Prepare against Jiri Kaser
Czechia · World #70,269 classical · FIDE ID 302090
When preparing against Jiri Kaser, expect 1.e4 in 100% of White games. Against 1.e4 the reply is 1...e5 (100% of games); against 1.d4, 1...d5 (100%).
Our database contains 31 games by Jiri Kaser, covering Jan 2009 to Jul 2026. Below you'll find Jiri Kaser's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jiri Kaser before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 1,820 | 1,836 | Mar 2025 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 31 | 6 | 9 | 16 | 19.4% |
| As White | 17 | 3 | 7 | 7 | 17.6% |
| As Black | 14 | 3 | 2 | 9 | 21.4% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jiri Kaser's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jiri Kaser's side.
First moves as White (17 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 17 | 100.0% | 38.2% |
Main lines as White
- 1.e4 — 100% of White games, 38.2% score
- …c5 (41% of these games) — Kaser usually continues Nc3 (28.6% score)
- …e5 (29% of these games) — Kaser usually continues Nf3 (50.0% score)
- …d6 (12% of these games) — Kaser usually continues d4 (0.0% score)
As Black against 1.e4 (12 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 12 | 100.0% | 25.0% |
As Black against 1.d4 (1 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 1 | 100.0% | 0.0% |
Jiri Kaser's chess games
All 31 games by Jiri Kaser in the Chess.ceo database (Jan 2009 - Jul 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 6 wins, 9 draws, 16 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B30 | Sicilian: Closed | 6 | 0/2/4 | 0.0% |
| C50 | Italian Game | 2 | 0/1/1 | 0.0% |
| B08 | Pirc Defense | 2 | 0/0/2 | 0.0% |
| C50 | Italian Game: Giuoco Pianissimo | 1 | 1/0/0 | 100.0% |
| C57 | Italian Game: Two Knights Defense | 1 | 0/1/0 | 0.0% |
| B01 | Scandinavian Defense: Modern Variation | 1 | 1/0/0 | 100.0% |
| B02 | Alekhine Defense | 1 | 0/1/0 | 0.0% |
| B90 | Sicilian: Najdorf | 1 | 1/0/0 | 100.0% |
| C44 | Center Game | 1 | 0/1/0 | 0.0% |
| C02 | French: Advance Variation | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C64 | Ruy Lopez: Classical | 2 | 0/1/1 | 0.0% |
| C45 | Scotch Game | 2 | 1/0/1 | 50.0% |
| C50 | Italian Game | 2 | 0/0/2 | 0.0% |
| C47 | Four Knights Game: Scotch Variation | 1 | 0/0/1 | 0.0% |
| C54 | Italian Game: Classical Variation | 1 | 1/0/0 | 100.0% |
| C56 | Italian Game: Scotch Gambit | 1 | 0/0/1 | 0.0% |
| D74 | Queen's Pawn Game | 1 | 0/0/1 | 0.0% |
| C27 | Bishop's Opening | 1 | 0/0/1 | 0.0% |
| C29 | Vienna Game | 1 | 0/0/1 | 0.0% |
| C22 | Center Game | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Sep 2010 | Pavel Klanica | 1,910 | 7th Zdar nad Sazavou Vysocina Open | C50 |
| Mar 2010 | Libor Luzik | 1,686 | Kouty nad Desnou Open B | B01 |
| Mar 2011 | Jan Tuma | 1,663 | Kouty nad Desnou Open A | B90 |
| Oct 2008 | Zdenka Simurdova | 1,620 | ch-CZE U16 | C54 |
| Mar 2009 | Patrik Krejci | 1,305 | ch-CZE Juniors Open B | C45 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Kouty nad Desnou Open A | 2011 | 9 | 3.5 | 1,795 |
| ch-CZE Juniors Open B | 2009 | 4 | 1.5 | 1,393 |
| Kouty nad Desnou Open B | 2010 | 4 | 2 | 1,613 |
| ch-CZE U16 | 2008 | 4 | 1.5 | 1,723 |
| 7th Zdar nad Sazavou Vysocina Open | 2010 | 3 | 1 | 1,867 |
| ch-CZE U12 | 2004 | 3 | 0.5 | – |
| Havlickuv Brod Open B | 2005 | 2 | 0 | 1,589 |
| Havlickuv Brod Vysocina Open | 2004 | 1 | 0 | 1,718 |
Interactive opening tree from all 31 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jiri Kaser's chess games?
31 games by Jiri Kaser, from Jan 2009 to Jul 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line Jiri Kaser has played.
What does Jiri Kaser play on the first move as White?
Across 17 games with White in our database, Jiri Kaser opens with 1.e4 (100% of games). Against 1.e4 as Black, Jiri Kaser answers 1...e5 (100% of games). Against 1.d4: 1...d5 (100% of games).
What openings does Jiri Kaser play as White?
As White, Jiri Kaser's most-played openings in our database are: Sicilian: Closed (6 games, 0.0% win rate); Italian Game (2 games, 0.0% win rate); Pirc Defense (2 games, 0.0% win rate). The full breakdown of 17 games with White is in the table above.
What openings does Jiri Kaser play as Black?
As Black, Jiri Kaser most often plays: Ruy Lopez: Classical (2 games, 0.0% win rate); Scotch Game (2 games, 50.0% win rate); Italian Game (2 games, 0.0% win rate). See the table above for the top ten Black openings across 14 games.
What is Jiri Kaser's FIDE rating?
Jiri Kaser is currently rated 1,820 in classical chess. Peak classical rating: 1,836 (Mar 2025).
How many games has Jiri Kaser played?
Our database contains 31 games by Jiri Kaser, covering Jan 2009 to Jul 2026. Overall record: 6 wins, 9 draws, 16 losses (19.4% win rate).
How do I prepare against Jiri Kaser?
31 games by Jiri Kaser reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.