[Event "New York"] [Site "?"] [Round "0"] [White "Paulsen"] [Black "Morphy"] [Result "0-1"] [ECO "C48"] [Opening "Four Knights: Spanish Variation"] 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 {4...Bb4 5.O-O O-O 6.d3 d6 7. Bg5 Bxc3 8.bxc3 Qe7 9.Re1 Nd8 when White's advantage of the two bishops is off set by his doubled c-pawn 4...Nd4 is an interesting move that breaks the symmetry.} 5. O-O O-O 6. Nxe5 Re8 7. Nxc6 {7.Nf3 Nxe4 8.d4 Nxc3 9.bxc3 Bf8} 7... dxc6 8. Bc4 b5 {8...Nxe4 9.Nxe4 Rxe4 10.Bxf7+ Kxf7 11.Qf3+ Kg8 12. Qxe4 would leave White an exchange ahead.} 9. Be2 Nxe4 10. Nxe4 Rxe4 11. Bf3 {A mistake as the light squared bishop has moved four times at the expense of ignoring White's other pieces. 11.d3 Re6 12.c3 is a better plan.} 11... Re6 12. c3 {The final mi stake which lets Black lock in White's queenside pieces. Correct was 12.d3 with a playable game.} 12... Qd3 13. b4 Bb6 14. a4 bxa4 { 14...a6 15.axb5 Qxb5 16.d4 would let White out of the bind.} 15. Qxa4 Bd7 16. Ra2 Rae8 {Black's lead in development coupled with White's weakened back rank gives Morphy a winning position.} 17. Qa6 { 17.Bb2 would allow Black a forced mate in two.} 17... Qxf3 { An amazing queen sacrifice which breaks down White's kingside defenses.} 18. gxf3 Rg6+ 19. Kh1 Bh3 20. Rd1 {20.Rg1 would allow Black a forced mate in three. } 20... Bg2+ 21. Kg1 Bxf3+ 22. Kf1 Bg2+ 23. Kg1 Bh3+ 24. Kh1 Bxf2 { The threat of 25...Bg2 mate decides the game.} 25. Qf1 Bxf1 26. Rxf1 Re2 27. Ra1 Rh6 28. d4 Be3 {White resigned since he has no defense against 29...Rhxh2+} 0-1