With the exception of the two Olympiads in which he competed, Roberto Cosulich rarely played outside of Italy. One of these times was when he tore up an invitation to Tunisia.
“The 6th International
Tournament in Tunis, to which an Italian Master is invited every year, was
narrowly won by the Dutch International Master Ree, the only undefeated player. Tied at second place were Austrian Grandmaster Robatsch and Master Cosulich. The defeat suffered by our representative in the direct clash with Robatsch prevented him from winning the tournament”. L’Italia Scacchistica, No. 5, May 1972, p. 113. |
Roberto Cosulich – Slim Bouaziz
6th International Tournament; Tunis, December 1971
Sicilian Defence B51
6th International Tournament; Tunis, December 1971
Sicilian Defence B51
1. e4 c5 2. Nf3 d6 3. Bb5 Nc6 4. Bxc6 bxc6 5. 0-0 e6 6. e5! d5 7. d3 Ne7 8. c4 Qc7. If 8. ... Ng6 then 9. Nc3 Be7 10. b3 0-0 11. Na4!⩲ Cosulich – Paoli, 13th New Year’s International Tournament, Reggio Emilia 1971.
9. Bf4 Ng6 10. Bg3 Be7 11. Nc3 Qb7 12. Na4 Nf8 13. Rc1 Nd7 14. d4 cxd4 15. c5 Qc7 16. Re1 Ba6 17. Nxd4 Rb8
9. Bf4 Ng6 10. Bg3 Be7 11. Nc3 Qb7 12. Na4 Nf8 13. Rc1 Nd7 14. d4 cxd4 15. c5 Qc7 16. Re1 Ba6 17. Nxd4 Rb8
18. Nf5?! A tempting but unsound sacrifice, although at first glance White’s storming attack may seem doomed to success. More systematic is 18. a3 (so as to prevent ... Rb8-b4 and also preparing for b2-b4) 18. ... 0-0 19. f4 leaving White with a clear superiority on both wings.
18. ... exf5 19. e6 f4 20. exd7 Kd8 21. Rxe7. If you say a you must say b.
21. ... Kxe7 22. Bh4 f6. Clearly not 22. ... Kxd7? because of 23. Qg4+ Ke8 24. Qxg7 with too many threats.
23. Qg4
18. ... exf5 19. e6 f4 20. exd7 Kd8 21. Rxe7. If you say a you must say b.
21. ... Kxe7 22. Bh4 f6. Clearly not 22. ... Kxd7? because of 23. Qg4+ Ke8 24. Qxg7 with too many threats.
23. Qg4
23. ... Kf8? Probably Cosulich was expecting 23. ... Kf7 when 24. Re1 Bd3! gives White hardly anything more than a draw by perpetual check after 25. Qe6+ Kg6 26. Qg4+. But both he and Bouaziz overlooked here the way of coming out of the storm, say 23. ... Qe5!! 24. Qxg7+ Ke6 when White is left with a handful of flies.
24. Re1 Rd8
24. Re1 Rd8
25. Bxf6! A devastating blow. Bouaziz was still hoping for 25. Re7? Kxe7 26. Qxg7+ Ke6 27. Qxf6+ Kxd7 28. Qf5+ Ke8 29. Qe6+ Kf8 with a draw by perpetual check. The rest is a foregone conclusion.
25. ... gxf6. Neither 25. ... Qxd7 26. Qg5!! nor 25. ... Rxd7 26. Qe6 Qc8 27. Be7+ Ke8 28. Qe5! saves Black.
26. Qe6 Kg7 27. Qg4 Kf8 (27. ... Kh6 28. Re7+−)
28. Qf5 Kf7 (28. ... Qxd7 29. Qxf6+ Kg8 30. Re7+−)
29. Qh5 Kf8 30. Re8 Kg7 31. Re7 1–0.
25. ... gxf6. Neither 25. ... Qxd7 26. Qg5!! nor 25. ... Rxd7 26. Qe6 Qc8 27. Be7+ Ke8 28. Qe5! saves Black.
26. Qe6 Kg7 27. Qg4 Kf8 (27. ... Kh6 28. Re7+−)
28. Qf5 Kf7 (28. ... Qxd7 29. Qxf6+ Kg8 30. Re7+−)
29. Qh5 Kf8 30. Re8 Kg7 31. Re7 1–0.

















































