Borislav Ilinčić (Serbia)  
Win 7+11

1.Bxa6!   Variation A: 1...Qe8 2.d5! [2.Ba3? Nd5 3.Bc5+ Nb6 4.d5 Qf7! (4...Qd8? 5.d6! Nf3 6.Bb5+ Kb8 7.dxc7+ Qxc7 8.Bxb6 Qd7 9.Be2! g3 10.hxg3 hxg3 11.Be3 Qc7 12.Qxh5 g2 13.Qg6 g1Q+ 14.Bxg1 Nxg1 15.Qxg1+-) 5.Bb5+ Kb8 6.Bxb6 cxb6 7.Qxb6+ Qb7!=] 2...Nxd5 3.c4! Nb6 4.Be5! Na8 [4...Qxe5 5.Qxe5 Kxa6 6.Qxc7 Nf3 7.Qxc6 Nd2+ 8.Kc2 Ndxc4 9.Qxe4 g3 10.h3!+- (10.hxg3? hxg3=) ] 5.c5! Qb8+ [5...Nf3 6.Bxc7+-; 5...Qxe5 6.Bc8+ Kb8 7.Qa6+-] 6.Bb5+ Kb7 7.Qa6# Block on b8.   Variation B: 1...Qd5 2.Qa4! Kb6 3.Ba3! Nd7 or 3....Nd3 4.Bc4! Qa5 5.Bc5+ Nxc5 6.dxc5+ Qxc5 7.Qa6# Block on c5.   This study was inspired by the author's personal game: Stefanović-Ilinčić 0:1, Championship of Chess Club Svoboda, Brežice, Slovenia 1969 (variation B). The game was published in Šahovski Glasnik, Zagreb 1969, issue 5, page 132.