thysupremefriend vs flysfish

How it swung

The one slip

9...♕xf7 cost 1.4 pawns. ♖xf7 would have held it.

That walks into 10.♕xf7+: the king on g8 and the rook on f8 are both attacked at once.

The point: 10.♕a4 ♗b6 11.d4 exd4

The score

1. 1. e4 e5
2. 2. Nc3 Nf6
3. 3. f3 Nc6
4. 4. Nd5 Bb4
5. 5. Nxf6+ Qxf6
6. 6. c3 Bc5
7. 7. Qb3 O-O
8. 8. Bc4 Na5
9. 9. Bxf7+ Qxf7
10. 10. Qxf7+ Rxf7
11. 11. d4 exd4
12. 12. cxd4 Bxd4
13. 13. Ne2 Nc6
14. 14. Nxd4 Nxd4
15. 15. O-O Ne2+
16. 16. Kf2 Nf4
17. 17. Bxf4 Rxf4
18. 18. g3 Rf6
19. 19. f4 d5
20. 20. Rfe1 d4
21. 21. e5 Rb6
22. 22. e6 Bxe6
23. 23. Rad1 Rxb2+
24. 24. Kf3 Bd5+
25. 25. Kg4 h6
26. 26. Rxd4 Rd8
27. 27. Re7 c5
28. 28. Rd3 c4
29. 29. Ra3 Kf8
30. 30. Re5 b5
31. 31. Rxa7 c3
32. 32. Ree7 c2
33. 33. Re2 c1=Q
34. 34. Rxb2 Qxb2
35. 35. h4 Qg2
36. 36. Kh5 Bf7+
37. 37. Kg4 Be6+
38. 38. f5 Rd4+
39. 39. Kh5 Qf3+
40. 40. Kg6 Qxf5#