Adijo

Roberto Cosulich – Bruno Parma
10th International Festival; Imperia, September 1968
Sicilian Defence B87

Comments in quotation marks by Grandmaster Enrico Paoli, L’Italia Scacchistica, No. 10, October 1968, p. 243, and International Master Stefano Tatai, Tatai insegna la Najdorf, Caissa Italia editore, Roma, 2008, pp. 162-163.

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Qe2 b5 8. Bb3 Bb7 9. Bg5 Nbd7 10. 0-0-0. 10. Bxe6!? — “A sacrifice for risk-takers, or, as Steinitz, a staunch advocate of defence, might say, for aspiring suicides”. (Tatai).
10. ... h6. Also good is 10. ... Rc8! 11. Rhe1 h6 12. Bh4 g5 13. Bg3 Rxc3 14. bxc3 Qa5 15. f3 d5 16. exd5 Ba3+ 17. Kd2 Nxd5 18. Bxd5 Bxd5 with excellent compensation for the Exchange, Rossetto – Panno, “YMCA Chess Club” Tournament, Buenos Aires 1968.
11. Bh4 Rc8. 11. ... Qa5 12. Rhe1 g5 13. Bg3 Rc8? 14. e5! Rxc3 15. exf6 Rxb3 16. Nxe6! fxe6 17. Qxe6+ Kd8 18. Bxd6 Bxd6 19. Rxd6 Bc8 20. Red1 1–0 Mariotti – Eppinger, 11th International Festival, Imperia 1969 is an example of the dangers awaiting Black if unacquainted with the theory of the Sicilian. 11. ... g5 12. Bg3 Qb6∞ is an interesting alternative line for Black.
12. f4

12. ... Rxc3! “In such a position, Black needs to keep his cool, but, at the same time, adopt drastic measures, otherwise things will end badly. Hence the sacrifice, which we might now call ‘classic’, is the only possible and promising reaction. The game now becomes truly difficult for both contenders”. (Paoli).
“It is interesting 12. ... g5!? 13. fxg5 hxg5 14. Bxg5 Be7 even though after 15. h4! Rxc3 16. bxc3 Nxe4 17. Bxe7 Qxe7 18. Qe3 White seems to me, albeit slightly, preferable”. (Tatai).
13. bxc3 Qc7. “Now, however, 13. ... g5 can be considered better than on the previous note. To be sure, the complications after 14. e5!? e 14. Nxe6 would make anyone’s hair stand on end”. (Tatai).
14. c4 bxc4 15. Qxc4 Qxc4 16. Bxc4 Nxe4 (Δ ... ... g7-g5)
17. Be1. “Prophylactic, given the threat ... g7-g5 with complications favourable to Black”. (Paoli).
17. ... Be7 18. Rf1 d5 19. Bb3 Ndc5. “Black has only a Pawn for the Exchange, but his position is solid and the White Rooks have no outlets”. (Tatai).
20. Ba5 0-0 21. g3 Bf6 22. c3 Rc8. “It should be noted that both the White Rooks have no open files to occupy at the moment, while the Black unites are ideally placed”. (Paoli).
23. Kb2 Bc6. “The threats are gathering and White is forced to ease up, but he gives up an important and well-placed Knight”. (Paoli).
24. Nxc6 Rxc6 25. Bb4. “After the fall of the Pawn at c3 Black’s compensation will be more than abundant”. (Tatai).
25. ... Nb7 (Δ ... a6-a5)

26. f5. “The return of the Exchange is tempting but incorrect: 26. Rxd5 exd5 27. Bxd5 Rb6! (28. Bxe4 Rxb4+). On the other hand the threat of ... a6-a5 becomes pressing and since there is no defence, White throws himself into the fray”. (Paoli).
26. ... a5 27. fxe6 fxe6 28. Rxf6 gxf6 29. Ba3 Kg7? (29. ... Rxc3!−+)
“It is not well clear why Black did not take on c3 with the Rook (29. ... Nxc3? 30. Rd3 Nb5 31. Rxd5!)”. (Paoli).
30. c4 dxc4 31. Rd7+ Kg6 32. Bc2 Rb6+ 33. Kc1 f5 34. Bxe4 fxe4

35. Rd4? “If 35. Bb2 then 35. ... Nd6. Not 35. ... e3 36. Bd4 e2 37. Kd2”. (Paoli).
White goes on the wrong track. Correct was to centralise the King at once with 35. Kd2 Kf5 36. Ke3 e5 and the ending, albeit somewhat drawish, appears easier to play Black.
35. ... Kf5 36. Rxc4 Nd6 37. Rc5+ Kg4 38. Rxa5 Nc4 39. Ra7 e3 40. Ra4 Rc6 41. Kd1 Kf3 ½–½. “This is the result also given in the ChessBase online database, but it is evident that the final position is easily won for Black”. (Tatai).