411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. Ng5/4...Nxe4/5. Bxf7/5...Ke7
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Two Knights Defence rd bd qd bd rd pd pd pd pd kd bl pd pd nd pd nl nd pl pl pl pl pl pl pl rl nl bl ql kl rl 1. e4 e5 2. Nf3 Nc6 3. Nc4 Nf6 4. Ng5 Nxe4 5. Bxf7+ C57-C59 Italian Game
Two Knights Defence
5... Ke7
In this position, White must make one more critical move to retain their advantage. If Black manages to trade knights with 6...Nxg5, Black will be able to stabilize their position.
The move 6. d4! prevents this as 6...Nxg5 7. Bxg5 skewers the king and queen. Black capturing the d-pawn is now the least of their worries as White can begin to mount a powerful offensive.
Theory table
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Nxe4 5. Bxf7+ Ke7
6
7
8
h6
Nxe4
Kxf7d5
Nd4
c3
+=
References
Two Knights Defence