| ECO | Opening / Variation |
|---|---|
| A00 | Sokolsky (Polish) 1.b4 |
| 1... Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d6 5.Nf3 O-O 6.d4 Nbg7 7.Be2 e5 King's Indian Variation | |
| A04 | Reti: Zukertort Opening: Herrstrom Gambit 1.Nf3 g5 |
| A40 | Queen's Pawn Englund Gambit: 1.d4 e5 2.dxe5 Nc6 3.Nf3 Qe7 4.Bf4 Qb4+ |
| 5.Nc3 Qxf4 6.Nd5 Qe4 7.Nxc7+ Kd8 8.Nxa8 Qb4+ 9.c3 or | |
| 5.Bd2 Qxb2 6.Nc3 Bb4 7.Rb1 Qa3 8.Rb3 (trap 6.Bc3? Bb4! 7.Qd2 Bxc3 8.Qxc3 Qc1#) | |
| A45 | Queen's Pawn Trompowsky Attack: 1.d4 Nf6 2.Bg5 Ne4 3.Bf4 c5 |
| Poisoned Pawn Variation: | |
| 1.d4 Nf6 2.Bg5 c5 3.d5 Qb6 4.Nc3 Qxb2 5.Bd2 Qb6 (otherwise threating 6.Rb1 Qa3 7.Nb5) |
|
| A80 | Dutch Defense: Janzen-Korchnoi Gambit 1.d4 f5 2.h3 Nf6 3.g4 d5 4.Nf3 |
| B21 | Sicilian Defense: McDonnell Attack. Tal Gambit 1.e4 c5 2.f4 d5 3.exd5 Nf6 |
| B21 | Sicilian Defense: Smith-Morra Gambit 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 |
| B23 | Sicilian Defense: Grand Prix Attack |
| 1.e4 c5 2.Nc3 d6 3.f4 Nc6 4.Nf3 g6 5.Bc4 Bg7 6.O-O e6 7.f5 exf5 8.d3 Nge7 9.Qe1 h6 | |
| B53 | Sicilian Defense with 4.Qxd4 1.e4 c5 2.Nf3 d6 3.d4 cxd4 |
| C12 | French Defense: McCutcheon Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 |
| 6.Bc1 Ne4 7.Qg4 g6 | |
| C13 | French: Alekhine-Chatard Attack, Albin-Chatard Gambit |
| C23 | Bishop's Opening: Calabrese Countergambit 1.e4 e5 2.Bc4 f5 |
| D00 | Blackmar-Diemer 1.d4 d5 2.e4 dxe4 3.Nc3 |
| D06 | Baltic, Keres, Grau Defense (1.d4 d5 2.c4 Bf5) |
| 3.Nc3 e6 4.Qb3 Nc6 5.Nf3 Nf6 6.Bg5 Na5 7.Qa4+ c6 | |
| D80 | Grünfeld Defense 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Bh4 Nxc3 6.bxc3 dxc4 |