Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. Ng5/4...d5/5. exd5/5...Na5/6. Bb5/6...c6/7. dxc6/7...bxc6/8. Qf3/8...Rb8/9. Bd3

Two Knights:Colman Defence
a b c d e f g h 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 a b c d e f g h
Position in Forsyth-Edwards Notation (FEN) 1rbqkb1r/p4ppp/2p2n2/n3p1N1/8/3B1Q2/PPPP1PPP/RNB1K2R b
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5 c6 7. dxc6 bxc6 8. Qf3 Rb8 9. Bd3

Two Knights:Colman Defence

9. Bd3

This Bishop retreat while unnatural due to it blocking in the d-pawn gives added protection of the e4 square which the White Knight may soon occupy makes this a tough move for Black to face.

Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation..

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5
6.Bb5+ c6 7. dxc6 bxc6 8. Qf3 Rb8 9.Bd3

	9	10	11	12	13
1	Bd3 Be7	O-O O-O	Re1 Rb4	Nc3 Rf4	∞
2	... h6	Ne4 Nd5	b3 g6	Qg3	+=
3	... Bd6	Nc3 O-O	+=
4	... Rb4	Nc3 Be7	+=

Statistics

Estimated next move likelihood
h6 50%, Bd6 30%, Be7 20%