(1) Alekhine,A - Verlinsky,B [C44]
Odessa, 1918



1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Nxc3
White has sacrificed a pawn for quick development and command over the center.

4...Nc6 5.Bc4 d6 6.Nf3 Nf6 7.Qb3 Qd7 8.Ng5 Ne5 9.Bb5 c6 10.f4 cxb5
[10...Neg4 11.h3 cxb5 12.hxg4 b4~~ ]

11.fxe5 dxe5
[11...Ng4 12.e6! fxe6 13.Nxb5 a6 14.Nd4 e5 15.Nde6 ]

12.Be3 Bd6 13.Nxb5 0-0 14.Rd1 Ne8 15.0-0
[15.Nxd6 Nxd6 16.0-0 h6 17.Rxf7 Nxf7 18.Rxd7 Bxd7 19.Nxf7 Rxf7 20.Qxb7 Rd8 21.h3 Bxh3 22.Qa6 Bd7 23.Qa5 Rb8 24.b4 Bc6 25.a3 Re8 26.b5 Bxe4 27.Bxa7 Re6 28.Be3 Rg6 29.Qd2 Rf3 30.b6 0-1 Milla de Marco,C-Mitkov,N/Burgas 1998/EXT 2002 (30)]

15...Qe7
[15...h6 16.Nxf7 Rxf7 17.Nxd6 Nxd6 18.Rxd6 Qxd6 19.Qxf7+ Kh7 20.Qd5 Qg6 21.Rf3 a5 22.Qxe5 Be6 23.Bd4 Rg8 24.a3 a4 25.Rg3 Qf7 26.h4 Bc4 27.h5 Be2 28.Qf5+ Qxf5 29.exf5 Bxh5 30.f6 gxf6 31.Rxg8 1/2-1/2 Lehtivaara,R-Ojanen,K/Helsinki 1990/EXT 2000 (31)]

16.Nxd6 Nxd6 17.Qa3
[17.Rxd6 Qxd6 18.Rxf7 Be6 19.Rxf8+ Qxf8 20.Qxe6+ Kh8 21.Nf7+ Kg8 22.Nxe5+ Kh8 23.Nf7+ Kg8 24.Nd6+ Kh8 25.Bd4 1-0 Casa,A-Belkadi,R/Lugano 1968/MCD (25); 17.Qd5 Rd8 18.h3 Be6 19.Nxe6 fxe6 20.Qxe5 Nc4 21.Qg5 Qxg5 22.Bxg5 Rxd1 23.Rxd1 Nxb2 24.Rb1 Na4 1/2-1/2 Kerr,S-Janetschek,K/Siegen 1970/EXT 2002 (24)]

17...Rd8 18.Nxf7
[18.Rxf7 ]

18...Bg4 19.Rxd6 Re8 20.Bg5 Qc7 21.Qb3
[21.Nh6+ Kh8 (21...gxh6 22.Qb3+ Kh8 23.Bf6++- ) ]

21...Be2 22.Nxe5+ Kh8 23.Rc1 Rf8
Diagram Both of white's rooks are under attack and undefended. Rxc7 meets Rf1# Rcd1 meets Qxd6, and Nc4 Bxc6. Rdd1 meets Qxe5. So how to win?

24.Qd1!!
[24.Ng6+ hxg6 25.Qh3+ Kg8 26.Qe6+ Kh8 27.h3 also wins, but it's not as convincing]

24...Qa5
[24...Bxd1 25.Rxc7 ]

25.Qxe2
[25.Qd5! ]

25...Qxe5 26.Rd5 1-0