Carlsen shocked Topalov by employing the Alekhine defense and it worked! Topalov had a bad position right out of the opening and never recovered.
GM Topalov (2780) – GM Carlsen (2733) [B04]
20.02.2008, Morelia 2008
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5 5.Nxe5 c6 6.Bd3 Nd7 7.Nxd7 Bxd7 8.0–0 g6 9.Nd2 Bg7 10.Nf3 0–0 11.Re1 Bg4 12.c3 c5 13.Be4 cxd4 14.cxd4 e6 15.Qb3 Bxf3 16.Bxf3 Bxd4 17.Bxd5 Qxd5 18.Qxd5 exd5 19.Rd1 Bg7 20.Kf1 Rfd8 21.Bg5 Rd7 22.Rd2 h6 23.Be3 d4 24.Rd3 Rc8 25.Bd2 Rc2 26.Rb1 Re7 27.a4 f5 28.b3 Rec7 29.Be1 Kf7 30.Rd2 Rc1 31.Rxc1 Rxc1 32.Ke2 Rb1 33.Rd3 Ke6 34.h4 Kd5 35.Bd2 Ke4 36.Rg3 f4 37.Rd3 Be5 38.f3+ Kd5 39.Be1 Bd6 40.Bd2 g5 41.hxg5 hxg5 42.Be1 g4 43.fxg4 Ke4 Black wins 0–1
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