Gelfand, B. (2755) - Ivanchuk, V. (2703) [E11]
Biel (10) 2009
1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 O-O
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5. a3
The Bogo-Indian Defence.
5...Be7 6. e4 d5 7. Bd3 c5
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8. dxc5 dxe4 9. Nxe4 Nxe4 10. Bxe4 Qxd1+ 11. Kxd1
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11...a5!?
A novelty. Black tries to fight for the initiative. Another continuation is 11...Bxc5.
12. Bf4 Bxc5 13. Ke2 f5 14. Bc2 Nc6 15. Rhd1
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15...a4! 16. Kf1 b6 17. Kg1 h6 18. Bd6 Rf7 19. Rd2 Bxd6 20. Rxd6 Rc7=
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21. Rad1 Kf8
With equality.
22. Nd4
Or 22. h3.
22...Nxd4 23. R1xd4 b5! 24. g4
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24...bxc4
After 24...Ke7!? 25. gxf5 exf5 26. R6d5 Rxc4 27. Rxc4 bxc4 28. Bxf5 Bxf5 29. Rxf5 Kd6 Black has a slight advantage in the ending thanks to the good king.
25. gxf5 Ke7 26. fxe6 Rb8 27. Bxa4 Bxe6 28. Ra6 Bf5 29. Rc6
29. Ra5 is possible.
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29...Rxc6 30. Bxc6 Rxb2 31. Rxc4 Rb1+ 32. Kg2
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32...Rb3
If 33. a4 then 33...Bh3+ 34. Kg1 Rb1+ 35. Rc1 Rxc1 mate.
Draw. 1/2-1/2
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