The shortest decisive World Championship game

Viswanathan Anand defeated Boris Gelfand in 17 moves in Game 8 of the 2012 World Championship, immediately answering his loss in Game 7 and setting the record for the shortest decisive game in World Championship history.

Lesson

White to move. Main line: 1. d4 Nf6 2. c4 g6 3. f3 c5 4. d5 d6 5. e4 Bg7 6. Ne2 O-O 7. Nec3 Nh5 8. Bg5 Bf6 9. Bxf6 exf6 10. Qd2 f5 11. exf5 Bxf5 12. g4 Re8+ 13. Kd1 Bxb1 14. Rxb1 Qf6 15. gxh5 Qxf3+ 16. Kc2 Qxh1 17. Qf2

Gelfand’s 14...Qf6 attacks c3 and appears to prepare a raid on White’s kingside. Anand accepts the challenge with 15.gxh5, allowing 15...Qxf3+ and 16...Qxh1. Black wins the rook, but the queen’s route home is the real issue.

After 17.Qf2, the black queen on h1 has no clean escape. The resource 17...Nc6 can reopen a route only by sacrificing the knight after 18.dxc6; Black avoids losing the queen outright but remains in a lost position.

Gelfand resigned rather than play out the material loss. The game is a useful antidote to counting captured points during a combination: Black takes a pawn and a rook, but the queen that performs the raid cannot get back.