CChessStats

OSS Klubbmesterskap 2025 A R 5-7

Round-RobinStandard

7 players participated in this 7-round tournament, held from 30 Oct 2025 to 27 Nov 2025 in Oslo, Norway. 5 titled players. Top 10 Elo average was 2265, and top seed was Semen Mitusov (🇳🇴 NOR, IM, 2468).

Havard Haug (🇳🇴 NOR, FM, 2396) won with 2.5/7, ahead of Semen Mitusov (2.5) and Manuel Ramirez Garrastacho (1.5). Haug shared the lead from round 1, winning on tie-break.

The biggest upset came in round 7: Manuel Ramirez Garrastacho (2125) beat Peder Marcus Aamodt (2241), a +116-point gap.

Location
🇳🇴Oslo, Norway
Dates
30 Oct 2025 → 27 Nov 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Round-robin · 7 rounds
Top seed
🇳🇴IMSemen Mitusov2468
Avg top 10
2,265
Participants
7
Titled players · 5
IM×1
FM×3
WGM×1
Federations · 1 represented
🇳🇴Norway×7
Top 3

How it unfolded

Top 7 · 7 rounds

Title race narrowed from 8 co-leaders at R4 to 2 at the finish.

Co-leaders
8
8
8
8
2
2
2
#1#2#4#7R1R2R3R4R5R6R7
Haug#1Mitusov#2Ramirez Garrastacho#3Moen#4Koskela#5Aamodt#6Khoo-Thwe#7
R7 · HEAD-TO-HEAD · WINNER VS 2ND

FM Havard Haug drew with IM Semen Mitusov (Black).

Cross-table

#PlayerElo1234567PtsSBBhΔ EloPerf
1🇳🇴FMHaug, Havard2396*½——11—2.51.753.0+11.62559
2🇳🇴IMMitusov, Semen2468½*——1—12.51.753.0+3.02553
3🇳🇴Ramirez Garrastacho, Manuel2125——*½—1—1.50.501.0+14.42417
4🇳🇴FMMoen, Ole Christian2212——½*½——1.01.002.0-4.02157
5🇳🇴WGMKoskela, Niina218000—½*——0.50.506.0-5.62092
6🇳🇴Aamodt, Peder Marcus22410—0——*—0.00.004.0-34.81470
7🇳🇴FMKhoo-Thwe, Louis2233—0————*0.00.002.5-10.01670

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets