CChessStats

Tonsberg Hostturnering 2025

Open SwissStandard

23 players participated in this 7-round tournament, held from 06 Oct 2025 to 03 Nov 2025 in Tonsberg, Norway. Top 10 Elo average was 1834, and top seed was Oystein Johnsen (🇳🇴 NOR, 1949).

Terje Skaug (🇳🇴 NOR, 1745) won with 5.5/7, ahead of Harald Thorstensen (5.0) and Eirik Norbakken (5.0). Skaug clinched sole first place in the final round.

The biggest upset came in round 7: Terje Kristiansen (1576) beat Harald Thorstensen (1710), a +134-point gap.

Location
🇳🇴Tonsberg, Norway
Dates
06 Oct 2025 → 03 Nov 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Top seed
🇳🇴Oystein Johnsen1949
Avg top 10
1,834
Participants
23
Federations · 1 represented
🇳🇴Norway×23
Top 3

How it unfolded

Top 6 · 7 rounds

Terje Skaug led from R7; +0.5-point edge over the runner-up.

Co-leaders
8
3
1
1
1
1
1
23.55.57R1R2R3R4R5R6R7Skaug takes lead
Skaug5.5Thorstensen5Norbakken5Kristiansen5Johnsen4.5Artemjevs4.5
R7 · LEADER CHANGE03 Nov

Terje Skaug takes the sole lead (5.5/7).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Terje Skaug beat Harald Thorstensen (Black).

WIN STREAKS · 3 top finishers

Terje Skaug 3 wins (R5–R7)Harald Thorstensen 5 wins (R1–R5)Eirik Norbakken 3 wins (R3–R5)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Terje Skaug*
1
—
1
2Harald Thorstensen
0
*—
0
3Eirik Norbakken——*—
4Terje Kristiansen
0
1
—*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Skaug, Terje1745NOR+4N−8N+16B=11B+18N+2N+15B5.523.525.519.751875+30.0
2Thorstensen, Harald1710NOR+23N+10B+8N+15B+14N−1B−4N5.024.524.514.001761+10.8
3Norbakken, Eirik1786NOR=9B−6N+13B+12N+17B=5N+21B5.022.023.014.252030+46.4
4Kristiansen, Terje1576NOR−1B+20B−10N+23N+11B+15N+2B5.022.022.013.001692+15.8
5Johnsen, Oystein1949NOR+6B=13N−12B+17N=21B=3B+9N4.522.523.515.251950+0.6
6Artemjevs, Adrian1879NOR−5N+3B−9N+21N+13B=12N+17B4.522.523.513.251960+31.6
7Halvorsen, Terje1504NOR+20N−15B=14N−10B+8B+11N+18N4.519.521.012.751533+2.6
8Larsen, Richard1631NOR+11N+1B−2B−14B−7N+16N+10B4.025.528.515.501644+4.8
9Kopperud, Vidar Aleksander1825NOR=3N+21N+6B−13N=12B+17N−5B4.023.024.011.751916+18.2
10Haugan, Kristoffer1619NOR+22B−2N+4B+7N−15N=14B−8N3.525.026.012.251551-12.0
11Mishunov, Denys0NOR−8B+18N+19B=1N−4N−7B+14N3.524.526.510.2515680.0
12Syvertsen, Rolf E1893NOR=21B+17B+5N−3B=9N=6B−13N3.523.524.511.251856-7.0
13Helgerud, Anders1832NOR−17N=5B−3N+9B−6N+21N+12B3.523.524.510.751865+6.6
14Froyland, Henrik1629NOR=16N+23B=7B+8N−2B=10N−11B3.523.523.59.501648+4.2
15Gurmark, Erik1599NOR+18B+7NF−2N+10B−4B−1N3.025.526.510.001559-5.6
16Pedersen, Helge Fischer1658NOR=14B−22N−1N+19B=20N−8B+23B3.017.517.54.501618-4.8
17Terpugov, Sergii1902NOR+13B−12N+21B−5B−3N−9B−6N2.025.026.04.501697-78.0
18Bjonnes, Torbjorn0NOR−15N−11B+23N+20B−1BF−7B2.020.020.01.5013750.0
19Berntsen, Frode1662NORFF−11N−16N+23BF+20N2.010.010.01.501542-6.2
20Nass, Noah Tobias0NOR−7B−4NF−18N=16B+23N−19B1.516.516.51.5014160.0
21Scheibe, Ulrich1822NOR=12N−9B−17N−6B=5N−13B−3N1.025.027.04.001558-41.6
22Baumann, Jorgen0NOR−10N+16BF————1.06.59.53.0016390.0
23Orac, Yurii1425NOR−2B−14N−18B−4B−19N−20B−16N0.020.522.00.00847-44.4

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets