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
Philidor Defence | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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.