(1) Larsen,B - Ivkov,B [A38]
Palma de Mallorca Palma de Mallorca (13), 1967



1.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 g6 5.Bg2 Bg7 6.0-0 0-0 7.a3 a6 8.Rb1 Rb8 9.b4 cxb4 10.axb4 b5 11.cxb5 axb5 12.d4 d5 13.Bf4 Rb6
[13...Bf5 14.Ra1 Ra8 15.Rxa8 Qxa8 16.Qb3+/= ]

14.Qb3 e6 15.Rfc1 Bb7 16.e3 h6 17.Be5 Kh7 18.Bf1 Nxe5 19.Nxe5 Ne4 20.Qd1 Nd6 21.Nd3 h5 22.Nc5 h4 23.Bd3 hxg3 24.hxg3 Rh8 25.Ra1 Bc6 26.Qg4 Qe7 27.Ne2 Nc4 28.Nf4 e5
Diagram Black might be fine if weren't for this wonderful move.

29.Bxg6+ Kg8
[29...fxg6 30.Nxg6 Qf7 (30...Qf6 31.Nxh8 Kxh8 32.Ra7 exd4 33.Ne6+/- ) 31.Nxh8 Bxh8 32.Qh4+ (32.Ne6+- ) 32...Kg7 33.dxe5 Nxe5 (33...Rb8 34.Qg5+ Kh7 35.e6+- ) 34.Qd8 Nc4 35.Rxc4 dxc4 36.Qxb6 ]

30.dxe5 Nxe5 31.Qc8+ Bf8
[31...Qf8 32.Qxf8+ (32.Qc7 ) 32...Bxf8 33.Bh5+- ]

32.Bh5 d4 33.e4 Qg5 34.Nce6!!
[34.Bxf7+ Nxf7 35.Nce6 Qh6 36.Qxf8+ Qxf8 37.Nxf8 Bxe4+/= ]

34...fxe6 35.Qxe6+ Kh7 36.Ra7+ Bg7
[36...Rb7 37.Rxb7+ Bxb7 38.Rc7+ Bg7 39.Rxb7+- ]

37.Rc5
crashing through black's defenses

37...Be8 38.Rxe5 Qxf4 39.Rxg7+ Kxg7 40.Qe7+ Qf7 41.Rg5+
[41.Rg5+ Rg6 42.Rxg6+ Kh7 43.Rh6+ Kxh6 44.Bxf7+- ] 1-0