Prepare against Jan Sosna
IM · Czechia · World #4,637 classical · FIDE ID 304379
Our database contains 562 games by Jan Sosna, covering Apr 2003 to Jul 2026. Below you'll find Jan Sosna's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jan Sosna 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 | 2,283 | 2,441 | Jan 2004 |
| Rapid | 2,317 | 2,418 | Jan 2017 |
| Blitz | 2,425 | 2,425 | Jul 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 562 | 218 | 212 | 132 | 38.8% |
| As White | 265 | 99 | 102 | 64 | 37.4% |
| As Black | 297 | 119 | 110 | 68 | 40.1% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jan Sosna's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jan Sosna's side.
First moves as White (265 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 250 | 94.3% | 56.4% |
| e4 | 13 | 4.9% | 57.7% |
| Nf3 | 2 | 0.8% | 75.0% |
Main lines as White
- 1.d4 — 94% of White games, 56.4% score
- …Nf6 (65% of these games) — Sosna usually continues Nf3 (54.0% score)
- …d5 (25% of these games) — Sosna usually continues Nf3 (63.4% score)
- …e6 (4% of these games) — Sosna usually continues e4 (50.0% score)
- 1.e4 — 5% of White games, 57.7% score
- …e5 (31% of these games) — Sosna usually continues Nf3 (50.0% score)
- …c5 (23% of these games) — Sosna usually continues Nf3 (66.7% score)
- …e6 (15% of these games) — Sosna usually continues d4 (75.0% score)
As Black against 1.e4 (141 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 141 | 100.0% | 59.6% |
As Black against 1.d4 (114 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 113 | 99.1% | 59.3% |
| Nf6 | 1 | 0.9% | 50.0% |
Jan Sosna's chess games
All 562 games by Jan Sosna 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: 218 wins, 212 draws, 132 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A48 | Torre Attack | 73 | 32/26/15 | 43.8% |
| D03 | Indian Defense | 68 | 21/25/22 | 30.9% |
| D02 | London System | 50 | 16/23/11 | 32.0% |
| D02 | Queen's Pawn Game | 30 | 12/11/7 | 40.0% |
| C03 | French: Tarrasch Variation | 8 | 3/3/2 | 37.5% |
| A43 | Benoni Defense | 7 | 3/2/2 | 42.9% |
| A81 | Dutch Defense | 7 | 2/4/1 | 28.6% |
| B08 | Modern Defense | 7 | 2/5/0 | 28.6% |
| B51 | Sicilian: Moscow Variation | 3 | 2/0/1 | 66.7% |
| D12 | Slav Defense | 2 | 2/0/0 | 100.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C67 | Ruy Lopez: Berlin Defense | 73 | 27/29/17 | 37.0% |
| D31 | Semi-Slav Defense | 49 | 24/15/10 | 49.0% |
| D46 | Slav Defense | 43 | 17/17/9 | 39.5% |
| D02 | Queen's Pawn Game | 19 | 8/8/3 | 42.1% |
| C45 | Scotch Game | 14 | 6/3/5 | 42.9% |
| C54 | Italian Game: Classical Variation | 12 | 3/6/3 | 25.0% |
| E01 | Queen's Gambit Declined | 11 | 3/4/4 | 27.3% |
| C27 | Vienna Game | 10 | 6/1/3 | 60.0% |
| A13 | English Opening | 8 | 1/4/3 | 12.5% |
| A13 | English Opening: Neo-Catalan | 7 | 1/3/3 | 14.3% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Nov 2019 | Jan Markos | 2,571 | chT2E-CZE 1920 | A07 |
| Jun 2010 | Igor Stohl | 2,514 | Hustopece Open | A06 |
| Aug 2009 | Vladimir Talla | 2,483 | Stare Mesto Open | C67 |
| Nov 2005 | Radek Kalod | 2,481 | chT-CZE 0506 | C45 |
| Jan 2014 | Milos Jirovsky | 2,480 | chT-CZE 1314 | D11 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Stare Mesto Open | 2009 | 67 | 48 | 2,372 |
| chT1E-CZE 2324 | 2024 | 11 | 5 | 2,239 |
| chT1E-CZE 0910 | 2010 | 11 | 3.5 | 2,221 |
| chT-CZE 0809 | 2009 | 11 | 6.5 | 2,460 |
| chT-CZE 0405 | 2005 | 11 | 7.5 | 2,510 |
| chT1E-CZE 1617 | 2017 | 11 | 5 | 2,276 |
| Brno DS IM | 2006 | 11 | 8.5 | 2,484 |
| chT1E-CZE 1920 | 2020 | 11 | 7.5 | 2,362 |
Interactive opening tree from all 562 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jan Sosna's chess games?
562 games by Jan Sosna, 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 Jan Sosna has played.
What does Jan Sosna play on the first move as White?
Across 265 games with White in our database, Jan Sosna opens with 1.d4 (94% of games), 1.e4 (5% of games), 1.Nf3 (1% of games). Against 1.e4 as Black, Jan Sosna answers 1...e5 (100% of games). Against 1.d4: 1...d5 (99% of games), 1...Nf6 (1% of games).
What openings does Jan Sosna play as White?
As White, Jan Sosna's most-played openings in our database are: Torre Attack (73 games, 43.8% win rate); Indian Defense (68 games, 30.9% win rate); London System (50 games, 32.0% win rate). The full breakdown of 265 games with White is in the table above.
What openings does Jan Sosna play as Black?
As Black, Jan Sosna most often plays: Ruy Lopez: Berlin Defense (73 games, 37.0% win rate); Semi-Slav Defense (49 games, 49.0% win rate); Slav Defense (43 games, 39.5% win rate). See the table above for the top ten Black openings across 297 games.
What is Jan Sosna's FIDE rating?
Jan Sosna is currently rated 2,283 in classical chess, 2,317 in rapid and 2,425 in blitz. Peak classical rating: 2,441 (Jan 2004).
How many games has Jan Sosna played?
Our database contains 562 games by Jan Sosna, covering Apr 2003 to Jul 2026. Overall record: 218 wins, 212 draws, 132 losses (38.8% win rate).
How do I prepare against Jan Sosna?
562 games by Jan Sosna 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.