CChessStats

Seebach Weekend Open Classic A

Open SwissStandard

42 players participated in this 7-round tournament, held from 18 Oct 2025 to 19 Oct 2025 in Zurich, Switzerland. 1 titled players from 8 federations. Top 10 Elo average was 2111, and top seed was Francesco Antognini (🇨🇭 SUI, 2231).

Mihaly Koehalmi-Szabo (🇨🇭 SUI, 2078) won with 3.5/7, ahead of Jean-Claude Schmidig (3.5) and Gabriel Fernandes Barbosa Dos Santos (3.0). Koehalmi-Szabo shared the lead from round 4, winning on tie-break.

The biggest upset came in round 5: Luca Valsecchi (1804) beat Klaus Goldschmid (2007), a +203-point gap.

Location
🇨🇭Zurich, Switzerland
Dates
18 Oct 2025 → 19 Oct 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Top seed
Avg top 10
2,111
Participants
42
Titled players · 1
CM×1
Federations · 8 represented
🇨🇭Switzerland×30
🇩🇪Germany×5
🇵🇱Poland×2
🇷🇸Serbia×1
🇬🇷Greece×1
🇺🇦Ukraine×1
🇮🇪Ireland×1
🇮🇳India×1
Top 3

How it unfolded

Top 6 · 7 rounds

Tight race until R7; 2 players tied at 3.5/7, decided on Buchholz. Title race narrowed from 12 co-leaders at R4 to 2 at the finish.

Co-leaders
43
43
43
12
6
2
2
23.55.57R1R2R3R4R5R6R7
R7 · TIEBREAK CLUSTER

2 players finish on 3.5/7. Koehalmi-Szabo takes the title on Buchholz Cut1 (10.0).

WIN STREAKS · 3 top finishers

Mihaly Koehalmi-Szabo 3 wins (R4–R6)Jean-Claude Schmidig 3 wins (R4–R6)Tomasz Ingielewicz 3 wins (R5–R7)

R4 · LATE SURGE

Tomasz Ingielewicz was #31 at R4, climbed to #3 over the final stretch.

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Koehalmi-Szabo, Mihaly2078SUIFFF+3B+18N+9B=10N3.510.010.08.752444+66.8
2Schmidig, Jean-Claude1863SUIFFF+32N+5B+37N=15B3.57.57.56.252058+15.2
3Fernandes Barbosa Dos Santos, GabrielCM2210SUIFFF1N+24B+11N+8B3.010.010.06.502285+14.8
4Sterk, Jonas1919GERFFF=8B=7B+21N+20B3.09.09.06.502179+54.4
5Fuechslin, Tobias, Dr.1727SUIFFF+34B2N+32B+26N3.07.07.03.501914+39.6
6Ingielewicz, Tomasz1952SUIFFF17B+31N+22B+23B3.06.56.54.502057+20.8
7Angelovski, Emanuel2074SUIFFF=23B=4N+17B=9N2.59.09.05.502035-8.4
8Gontsul, Artem2054UKRFFF=4N+39B+12N3N2.59.09.04.502127+8.4
9Schoenbaechler, Anselm2054SUIFFF+38B+17N1N=7B2.58.58.53.752068+1.6
10Piacquadio, Riccardo Daniele2076SUIFFF=39N=12B+24N=1B2.58.08.04.752123+11.6
11Rotunno, Flavio2201SUIFFF+35N+20B3B=18N2.58.08.04.002126-12.0
12Fehr, Pascal1768SUIFFF+42B=10N8B+14B2.57.57.53.752068+30.0
13Uso I Cubertorer, Lluis1859SUIFFF+36B19N+29N=21B2.56.56.53.501881+3.2
14Mukhles, Aschraf1803SUIFFF+28B=33N+27B12N2.56.56.53.501920+12.4
15Oeztuerk, Ilhan1805SUIFFF=26B=25N+42B=2N2.56.56.53.251989+39.2
16Goldschmid, Klaus2007SUIFFF=33B27N+28B+19N2.56.06.04.001935-15.2
17Panos, Giannis1842GREFFF+6N9B7N+31B2.09.09.04.001984+14.6
18Zargarov, Mikayel2093SUIFFF=24N1B+23N=11B2.09.09.03.502064-6.0
19Schroers, Uwe1827GERFFF+29N+13B20N16B2.08.58.54.001963+14.4
20Agushi, Agim2019SUIFFF+31B11N+19B4N2.08.58.53.001951-7.4
21Bednarczuk, Jakub1795POLFFF=25B+38N4B=13N2.07.57.52.501893+21.6
22Wetterau, Jonathan1812GERFFF+40B+42N6NF2.03.53.50.502051+19.2
23Rossier, Gilles1943SUIFFF=7N+35B18B6N1.58.58.52.251892-6.2
24Mikavica, Mirko2035SRBFFF=18B3N10B+35N1.58.58.52.001957-8.6
25Arocha, Carlos1897SUIFFF=21N=15B31N=29B1.57.07.03.001768-14.8
26Baune, Konstantin1857SUIFFF=15N=37B=38N5B1.57.07.02.001690-37.2
27Valsecchi, Luca1804SUIFFF=30N+16B14NF1.56.56.53.251868+10.0
28Hajduk, Tomasz1854POLFFF14N=40B16N+34B1.56.56.51.251704-15.0
29Schefer, Anton1965GERFFF19B+41N13B=25N1.56.56.51.251768-22.0
30Campora, Christoph1795SUIFFF=27B+36NFF1.52.52.51.751874+4.2
31Trubini, Timon1856SUIFFF20N6B+25B17N1.08.58.51.501735-24.4
32Baisse, Rose1678SUIFFF2B=34N5N=36B1.08.58.51.001465-44.0
33Cotton, Gil1874SUIFFF=16N=14B35NF1.06.56.52.501744-10.6
34Schneider, Eliana Maylen1485SUIFFF5N=32B=36B28N1.06.56.51.001511+2.0
35Lupei, Denis1797GERFFF11B23N+33B24B1.06.56.51.001819+1.2
36Nazarenus, Sofie1557SUIFFF13N30B=34N=32N1.06.06.01.001512-11.6
37Dineen, Ryan1679IRLFFF=41B=26N2BF1.05.55.51.001727+7.2
38Berger, Stefan1896SUIFFF9N21B=26BF0.56.06.00.751629-19.6
39Antognini, Francesco2231SUIFFF=10B8NFF0.55.05.01.251872-18.8
40Kondzic, Ben1869SUIFFF22N=28NFF0.54.04.00.751641-24.0
41Shumilov, Ruslan1835SUIFFF=37N29BFF0.54.04.00.501629-21.2
42Suseenthiram.R1958INDFFF12N22B15NF0.08.08.00.00995-42.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets