Jan Bosak
CZE · FIDE ID 314692 · 37 tournament games since 2021
Standard
2045
#767 in CZE (active)
Rapid
2021
#657 in CZE (active)
Blitz
2017
#557 in CZE (active)
Score
55%
16 W · 9 D · 12 L
Opp. avg
2005
Last 37 games
Last game
2026-08-13
FIDE Open Stare Mesto
Prep summary
- As White: 1.Nf3 in 41% of games (scores 64%), otherwise 1.d4 (24%).
- Against 1.e4: 1...e6 in 12 of 15 games (French Defense), scoring 46%.
- Weak spot: French Defense: Tarrasch Variation, Modern System as Black, only 0% in 4 games.
- Comfort zone: French Defense: Exchange Variation as Black, 80% in 5 games.
- By opponent strength: 23% against higher-rated players, 79% against lower-rated.
- By colour: 71% with White, 43% with Black.
Based on 37 over-the-board games (21 classical). 17 with White (71%), 20 with Black (43%).
Openings as White
First move
| 1.Nf3 | 7 | 64% |
| 1.d4 | 4 | 63% |
| 1.c4 | 4 | 75% |
| 1.e4 | 2 | 100% |
Most played
| Opening | Games | Score |
|---|---|---|
| English Opening: Mikenas-Carls Variation | 2 | 75% |
| Sicilian Defense: Alapin Variation | 1 | 100% |
| French Defense: Advance Variation, Euwe Variation | 1 | 100% |
| Queen's Gambit Declined: Ragozin Defense | 1 | 0% |
| Zukertort Opening: Pirc Invitation | 1 | 100% |
Openings as Black
Against 1.e4 (15 games)
| 1...e6 French Defense | 12 | 46% |
| 1...e5 King's Pawn Game | 3 | 33% |
Against 1.d4 (1 game)
| 1...Nf6 Indian Defense | 1 | 50% |
Most played
| Opening | Games | Score |
|---|---|---|
| French Defense: Exchange Variation | 5 | 80% |
| French Defense: Tarrasch Variation, Modern System | 4 | 0% |
| French Defense: King's Indian Attack | 2 | 50% |
| Scotch Game: Classical Variation | 1 | 0% |
| Ruy Lopez: Morphy Defense, Arkhangelsk Variation | 1 | 100% |
Recent games
| Date | Opponent and event | Result |
|---|---|---|
| 2026-08-13 | Arsenii Iankin (2163) FIDE Open Stare Mesto | L |
| 2026-04-04 | Ondrej Ramis (1954) Memoriál Vratislava Hory 2026 | Open A · classical | W |
| 2026-04-03 | Tymofii Bokhnak (2239) Memoriál Vratislava Hory 2026 | Open A · classical | L |
| 2026-04-03 | Dominika Stochnialek (1899) Memoriál Vratislava Hory 2026 | Open A · classical | W |
| 2026-04-02 | Bayarjavkhlan Delgerdalai (2399) Memoriál Vratislava Hory 2026 | Open A · classical | L |
| 2026-04-02 | Zdenek Pistek (1760) Memoriál Vratislava Hory 2026 | Open A · classical | W |
| 2025-09-13 | Georgis Vlachopulos (1927) Valašská Bystřice OPEN 2025 · classical | W |
| 2025-09-12 | Kamil Mikyska (1956) Valašská Bystřice OPEN 2025 · classical | L |
| 2025-09-11 | Jiri Brousek (1908) Valašská Bystřice OPEN 2025 · classical | W |
| 2025-09-10 | Vitezslav Musil (1939) Valašská Bystřice OPEN 2025 · classical | ½ |
Data: FIDE rating list (October 2026 list; national ranks count active players) and tournament games broadcast on Lichess since 2020 (open data, CC0). Results are matched to FIDE players by name or FIDE ID and may be incomplete. This page shows public chess results only. Is this you and you want the page removed? Email chessmoose1@gmail.com and we remove it.