Prebor OAZY 2025 - podzim r4-7
Open SwissStandard
50 players participated in this 7-round tournament, held from 04 Nov 2025 to 26 Nov 2025 in Praha, Czech Republic. 3 federations represented. Top 10 Elo average was 1936, and top seed was Jindrich Novak (🇨🇿 CZE, 2023).
Karel Zajicek (🇨🇿 CZE, 1972) won with 4.0/7, ahead of Alim Nurakyn (4.0) and Jiri Vorsilka (3.5). Zajicek shared the lead from round 1, winning on tie-break.
The biggest upset came in round 7: Alim Nurakyn (1483) beat Radim Pospech (1900), a +417-point gap.
Location
🇨🇿Praha, Czech Republic
Dates
04 Nov 2025 → 26 Nov 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Federations · 3 represented
🇨🇿Czech Republic×48
🇺🇸United States of America×1
🇰🇿Kazakhstan×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsTight race until R7; 2 players tied at 4.0/7, decided on Buchholz. Title race narrowed from 18 co-leaders at R4 to 2 at the finish.
Co-leaders
52
52
52
18
6
5
2
R7 · TIEBREAK CLUSTER
2 players finish on 4.0/7. Zajicek takes the title on Buchholz Cut1 (10.0).
WIN STREAKS · 2 top finishers
Karel Zajicek 4 wins (R4–R7)Alim Nurakyn 4 wins (R4–R7)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Karel Zajicek | * | — | — | — |
| 2Alim Nurakyn | — | * | — | 1 |
| 3Jiri Vorsilka | — | — | * | — |
| 4Radim Pospech | — | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Zajicek, Karel | 1972 | CZE | F | F | F | +6N | +26B | +9B | +5N | 4.0 | 10.0 | 10.0 | 10.00 | 2623 | +24.4 |
| 2 | Nurakyn, Alim | 1483 | KAZ | F | F | F | +13N | +10B | +32N | +4B | 4.0 | 9.5 | 9.5 | 9.50 | 2619 | +136.8 |
| 3 | Vorsilka, Jiri | 1611 | CZE | F | F | F | +47B | =29N | +23B | +37N | 3.5 | 5.0 | 5.0 | 4.25 | 1914 | +22.2 |
| 4 | Pospech, Radim | 1900 | CZE | F | F | F | +31N | +16B | +12B | −2N | 3.0 | 10.0 | 10.0 | 6.00 | 1914 | +3.6 |
| 5 | Cermak, Milan | 1921 | CZE | F | F | F | +27B | +15N | +11N | −1B | 3.0 | 10.0 | 10.0 | 6.00 | 2078 | +16.2 |
| 6 | Hajek, Jiri | 1789 | CZE | F | F | F | −1B | +38N | +17B | +30N | 3.0 | 8.5 | 8.5 | 4.50 | 2039 | +25.8 |
| 7 | Plesnivy, Martin | 1761 | CZE | F | F | F | +29N | +27B | +19N | −12N | 3.0 | 7.5 | 7.5 | 5.00 | 1987 | +23.2 |
| 8 | Stanke, Petr | 1685 | CZE | F | F | F | +48N | +42N | =15B | =45B | 3.0 | 4.0 | 4.0 | 2.75 | 1874 | +15.0 |
| 9 | Pacovsky, Ota | 1770 | CZE | F | F | F | =10N | +18B | −1N | +34B | 2.5 | 10.0 | 10.0 | 4.75 | 2014 | +25.2 |
| 10 | Koper, Stefan | 1843 | CZE | F | F | F | =9B | −2N | +28B | +33N | 2.5 | 9.5 | 9.5 | 4.25 | 1720 | -11.0 |
| 11 | Polak, Jiri | 1951 | CZE | F | F | F | +30B | =12N | −5B | +20N | 2.5 | 9.0 | 9.0 | 4.75 | 2004 | +5.6 |
| 12 | Budil, Vaclav | 1958 | CZE | F | F | F | +45N | =11B | −4N | +7B | 2.5 | 9.0 | 9.0 | 4.75 | 1970 | +2.4 |
| 13 | Pisa, Ivo | 1741 | CZE | F | F | F | −2B | +24N | =46N | +28B | 2.5 | 8.0 | 8.0 | 3.75 | 1598 | -13.6 |
| 14 | Koukola, Stepan | 1597 | CZE | F | F | F | −28B | =40B | +41N | +46B | 2.5 | 4.0 | 4.0 | 2.00 | 1485 | -18.4 |
| 15 | Sterba, Karel | 1823 | CZE | F | F | F | +20N | −5B | =8N | =32B | 2.0 | 9.5 | 9.5 | 4.25 | 1792 | -3.6 |
| 16 | Akerman, Jan | 1685 | CZE | F | F | F | +22B | −4N | =26N | =27B | 2.0 | 8.0 | 8.0 | 3.50 | 1711 | +1.8 |
| 17 | Poznicek, Antonin | 1819 | CZE | F | F | F | =18N | =30B | −6N | +31B | 2.0 | 8.0 | 8.0 | 3.25 | 1883 | +12.8 |
| 18 | Novak, Jindrich | 2023 | CZE | F | F | F | =17B | −9N | +37B | =19B | 2.0 | 7.5 | 7.5 | 3.00 | 1798 | -22.6 |
| 19 | Bobrakov-Timoskin, Alexandr | 1825 | CZE | F | F | F | +37B | =34N | −7B | =18N | 2.0 | 7.5 | 7.5 | 2.75 | 1850 | +2.6 |
| 20 | Kalvach, Ladislav | 1770 | CZE | F | F | F | −15B | +21N | +45B | −11B | 2.0 | 7.0 | 7.0 | 2.50 | 1800 | +3.6 |
| 21 | Bobrakov-Timoskin, Denis | 1541 | CZE | F | F | F | +40N | −20B | −31N | +36B | 2.0 | 6.0 | 6.0 | 2.50 | 1610 | +14.0 |
| 22 | Horky, Karel | 0 | CZE | F | F | F | −16N | =35B | +39N | =26B | 2.0 | 6.0 | 6.0 | 2.50 | 1667 | 0.0 |
| 23 | Veselsky, Jan | 1542 | CZE | F | F | F | −39N | +49B | −3N | +38B | 2.0 | 6.0 | 6.0 | 1.50 | 1474 | -5.6 |
| 24 | Clifton, Alexander J | 1506 | USA | F | F | F | −38B | −13B | +49N | +39B | 2.0 | 5.0 | 5.0 | 1.50 | 1517 | -1.0 |
| 25 | Trefilik, Jiri | 1690 | CZE | F | F | F | F | +44N | +47B | F | 2.0 | 1.5 | 1.5 | 1.50 | 2481 | +9.8 |
| 26 | Pokorny, Jan | 1812 | CZE | F | F | F | =33B | −1N | =16B | =22N | 1.5 | 9.5 | 9.5 | 2.75 | 1653 | -12.8 |
| 27 | Skaba, Ladislav | 1794 | CZE | F | F | F | −5N | −7N | +29B | =16N | 1.5 | 9.5 | 9.5 | 2.50 | 1655 | -15.4 |
| 28 | Cerny, Vlastimil | 1541 | CZE | F | F | F | +14N | =31B | −10N | −13N | 1.5 | 9.0 | 9.0 | 3.25 | 1641 | +8.8 |
| 29 | Jakus, Lubomir | 1592 | CZE | F | F | F | −7B | =3B | −27N | +40B | 1.5 | 9.0 | 9.0 | 2.75 | 1575 | -3.4 |
| 30 | Kucera, Tomas | 1986 | CZE | F | F | F | −11N | =17N | +33B | −6B | 1.5 | 9.0 | 9.0 | 2.50 | 1722 | -27.6 |
| 31 | Rektor, David | 1733 | CZE | F | F | F | −4B | =28N | +21B | −17N | 1.5 | 8.5 | 8.5 | 2.75 | 1613 | -26.4 |
| 32 | Dolezel, Jiri | 1790 | CZE | F | F | F | +35N | F | −2B | =15N | 1.5 | 8.0 | 8.0 | 2.50 | 1642 | -22.0 |
| 33 | Marko, Ondrej | 1679 | CZE | F | F | F | =26N | +43B | −30N | −10B | 1.5 | 6.5 | 6.5 | 1.75 | 1805 | +11.4 |
| 34 | Borovsky, Ivan | 1836 | CZE | F | F | F | +43N | =19B | F | −9N | 1.5 | 5.5 | 5.5 | 2.00 | 1839 | +0.2 |
| 35 | Laube, Tomas | 1592 | CZE | F | F | F | −32B | =22N | +42B | −43N | 1.5 | 5.5 | 5.5 | 2.00 | 1057 | -14.4 |
| 36 | Skalicky, Jindrich | 1458 | CZE | F | F | F | =41N | +50B | F | −21N | 1.5 | 3.5 | 3.5 | 1.00 | 1550 | +5.0 |
| 37 | Repa, Vaclav | 1780 | CZE | F | F | F | −19N | +39B | −18N | −3B | 1.0 | 8.5 | 8.5 | 1.00 | 1566 | -22.4 |
| 38 | Barth, Vit | 1609 | CZE | F | F | F | +24N | −6B | F | −23N | 1.0 | 7.0 | 7.0 | 2.00 | 1495 | -9.2 |
| 39 | Vasko, Pavel | 1576 | CZE | F | F | F | +23B | −37N | −22B | −24N | 1.0 | 7.0 | 7.0 | 2.00 | 1492 | -7.0 |
| 40 | Dobrylovsky, Jiri | 1480 | CZE | F | F | F | −21B | =14N | =48B | −29N | 1.0 | 6.5 | 6.5 | 1.50 | 1376 | -10.4 |
| 41 | Martinec, Ondrej | 0 | CZE | F | F | F | =36B | =47N | −14B | −42N | 1.0 | 5.5 | 5.5 | 1.00 | 1335 | 0.0 |
| 42 | Budar, Jakub | 0 | CZE | F | F | F | F | −8B | −35N | +41B | 1.0 | 5.5 | 5.5 | 1.00 | 839 | 0.0 |
| 43 | Kovarik, David | 1924 | CZE | F | F | F | −34B | −33N | F | +35B | 1.0 | 4.5 | 4.5 | 1.50 | 1577 | -26.2 |
| 44 | Fekar, Tomas | 1681 | CZE | F | F | F | F | −25B | F | +48N | 1.0 | 3.0 | 3.0 | 0.50 | 1614 | -7.2 |
| 45 | Marsalek, Dan | 1886 | CZE | F | F | F | −12B | F | −20N | =8N | 0.5 | 9.0 | 9.0 | 1.50 | 1531 | -52.8 |
| 46 | Silhan, Vladimir | 1432 | CZE | F | F | F | F | F | =13B | −14N | 0.5 | 6.5 | 6.5 | 1.25 | 1476 | +1.6 |
| 47 | Nesterov, Stepan | 0 | CZE | F | F | F | −3N | =41B | −25N | F | 0.5 | 6.5 | 6.5 | 0.50 | 851 | 0.0 |
| 48 | Hlavacek, Bedrich | 1538 | CZE | F | F | F | −8B | F | =40N | −44B | 0.5 | 5.5 | 5.5 | 0.50 | 1342 | -13.8 |
| 49 | Neckar, Antonin | 0 | CZE | F | F | F | F | −23N | −24B | =50N | 0.5 | 4.5 | 4.5 | 0.25 | 1270 | 0.0 |
| 50 | Stanke, Vilem | 1558 | CZE | F | F | F | F | −36N | F | =49B | 0.5 | 2.0 | 2.0 | 0.25 | 658 | -12.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Nurakyn, AlimKAZ+136.84.0 pts · #2
- 2Hajek, JiriCZE+25.83.0 pts · #5
- 3Pacovsky, OtaCZE+25.22.5 pts · #10
Top rating losers
- 1Marsalek, DanCZE-52.80.5 pts · #46
- 2Kucera, TomasCZE-27.61.5 pts · #24
- 3Rektor, DavidCZE-26.41.5 pts · #23
Biggest upsets
- R7+417 Elo gap
- R5+360 Elo gap
- R6+307 Elo gap