6. KOGE OPEN 2025 - 4
10 players participated in this 9-round tournament, held from 15 Jul 2025 to 19 Jul 2025 in Koge, Denmark. 1 titled players from 4 federations. Top 10 Elo average was 1910, and top seed was Nienke van den Brink (🇩🇰 DEN, 1961).
Nathan Preman (🇸🇪 SWE, 1941) won with 7.0/9, ahead of Michael Mortensen (6.0) and Mattheo Gabriel Junge (5.5). Preman won solo starting round 2.
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How it unfolded
Top 10 · 9 roundsNathan Preman led from R2 onwards, the runner-up race stayed tight.
Nathan Preman never relinquished the lead after R2; final gap +1.0 over the runner-up.
Nathan Preman opens a +1.5-point gap over the chasing pack (closest: CM Michael Mortensen); the title is out of reach before R9.
Nathan Preman beat CM Michael Mortensen (White).
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇸🇪Preman, Nathan | 1941 | * | 1 | ½ | 1 | ½ | ½ | 1 | ½ | 1 | 1 | 7.0 | 29.00 | 38.0 | +82.8 | 2126 |
| 2 | 🇳🇴CMMortensen, Michael | 1901 | 0 | * | ½ | 0 | ½ | 1 | 1 | 1 | 1 | 1 | 6.0 | 21.25 | 39.0 | +60.8 | 2035 |
| 4 | 🇩🇪Junge, Mattheo Gabriel | 1901 | ½ | ½ | * | 1 | ½ | ½ | ½ | ½ | ½ | 1 | 5.5 | 23.25 | 39.5 | +44.8 | 1991 |
| 3 | 🇩🇰van den Brink, Nienke | 1961 | 0 | 1 | 0 | * | ½ | ½ | ½ | 1 | 1 | 1 | 5.5 | 20.00 | 39.5 | +5.8 | 1984 |
| 5 | 🇩🇰Larsen, Simon Bering | 1889 | ½ | ½ | ½ | ½ | * | ½ | 0 | 1 | ½ | 1 | 5.0 | 20.00 | 40.0 | +15.8 | 1955 |
| 6 | 🇩🇰Petersen, Lars Uffe | 1916 | ½ | 0 | ½ | ½ | ½ | * | ½ | ½ | 1 | ½ | 4.5 | 18.50 | 40.5 | -1.8 | 1909 |
| 7 | 🇸🇪Hari, Sriyansh | 1891 | 0 | 0 | ½ | ½ | 1 | ½ | * | 0 | 1 | 1 | 4.5 | 16.75 | 40.5 | +10.4 | 1912 |
| 8 | 🇸🇪Hamilton, Olov | 1913 | ½ | 0 | ½ | 0 | 0 | ½ | 1 | * | 0 | ½ | 3.0 | 13.75 | 42.0 | -31.0 | 1784 |
| 9 | 🇩🇰Kamal, Yogasimman | 1889 | 0 | 0 | ½ | 0 | ½ | 0 | 0 | 1 | * | ½ | 2.5 | 9.00 | 42.5 | -68.4 | 1746 |
| 10 | 🇩🇰Eilertsen, Filip Kingo | 1893 | 0 | 0 | 0 | 0 | 0 | ½ | 0 | ½ | ½ | * | 1.5 | 5.00 | 43.5 | -111.2 | 1638 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Preman, NathanSWE+82.87.0 pts · #1
- 2Mortensen, MichaelCMNOR+60.86.0 pts · #2
- 3Junge, Mattheo GabrielGER+44.85.5 pts · #4
- 1Eilertsen, Filip KingoDEN-111.21.5 pts · #10
- 2Kamal, YogasimmanDEN-68.42.5 pts · #9
- 3Hamilton, OlovSWE-31.03.0 pts · #8