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Notes by Boris Schipkov

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 c5
A surprise! A rare and risky move.

   
6. d5
Alternatives for White at this stage are: 6. e4 and 6. e3.
In the game Boleslavsky, I - Smyslov, V, Budapest 1950 White played 6. e4!? cxd4 7. Qxd4 Qxd4 8. Nxd4 e6 9. Ndb5 Na6 10. Bxc4 Bc5 11. Bf4 Ke7 (11... O-O!? 12. O-O Bd7 13. e5 Ne8 14. Rfd1 Bc6 15. Nd4 Nb4) 12. O-O Bd7 13. e5! Nh5 14. Be3 Rhc8 15. Be2 g6 16. Ne4! Bxe3 17. fxe3 Rc2 18. Nbd6 Rf8 19. Bxa6 bxa6 20. g4 Ng7 21. Nf6 Bc6 22. Rfc1 Black resigned, 1-0.
Also interesting is 6. e3 e6 7. Bxc4 Nc6 8. O-O Be7 9. Qe2 O-O 10. dxc5 Bxc5 11. Rd1 Qc7 12. Nb5 Qb8 13. Bd2 a6 14. Nbd4 Bd7 15. Bc3 Nxd4 16. exd4 Bd6 17. d5 Nxd5 18. Bxd5 exd5 19. Rxd5 Bc6 20. Rg5! f6 21. Qe6+ Kh8 22. Rd1! fxg5 23. Qh6 Be5 24. Nxe5! Rf6 (24... gxh6 25. Nf7+ Kg8 26. Nxh6 mate) 25. Qxg5 Qc7 26. h4 Raf8 27. Rd2 Be8 28. h5 h6 29. Qg3 Qe7 30. Re2 Re6 31. Qg4 Rff6 32. Re3 Kg8 33. a5 Bd7? (better is 33... Kh8) 34. Nxd7 Rxe3 35. Nxf6+ Kf7 36. Qg6+ Kf8 37. Nh7+ Kg8 38. fxe3 Qxe3+ 39. Kh1 Qc1+ 40. Kh2 Qf4+ 41. Kh3 Qe3+ 42. g3 Qe7 43. Nf6+ Kf8 44. Bb4 Black resigned in Tolush, A - Alatortsev, V, Moscow URS ch 1944, 1-0.
6...Bf5 7. e3 e6 8. Bxc4 exd5 9. Nxd5 Nc6!?
A novelty. After 9... Be4 10. Nc3 Qxd1+ 11. Kxd1 Bxf3+ 12. gxf3 Nc6 13. Ke2 Be7 14. a5 O-O 15. a6 bxa6 16. Rxa6 Nb4 17. Ra5 Nd7 18. Rd1 Nb6 19. Nd5 N4xd5 20. Bxd5 Nxd5 21. Rxd5 a6 22. Rd7 Rfe8 23. Bd2 Bf8 24. Bc3 White had a comfortable position in this ending, Rustemov A - Ilinsky V, Ch Moscow (open) 1995.
10. Qb3 Qd7 11. Nxf6+ gxf6 12. Bd2 Rg8 13. Bc3
The right answer to Black's plan is 13. O-O-O!? O-O-O 14. Bc3 Qe7 15. Bxf7 Rxg2 16. Nh4 Rg7 17. Nxf5 Qxf7 18. Qxf7 Rxf7 with a small advantage to White.
13...O-O-O 14. Bxf7?!
Deserving attention is 14. Bxf6 Be7 15. Bxe7 Qxe7 with compensation.
14...Rxg2! 15. Nh4!
If 15. Bxf6?, then 15...Nb4! 16. Bxd8 Nd3+ 17. Kf1 Rxf2+ 18. Kg1 Bh3.
15...Ne5!

   
16. Nxf5?
Stronger is 16. Bc4! Rg4 (16... Nxc4 17. Nxg2) 17. Nxf5 Nxc4 18. Ng3! Bh6 19. Rd1 (19. Qc2? Bxe3 20. fxe3 Nxe3 21. Qe2 Re8 22. Qb5 Nc2+ 23. Kf2 Rf4+ 24. Kg2 Qd5+ 25. Kg1 Rg8) 19...Qxd1+ 20. Qxd1 Rxd1+ 21. Kxd1 Nd6 22. a5 Rg6 with equality.
16...Nd3+ 17. Kf1 Rxf2+ 18. Kg1 Kb8 19. Qe6?
Better was 19. Ng3.
19...Rxf5 20. h4 Bd6 21. Rf1 Rg8+!
White resigned. 0-1

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© 2000 Boris Schipkov
© 2000 Borrus International Ltd.