Prepare against Michal Ac
Slovakia · World #22,374 classical · FIDE ID 14900319
When preparing against Michal Ac, expect 1.d4 in 85% of White games. Against 1.e4 the reply is 1...c5 (67% of games); against 1.d4, 1...Nf6 (93%). Lowest win rate among frequent openings: Slav Defense as White, 27.8% over 18 games.
Our database contains 390 games by Michal Ac, covering Apr 2003 to Jul 2026. Below you'll find Michal Ac's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Michal Ac 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 | 2,038 | 2,244 | Apr 2003 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 390 | 127 | 135 | 128 | 32.6% |
| As White | 185 | 70 | 65 | 50 | 37.8% |
| As Black | 205 | 57 | 70 | 78 | 27.8% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Michal Ac's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Michal Ac's side.
First moves as White (185 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 158 | 85.4% | 54.7% |
| Nf3 | 23 | 12.4% | 60.9% |
| e4 | 3 | 1.6% | 66.7% |
| d3 | 1 | 0.5% | 0.0% |
Main lines as White
- 1.d4 — 85% of White games, 54.7% score
- …Nf6 (58% of these games) — Ac usually continues c4 (48.3% score)
- …d5 (30% of these games) — Ac usually continues c4 (68.4% score)
- …f5 (3% of these games) — Ac usually continues Nc3 (70.0% score)
- 1.Nf3 — 12% of White games, 60.9% score
- …Nf6 (43% of these games) — Ac usually continues g3 (61.1% score)
- …g6 (17% of these games) — Ac usually continues g3 (25.0% score)
- …d5 (17% of these games) — Ac usually continues d4 (75.0% score)
As Black against 1.e4 (117 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 78 | 66.7% | 48.7% |
| e5 | 35 | 29.9% | 37.1% |
| g6 | 2 | 1.7% | 0.0% |
| Nf6 | 1 | 0.9% | 0.0% |
As Black against 1.d4 (56 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 52 | 92.9% | 42.3% |
| d5 | 2 | 3.6% | 25.0% |
| g6 | 2 | 3.6% | 50.0% |
Michal Ac's chess games
All 390 games by Michal Ac 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: 127 wins, 135 draws, 128 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A56 | Benoni Defense | 22 | 7/7/8 | 31.8% |
| D18 | Slav Defense | 18 | 5/10/3 | 27.8% |
| E92 | King's Indian Defense: Orthodox Variation | 16 | 5/6/5 | 31.3% |
| D55 | Queen's Gambit Declined | 15 | 10/4/1 | 66.7% |
| E76 | King's Indian Defense: Four Pawns Attack | 15 | 5/3/7 | 33.3% |
| E38 | Nimzo-Indian: Classical Variation | 14 | 4/3/7 | 28.6% |
| A07 | Réti Opening | 11 | 3/5/3 | 27.3% |
| A50 | Indian Defense | 9 | 4/4/1 | 44.4% |
| D36 | Semi-Slav Defense | 8 | 4/4/0 | 50.0% |
| D91 | Grünfeld Defense | 8 | 6/1/1 | 75.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B78 | Sicilian: Dragon | 41 | 13/16/12 | 31.7% |
| B53 | Sicilian | 13 | 5/2/6 | 38.5% |
| E94 | King's Indian Defense: Orthodox Variation | 13 | 1/6/6 | 7.7% |
| A24 | English Opening | 12 | 3/6/3 | 25.0% |
| E60 | Indian Defense | 12 | 3/5/4 | 25.0% |
| B22 | Sicilian: Alapin | 10 | 4/2/4 | 40.0% |
| E69 | King's Indian Defense | 10 | 2/3/5 | 20.0% |
| C77 | Ruy Lopez: Steinitz Defense Deferred | 8 | 0/4/4 | 0.0% |
| E81 | King's Indian: Sämisch | 7 | 4/1/2 | 57.1% |
| C87 | Ruy Lopez: Closed | 6 | 1/0/5 | 16.7% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 1997 | Gennadij Timoscenko | 2,515 | chT2-SVK 9697 | E92 |
| Feb 1999 | Marek Matlak | 2,448 | 15th Cappelle Open | E60 |
| Jan 1987 | Jan Banas | 2,390 | ch-SVK | D37 |
| Jan 1996 | Ladislav Dobrovolsky | 2,375 | chT-SVK 9596 | D67 |
| Jan 2005 | Attila Istvan Csonka | 2,362 | chT-SVK 0405 | E48 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Bratislava Slovan Open | 1999 | 73 | 42.5 | 2,322 |
| ch-SVK | 1989 | 55 | 23 | 2,257 |
| chT-SVK | 1995 | 21 | 13.5 | 2,336 |
| chT-SVK 9596 | 1996 | 12 | 6.5 | 2,280 |
| chT1-SVK w 0102 | 2002 | 12 | 6 | 2,275 |
| chT-SVK 0405 | 2005 | 11 | 5.5 | 2,343 |
| chT1W-SVK 0304 | 2004 | 9 | 4 | 2,175 |
| chT2A-SVK 1920 | 2020 | 9 | 4.5 | 2,166 |
Interactive opening tree from all 390 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Michal Ac's chess games?
390 games by Michal Ac, 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 Michal Ac has played.
What does Michal Ac play on the first move as White?
Across 185 games with White in our database, Michal Ac opens with 1.d4 (85% of games), 1.Nf3 (12% of games), 1.e4 (2% of games). Against 1.e4 as Black, Michal Ac answers 1...c5 (67% of games), 1...e5 (30% of games), 1...g6 (2% of games). Against 1.d4: 1...Nf6 (93% of games), 1...d5 (4% of games), 1...g6 (4% of games).
What openings does Michal Ac play as White?
As White, Michal Ac's most-played openings in our database are: Benoni Defense (22 games, 31.8% win rate); Slav Defense (18 games, 27.8% win rate); King's Indian Defense: Orthodox Variation (16 games, 31.3% win rate). The full breakdown of 185 games with White is in the table above.
What openings does Michal Ac play as Black?
As Black, Michal Ac most often plays: Sicilian: Dragon (41 games, 31.7% win rate); Sicilian (13 games, 38.5% win rate); King's Indian Defense: Orthodox Variation (13 games, 7.7% win rate). See the table above for the top ten Black openings across 205 games.
What is Michal Ac's FIDE rating?
Michal Ac is currently rated 2,038 in classical chess. Peak classical rating: 2,244 (Apr 2003).
How many games has Michal Ac played?
Our database contains 390 games by Michal Ac, covering Apr 2003 to Jul 2026. Overall record: 127 wins, 135 draws, 128 losses (32.6% win rate).
How do I prepare against Michal Ac?
390 games by Michal Ac 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.