Jonas Irber
CZE · FIDE ID 23765429 · 30 tournament games since 2023
Standard
1632
#4653 in CZE (active)
Rapid
1603
#4174 in CZE (active)
Blitz
–
Unrated
Score
20%
4 W · 4 D · 22 L
Opp. avg
1697
Last 30 games
Last game
2026-06-28
Open Klatovy 2026 | Open B
Prep summary
- As White: 1.e4 in 53% of games (scores 6%), otherwise 1.d4 (47%).
- Against 1.e4: 1...c5 in 6 of 8 games (Sicilian Defense), scoring 17%.
Based on 30 over-the-board games (15 classical · 13 blitz). 15 with White (17%), 15 with Black (23%).
Openings as White
First move
| 1.e4 | 8 | 6% |
| 1.d4 | 7 | 29% |
Most played
| Opening | Games | Score |
|---|---|---|
| Sicilian Defense: Four Knights Variation | 2 | 25% |
| Grünfeld Defense: Exchange Variation, Modern Exchange Variation | 1 | 50% |
| Queen's Gambit Declined: Neo-Orthodox Variation, Main Line | 1 | 0% |
| Slav Defense | 1 | 0% |
| Queen's Gambit Declined: Queen's Knight Variation | 1 | 50% |
Openings as Black
Against 1.e4 (8 games)
| 1...c5 Sicilian Defense | 6 | 17% |
| 1...e6 French Defense | 2 | 0% |
Against 1.d4 (2 games)
| 1...c6 Queen's Pawn Game | 1 | 0% |
| 1...d5 Queen's Pawn Game | 1 | 0% |
Most played
| Opening | Games | Score |
|---|---|---|
| King's Indian Attack | 1 | 100% |
| King's Indian Attack, with e6 | 1 | 100% |
| Sicilian Defense: Modern Variations | 1 | 100% |
| Queen's Pawn Game | 1 | 0% |
| Sicilian Defense: Taimanov Variation | 1 | 0% |
Recent games
| Date | Opponent and event | Result |
|---|---|---|
| 2026-06-28 | Jindrich Rezac (1830) Open Klatovy 2026 | Open B | ½ |
| 2025-11-01 | Martin Dlouhy (1716) MČech mládeže do 16 let 2025 - HD12 · classical | L |
| 2025-10-31 | Teodor Cejchan (1652) MČech mládeže do 16 let 2025 - HD12 · classical | W |
| 2025-10-30 | Ivan Menkov (1664) MČech mládeže do 16 let 2025 - HD12 · classical | L |
| 2025-10-29 | Vojtech Vratny (1602) MČech mládeže do 16 let 2025 - HD12 · classical | W |
| 2025-10-28 | Dmitri Bukovsky (1715) MČech mládeže do 16 let 2025 - HD12 · classical | ½ |
| 2025-10-27 | Sandra Gajdac MČech mládeže do 16 let 2025 - HD12 · classical | W |
| 2025-10-27 | Anna Drahosova (1419) MČech mládeže do 16 let 2025 - HD12 · classical | W |
| 2025-10-26 | Jindrich Trejbal (1778) MČech mládeže do 16 let 2025 - HD12 · classical | L |
| 2025-01-30 | Beata Brezikova (1792) Olympiáda dětí a mládeže 2025 | blesk družstev · blitz | L |
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.