Prepare against Janusz Koscielski
FM · DEU · World #5,398 classical · FIDE ID 4614437
Our database contains 761 games by Janusz Koscielski, covering Apr 2003 to Jul 2026. Below you'll find Janusz Koscielski's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Janusz Koscielski 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 | 2,263 | 2,390 | Sep 2015 |
| Rapid | 2,255 | 2,339 | Dec 2017 |
| Blitz | 2,099 | 2,332 | Apr 2016 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 761 | 325 | 205 | 231 | 42.7% |
| As White | 382 | 169 | 114 | 99 | 44.2% |
| As Black | 379 | 156 | 91 | 132 | 41.2% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Janusz Koscielski's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Janusz Koscielski's side.
First moves as White (382 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 353 | 92.4% | 59.9% |
| g3 | 24 | 6.3% | 52.1% |
| d4 | 4 | 1.0% | 37.5% |
| Nf3 | 1 | 0.3% | 50.0% |
Main lines as White
- 1.e4 — 92% of White games, 59.9% score
- …c5 (40% of these games) — Koscielski usually continues Nf3 (53.9% score)
- …e5 (18% of these games) — Koscielski usually continues Nf3 (57.3% score)
- …e6 (15% of these games) — Koscielski usually continues d4 (69.8% score)
- 1.g3 — 6% of White games, 52.1% score
- …g6 (38% of these games) — Koscielski usually continues Bg2 (50.0% score)
- …Nf6 (21% of these games) — Koscielski usually continues Bg2 (50.0% score)
- …d5 (17% of these games) — Koscielski usually continues Bg2 (25.0% score)
As Black against 1.e4 (154 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 125 | 81.2% | 58.8% |
| c6 | 21 | 13.6% | 40.5% |
| d5 | 5 | 3.2% | 40.0% |
| g6 | 1 | 0.6% | 50.0% |
| e6 | 1 | 0.6% | 100.0% |
As Black against 1.d4 (139 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 113 | 81.3% | 49.1% |
| f5 | 18 | 12.9% | 44.4% |
| d5 | 5 | 3.6% | 50.0% |
| g6 | 2 | 1.4% | 100.0% |
| d6 | 1 | 0.7% | 100.0% |
Janusz Koscielski's chess games
All 761 games by Janusz Koscielski in the Chess.ceo database (Apr 2003 - 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: 325 wins, 205 draws, 231 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B42 | Sicilian | 57 | 19/17/21 | 33.3% |
| C06 | French: Tarrasch Variation | 50 | 29/13/8 | 58.0% |
| C48 | Four Knights Game: Spanish Variation | 40 | 13/19/8 | 32.5% |
| A00 | Hungarian Opening | 23 | 8/9/6 | 34.8% |
| B90 | Sicilian: Najdorf | 18 | 9/3/6 | 50.0% |
| B19 | Caro-Kann: Classical | 17 | 7/3/7 | 41.2% |
| B07 | Pirc Defense | 14 | 9/2/3 | 64.3% |
| B06 | Modern Defense | 12 | 10/1/1 | 83.3% |
| B05 | Alekhine Defense | 12 | 7/3/2 | 58.3% |
| B36 | Sicilian: Accelerated Dragon | 11 | 6/3/2 | 54.5% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B90 | Sicilian: Najdorf | 53 | 27/13/13 | 50.9% |
| E97 | King's Indian Defense: Orthodox Variation | 38 | 18/6/14 | 47.4% |
| E62 | King's Indian Defense | 24 | 8/2/14 | 33.3% |
| A81 | Dutch Defense | 21 | 5/9/7 | 23.8% |
| E62 | Indian Defense | 19 | 9/4/6 | 47.4% |
| A36 | Modern Defense | 19 | 9/4/6 | 47.4% |
| B50 | Sicilian | 18 | 9/4/5 | 50.0% |
| B23 | Sicilian: Closed | 18 | 10/2/6 | 55.6% |
| B22 | Sicilian: Alapin | 17 | 6/8/3 | 35.3% |
| A49 | Réti Opening: Symmetrical Defense | 16 | 7/2/7 | 43.8% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jun 2000 | Vladimir Epishin | 2,667 | Herford Open | B61 |
| Oct 2000 | Igor Khenkin | 2,633 | 4th chI-Bayern Bank Hofmann | B07 |
| Aug 2001 | Klaus Bischoff | 2,541 | 12th Recklinghausen Open | E99 |
| Sep 2003 | Arkadij Rotstein | 2,533 | Herne Benefiz 3rd | B33 |
| Apr 2000 | Zigurds Lanka | 2,503 | Bad Wildbad Open | B66 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Dortmund Open A | 2005 | 60 | 32.5 | 2,296 |
| Titled Tuesday | 2023 | 54 | 20.5 | 2,171 |
| Recklinghausen Open | 1999 | 24 | 14.5 | 2,374 |
| Sportland NRW-Cup | 2000 | 14 | 7 | 2,317 |
| Kleve Open | 2000 | 14 | 11 | 2,430 |
| ch-GER Net blitz qual5 | 2020 | 13 | 6.5 | 2,209 |
| Dortmund Sparkassen Open | 1998 | 11 | 6.5 | 2,434 |
| Herne Laufer Open | 2004 | 11 | 7.5 | 2,392 |
Interactive opening tree from all 761 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Janusz Koscielski's chess games?
761 games by Janusz Koscielski, from Apr 2003 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 Janusz Koscielski has played.
What does Janusz Koscielski play on the first move as White?
Across 382 games with White in our database, Janusz Koscielski opens with 1.e4 (92% of games), 1.g3 (6% of games), 1.d4 (1% of games). Against 1.e4 as Black, Janusz Koscielski answers 1...c5 (81% of games), 1...c6 (14% of games), 1...d5 (3% of games). Against 1.d4: 1...Nf6 (81% of games), 1...f5 (13% of games), 1...d5 (4% of games).
What openings does Janusz Koscielski play as White?
As White, Janusz Koscielski's most-played openings in our database are: Sicilian (57 games, 33.3% win rate); French: Tarrasch Variation (50 games, 58.0% win rate); Four Knights Game: Spanish Variation (40 games, 32.5% win rate). The full breakdown of 382 games with White is in the table above.
What openings does Janusz Koscielski play as Black?
As Black, Janusz Koscielski most often plays: Sicilian: Najdorf (53 games, 50.9% win rate); King's Indian Defense: Orthodox Variation (38 games, 47.4% win rate); King's Indian Defense (24 games, 33.3% win rate). See the table above for the top ten Black openings across 379 games.
What is Janusz Koscielski's FIDE rating?
Janusz Koscielski is currently rated 2,263 in classical chess, 2,255 in rapid and 2,099 in blitz. Peak classical rating: 2,390 (Sep 2015).
How many games has Janusz Koscielski played?
Our database contains 761 games by Janusz Koscielski, covering Apr 2003 to Jul 2026. Overall record: 325 wins, 205 draws, 231 losses (42.7% win rate).
How do I prepare against Janusz Koscielski?
761 games by Janusz Koscielski 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.