Chess Opening Theory/1. e4/1...e5/2. Nf3/2...d6/3. d4

=Philidor Defence= Black has now to deal with the dxe5 threat, but they have to be very careful as there are many traps here!


 * /3...Bg4/ is not a good idea. After 4. dxe5 Bxf3 5. Qxf3 (5. gxf3 dxe5 6. Qxd8+ Kxd8 is also good) dxe5 6. Bc4, White has a strong initiative.
 * /3...exd4/ is strange as Black gives up the center they tried to strengthen, but remains playable. In fact, it is likely the best line (leading to an equal position more easily). It is the most popular according to chessgames.com, with 1,328 games compared to 485 games with 3...Nf6.
 * /3...Nc6/ leaves Black in a little trouble after 4. Bb5.
 * /3...Nd7/, the Hanham Variation, is a path filled with traps after 4. Bc4, but may be playable if Black is careful enough.
 * /3...f5/, the Philidor counter-Gambit which is quite risky but may lead to victory, but usually leads to a clear advantage for white.
 * /3...Nf6/, the improved Hanham Variation. This is rather risky because of 4. dxe5!, where 4...dxe5 would lead to 5. Qxd8+, where Black loses castling rights.

Another option would be:
 * /3...f6/ However, this weakens the kingside and transposes to the Damiano defense (where white does not sacrifice his knight in the Damiano Defense, but instead plays d4. This is not a good idea.)

Theory table
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'''1. e4 e5 2. Nf3 d6 3. d4'''