As White

Colle System · Basic

An easy system to learn: you always develop the same way (e3, Bd3, Nbd2, castling) and then open the centre with e4.

Train this opening

Lines

1. Opponent's mistake · 7...Bb4

   1.d4 d5 2.Nf3 Nf6 3.e3 Nc6 4.Bd3 Bg4 5.Nbd2 e5 6.dxe5 Nxe5 7.Be2 Bb4 8.Nxe5

2. Opponent's mistake · 7...Ne4

   1.d4 d5 2.Nf3 Nf6 3.e3 Nc6 4.Bd3 Bg4 5.Nbd2 e5 6.dxe5 Nxe5 7.Be2 Ne4 8.Nxe5

3. 5.Bxf3 Nc6

   1.d4 d5 2.Nf3 Nf6 3.e3 Bg4 4.Be2 Bxf3 5.Bxf3 Nc6 6.c4 dxc4 7.Nd2

4. 5.Nbd2 e5

   1.d4 d5 2.Nf3 Nf6 3.e3 Nc6 4.Bd3 Bg4 5.Nbd2 e5 6.dxe5 Nxe5 7.Be2 Nxf3+ 8.Bxf3 Bxf3 9.Nxf3

5. 5.Bxf3 e6

   1.d4 d5 2.Nf3 Nf6 3.e3 Bg4 4.Be2 Bxf3 5.Bxf3 e6 6.O-O Bd6 7.g3

6. 5.Nbd2 Bxf3

   1.d4 d5 2.Nf3 Nf6 3.e3 Nc6 4.Bd3 Bg4 5.Nbd2 Bxf3 6.Nxf3 e6 7.O-O Bd6 8.c4

7. 4.Be2 e6

   1.d4 d5 2.Nf3 Nf6 3.e3 Bg4 4.Be2 e6 5.O-O Bd6 6.Nbd2 O-O 7.h3

8. Colle System · 4.Bd3 Nc6

   1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 Nc6 5.O-O Bd6 6.b3 O-O 7.c4

9. 5.Nbd2 e6

   1.d4 d5 2.Nf3 Nf6 3.e3 Nc6 4.Bd3 Bg4 5.Nbd2 e6 6.c3 Bd6 7.e4

10. Colle System · 4.Bd3 Bd6

    1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 Bd6 5.O-O O-O 6.Nbd2 Nc6 7.c4