Jarni otevreny prebor SO SK OAZA Praha 2025 r8-9
Open SwissStandard
36 players participated in this 9-round tournament, held from 04 Jun 2025 to 11 Jun 2025 in Praha, Czech Republic. Top 10 Elo average was 1918, and top seed was Miroslav Kalous (🇨🇿 CZE, 2034).
Miroslav Kalous (🇨🇿 CZE, 2034) won with 2.0/9, ahead of Ladislav Kalvach (2.0) and Jindrich Novak (2.0). Kalous shared the lead from round 1, winning on tie-break.
The biggest upset came in round 9: Stepan Koukola (1412) beat Vaclav Repa (1746), a +334-point gap.
Location
🇨🇿Praha, Czech Republic
Dates
04 Jun 2025 → 11 Jun 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Federations · 1 represented
🇨🇿Czech Republic×36
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsTight race until R9; 5 players tied at 2.0/9, decided on Buchholz. Title race narrowed from 42 co-leaders at R4 to 5 at the finish.
Co-leaders
42
42
42
42
42
42
42
12
5
R9 · TIEBREAK CLUSTER
5 players finish on 2.0/9. Kalous takes the title on Buchholz Cut1 (1.5).
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Kalous, Miroslav | 2034 | CZE | F | F | F | F | F | F | F | +13N | +25B | 2.0 | 1.5 | 1.5 | 1.50 | 2671 | +11.4 |
| 2 | Kalvach, Ladislav | 1748 | CZE | F | F | F | F | F | F | F | +14B | +33N | 2.0 | 1.0 | 1.0 | 1.00 | 2344 | +9.8 |
| 3 | Novak, Jindrich | 1994 | CZE | F | F | F | F | F | F | F | +24B | +26N | 2.0 | 1.0 | 1.0 | 1.00 | 2732 | +16.4 |
| 4 | Vorsilka, Jiri | 1664 | CZE | F | F | F | F | F | F | F | +12N | +29N | 2.0 | 1.0 | 1.0 | 1.00 | 2530 | +23.6 |
| 5 | Koukola, Stepan | 1412 | CZE | F | F | F | F | F | F | F | +28N | +30B | 2.0 | 0.0 | 0.0 | 0.00 | 2481 | +65.6 |
| 6 | Sterba, Karel | 1841 | CZE | F | F | F | F | F | F | F | =8B | +16N | 1.5 | 2.5 | 2.5 | 1.75 | 1853 | +0.6 |
| 7 | Pokorny, Jan | 1798 | CZE | F | F | F | F | F | F | F | =10N | +17B | 1.5 | 2.0 | 2.0 | 1.50 | 1890 | +4.6 |
| 8 | Marko, Ondrej | 1638 | CZE | F | F | F | F | F | F | F | =6N | +31B | 1.5 | 1.5 | 1.5 | 0.75 | 2076 | +22.0 |
| 9 | Hajek, Jiri | 1791 | CZE | F | F | F | F | F | F | F | +32N | =24B | 1.5 | 0.5 | 0.5 | 0.25 | 2026 | +12.2 |
| 10 | Akerman, Jan | 1702 | CZE | F | F | F | F | F | F | F | =7B | =15N | 1.0 | 2.5 | 2.5 | 1.25 | 1777 | +4.2 |
| 11 | Silhan, Vladimir | 1444 | CZE | F | F | F | F | F | F | F | +20N | −18B | 1.0 | 2.0 | 2.0 | 1.00 | 1559 | +6.0 |
| 12 | Stanke, Petr | 1687 | CZE | F | F | F | F | F | F | F | −4B | +35N | 1.0 | 2.0 | 2.0 | 0.00 | 1700 | +0.8 |
| 13 | Marsalek, Dan | 1822 | CZE | F | F | F | F | F | F | F | −1B | +34N | 1.0 | 2.0 | 2.0 | 0.00 | 1923 | +10.0 |
| 14 | Barth, Vit | 1613 | CZE | F | F | F | F | F | F | F | −2N | +36B | 1.0 | 2.0 | 2.0 | 0.00 | 948 | -6.4 |
| 15 | Pisa, Ivo | 1756 | CZE | F | F | F | F | F | F | F | =27N | =10B | 1.0 | 1.5 | 1.5 | 0.75 | 1775 | +1.0 |
| 16 | Poznicek, Antonin | 1681 | CZE | F | F | F | F | F | F | F | +35B | −6B | 1.0 | 1.5 | 1.5 | 0.00 | 1788 | +11.2 |
| 17 | Rektor, David | 1692 | CZE | F | F | F | F | F | F | F | +29B | −7N | 1.0 | 1.5 | 1.5 | 0.00 | 1785 | +10.0 |
| 18 | Jakus, Lubomir | 1582 | CZE | F | F | F | F | F | F | F | F | +11N | 1.0 | 1.0 | 1.0 | 1.00 | 2245 | +6.4 |
| 19 | Herynkova, Barbora | 1714 | CZE | F | F | F | F | F | F | F | F | +21N | 1.0 | 1.0 | 1.0 | 1.00 | 2376 | +6.2 |
| 20 | Cerny, Vlastimil | 1534 | CZE | F | F | F | F | F | F | F | −11B | +28B | 1.0 | 1.0 | 1.0 | 0.00 | 1531 | -0.2 |
| 21 | Rawlings, Benjamin | 1576 | CZE | F | F | F | F | F | F | F | +36N | −19B | 1.0 | 1.0 | 1.0 | 0.00 | 914 | -12.4 |
| 22 | Polak, Jiri | 1937 | CZE | F | F | F | F | F | F | F | +31N | F | 1.0 | 0.0 | 0.0 | 0.00 | 2724 | +9.6 |
| 23 | Papez, Oliver | 1633 | CZE | F | F | F | F | F | F | F | +30N | F | 1.0 | 0.0 | 0.0 | 0.00 | 2546 | +26.0 |
| 24 | Temirbek, Amirali | 1896 | CZE | F | F | F | F | F | F | F | −3N | =9N | 0.5 | 3.5 | 3.5 | 0.75 | 1701 | -20.0 |
| 25 | Pospech, Radim | 1919 | CZE | F | F | F | F | F | F | F | =26B | −1N | 0.5 | 2.5 | 2.5 | 0.25 | 1808 | -5.4 |
| 26 | Kovar, Josef | 1968 | CZE | F | F | F | F | F | F | F | =25N | −3B | 0.5 | 2.5 | 2.5 | 0.25 | 1765 | -10.6 |
| 27 | Vasicek, Martin | 1848 | CZE | F | F | F | F | F | F | F | =15B | F | 0.5 | 1.0 | 1.0 | 0.50 | 1756 | -2.6 |
| 28 | Soucek, Ivo | 1616 | CZE | F | F | F | F | F | F | F | −5B | −20N | 0.0 | 3.0 | 3.0 | 0.00 | 674 | -27.4 |
| 29 | Chaloupka, Josef | 1772 | CZE | F | F | F | F | F | F | F | −17N | −4B | 0.0 | 3.0 | 3.0 | 0.00 | 878 | -25.2 |
| 30 | Repa, Vaclav | 1746 | CZE | F | F | F | F | F | F | F | −23B | −5N | 0.0 | 3.0 | 3.0 | 0.00 | 723 | -30.6 |
| 31 | Simandl, Stanislav | 1924 | CZE | F | F | F | F | F | F | F | −22B | −8N | 0.0 | 2.5 | 2.5 | 0.00 | 988 | -52.8 |
| 32 | Vit, Zdenek | 1770 | CZE | F | F | F | F | F | F | F | −9B | F | 0.0 | 2.5 | 2.5 | 0.00 | 991 | -9.4 |
| 33 | Dobrylovsky, Jiri | 1475 | CZE | F | F | F | F | F | F | F | F | −2B | 0.0 | 2.0 | 2.0 | 0.00 | 948 | -3.4 |
| 34 | Plesnivy, Martin | 1811 | CZE | F | F | F | F | F | F | F | F | −13B | 0.0 | 2.0 | 2.0 | 0.00 | 1022 | -9.6 |
| 35 | Trefilik, Jiri | 1735 | CZE | F | F | F | F | F | F | F | −16N | −12B | 0.0 | 2.0 | 2.0 | 0.00 | 885 | -22.8 |
| 36 | Starodubtsev, Fylypp | 0 | CZE | F | F | F | F | F | F | F | −21B | −14N | 0.0 | 2.0 | 2.0 | 0.00 | 795 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Koukola, StepanCZE+65.62.0 pts · #4
- 2Papez, OliverCZE+26.01.0 pts · #20
- 3Vorsilka, JiriCZE+23.62.0 pts · #5
Top rating losers
- 1Simandl, StanislavCZE-52.80.0 pts · #26
- 2Repa, VaclavCZE-30.60.0 pts · #36
- 3Soucek, IvoCZE-27.40.0 pts · #27
Biggest upsets
- R9+334 Elo gap
- R9+286 Elo gap
- R8+204 Elo gap