Chess Opening Theory/1. e4/1...e5/2. Nf3/2...d6/3. d4/3...Nd7/4. Bc4/4...Be7/5. dxe5/5...dxe5/6. Qd5

< Chess Opening Theory‎ | 1. e4‎ | 1...e5‎ | 2. Nf3‎ | 2...d6‎ | 3. d4‎ | 3...Nd7‎ | 4. Bc4‎ | 4...Be7‎ | 5. dxe5‎ | 5...dxe5
Philidor Defence
a b c d e f g h
8 a8 b8 c8 d8 e8 f8 g8 h8 8
7 a7 b7 c7 d7 e7 f7 g7 h7 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 b2 c2 d2 e2 f2 g2 h2 2
1 a1 b1 c1 d1 e1 f1 g1 h1 1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)
Moves: 1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 Be7 5. dxe5 dxe5 6. Qd5

6.Qd5 edit

This move threatens immediate mate and wins on the spot. The only way to prevent mate is Nh6, but after Bxh6, Black has to play O-O or Rf8 to stop mate and remain a piece down. If Bb4+, then after c3, the only way to stop the mate is Qe7 of Qf6 but they allow cxb4, winning a piece. So after Qd5, black must lose at least a piece.