OLOMOUC CHESS SUMMER 2025 - B1
10 players participated in this 9-round tournament, held from 17 Aug 2025 to 24 Aug 2025 in Olomouc, Czech Republic. 9 titled players from 7 federations. Top 10 Elo average was 2256, and top seed was Richard Jr. Biolek (🇨🇿 CZE, IM, 2397).
Ondrej Winter (🇨🇿 CZE, FM, 2274) won with 6.5/9, ahead of Dariusz Dziewonski (6.0) and Bayarjavkhlan Delgerdalai (6.0). Winter shared the lead from round 7 and broke clear in the final round.
- 🥇
- 🥈
- 🥉
How it unfolded
Top 10 · 9 roundsFM Ondrej Winter led from R9 onwards, the runner-up race stayed tight. Title race converged from 3 co-leaders at R4 to 1 by R9.
FM Ondrej Winter takes the sole lead (6.5/9).
FM Ondrej Winter drew with FM Bayarjavkhlan Delgerdalai (Black).
FM Ondrej Winter went unbeaten across 9 games (R1–R9).
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇨🇿FMWinter, Ondrej | 2274 | * | ½ | ½ | ½ | 1 | ½ | 1 | ½ | 1 | 1 | 6.5 | 25.25 | 38.5 | +35.2 | 2420 |
| 3 | 🇵🇱FMDziewonski, Dariusz | 2256 | ½ | * | ½ | ½ | ½ | ½ | 1 | ½ | 1 | 1 | 6.0 | 22.75 | 39.0 | +30.4 | 2381 |
| 2 | 🇨🇿FMDelgerdalai, Bayarjavkhlan | 2380 | ½ | ½ | * | ½ | ½ | ½ | ½ | 1 | 1 | 1 | 6.0 | 22.25 | 39.0 | -1.6 | 2367 |
| 6 | 🇨🇿IMBiolek, Richard Jr. | 2397 | ½ | ½ | ½ | * | ½ | ½ | ½ | 1 | ½ | 1 | 5.5 | 22.00 | 39.5 | -7.8 | 2320 |
| 5 | 🇪🇸IMCamarena Jimenez, Rufino | 2290 | 0 | ½ | ½ | ½ | * | ½ | 1 | 1 | 1 | ½ | 5.5 | 21.00 | 39.5 | +5.7 | 2332 |
| 4 | 🇩🇪IMPlischki, Sebastian | 2269 | ½ | ½ | ½ | ½ | ½ | * | 0 | 1 | 1 | 1 | 5.5 | 20.25 | 39.5 | +8.4 | 2335 |
| 7 | 🇨🇭WIMManko, Mariia | 2332 | 0 | 0 | ½ | ½ | 0 | 1 | * | ½ | 1 | 1 | 4.5 | 15.00 | 40.5 | -19.4 | 2248 |
| 8 | 🇨🇿WIMSochorova, Petra | 2076 | ½ | ½ | 0 | 0 | 0 | 0 | ½ | * | 1 | 1 | 3.5 | 10.50 | 41.5 | +25.0 | 2196 |
| 9 | 🇺🇸Cherniack, Alex | 2175 | 0 | 0 | 0 | ½ | 0 | 0 | 0 | 0 | * | ½ | 1.0 | 3.25 | 44.0 | -48.8 | 1914 |
| 10 | 🇬🇧FMWiley, Tom E | 2112 | 0 | 0 | 0 | 0 | ½ | 0 | 0 | 0 | ½ | * | 1.0 | 3.25 | 44.0 | -33.4 | 1921 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Winter, OndrejFMCZE+35.26.5 pts · #1
- 2Dziewonski, DariuszFMPOL+30.46.0 pts · #3
- 3Sochorova, PetraWIMCZE+25.03.5 pts · #8
- 1Cherniack, AlexUSA-48.81.0 pts · #9
- 2Wiley, Tom EFMENG-33.41.0 pts · #10
- 3Manko, MariiaWIMSUI-19.44.5 pts · #7