FIDE Open Alfonska 2025
Open SwissStandard
21 players participated in this 9-round tournament, held from 16 Aug 2025 to 24 Aug 2025 in Benecko, Czech Republic. Top 10 Elo average was 1745, and top seed was David Ocelak (🇨🇿 CZE, 1969).
Katerina Kammova (🇨🇿 CZE, 1885) won with 6.5/9, ahead of Jan Krelina (6.0) and Jan Adamek (6.0). Kammova shared the lead from round 6 and won solo starting round 8.
The biggest upset came in round 6: Petr Simunek (1598) beat Jan Krelina (1805), a +207-point gap.
Location
🇨🇿Benecko, Czech Republic
Dates
16 Aug 2025 → 24 Aug 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Federations · 1 represented
🇨🇿Czech Republic×19
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsKaterina Kammova led from R8; +0.5-point edge over the runner-up.
Co-leaders
10
3
1
1
1
4
4
1
1
R8 · LEADER CHANGE22 Aug
Katerina Kammova takes the sole lead (6.0/8).
R4 · HEAD-TO-HEAD · WINNER VS 2ND
Katerina Kammova beat Jan Adamek (White).
R1–R9 · UNBEATEN
Katerina Kammova went unbeaten across 9 games (R1–R9).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Katerina Kammova | * | 1 | ½ | ½ |
| 2Jan Adamek | 0 | * | ½ | ½ |
| 3David Ocelak | ½ | ½ | * | 0 |
| 4Jan Krelina | ½ | ½ | 1 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Kammova, Katerina | 1885 | CZE | +9N | =13B | +7N | +3B | =2B | =4N | =5N | +6B | =8N | 6.5 | 45.0 | 49.0 | 35.50 | 1939 | +24.8 |
| 2 | Krelina, Jan | 1805 | CZE | +17N | +6B | +5N | +4B | =1N | −9B | =7N | =8B | =3B | 6.0 | 45.5 | 49.0 | 32.25 | 1871 | +30.8 |
| 3 | Adamek, Jan | 1749 | CZE | +12N | =4B | +13N | −1N | +6B | −5B | +10N | +9B | =2N | 6.0 | 44.0 | 48.0 | 30.00 | 1848 | +47.6 |
| 4 | Ocelak, David | 1969 | CZE | +15B | =3N | +10B | −2N | +13B | =1B | −8N | +5B | +9N | 6.0 | 43.5 | 47.5 | 29.75 | 1906 | -15.6 |
| 5 | Beneda, Marek | 1805 | CZE | +16B | +10N | −2B | +14N | =9B | +3N | =1B | −4N | =7B | 5.5 | 44.0 | 47.5 | 27.00 | 1786 | -2.3 |
| 6 | Vanacek, Jan | 1588 | CZE | +21B | −2N | +11B | +16N | −3N | +10B | =9N | −1N | +14B | 5.5 | 40.5 | 40.5 | 19.50 | 1660 | +24.4 |
| 7 | Fort, Hugo | 1764 | CZE | +19B | +18N | −1B | −9N | =14B | +16N | =2B | +13N | =5N | 5.5 | 37.0 | 39.0 | 19.75 | 1697 | -22.4 |
| 8 | Horvath, Michal | 0 | CZE | −14B | +19N | −16B | =20N | +18B | +13N | +4B | =2N | =1B | 5.5 | 34.5 | 35.5 | 21.25 | 1705 | 0.0 |
| 9 | Simunek, Petr | 1598 | CZE | −1B | +14N | +18B | +7B | =5N | +2N | =6B | −3N | −4B | 5.0 | 45.0 | 47.5 | 23.50 | 1756 | +61.2 |
| 10 | Straka, Rene | 1601 | CZE | +20N | −5B | −4N | +21B | +12N | −6N | −3B | +18B | +11B | 5.0 | 35.5 | 35.5 | 12.50 | 1495 | -28.4 |
| 11 | Vratil, Tomas | 0 | CZE | −13N | +17B | −6N | =12B | =20B | =14N | +16B | +15B | −10N | 4.5 | 34.0 | 35.0 | 15.75 | 1559 | 0.0 |
| 12 | Rudova, Jana | 1564 | CZE | −3B | =15N | +19B | =11N | −10B | =17N | +18B | =14N | =13B | 4.5 | 33.5 | 35.5 | 14.50 | 1525 | -15.6 |
| 13 | Ocelak, Lukas | 1688 | CZE | +11B | =1N | −3B | +15N | −4N | −8B | +17N | −7B | =12N | 4.0 | 42.5 | 46.0 | 17.50 | 1661 | -14.4 |
| 14 | Levinsky, Jonatan | 1479 | CZE | +8N | −9B | +21N | −5B | =7N | =11B | =15N | =12B | −6N | 4.0 | 40.0 | 40.0 | 14.75 | 1454 | -10.0 |
| 15 | Chocholac, Josef | 1565 | CZE | −4N | =12B | +17N | −13B | =16B | +20N | =14B | −11N | =19N | 4.0 | 32.0 | 33.0 | 11.50 | 1542 | -14.4 |
| 16 | Vanacek, Pavel | 1505 | CZE | −5N | +20B | +8N | −6B | =15N | −7B | −11N | =19B | =17N | 3.5 | 36.0 | 37.0 | 11.25 | 1418 | -29.2 |
| 17 | Prokop, Antonin | 1482 | CZE | −2B | −11N | −15B | =18N | +19N | =12B | −13B | +20N | =16B | 3.5 | 31.0 | 32.0 | 8.25 | 1473 | -5.6 |
| 18 | Pleskot, Vaclav | 0 | CZE | F | −7B | −9N | =17B | −8N | +19B | −12N | −10N | +20B | 2.5 | 32.0 | 32.0 | 4.75 | 1385 | 0.0 |
| 19 | Broz, Jan | 1460 | CZE | −7N | −8B | −12N | F | −17B | −18N | +20B | =16N | =15B | 2.0 | 30.0 | 30.0 | 4.75 | 1336 | -30.8 |
| 20 | FIDE 23792965 | 0 | — | −10B | −16N | F | =8B | =11N | −15B | −19N | −17B | −18N | 1.0 | 30.5 | 30.5 | 5.00 | 723 | 0.0 |
| 21 | FIDE 23792973 | 0 | — | −6N | F | −14B | −10N | F | F | F | F | F | 0.0 | 14.5 | 14.5 | 0.00 | 756 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Simunek, PetrCZE+61.25.0 pts · #9
- 2Adamek, JanCZE+47.66.0 pts · #1
- 3Krelina, JanCZE+30.86.0 pts · #5
Top rating losers
- 1Broz, JanCZE-30.82.0 pts · #19
- 2Vanacek, PavelCZE-29.23.5 pts · #17
- 3Straka, ReneCZE-28.45.0 pts · #18
Biggest upsets
- R6+207 Elo gap
- R4+166 Elo gap
- R4+164 Elo gap