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Ushenina, Anna (2500) - Hou, Yifan (2609) [E32]
Women's World Championship, Taizhou (3) 2013

Notes by Boris Schipkov

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4








   
4. Qc2
The Nimzo-Indian Defence.
O-O 5. e4 d5 6. e5 Ne4 7. Bd3 c5 8. Nf3 cxd4 9. Nxd4 Nd7 10. Bf4 Ndc5 11. O-O Bxc3 12. bxc3








   
12...Bd7!
A good move. White had a small advantage in the endgame after 12...Nxd3 13. Qxd3 b6 14. cxd5 Qxd5 15. Rfd1 Nc5 16. Qg3 Qe4 17. Nb3 Bb7 18. f3 Qf5 19. Bh6 Qg6 20. Qxg6 hxg6 21. Nxc5 bxc5 22. Be3 Rfc8, Ushenina, A - Kosintseva, N, Ohrid 2009.
13. Be2 Na4 14. cxd5 exd5 15. c4 Rc8 16. Qb3








   
16...dxc4!
A novelty. After 16...Nac3 17. cxd5 Ba4 18. Qxb7 Rc7 19. Qa6 Qxd5 White has the slightly better chances, Gundavaa, B - Alekseev, E, Kazan 2013.
17. Bxc4?
A mistake. Black could not have found the best continuation. Here we see the power of home preparation, the power of a strong novelty: Black wins thanks to her knowledge of the opening. Correct is 17. Qxb7 Nac5 18. Qb4 Nd3 19. Bxd3 cxd3 20. Rfd1 a5 21. Qb2 Nc5 22. Be3 Ba4 23. Rd2 Qd5 24. Qa3 Qxe5 25. Rc1 Qh5 26. h3 Rfe8 27. Rc4, with equality.
17...Nac3!
Black obtains a clear advantage: Black's knights are beasts.
18. a4?!
More precise is 18. Bxf7+ Rxf7 19. e6 Bxe6 20. Nxe6 Qf6 21. Rae1 a5 22. f3 a4 23. Qb6 Nd5 24. Qd4 Qxd4+ 25. Nxd4 Nec3 26. Be5 Nxa2.








   
18...Bxa4!
A small combination. Black attacks the queen and the knight and wins the exchange, because White cannot defend all pieces.
19. Rxa4 Nxa4 20. Nf5 Nac3 21. e6








   
21...Rxc4!
Again the strongest move! Black wins.
22. Qxc4 b5 23. Qb3 Qd3!
Threatening ...Ne2+.
24. exf7+ Rxf7
White resigned. 0-1










Move
   

Ushenina, Anna (2500) - Hou, Yifan (2609) [E32]
Women's World Championship/Taizhou (3) 2013

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 d5 6. e5 Ne4 7. Bd3 c5 8. Nf3 cxd4 9. Nxd4 Nd7 10. Bf4 Ndc5 11. O-O Bxc3 12. bxc3 Bd7 13. Be2 Na4 14. cxd5 exd5 15. c4 Rc8 16. Qb3 dxc4 17. Bxc4 Nac3 18. a4 Bxa4 19. Rxa4 Nxa4 20. Nf5 Nac3 21. e6 Rxc4 22. Qxc4 b5 23. Qb3 Qd3 24. exf7+ Rxf7 0-1


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© 2013 Boris Schipkov