | TUR | +7B | −2N | F | F | F | F | 1.0 | 9.0 | 9.0 | 2.50 | 1596 | -9.2 |
| 15 | Bayraktar, Ata | 1538 | TUR | −3B | =7N | =12B | F | F | F | 1.0 | 7.5 | 7.5 | 2.00 | 1432 | -17.2 |
| 16 | Yilmaz, Yunus Emre | 1454 | TUR | −9N | −5B | F | F | −3N | =12B | 0.5 | 10.0 | 10.0 | 0.75 | 1307 | -25.2 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Yegen, TunaTUR+54.04.0 pts · #2
- 2Sipahi, DenizTUR+28.85.0 pts · #1
- 3Tutar, KayraTUR+21.21.5 pts · #10
Top rating losers
- 1Baygin, Tahsin KaanTUR-44.02.0 pts · #8
- 2Erkul, OzanTUR-27.62.5 pts · #7
- 3Yilmaz, Yunus EmreTUR-25.20.5 pts · #16
Biggest upsets
- R1+133 Elo gap
- R6+118 Elo gap
- R1+104 Elo gap