Player profile
Hajek, Oskar
Dossier
96 of 117 games analyzed.
Accuracy: 89.6%
Opened e4: 21/45Opened d4: 20/45Opened c4: 2/45Opened b3: 2/45
Castled kingside: 50Same-side castling: 45Castled queenside: 23Opposite-side castling: 15Did not castle: 10
Played in the center: 31Played on the kingside: 19Played on the queenside: 16Fianchettoed queenside: 14Fianchettoed kingside: 9
Active pieces: 67Sacrificed material: 58Initiated exchanges: 53Space advantage: 42Isolated pawn: 37Kept the bishop pair: 35Backward pawn: 32Missed tactics: 24Avoided exchanges: 18Played gambits: 17
Openings
Click "+" to add that group to the games list below. Multiple groups can be added at once.
As White 53 games 33W 10D 9L
Rapport-Jobava System 13 games 7W 4D 2L
(unspecified) 13 games 7W 4D 2L
(unspecified)
13 games
7W
4D
2L
Sicilian Defense 10 games 4W 3D 3L
Nyezhmetdinov-Rossolimo Attack 2 games 1W 0D 1L
(unspecified)
2 games
1W
0D
1L
Chekhover Variation 2 games 1W 0D 1L
(unspecified)
2 games
1W
0D
1L
Closed 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Four Knights Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Czerniak Attack 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Alapin Variation 1 game 1W 0D 0L
Barmen Defense
1 game
1W
0D
0L
Hyperaccelerated Dragon 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
French Variation 1 game 1W 0D 0L
Westerinen Attack
1 game
1W
0D
0L
French Defense 7 games 6W 0D 1L
Tarrasch Variation 4 games 3W 0D 1L
Chistyakov Defense
1 game
0W
0D
1L
Guimard Defense, Main Line
1 game
1W
0D
0L
Morozevich Variation
1 game
1W
0D
0L
Guimard Defense
1 game
1W
0D
0L
Horwitz Attack 1 game 1W 0D 0L
Papa-Ticulat Gambit
1 game
1W
0D
0L
Winawer Variation 1 game 1W 0D 0L
Advance Variation
1 game
1W
0D
0L
Paulsen Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Pirc Defense 4 games 3W 1D 0L
(unspecified) 3 games 2W 1D 0L
(unspecified)
3 games
2W
1D
0L
150 Attack 1 game 1W 0D 0L
Sveshnikov-Jansa Attack
1 game
1W
0D
0L
Indian Defense 3 games 0W 1D 2L
(unspecified) 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Reversed Chigorin Defense 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Accelerated London System 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
? 3 games 1W 0D 1L
(unspecified) 3 games 1W 0D 1L
(unspecified)
3 games
1W
0D
1L
Rapport-Jobava System, with e6 2 games 2W 0D 0L
(unspecified) 2 games 2W 0D 0L
(unspecified)
2 games
2W
0D
0L
English Opening 2 games 2W 0D 0L
Anglo-Scandinavian Defense 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
King's English Variation 1 game 1W 0D 0L
Reversed Sicilian
1 game
1W
0D
0L
Grünfeld Defense 1 game 1W 0D 0L
Exchange Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Caro-Kann Defense 1 game 1W 0D 0L
Advance Variation 1 game 1W 0D 0L
Van der Wiel Attack
1 game
1W
0D
0L
King's Indian Defense 1 game 1W 0D 0L
Karpov System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Modern Defense 1 game 1W 0D 0L
Standard Defense 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Czech Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Four Knights Game 1 game 0W 1D 0L
Scotch Variation Accepted 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Petrov's Defense 1 game 1W 0D 0L
Modern Attack 1 game 1W 0D 0L
Center Attack
1 game
1W
0D
0L
Scandinavian Defense 1 game 1W 0D 0L
Lasker Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Nimzo-Larsen Attack 1 game 1W 0D 0L
Classical Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
As Black 50 games 23W 10D 16L
Ruy Lopez 7 games 2W 2D 3L
Morphy Defense 5 games 0W 2D 3L
Schliemann Defense Deferred
5 games
0W
2D
3L
Exchange Variation 2 games 2W 0D 0L
King's Bishop Variation
2 games
2W
0D
0L
English Opening 5 games 1W 1D 3L
King's English Variation 4 games 1W 1D 2L
Adhiban Gambit
1 game
1W
0D
0L
(unspecified)
1 game
0W
0D
1L
Two Knights Variation
1 game
0W
0D
1L
Two Knights Variation, Fianchetto Line
1 game
0W
1D
0L
Agincourt Defense 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Queen's Gambit Declined 3 games 2W 0D 1L
Albin Countergambit 3 games 2W 0D 1L
(unspecified)
3 games
2W
0D
1L
Queen's Gambit Accepted 3 games 2W 1D 0L
Janowski-Larsen Variation 2 games 2W 0D 0L
(unspecified)
2 games
2W
0D
0L
Old Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Pirc Defense 3 games 1W 0D 2L
(unspecified) 3 games 1W 0D 2L
(unspecified)
3 games
1W
0D
2L
Petrov's Defense 3 games 0W 2D 1L
Nimzowitsch Attack 2 games 0W 1D 1L
(unspecified)
2 games
0W
1D
1L
Modern Attack 1 game 0W 1D 0L
Trifunovic Variation
1 game
0W
1D
0L
French Defense 2 games 1W 0D 1L
Exchange Variation 1 game 0W 0D 1L
Monte Carlo Variation
1 game
0W
0D
1L
Queen's Knight 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Italian Game 2 games 1W 0D 1L
Two Knights Defense 2 games 1W 0D 1L
Modern Bishop's Opening
1 game
1W
0D
0L
Polerio Defense, Bishop Check Line
1 game
0W
0D
1L
Zukertort Opening 2 games 1W 0D 1L
Black Mustang Defense 2 games 1W 0D 1L
(unspecified)
2 games
1W
0D
1L
? 2 games 2W 0D 0L
(unspecified) 2 games 2W 0D 0L
(unspecified)
2 games
2W
0D
0L
Hungarian Opening 2 games 2W 0D 0L
(unspecified) 2 games 2W 0D 0L
(unspecified)
2 games
2W
0D
0L
Queen's Pawn Game 2 games 1W 0D 1L
Symmetrical Variation 1 game 0W 0D 1L
Pseudo-Catalan
1 game
0W
0D
1L
London System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Caro-Kann Defense 1 game 1W 0D 0L
Modern Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Owen Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
St. George Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Philidor Defense 1 game 0W 0D 1L
Lion Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Lion Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Réti Opening 1 game 0W 0D 1L
Reversed Blumenfeld Gambit 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
King's Indian Attack 1 game 0W 0D 0L
Sicilian Variation 1 game 0W 0D 0L
(unspecified)
1 game
0W
0D
0L
Scotch Game 1 game 0W 1D 0L
Mieses Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
King's Gambit Accepted 1 game 0W 1D 0L
Schallopp Defense 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Anderssen's Opening 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Vienna Game 1 game 1W 0D 0L
Vienna Gambit 1 game 1W 0D 0L
Bardeleben Variation
1 game
1W
0D
0L
Alekhine Defense 1 game 0W 1D 0L
Exchange Variation 1 game 0W 1D 0L
Voronezh Variation
1 game
0W
1D
0L
Bishop's Opening 1 game 1W 0D 0L
Vienna Hybrid 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Sicilian Defense 1 game 0W 1D 0L
Moscow Variation 1 game 0W 1D 0L
Main Line
1 game
0W
1D
0L
Blunders Top 4 of 378
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 117 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.10.03 | Round 9: Dvorak, Libor - Hajek, Oskar | 9.5 | 2026.10.03 Dvorak, Libor (316598) (2053) | 1 | 84.90% | 1. e4 c6 2. d4 d5 3. Nd2 g6 | |
| 2026.10.03 | Round 8: Hajek, Oskar - Novotny, Michal | 8.3 | 2026.10.03 Novotny, Michal (310980) (2342) | 0 | 89.20% | 1. e4 e6 2. d4 d5 3. Nd2 c5 | |
| 2026.10.03 | Round 7: Urbanec, Ladislav - Hajek, Oskar | 7.3 | 2026.10.03 Urbanec, Ladislav (304352) (2087) | 1 | 81.50% | 1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 | |
| 2026.10.03 | Round 6: Hajek, Oskar - Brotanek, Tomas | 6.4 | 2026.10.03 Brotanek, Tomas (23741988) (1845) | 1 | 91.50% | 1. d4 e6 2. Nc3 d5 3. Bf4 c6 | |
| 2026.10.03 | Round 4: Hajek, Oskar - Maly, Filip | 4.4 | 2026.10.03 Maly, Filip (329800) (1966) | 1 | 93.90% | 1. d4 Nf6 2. Nc3 g6 3. e4 d6 | |
| 2026.10.03 | Round 3: Hurta, Miroslav - Hajek, Oskar | 3.4 | 2026.10.03 Hurta, Miroslav (320072) (1855) | 1 | 96.90% | 1. e4 b6 2. d4 Bb7 3. Nc3 e6 | |
| 2026.10.03 | Round 2: Hajek, Oskar - Levchenko, Alisa | 2.4 | 2026.10.03 Levchenko, Alisa (23760311) (1741) | 1 | 91.30% | 1. e4 e6 2. b3 d5 3. Bb2 dxe4 | |
| 2026.10.03 | Round 1: Matousek, Jakub - Hajek, Oskar | 1.4 | 2026.10.03 Matousek, Jakub (23766352) (1485) | 1 | 93.50% | 1. e4 a6 2. Nf3 b5 3. Nc3 Bb7 | |
| 2026.10.02 | Round 5: Navara, David - Hajek, Oskar | 5.1 | 2026.10.02 Navara, David (309095) (2588) | 0 | 87.90% | 1. d4 d5 2. c4 e5 3. dxe5 Ne7 | |
| 2026.04.23 | SVK Extraliga 2024/2025 | 1 | 2026.04.23 Bouska, Jiri (23722223) (2329) | 0 | 92.40% | 1. d4 d5 2. Nc3 Nf6 3. Bf4 a6 | |
| 2025.10.04 | Round 9: Hajek, Oskar - Svizensky, Lubos | 9.6 | 2025.10.04 Svizensky, Lubos (349437) (1819) | ½ | 82.60% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 Bf5 | |
| 2025.10.04 | Round 8: Hajek, Oskar - Kubat, Pavel | 8.9 | 2025.10.04 Kubat, Pavel (325678) (1995) | 1 | 89.70% | 1. d4 e6 2. Nc3 Bb4 3. e4 d5 | |
| 2025.10.04 | Round 7: Zwardon, Vojtech - Hajek, Oskar | 7.5 | 2025.10.04 Zwardon, Vojtech (325511) (2423) | 0 | 91.20% | 1. c4 e6 2. e3 d5 3. b3 d4 | |
| 2025.10.04 | Round 6: Hajek, Oskar - Dvoulety, Tomas | 6.8 | 2025.10.04 Dvoulety, Tomas (326011) (1920) | 1 | 97.70% | 1. d4 d5 2. Nc3 Nf6 3. Bf4 c6 | |
| 2025.10.04 | Round 5: Kratochvil, Karel - Hajek, Oskar | 5.3 | 2025.10.04 Kratochvil, Karel (325546) (2162) | 0 | 81.50% | 1. d4 d5 2. c4 e5 3. e3 exd4 | |
| 2025.10.04 | Round 4: Kredl, Karel - Hajek, Oskar | 4.6 | 2025.10.04 Kredl, Karel (315893) (2069) | 1 | 76.30% | 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 | |
| 2025.10.04 | Round 3: Hajek, Oskar - Nekula, Richard | 3.8 | 2025.10.04 Nekula, Richard (312347) (1962) | ½ | 94.40% | 1. d4 Nf6 2. Nc3 d6 3. e4 g6 | |
| 2025.10.04 | Round 2: Prucek, Ladislav - Hajek, Oskar | 2.8 | 2025.10.04 Prucek, Ladislav (330086) (1790) | 1 | 96.50% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2025.10.04 | Round 1: Hajek, Oskar - Richterova, Natasa | 1.8 | 2025.10.04 Richterova, Natasa (384488) (1522) | 1 | 97.60% | 1. c4 d5 2. cxd5 Qxd5 3. Nc3 Qd6 | |
| 2025.07.24 | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | 8.24 | 2025.07.24 Ret, Adam Josef (384240) (2035) | 0 | - | 1. c4 e5 2. g3 c6 3. Nf3 e4 | |
| 2025.07.24 | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | 6.25 | 2025.07.24 Vrana, Frantisek (302066) (2046) | 0 | - | 1. Nf3 Nc6 2. d4 d6 3. d5 Ne5 | |
| 2025.07.24 | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | 4.28 | 2025.07.24 Ligotnis, Maksims (11636785) (1960) | 0 | - | 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 | |
| 2025.07.23 | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | 3.13 | 2025.07.23 Roshka, Yevgeniy (14129558) (2458) | 0 | - | 1. d4 Nf6 2. Nc3 e6 3. Bf4 b6 | |
| 2025.07.23 | CZECH OPEN 2025 - G1 - PARDUBICKÝ KRAJ OPEN - rapid tournament | 2.10 | 2025.07.23 Rasik, Vitezslav (300306) (2398) | ½ | - | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2025.07.13 | Round 7: Hajek, Oskar - Rybacek, Martin | 7.3 | 2025.07.13 Rybacek, Martin (23739266) (1948) | 1 | 96.70% | 1. d4 Nf6 2. c4 g6 3. Nc3 d5 | |
| 2025.07.12 | Round 7: Hajek, Oskar - Jan Pomikálek | 7.6 | 2025.07.12 Jan Pomikálek | 1 | - | 1. Ng3 e5 2. e4 Ng6 3. Nc3 Nc6 | |
| 2025.07.12 | Round 6: Prochazka, Petr - Hajek, Oskar | 6.3 | 2025.07.12 Prochazka, Petr (322229) (1967) | 1 | 92.60% | 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 | |
| 2025.07.12 | Round 5: Sorf, Filip - Hajek, Oskar | 5.7 | 2025.07.12 Sorf, Filip (23749520) (1687) | 1 | - | 1. Nf3 f6 2. e4 e5 3. Ne3 c6 | |
| 2025.07.12 | Round 4: Hajek, Oskar - Winter, Ondrej | 4.5 | 2025.07.12 Winter, Ondrej (23702192) (2263) | * | - | 1. c4 f6 2. b3 c5 3. f3 b6 | |
| 2025.07.12 | Round 3: Babula, Vlastimil - Hajek, Oskar | 3.2 | 2025.07.12 Babula, Vlastimil (301264) (2520) | 1 | 78.30% | 1. c4 c5 2. Nc3 Nb6 3. b3 f6 | |
| 2025.07.12 | Round 2: Hajek, Oskar - Velim, Vojtech | 2.3 | 2025.07.12 Velim, Vojtech (23749407) (2056) | 0 | 80.90% | 1. b3 b6 2. Nf3 Nf6 3. g3 g6 | |
| 2025.07.11 | Round 5: Hajek, Oskar - Policar, Martin | 5.3 | 2025.07.11 Policar, Martin (23734868) (1944) | 1 | 95.00% | 1. e4 c6 2. d4 d5 3. e5 Bf5 | |
| 2025.07.09 | Round 3: Hajek, Oskar - Paczka, Patryk | 3.3 | 2025.07.09 Paczka, Patryk (1143336) (1898) | 1 | 87.60% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2025.07.09 | Round 11: Kolbusovsky, Michal - Hajek, Oskar | 11.5 | 2025.07.09 Kolbusovsky, Michal (23717645) (1932) | 0 | - | 1. e4 d6 2. d4 Nf6 3. Nc3 e5 | |
| 2025.07.09 | Round 10: Hajek, Oskar - Krizek, Krystof | 10.5 | 2025.07.09 Krizek, Krystof (23701307) (1995) | 1 | - | 1. d4 g6 2. Nc3 Bg7 3. e4 d6 | |
| 2025.07.09 | Round 9: Ocelak, Jakub - Hajek, Oskar | 9.4 | 2025.07.09 Ocelak, Jakub (23707933) (2201) | 0 | - | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2025.07.09 | Round 8: Velim, Vojtech - Hajek, Oskar | 8.4 | 2025.07.09 Velim, Vojtech (23749407) (2145) | ½ | - | 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 | |
| 2025.07.09 | Round 7: Hajek, Oskar - Polansky, Jiri | 7.4 | 2025.07.09 Polansky, Jiri (354899) (1859) | 1 | - | 1. d4 d5 2. Nc3 e6 3. Bf4 Bd6 | |
| 2025.07.09 | Round 5: Hajek, Oskar - Hronek, Ondrej | 5.5 | 2025.07.09 Hronek, Ondrej (23703024) (1994) | 1 | - | 1. d4 Nf6 2. Nc3 e6 3. Bf4 d5 | |
| 2025.07.09 | Round 4: Borkovec, Ondrej - Hajek, Oskar | 4.6 | 2025.07.09 Borkovec, Ondrej (23733853) (1860) | 1 | - | 1. d4 d5 2. c4 e5 3. dxe5 Ne7 | |
| 2025.07.09 | Round 3: Jun, Rudolf - Hajek, Oskar | 3.3 | 2025.07.09 Jun, Rudolf (376612) (2186) | 0 | 81.80% | 1. c4 e5 2. Nc3 Nf6 3. e4 Bc5 | |
| 2025.07.09 | Round 1: Hajek, Oskar - Eichler, Bretislav | 1.5 | 2025.07.09 Eichler, Bretislav (359238) (1768) | 1 | 83.50% | 1. d4 e6 2. Nc3 d5 3. e4 c6 | |
| 2025.07.08 | Round 7: Kolbusovsky, Michal - Hajek, Oskar | 7.5 | 2025.07.08 Kolbusovsky, Michal (23717645) (1915) | 1 | 94.00% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2025.07.08 | Round 5: Zemen, Pavel - Hajek, Oskar | 5.4 | 2025.07.08 Zemen, Pavel (387410) (1816) | 1 | 91.90% | 1. g3 e5 2. Bg2 d5 3. Nh3 Nc6 | |
| 2025.07.08 | Round 4: Hajek, Oskar - Svacina, Tobias | 4.5 | 2025.07.08 Svacina, Tobias (385859) (1899) | 1 | 97.80% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 c5 | |
| 2025.07.08 | Round 3: Policar, Martin - Hajek, Oskar | 3.4 | 2025.07.08 Policar, Martin (23734868) (1891) | 0 | - | 1. d4 d5 2. Nf3 Nf6 3. g3 c5 | |
| 2025.07.08 | Round 2: Hajek, Oskar - Svadlenka, Michal | 2.6 | 2025.07.08 Svadlenka, Michal (23717068) (1911) | 1 | 61.30% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 | |
| 2025.07.08 | Round 1: Bambousek, Zdenek - Hajek, Oskar | 1.6 | 2025.07.08 Bambousek, Zdenek (387070) (1692) | 1 | 97.10% | 1. e4 e6 2. Nc3 b6 3. d4 Bb7 | |
| 2025.07.05 | Round 4: Pribyl, Josef - Hajek, Oskar | 4.1 | 2025.07.05 Pribyl, Josef (300187) (2165) | 0 | 90.50% | 1. Nf3 d5 2. c4 d4 3. e3 c5 | |
| 2025.07.05 | Round 6: Babula, Vlastimil - Hajek, Oskar | 6.1 | 2025.07.05 Babula, Vlastimil (391930) (2327) | * | - | 1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 | |
| 2025.07.05 | Round 2: Hajek, Oskar - Babula, Vlastimil | 2.1 | 2025.07.05 Babula, Vlastimil (301264) (2483) | 0 | 85.80% | 1. d4 Nf6 2. Nc3 c5 3. d5 d6 | |
| 2025.07.05 | Round 2: Velim, Vojtech - Hajek, Oskar | 2.1 | 2025.07.05 Velim, Vojtech (23749407) (1920) | ½ | 85.90% | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 | |
| 2025.07.05 | Round 6: Hajek, Oskar - Soucek, Petr | 6.1 | 2025.07.05 Soucek, Petr (23715170) (2201) | 0 | 87.10% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 | |
| 2025.07.05 | Round 1: Hajek, Oskar - Burgermeister, Michal | 1.1 | 2025.07.05 Burgermeister, Michal (323608) (1848) | 1 | 93.40% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 Bf5 | |
| 2025.05.11 | Round 9: Seidl, Jan - Hajek, Oskar | 9.4 | 2025.05.11 Seidl, Jan (23714522) (2288) | ½ | 94.50% | 1. c4 e5 2. Nc3 Nf6 3. g3 g6 | |
| 2025.05.10 | Round 13: Jun, Rudolf - Hajek, Oskar | 13.2 | 2025.05.10 Jun, Rudolf (376612) (2212) | 0 | 88.20% | 1. e4 d6 2. d4 Nf6 3. Bd3 e5 | |
| 2025.05.10 | Round 12: Hajek, Oskar - Triantafilidis, Mihail | 12.3 | 2025.05.10 Triantafilidis, Mihail (4282930) (2060) | 1 | 85.20% | 1. e4 d6 2. d4 Nf6 3. Nc3 c6 | |
| 2025.05.10 | Round 10: Seidl, Jan - Hajek, Oskar | 10.2 | 2025.05.10 Seidl, Jan (23714522) (2043) | 1 | 79.30% | 1. d4 d5 2. c4 e5 3. dxe5 Ne7 | |
| 2025.05.10 | Round 9: Hajek, Oskar - Machacek, Jan | 9.2 | 2025.05.10 Machacek, Jan (23717700) (2128) | 1 | 77.70% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2025.05.10 | Round 8: Zelba, Lukas - Hajek, Oskar | 8.2 | 2025.05.10 Zelba, Lukas (23717874) (2116) | ½ | 90.70% | 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 | |
| 2025.05.10 | Round 7: Hajek, Oskar - Setina, Vaclav | 7.6 | 2025.05.10 Setina, Vaclav (23712180) (1851) | 1 | 92.80% | 1. d4 d5 2. Nc3 e6 3. Bf4 Nf6 | |
| 2025.05.10 | Round 6: Cagasik, Tomas - Hajek, Oskar | 6.3 | 2025.05.10 Cagasik, Tomas (316865) (2198) | ½ | 84.80% | 1. f4 e5 2. e4 exf4 3. Nf3 Nf6 | |
| 2025.05.10 | Round 5: Hajek, Oskar - Vojta, Jakub | 5.2 | 2025.05.10 Vojta, Jakub (382515) (2222) | ½ | - | 1. d4 Nf6 2. Nc3 d5 3. Bf4 a6 | |
| 2025.05.10 | Round 4: Zemen, Pavel - Hajek, Oskar | 4.7 | 2025.05.10 Zemen, Pavel (387410) (1839) | 1 | - | 1. g3 e5 2. Bg2 d5 3. Nh3 Nc6 | |
| 2025.05.10 | Round 3: Hajek, Oskar - Babula, Matej | 3.13 | 2025.05.10 Babula, Matej (398322) (2023) | 0 | 73.90% | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 | |
| 2025.05.10 | Round 2: Janco, Darius - Hajek, Oskar | 2.17 | 2025.05.10 Janco, Darius (14911450) (1927) | 1 | 86.50% | 1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 | |
| 2025.05.10 | Round 1: Hajek, Oskar - Druska, Pavol | 1.17 | 2025.05.10 Druska, Pavol (14977109) (1761) | 1 | 92.90% | 1. c4 e5 2. Nc3 Bc5 3. Nf3 d6 | |
| 2025.05.10 | Round 8: Hajek, Oskar - Soucek, Jan | 8.3 | 2025.05.10 Soucek, Jan (23713275) (2288) | ½ | 97.50% | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 | |
| 2025.05.09 | Round 11: Hajek, Oskar - Delgerdalai, Bayarjavkhlan | 11.1 | 2025.05.09 Delgerdalai, Bayarjavkhlan (23727276) (2162) | 0 | 87.30% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 | |
| 2025.05.09 | Round 7: Hajek, Oskar - Hanl, Frantisek | 7.10 | 2025.05.09 Hanl, Frantisek (357510) (2133) | 1 | 94.30% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 c6 | |
| 2025.05.09 | Round 6: Winter, Ondrej - Hajek, Oskar | 6.2 | 2025.05.09 Winter, Ondrej (23702192) (2293) | 0 | 81.90% | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 | |
| 2025.05.08 | Round 5: Hajek, Oskar - Jun, Rudolf | 5.2 | 2025.05.08 Jun, Rudolf (376612) (2242) | ½ | 88.30% | 1. e4 c5 2. b3 Nc6 3. Bb2 d6 | |
| 2025.05.07 | Round 4: Varga, Csaba Zoltan - Hajek, Oskar | 4.4 | 2025.05.07 Varga, Csaba Zoltan (724335) (2270) | 1 | 96.70% | 1. a3 e5 2. c4 Nf6 3. d3 c5 | |
| 2025.05.07 | Round 3: Hajek, Oskar - Orgon, Dusan | 3.16 | 2025.05.07 Orgon, Dusan (14902443) (2011) | 1 | - | 1. d4 e6 2. e4 d5 3. Nd2 Nc6 | |
| 2025.05.06 | Round 2: Budil, Vaclav - Hajek, Oskar | 2.17 | 2025.05.06 Budil, Vaclav (23776226) (1925) | 1 | 94.50% | 1. e4 e5 2. Nc3 Nf6 3. f4 d5 | |
| 2025.05.06 | Round 1: Hajek, Oskar - Vokoun, Michal | 1.17 | 2025.05.06 Vokoun, Michal (23771330) (1773) | 1 | 82.90% | 1. e4 c5 2. Nf3 g6 3. c3 d5 | |
| 2025.03.16 | Extraliga 2024 | 8.6 | 2025.03.16 Krak, Tomas (14903750) (2228) | ½ | 94.30% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 a6 | |
| 2025.03.15 | Extraliga 2024 | 7.6 | 2025.03.15 Cech, Pavel (302139) (2315) | ½ | 95.70% | 1. d4 d5 2. c4 dxc4 3. e3 e5 | |
| 2025.01.19 | Extraliga 2024/25 | 4.5 | 2025.01.19 Motuz, Karol (14902621) (2305) | ½ | 98.00% | 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 | |
| 2025.01.18 | SVK Extraliga 2024/2025 | 3.5 | 2025.01.18 Skreko, Igor (14959704) (2242) | 0 | 92.40% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2024.08.25 | Round 9: Hajek, Oskar - Soural, Jan | 9.1 | 2024.08.25 Soural, Jan (311928) (2130) | ½ | 98.90% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 Ng8 | |
| 2024.08.24 | Round 8: Slovak, Kilian - Hajek, Oskar | 8.1 | 2024.08.24 Slovak, Kilian (365440) (2250) | ½ | 87.80% | 1. e4 Nf6 2. e5 Nd5 3. d4 d6 | |
| 2024.08.23 | Round 7: Hajek, Oskar - Gnida, Patrik | 7.1 | 2024.08.23 Gnida, Patrik (351660) (2219) | 1 | 93.90% | 1. e4 e5 2. Nf3 Nf6 3. d4 exd4 | |
| 2024.08.22 | Round 6: Banasik, Krzysztof - Hajek, Oskar | 6.2 | 2024.08.22 Banasik, Krzysztof (1125222) (2180) | 1 | 95.00% | 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 | |
| 2024.08.21 | Round 5: Hajek, Oskar - Polak, Tomas | 5.2 | 2024.08.21 Polak, Tomas (300560) (2514) | ½ | 97.70% | 1. e4 c5 2. Nf3 g6 3. d4 cxd4 | |
| 2024.08.20 | Round 4: Hanl, Frantisek - Hajek, Oskar | 4.4 | 2024.08.20 Hanl, Frantisek (357510) (2102) | 1 | 94.30% | 1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 | |
| 2024.08.19 | Round 3: Hajek, Oskar - Munk, Petr | 3.1 | 2024.08.19 Munk, Petr (317799) (2120) | ½ | 89.70% | 1. d4 Nf6 2. Bf4 g6 3. Nc3 c5 | |
| 2024.08.18 | Round 2: Olsar, Robin - Hajek, Oskar | 2.2 | 2024.08.18 Olsar, Robin (322628) (2013) | 1 | 94.00% | 1. Nf3 Nc6 2. e4 e5 3. Bb5 a6 | |
| 2024.08.17 | Round 1: Hajek, Oskar - Slavinsky, Rostislav | 1.2 | 2024.08.17 Slavinsky, Rostislav (306959) (1947) | 1 | 93.60% | 1. e4 d6 2. d4 Nf6 3. Nc3 g6 | |
| 2024.08.16 | Round 9: Hajek, Oskar - Hasala, Richard | 9.4 | 2024.08.16 Hasala, Richard (14969157) (1853) | 1 | 79.20% | 1. e4 c5 2. Nf3 e6 3. b3 d5 | |
| 2024.08.16 | Round 8: Krejca, Jakub - Hajek, Oskar | 8.2 | 2024.08.16 Krejca, Jakub (365777) (2041) | 0 | 91.60% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2024.08.16 | Round 7: Hajek, Oskar - Bednarik, Josef | 7.2 | 2024.08.16 Bednarik, Josef (359017) (2074) | 1 | 90.60% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 | |
| 2024.08.16 | Round 6: Slovak, Kilian - Hajek, Oskar | 6.1 | 2024.08.16 Slovak, Kilian (365440) (2188) | 0 | 87.40% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2024.08.16 | Round 5: Hajek, Oskar - Karnik, Pavel | 5.1 | 2024.08.16 Karnik, Pavel (304093) (2291) | 1 | 89.50% | 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 | |
| 2024.08.16 | Round 4: Hajek, Oskar - Gawlas, Roman | 4.3 | 2024.08.16 Gawlas, Roman (351652) (1978) | 1 | 85.20% | 1. e4 e6 2. d4 d5 3. Nd2 Be7 | |
| 2024.08.16 | Round 3: Beres, Dominik - Hajek, Oskar | 3.3 | 2024.08.16 Beres, Dominik (14905230) (1959) | 1 | 96.50% | 1. e4 d6 2. d4 Nf6 3. Bd3 e5 | |
| 2024.08.16 | Round 2: Hajek, Oskar - Bazantova, Marie | 2.3 | 2024.08.16 Bazantova, Marie (309354) (1860) | 1 | 81.00% | 1. b3 d5 2. Bb2 Nf6 3. e3 g6 | |
| 2024.08.16 | Round 1: Abrahamek, David - Hajek, Oskar | 1.3 | 2024.08.16 Abrahamek, David (23766301) (1560) | 1 | 92.30% | 1. Nf3 Nc6 2. d4 d6 3. c4 e5 | |
| 2024.05.08 | Round 9: Hajek, Oskar - Mudrak, Josef | 2024.05.08 Mudrak, Josef (301116) (2223) | 1 | 90.90% | 1. e4 d6 2. d4 Nf6 3. Nc3 e5 | ||
| 2024.05.08 | Round 8: Delgerdalai, Bayarjavkhlan - Hajek, Oskar | 2024.05.08 Delgerdalai, Bayarjavkhlan (23727276) (2224) | ½ | 95.40% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | ||
| 2024.05.08 | Round 6: Hajek, Oskar - Chkhaidze, Nikoloz | 2024.05.08 Chkhaidze, Nikoloz (13601750) (2177) | 0 | 91.80% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | ||
| 2024.05.08 | Round 5: Starek, Stanislav - Hajek, Oskar | 2024.05.08 Starek, Stanislav (349844) (2183) | ½ | 97.20% | 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 | ||
| 2024.05.08 | Round 4: Hajek, Oskar - Bezdek, Tomas | 2024.05.08 Bezdek, Tomas (23733551) (1980) | 1 | 82.10% | 1. e4 e6 2. d4 d5 3. Nd2 Nc6 | ||
| skalica b | 7.3 | Zwardon, Vojtech (325511) (2435) | ½ | 98.70% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 | ||
| skalica b | 6.5 | Adharsh K (25718207) (2089) | 1 | 86.40% | 1. Nf3 Nc6 2. d4 d6 3. c4 e5 | ||
| skalica b | 5.5 | Sikorova, Olga (307033) (2137) | ½ | 85.30% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 | ||
| skalica b | 4.6 | Strouts, Graham (14964139) (1894) | 1 | 92.60% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| skalica b | 3.3 | Jablonicky, Martin (14925621) (2265) | 0 | 89.70% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 a6 | ||
| skalica b | 2.5 | Neuhoff, Laertes (16279719) (1955) | 0 | 90.80% | 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 | ||
| skalica b | 1.5 | Schwandner, Simon (14997215) (1632) | 1 | 86.80% | 1. d4 Nf6 2. Nc3 d5 3. Bf4 Bd7 | ||
| Round 7: Roubalik, Jakub - Hajek, Oskar | 7.1 | Roubalik, Jakub (322237) (2329) | 0 | - | |||
| Round 6: Hajek, Oskar - Vojtech, Ladislav | 6.3 | Vojtech, Ladislav (23760362) (1996) | 1 | 88.10% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | ||
| Round 5: Molik, Jakub - Hajek, Oskar | 5.5 | Molik, Jakub (23732687) (1717) | 1 | 93.00% | 1. e4 g6 2. d4 Bg7 3. f4 d6 | ||
| Round 4: Hajek, Oskar - Vyskocil, Neklan | 4.3 | Vyskocil, Neklan (307106) (2261) | ½ | 87.20% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 | ||
| Round 3: Janous, Patrik - Hajek, Oskar | 3.2 | Janous, Patrik (23781980) | 0 | 81.90% | 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 | ||
| Round 2: Hajek, Oskar - Luc, Martin | 2.2 | Luc, Martin (390356) (1920) | 1 | 88.80% | 1. Nf3 c5 2. g3 Nc6 3. Bg2 d5 | ||
| Round 1: Macharacek, Jakub - Hajek, Oskar | 1.2 | Macharacek, Jakub (23766697) (1677) | 1 | 93.10% | 1. e4 Nf6 2. e5 Nd5 3. d4 d6 |