Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. d4/4...exd4/5. O-O/5...Nxe4/6. Nc3/6...dxc3/7. Bxf7/7...Kxf7/8. Qd5/8...Kf6/9. Qxe4

Nakhmanson Gambit rd bd qd bd rd pd pd pd pd pd pd nd kd ql pd nl pl pl pl pl pl pl rl bl rl kl Nakhmanson Gambit, Kf6 Defence, Queen Capture 9. Qxe4 White now has the very simple threat of Bg5+ winning the Black queen. Let's look at some obvious defences that don't work: 9...h6?? 10.Nh4! sees the White queen invade on g6 in combination with a rook on e1, for example 10...g5 11.Qg6+ Ke5 (Ke7 12.Nf5#) 12.Re1+ Kd5 13.Qe4+ Kc5 14.Be3+ Kb5 15.a4+ 1-0 10...d6 11.Qg6+ Ke7 12.Re1+ Ne5 13.Bf4 Kd7 14.Bxe5 Qxh4 (or 14...dxe5 15.Rxe5 with threats of Qf7+, Qe6+ and Qg4+) 15.Bf6! 1-0 10...Ne7 (to control g6 and stop that from happening) 11.Qf4+ Ke6 12.Re1+ Kd5 13.Re5+ with mate in 2 9...d5?? 10.Bg5+ Kf7 11.Qf4+ 1-0 9...Ne7?? would be the correct move against 9.Re1, but here it fails quickly to 10.Qf4+ when 10...Nf5 11.Qg5+ wins the queen anyway, and 10...Kg6 or 10...Ke6 allow the f3-knight in with check. The correct move is to indirectly control g5 with 9...Be7! which also vacates the f8 square on which the Black king can shelter from e-file checks. Black's Plan A is to make an immediate dash for f8, but this isn't always possible.