OSS Klubbmesterskap 2025 A R 1-2
Round-RobinStandard
7 players participated in this 2-round tournament, held from 18 Sept 2025 to 25 Sept 2025 in Oslo, Norway. 5 titled players. Top 10 Elo average was 2257, and top seed was Semen Mitusov (🇳🇴 NOR, IM, 2468).
Manuel Ramirez Garrastacho (🇳🇴 NOR, 2125) won with 1.5/2, ahead of Havard Haug (1.5) and Peder Marcus Aamodt (1.5). Ramirez Garrastacho won on tie-break after catching the field in the final round.
The biggest upset came in round 2: Manuel Ramirez Garrastacho (2125) beat Louis Khoo-Thwe (FM, 2233), a +108-point gap.
Location
🇳🇴Oslo, Norway
Dates
18 Sept 2025 → 25 Sept 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Round-robin · 2 rounds
Titled players · 5
IM×1
FM×3
WGM×1
Federations · 1 represented
🇳🇴Norway×7
Top 3
- 🥇
- 🥈
- 🥉
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇳🇴Ramirez Garrastacho, Manuel | 2125 | * | ½ | — | — | 1 | — | — | 1.5 | 1.25 | 2.0 | +19.2 | 2496 |
| 2 | 🇳🇴FMHaug, Havard | 2373 | ½ | * | — | — | — | 1 | — | 1.5 | 0.75 | 1.5 | +0.2 | 2375 |
| 3 | 🇳🇴Aamodt, Peder Marcus | 2183 | — | — | * | — | ½ | — | 1 | 1.5 | 0.25 | 0.5 | +22.8 | 2400 |
| 4 | 🇳🇴IMMitusov, Semen | 2468 | — | — | — | * | — | 1 | — | 1.0 | 0.00 | 0.0 | +2.1 | 3039 |
| 5 | 🇳🇴FMKhoo-Thwe, Louis | 2233 | 0 | — | ½ | — | * | — | — | 0.5 | 0.75 | 3.0 | -28.8 | 1961 |
| 6 | 🇳🇴FMMoen, Ole Christian | 2239 | — | 0 | — | 0 | — | * | — | 0.0 | 0.00 | 2.5 | -10.6 | 1621 |
| 7 | 🇳🇴WGMKoskela, Niina | 2180 | — | — | 0 | — | — | — | * | 0.0 | 0.00 | 1.5 | -10.0 | 1383 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Aamodt, Peder MarcusNOR+22.81.5 pts · #3
- 2Ramirez Garrastacho, ManuelNOR+19.21.5 pts · #1
- 3Mitusov, SemenIMNOR+2.11.0 pts · #4
Top rating losers
- 1Khoo-Thwe, LouisFMNOR-28.80.5 pts · #5
- 2Moen, Ole ChristianFMNOR-10.60.0 pts · #6
- 3Koskela, NiinaWGMNOR-10.00.0 pts · #7
Biggest upsets
- R2+108 Elo gap