411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...d6/3. d4/3...Nd7/4. Bc4/4...Ne7
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Philidor Defense: Hanham Variation rd bd qd kd bd rd pd pd pd nd nd pd pd pd pd pd bl pl pl nl pl pl pl pl pl pl rl nl bl ql kl rl
4...Ne7??
This move cramps Black's position even further and allows Ng5, when f7 cannot be comfortably defended. One example: d5 Qh5 (g6 Qf3 (Nf5 Bxd5) f5 Ne6 wins the queen) Ng6 Bxd5, and Black won't live very long due to f7.
Theory table
+567Ng5
d5Qh5
Ng6Bxd5 +-g6
Qf3f5
Ne6 +-Nf5
Bxd5 +-
Philidor Defense