Iuri Akobia
comm. Zadachy i Etiudy, 2010
Draw

Black own the initiative as have turn of a move. Thus, Black has two acceptable variants of play. We shall look each of them separately
1...Qxf7 main line B Now, at first sight is better the move 2.Sg3+ for rescue of wS. However, this is only a try. So, White sacrifice the Sh5: [main line A 1...Qxh5 2.Sg6 Qc5+ 3.Kxf3! (3.Rd4? Qc3+ 4.Rd3 Qc5+ 5.Kf4 Qxc6 6.f8Q Qc4+ 7.Ke3 Qc1+ 8.Kxf3 Kg1= ) 3...Qc3+ 4.Kg4! (4.Kf4? Qf6+! 5.Ke3 Qc3+ 6.Kf4 Qf6+ 7.Ke3 Qc3+ perpetual check) 4...Qxc6 5.Re1+ Kg2 6.f8Q Qxg6+ 7.Kh4 Qh7+ (main A1 7...Qd3 8.Qf6!! Qh7+ 9.Kg5! Qg8+! 10.Kh6!! h1Q+ 11.Rxh1 Kxh1 12.f4!!+- ) 8.Kg5! Qd3 9.Rc1!! (9.Qa8+? Kxf2= ) 9...Qd2+! 10.Qf4 Qd8+ 11.Kg4! (11.Kh5? Qe8+ 12.Kg4 (12.Kh4 h1Q+ 13.Rxh1 Qh8+ 14.Kg4 Kxh1!= ) 12...Qe2+ 13.f3 Qe6+ 14.Qf5 Qxf5+ 15.Kxf5 Kxf3= ) 11...Qd7+ (11...Qg8+ 12.Qg5+- ) 12.Qf5! Qg7+ (12...Qd4+ 13.f4!+- ) 13.Qg5+- ] 2.Se6! [2.Sg3+? Kg2 3.Se6 Qa7+ 4.Rd4 Qa3+ 5.Rd3 Qc1+= ] 2...Qxh5 3.Rc4! [3.Rd4? Qe5+ 4.Kxf3 (4.Be4 Qxe6 5.Kxf3 Qb3+ 6.Ke2+ Kg1= ) 4...Qh5+ 5.Rg4 (5.Kg3+ Kg1= ) 5...Qd5+ 6.Bxd5 stalemate] 3...Qe5+ 4.Kxf3 Qb2! 5.Rd4! Qc2 6.Be4! [6.Ke3+? Kg1 7.Rg4+ Kf1 8.Bg2+ Ke1= ]
6...Kg1!! [6...Qb3+ 7.Ke2+ Kg1 8.Rd1+ Qxd1+! 9.Kxd1 Kxf2 10.Sg5!+- ; 6...Qc3+ 7.Ke2+ Kg1 8.Rd1+ Qe1+ 9.Rxe1# ] 7.Bxc2 Phoenix!-> 7...h1Q+ 8.Ke2! [8.Ke3? Qh3+ 9.Ke2 Qxe6+= ] 8...Qh5+ 9.f3 Qb5+! [9...Qe5+ 10.Re4+- ; 9...Qh2+ 10.Kd1+- ] 10.Ke3! [10.Bd3? Qb2+! (10...Qe5+? 11.Re4 Qb2+ 12.Kd1+- ) 11.Ke3 Qc1+! 12.Ke4 Qc6+ 13.Ke5 Qxf3= ; 10.Rd3? Qe5+ 11.Re3 Qb5+ 12.Kd1 (12.Kd2 Qa5+ 13.Kc1 Kf2= ) 12...Qd7+ 13.Kc1 Kf2 14.Sc5 Qa7! 15.Rc3 Qa1+ 16.Kd2 Qe1+ 17.Kd3 Kxf3= ] 10...Qe5+! 11.Re4 Qc3+! 12.Bd3 Qc1+ 13.Ke2! [13.Kd4? Qa1+ 14.Kc4 Qc1+ 15.Kd5 Qd1 16.Rd4 Qxf3+= ] 13...Qf1+ [13...Qb2+ 14.Kd1! Qa1+ 15.Kd2 Qa2+ 16.Bc2 Qa5+ 17.Kd3 Qa3+ 18.Ke2 Qa6+ 19.Ke3 Qa3+ 20.Kf4 Kf2 21.Sd4+- ] 14.Kd2! Qxf3 15.Sf4!! [try 15.Re1+!? Kh2! (15...Kg2? 16.Be4+- ; 15...Kf2? 16.Rf1++- ) 16.Re2+ Kg1! (16...Kg3? 17.Re3+- ; 16...Kh1? 17.Be4+- ) 17.Re1+ Kh2 positional draw] 15...Qf2+ 16.Se2+! Kf1 17.Rf4 and wins [17.Bc4? Qe1+ (17...Qc5? 18.Sc3+ Kg2 19.Bd5+- ) 18.Ke3 Qf2+ 19.Kd2 Qe1+ perpetual check.

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