Kalmar Klassmasterskap 2025 Klass 1 R567
Round-RobinStandard
8 players participated in this 7-round tournament, held from 05 Nov 2025 to 03 Dec 2025 in Kalmar, Sweden. Top 10 Elo average was 1847, and top seed was Stefan Bjorklund (🇸🇪 SWE, 2047).
Viggo Mattsson (🇸🇪 SWE, 1909) won with 2.5/7, ahead of Stefan Bjorklund (2.5) and Mikael Ohlsson (2.0). Mattsson shared the lead from round 1, winning on tie-break.
The biggest upset came in round 7: Mikael Ohlsson (1755) beat Peter Linden (1880), a +125-point gap.
Location
🇸🇪Kalmar, Sweden
Dates
05 Nov 2025 → 03 Dec 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Round-robin · 7 rounds
Federations · 1 represented
🇸🇪Sweden×8
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 8 · 7 roundsTitle race narrowed from 8 co-leaders at R4 to 2 at the finish.
Co-leaders
8
8
8
8
8
2
2
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 🇸🇪Mattsson, Viggo | 1909 | * | — | — | — | ½ | 1 | 1 | — | 2.5 | 2.50 | 3.0 | +7.8 | 2021 |
| 1 | 🇸🇪Bjorklund, Stefan | 2047 | — | * | — | ½ | 1 | — | — | 1 | 2.5 | 2.25 | 3.0 | +5.4 | 2126 |
| 3 | 🇸🇪Ohlsson, Mikael | 1755 | — | — | * | — | — | ½ | ½ | 1 | 2.0 | 1.50 | 2.5 | +9.4 | 1907 |
| 4 | 🇸🇪Larsson, Anders 1953 | 1909 | — | ½ | — | * | ½ | ½ | — | — | 1.5 | 2.25 | 4.5 | -4.8 | 1857 |
| 6 | 🇸🇪Arbman, Jan | 1814 | ½ | 0 | — | ½ | * | — | — | — | 1.0 | 2.00 | 6.5 | +8.4 | 1829 |
| 5 | 🇸🇪Lindberg, Cajsa | 1763 | 0 | — | ½ | ½ | — | * | — | — | 1.0 | 1.75 | 6.0 | -1.2 | 1744 |
| 7 | 🇸🇪Thornemo Larsson, Marcus | 1697 | 0 | — | ½ | — | — | — | * | ½ | 1.0 | 1.25 | 5.0 | +1.0 | 1727 |
| 8 | 🇸🇪Linden, Peter | 1880 | — | 0 | 0 | — | — | — | ½ | * | 0.5 | 0.50 | 5.5 | -21.8 | 1576 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Ohlsson, MikaelSWE+9.42.0 pts · #3
- 2Arbman, JanSWE+8.41.0 pts · #6
- 3Mattsson, ViggoSWE+7.82.5 pts · #2
Top rating losers
- 1Linden, PeterSWE-21.80.5 pts · #8
- 2Larsson, Anders 1953SWE-4.81.5 pts · #4
- 3Lindberg, CajsaSWE-1.21.0 pts · #5
Biggest upsets
- R7+125 Elo gap