CChessStats

8. Open Bohumin 2025 D - S50 plus

Open SwissStandard

22 players participated in this 9-round tournament, held from 28 Jun 2025 to 05 Jul 2025 in Bohumin, Czech Republic. 5 titled players from 3 federations. Top 10 Elo average was 1943, and top seed was Josef Mudrak (🇨🇿 CZE, FM, 2206).

Jaroslav Cempel (🇨🇿 CZE, FM, 1919) won with 6.5/9, ahead of Kazimierz Drabiniok (6.5) and Marek Kozelsky (6.0). Cempel shared the lead from round 6, winning on tie-break.

The biggest upset came in round 6: Wojciech Szymanski (1597) beat Zdenek Olsar (1917), a +320-point gap.

Location
🇨🇿Bohumin, Czech Republic
Dates
28 Jun 2025 → 05 Jul 2025
Time control
Standard: 90min/40moves+30min/end+30sec increment per move starting from move 1
System
Swiss · 9 rounds
Top seed
🇨🇿FMJosef Mudrak2206
Avg top 10
1,943
Participants
22
Titled players · 5
FM×5
Federations · 3 represented
🇨🇿Czech Republic×15
🇵🇱Poland×6
🇺🇦Ukraine×1
Top 3

How it unfolded

Top 6 · 9 rounds

Tight race until R8; 2 players tied at 6.5/9, decided on Buchholz. Title race narrowed from 5 co-leaders at R4 to 2 at the finish.

Co-leaders
9
3
1
5
1
3
4
1
2
2.54.579R1R2R3R4R5R6R7R8R9Drabiniok takes leadCempel takes lead
Cempel6.5Drabiniok6.5Mudrak6Kozelsky6Olsar5.5Raszka5.5
R5 · LEADER CHANGE01 Jul

FM Kazimierz Drabiniok takes the sole lead (4.0/5).

R9 · TIEBREAK CLUSTER

2 players finish on 6.5/9. Cempel takes the title on Buchholz Cut1 (42.5).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

FM Jaroslav Cempel drew with FM Kazimierz Drabiniok (White).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1FMJaroslav Cempel*
½
½
½
2FMKazimierz Drabiniok
½
*
½
½
3FMJosef Mudrak
½
½
*
½
4Marek Kozelsky
½
½
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7R8R9PtsBu C1BuSBPerfΔ
1Cempel, JaroslavFM1919CZE+8N+16B=3N=2B=6N+9B=4N+5B=10N6.542.546.032.002084+38.6
2Drabiniok, KazimierzFM1845POL+21N=3B+10N=1N+13B=4B=5N=6B+12N6.541.042.527.752049+48.2
3Kozelsky, Marek1971CZE+15B=2N=1B−5N+14B+10N+12B=4N=6B6.041.545.027.251999+8.8
4Mudrak, JosefFM2206CZE+17N+18B+6NF=5B=2N=1B=3B+8N6.041.541.529.252104-14.2
5Olsar, JaroslavFM1976CZE−10N+8B+14N+3B=4N+6B=2B−1N=7B5.544.047.528.251971+0.2
6Raszka, JanuszFM2048POL+7B+13N−4B+15N=1B−5N+11B=2N=3N5.543.046.525.501981-13.2
7Krampol, Vladimir1765CZE−6N−14B=21N−8B+20N+19B+13N+9B=5N5.031.533.016.001842+17.2
8Petrov, Nikolaj1754CZE−1B−5N=20B+7N−16B+21N+14N+17B−4B4.535.036.514.251842+18.6
9Koper, Stefan1850CZEFF+19B+22N=11B−1N+15B−7N+17B4.525.525.512.001860+3.4
10Szmek, Milan1763CZE+5B=19N−2B=11NF−3B=18N+16N=1B4.038.538.517.501861+20.6
11Maroszczyk, Wieslaw1820CZE=19BF=18N=10B=9N=17B−6N=13N+16B4.031.031.014.501832+2.6
12Szymanski, Wojciech1597POLFFF+20N+19B+18B−3N+15N−2B4.024.024.011.501932+50.4
13Szotkowski, Bohuslav1847CZE+14N−6B+17N=18B−2N−16N−7B=11B=15N3.535.038.512.501758-22.4
14Chrobak, Piotr1750POL−13B+7N−5B+16B−3N−15N−8B+20N=19B3.534.536.011.501727-6.6
15Koci, Tomas1762CZE−3N+21B+16N−6B−18N+14B−9N−12B=13B3.534.035.510.251747-5.0
16Knopp, Rene1846CZE+22B−1N−15B−14N+8N+13B=17N−10B−11N3.533.033.09.751705-35.2
17Tomczyk, Piotr1792POL−4B+20N−13B=19N+21B=11N=16B−8N−9N3.530.532.08.251728-17.6
18Olsar, Zdenek1917CZE+20B−4N=11B=13N+15B−12N=10BFF3.526.526.510.751821-18.0
19Baraniuk, Andrej1590UKR=11N=10B−9N=17B−12N−7N−20B+21B=14N3.030.031.59.001620+5.8
20Novak, Borivoj1753CZE−18N−17B=8N−12B−7BF+19N−14B−21N1.528.528.55.251472-56.2
21Sieber, Bohumil1622CZE−2B−15N=7BF−17N−8BF−19N+20B1.527.527.54.001522-16.0
22Kwiatkowski, Zygmunt1656POL−16NFF−9BFFFFF0.012.012.00.001048-10.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
8. Open Bohumin 2025 D - S50 plus — Bohumin, Czech Republic | Chess Tournament Results | ChessStats