Modern Defence
MICOS Opening Group E04.MO – Modern Defence begins with 1.d4 g6. Black adopts a hypermodern approach, allowing White to establish a presence in the centre while preparing to challenge it later. The early …g6 prepares a kingside fianchetto with …Bg7, giving Black long-range pressure along the diagonal while maintaining flexibility in the central pawn structure.
The Modern Defence can lead to strategically complex positions where Black relies on piece activity, well-timed pawn breaks and pressure against White’s centre. Depending on the exact move order, positions associated with the King’s Indian Defence can also be reached, while other continuations retain their own distinctive character. Use the searchable table below to find openings by opening name, chess notation or MICOS code and train individual openings interactively with MICOS CAP.
Search by Opening Name, Chess Notation or MICOS Code. MICOS classifies each opening by its exact move order.
| Opening Name | Chess Notation | MICOS Code | MICOS CAP |
|---|---|---|---|
| Modern Defence | 1.d4 g6 | E04.001.MO | |
| Kotov Defence: Robatsch Defence | 1.d4 g6 2.c4 Bg7 | E04.002.MO | Explore ▶ |
| Averbakh Pseudo: Samisch Attack | 1.d4 g6 2.c4 Bg7 3.e4 d6 4.Be3 Nf6 5.f3 | E04.003.MO | Explore ▶ |
| Pterodactyl Defence: Central Bogolubovia Defence | 1.d4 g6 2.c4 Bg7 3.e4 d6 4.Nc3 c5 5.Nge2 Qa5 | E04.004.MO | Explore ▶ |
| Rossolimo Defence | 1.d4 g6 2.c4 Bg7 3.e4 d6 4.Nf3 Bg4 | E04.005.MO | Explore ▶ |
| Modern Defence: 3…e5 | 1.d4 g6 2.c4 Bg7 3.e4 e5 | E04.006.MO | Explore ▶ |
| Beefeater Defence | 1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.d5 Bxc3+ 5.bxc3 f5 | E04.007.MO | Explore ▶ |
| Pterodactyl Defence: Fianchetto - Pteranodon Defence | 1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.d5 Bxc3+ 5.bxc3 Qa5 | E04.008.MO | Explore ▶ |
| Pterodactyl Defence: Central Benoni - Beefeater | 1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.d5 d6 5.e4 Bxc3+ 6.bxc3 Qa5 | E04.009.MO | Explore ▶ |
| Pterodactyl Defence: Fianchetto - Benoni Defence: 4...Qa5 | 1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.d5 Qa5 | E04.010.MO | Explore ▶ |
| Pterodactyl Defence: Miscellany - Quiet Queen Attack | 1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.e3 | E04.011.MO | Explore ▶ |
| Modern Defence: 3…d6 | 1.d4 g6 2.c4 Bg7 3.Nc3 d6 | E04.012.MO | Explore ▶ |
| Averbakh System: Randspringer | 1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 f5 | E04.013.MO | Explore ▶ |
| Averbakh System: Kotov Defence | 1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 Nc6 | E04.014.MO | Explore ▶ |
| Averbakh System | 1.d4 g6 2.c4 d6 3.Nc3 Bg7 4.e4 | E04.015.MO | Explore ▶ |
| Pterodactyl Defence | 1.d4 g6 2.c4 d6 3.Nc3 Bg7 4.e4 c5 5.Nf3 Qa5 | E04.016.MO | Explore ▶ |
| Lizard Defence: Pirc Defence - Diemer Gambit | 1.d4 g6 2.h4 Nf6 3.h5 | E04.017.MO | Explore ▶ |
| London System: Pterodactyl Defence | 1.d4 g6 2.Nf3 Bg7 3.Bf4 c5 4.c3 cxd4 5.cxd4 Qa5+ | E04.018.MO | Explore ▶ |
| Colle System: Siroccopteryx Defence | 1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.Bd3 cxd4 5.Nxd4 Qa5+ | E04.019.MO | Explore ▶ |
| Colle System: Pterodactyl Defence | 1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.Bd3 Qa5+ | E04.020.MO | Explore ▶ |
| Colle System: Rhamphorhynchus Defence | 1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.dxc5 Qa5+ | E04.021.MO | Explore ▶ |
| Pterodactyl Defence: Fianchetto - Queen's Check Defence | 1.d4 g6 2.Nf3 Bg7 3.g3 c5 4.Bg2 Qa5+ | E04.022.MO | Explore ▶ |
| Chigorin Fianchetto Defence | 1.d4 g6 2.Nf3 Bg7 3.Nc3 d5 | E04.023.MO | Explore ▶ |
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