Prepare against Ondrej Mach
Czechia · World #38,861 classical · FIDE ID 372358
Our database contains 52 games by Ondrej Mach, covering Apr 2013 to Jul 2026. Below you'll find Ondrej Mach's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Ondrej Mach 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 | 1,940 | 1,966 | Feb 2025 |
| Rapid | 1,895 | 1,895 | Jul 2026 |
| Blitz | 1,914 | 1,918 | Dec 2022 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 52 | 19 | 8 | 25 | 36.5% |
| As White | 26 | 11 | 5 | 10 | 42.3% |
| As Black | 26 | 8 | 3 | 15 | 30.8% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Ondrej Mach's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Ondrej Mach's side.
First moves as White (26 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 26 | 100.0% | 51.9% |
Main lines as White
- 1.d4 — 100% of White games, 51.9% score
- …Nf6 (69% of these games) — Mach usually continues c4 (52.8% score)
- …d5 (27% of these games) — Mach usually continues c4 (42.9% score)
- …d6 (4% of these games) — Mach usually continues e4 (100.0% score)
As Black against 1.e4 (17 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 11 | 64.7% | 59.1% |
| c6 | 5 | 29.4% | 50.0% |
| c5 | 1 | 5.9% | 0.0% |
As Black against 1.d4 (3 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 2 | 66.7% | 0.0% |
| c5 | 1 | 33.3% | 0.0% |
Ondrej Mach's chess games
All 52 games by Ondrej Mach in the Chess.ceo database (Apr 2013 - 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: 19 wins, 8 draws, 25 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A58 | Benoni Defense | 5 | 2/1/2 | 40.0% |
| A52 | Budapest Defense | 3 | 1/2/0 | 33.3% |
| D10 | Slav Defense | 3 | 1/0/2 | 33.3% |
| E12 | Queen's Indian Defense | 3 | 0/1/2 | 0.0% |
| D06 | Queen's Gambit | 2 | 1/0/1 | 50.0% |
| D35 | Indian Defense | 2 | 1/1/0 | 50.0% |
| E71 | King's Indian Defense | 2 | 1/0/1 | 50.0% |
| E70 | King's Indian Defense: Four Pawns Attack | 1 | 1/0/0 | 100.0% |
| D32 | Queen's Gambit Declined | 1 | 0/0/1 | 0.0% |
| D38 | Queen's Gambit Declined: Ragozin Defense | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C77 | Ruy Lopez: Morphy Defense | 3 | 2/0/1 | 66.7% |
| C38 | King's Gambit | 2 | 2/0/0 | 100.0% |
| B10 | Caro-Kann | 2 | 1/1/0 | 50.0% |
| A13 | English Opening | 2 | 0/0/2 | 0.0% |
| A47 | Indian Defense | 2 | 0/0/2 | 0.0% |
| C55 | Italian Game | 2 | 1/0/1 | 50.0% |
| B07 | Dunst Opening | 1 | 0/0/1 | 0.0% |
| D93 | English Opening: Symmetrical | 1 | 0/1/0 | 0.0% |
| A40 | Hungarian Opening | 1 | 0/0/1 | 0.0% |
| C68 | Ruy Lopez: Exchange | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jun 2022 | Oleg Ustinov | 2,249 | Prague Menchik Mem Rapid | E20 |
| Jul 2022 | Pavel Kopta | 2,234 | 28th Klatovy Open | A70 |
| Jul 2021 | Pavel Flajsman | 2,184 | Ceske Budejovice Open | E71 |
| Apr 2021 | Patrik Tesar | 2,139 | ch-CZE Betsys Online Blitz | D16 |
| Apr 2021 | Milan Bohacek | 2,051 | ch-CZE Betsys Online Blitz | C38 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-CZE Betsys Online Blitz | 2021 | 13 | 7 | 1,905 |
| Ceske Budejovice Open | 2021 | 9 | 5 | 2,088 |
| Hradec Kralove Open | 2013 | 7 | 1.5 | 1,667 |
| chT2A-CZE 2122 | 2022 | 7 | 3 | 1,893 |
| Prague Summer Open B 3rd | 2016 | 6 | 2 | 1,780 |
| chT1W-CZE 2324 | 2024 | 4 | 2.5 | 2,066 |
| 28th Klatovy Open | 2022 | 3 | 1 | 2,032 |
| 20th Prague Open A | 2022 | 2 | 0 | 1,881 |
Interactive opening tree from all 52 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Ondrej Mach's chess games?
52 games by Ondrej Mach, from Apr 2013 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 Ondrej Mach has played.
What does Ondrej Mach play on the first move as White?
Across 26 games with White in our database, Ondrej Mach opens with 1.d4 (100% of games). Against 1.e4 as Black, Ondrej Mach answers 1...e5 (65% of games), 1...c6 (29% of games), 1...c5 (6% of games). Against 1.d4: 1...Nf6 (67% of games), 1...c5 (33% of games).
What openings does Ondrej Mach play as White?
As White, Ondrej Mach's most-played openings in our database are: Benoni Defense (5 games, 40.0% win rate); Budapest Defense (3 games, 33.3% win rate); Slav Defense (3 games, 33.3% win rate). The full breakdown of 26 games with White is in the table above.
What openings does Ondrej Mach play as Black?
As Black, Ondrej Mach most often plays: Ruy Lopez: Morphy Defense (3 games, 66.7% win rate); King's Gambit (2 games, 100.0% win rate); Caro-Kann (2 games, 50.0% win rate). See the table above for the top ten Black openings across 26 games.
What is Ondrej Mach's FIDE rating?
Ondrej Mach is currently rated 1,940 in classical chess, 1,895 in rapid and 1,914 in blitz. Peak classical rating: 1,966 (Feb 2025).
How many games has Ondrej Mach played?
Our database contains 52 games by Ondrej Mach, covering Apr 2013 to Jul 2026. Overall record: 19 wins, 8 draws, 25 losses (36.5% win rate).
How do I prepare against Ondrej Mach?
52 games by Ondrej Mach 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.