Prepare against Josef Koblasa
Czechia · World #48,196 classical · FIDE ID 386421
Our database contains 54 games by Josef Koblasa, covering Jun 2014 to Jul 2026. Below you'll find Josef Koblasa's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Josef Koblasa 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 | 1,900 | 1,949 | Jun 2020 |
| Rapid | 1,814 | 1,886 | Sep 2024 |
| Blitz | 1,903 | 1,903 | Jul 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 54 | 12 | 21 | 21 | 22.2% |
| As White | 32 | 7 | 11 | 14 | 21.9% |
| As Black | 22 | 5 | 10 | 7 | 22.7% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Josef Koblasa's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Josef Koblasa's side.
First moves as White (32 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c4 | 31 | 96.9% | 40.3% |
| e4 | 1 | 3.1% | 0.0% |
Main lines as White
- 1.c4 — 97% of White games, 40.3% score
- …e6 (23% of these games) — Koblasa usually continues Nc3 (35.7% score)
- …Nf6 (23% of these games) — Koblasa usually continues Nc3 (50.0% score)
- …e5 (23% of these games) — Koblasa usually continues Nc3 (42.9% score)
- 1.e4 — 3% of White games, 0.0% score
- …d6 (100% of these games) — Koblasa usually continues d4 (0.0% score)
As Black against 1.e4 (9 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d6 | 9 | 100.0% | 44.4% |
As Black against 1.d4 (9 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 5 | 55.6% | 30.0% |
| g6 | 4 | 44.4% | 87.5% |
Josef Koblasa's chess games
All 54 games by Josef Koblasa in the Chess.ceo database (Jun 2014 - 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: 12 wins, 21 draws, 21 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E72 | English Opening | 11 | 2/5/4 | 18.2% |
| A25 | English Opening: Reverse Sicilian | 9 | 2/3/4 | 22.2% |
| A36 | English Opening: Symmetrical | 3 | 1/1/1 | 33.3% |
| E72 | Modern Defense | 3 | 0/1/2 | 0.0% |
| D10 | Slav Defense | 2 | 1/0/1 | 50.0% |
| A86 | English Opening: Dutch Defense | 1 | 0/0/1 | 0.0% |
| E91 | King's Indian Defense: Orthodox Variation | 1 | 1/0/0 | 100.0% |
| B06 | Pirc Defense | 1 | 0/0/1 | 0.0% |
| D13 | English Opening: Slav Setup | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B07 | Pirc Defense | 9 | 1/6/2 | 11.1% |
| A48 | Indian Defense | 3 | 1/1/1 | 33.3% |
| A36 | English Opening: Symmetrical | 3 | 0/1/2 | 0.0% |
| E76 | King's Indian Defense: Four Pawns Attack | 2 | 2/0/0 | 100.0% |
| E65 | Modern Defense | 1 | 0/1/0 | 0.0% |
| A48 | Torre Attack | 1 | 1/0/0 | 100.0% |
| E60 | King's Indian Defense | 1 | 0/0/1 | 0.0% |
| E91 | King's Indian Defense: Orthodox Variation | 1 | 0/0/1 | 0.0% |
| E87 | King's Indian: Sämisch | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Apr 2018 | Otto Hurtak | 1,960 | chT2A-CZE 1718 | A36 |
| Mar 2020 | Ian Aird | 1,848 | WchT Seniors 50 | D31 |
| Nov 2017 | Dalibor Sala | 1,846 | chT2A-CZE 1718 | A29 |
| Mar 2018 | Jiri Korsa | 1,826 | chT2A-CZE 1718 | A25 |
| Dec 2018 | Jakub Stastny | 1,824 | chT-CZE 2B 1819 | E76 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| 26th Wch Seniors 50 | 2016 | 11 | 5 | 1,946 |
| 10th Teplice Open | 2015 | 9 | 4 | 1,769 |
| chT2A-CZE 1718 | 2018 | 7 | 4.5 | 2,059 |
| chT-CZE 2B 1819 | 2019 | 6 | 3 | 1,975 |
| WchT Seniors 50 | 2020 | 6 | 3.5 | 2,020 |
| ch-EUR Seniors 50 | 2021 | 5 | 1 | 1,890 |
| chT2B-CZE 2122 | 2022 | 4 | 1 | 1,735 |
| chT2B-CZE 1920 | 2020 | 4 | 0.5 | 1,644 |
Interactive opening tree from all 54 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Josef Koblasa's chess games?
54 games by Josef Koblasa, from Jun 2014 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 Josef Koblasa has played.
What does Josef Koblasa play on the first move as White?
Across 32 games with White in our database, Josef Koblasa opens with 1.c4 (97% of games), 1.e4 (3% of games). Against 1.e4 as Black, Josef Koblasa answers 1...d6 (100% of games). Against 1.d4: 1...Nf6 (56% of games), 1...g6 (44% of games).
What openings does Josef Koblasa play as White?
As White, Josef Koblasa's most-played openings in our database are: English Opening (11 games, 18.2% win rate); English Opening: Reverse Sicilian (9 games, 22.2% win rate); English Opening: Symmetrical (3 games, 33.3% win rate). The full breakdown of 32 games with White is in the table above.
What openings does Josef Koblasa play as Black?
As Black, Josef Koblasa most often plays: Pirc Defense (9 games, 11.1% win rate); Indian Defense (3 games, 33.3% win rate); English Opening: Symmetrical (3 games, 0.0% win rate). See the table above for the top ten Black openings across 22 games.
What is Josef Koblasa's FIDE rating?
Josef Koblasa is currently rated 1,900 in classical chess, 1,814 in rapid and 1,903 in blitz. Peak classical rating: 1,949 (Jun 2020).
How many games has Josef Koblasa played?
Our database contains 54 games by Josef Koblasa, covering Jun 2014 to Jul 2026. Overall record: 12 wins, 21 draws, 21 losses (22.2% win rate).
How do I prepare against Josef Koblasa?
54 games by Josef Koblasa 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.