[Event "Russia"]
[Site "Memphis, TN"]
[Date "1973.??.??"]
[Round "?"]
[White "Osnos, V."]
[Black "Palatnik, S."]
[Result "0-1"]
[ECO "A58"]
[Annotator "Fritz 9 (30s)"]
[PlyCount "74"]
[EventDate "1973.??.??"]
{A58: Benko/Volga Gambit: Lines with 5 bxa6} 1. d4 Nf6 2. c4 c5 3. d5 b5 4.
cxb5 a6 5. bxa6 Bxa6 6. Nc3 d6 7. Nf3 g6 8. g3 Bg7 9. Bh3 O-O 10. O-O Nbd7 11.
Qc2 {last book move} Nb6 {Black threatens to win material: Nb6xd5} 12. Rd1 Qc7
13. e4 Rfb8 14. Rb1 Nfd7 (14... h6 15. Bg2 $14) 15. b3 $16 {Secures a4+c4} Ne5
16. Nxe5 Bxe5 17. Bb2 Nd7 18. Na4 Bxb2 19. Rxb2 (19. Nxb2 Bc8 20. Nc4 Nb6 21.
Nxb6 Qxb6 22. Bxc8 Rxc8 $16) 19... Ne5 $14 20. Rbb1 Qa5 21. Kg2 {White king
safety dropped} Qb4 22. Nc3 Bc8 23. Bxc8 Rxc8 24. Qd2 Rab8 25. h3 c4 26. f4 Nd7
27. Kf3 (27. Re1 $5 $16) 27... Qa3 $14 28. b4 Rxb4 29. Rxb4 Qxb4 30. Rb1 Qa3
31. Qb2 {White threatens to win material: Qb2xa3} Ra8 32. Qb4 $4 {forfeits the
advantage} (32. Qxa3 $142 {would hold out} Rxa3 33. Rc1 $11) 32... Qxb4 $19 33.
Rxb4 Ra3 34. Rxc4 Nb6 35. Rc7 Na4 36. Rxe7 Nxc3 ({Instead of} 36... Rxc3+ 37.
Kg2 Rd3 38. Rc7 $19) 37. Rd7 (37. Rb7 f5 38. exf5 gxf5 $19) 37... Nxd5+ (37...
Nxd5+ 38. Kg2 Rxa2+ 39. Kf1 Nf6 40. Rxd6 Nxe4 $19) 0-1