Nº12 Zhukov Alexander & Osintsev Sergey

Win

Zhukov Alexander & Osintsev Sergey (Russia)

wKf1,Rc6,h6,Pf2/bKe5,Qg4,Ph2

White must save material 2 Rooks and Pawn vs. Queen to win
1.Rh5+!
1.Rc5+? Kd4=
1.Rxh2? Qd1+=

1…Kd4
1…Qxh5 2.Rc5++- skewer
1…Ke4 2.Rc4++- skewer

2.Rd6+
2.Rxh2? Qd1+ 3.Kg2 Qg4+= perpetual check

2…Ke4
2…Kc3 3.Rxh2 Qe4 4.Rh3++-

3.Rxh2 Qf4 double attack 4.Rd2!! indirect Rook defense main line A
thematic try 4.Rdh6? direct Rook defense 4…Qc1+ 5.Kg2 Qg5+ 6.Kh1 Qc1+= perpetual check;
thematic try 4.Rhh6? direct Rook defense 4…Qc1+ 5.Kg2 Qg5+=

4…Kf5
main line B 4…Qxd2 5.f3+ Kxf3 6.Rxd2+-
main line C 4…Qxh2 5.f3+ Kxf3 6.Rxh2+-

5.Rh5+!
thematic try 5.Rd5+? Ke6! 6.Rhh5 direct Rook defense 6…Qc4+! 7.Kg1 Qg4+! (7…Qxd5? bad exchange 8.Rxd5 Kxd5 9.Kg2 Ke4 10.Kg3 Ke5 11.Kg4 Kf6 12.Kf4+-) 8.Kh2 Qf4+ (8…Qf3? 9.Rhe5+! Kf6 10.Kg1! (10.Rf5+? bad exchange 10…Qxf5 11.Rxf5+ Kxf5 12.Kg3 Kg5=) 10…Qg4+ 11.Kf1 Qc4+ 12.Ke1 Qc3+ 13.Ke2 Qb2+ (13…Qxe5+ bad exchange 14.Rxe5 Kxe5 15.Ke3+-) 14.Kf3! (14.Ke3? Qxe5+ good exchange 15.Rxe5 Kxe5 16.Kf3 Kf5 17.Kg3 Kg5=) 14…Qxe5 15.Rxe5 Kxe5 16.Kg4 Kf6 17.Kf4+-) 9.Kg2 Qg4+= perpetual check

5…Kg6 6.Rhd5!+- direct Rook defense[thematic
try 6.Rdd5? direct Rook defense 6…Qc4+! 7.Kg1 Qg4+ 8.Kh2 Qf4+! (8…Qxh5+? bad exchange 9.Rxh5 Kxh5 10.Kh3! Kg5 11.Kg3 Kf5 12.Kf3+-) 9.Kg2 Qg4+! 10.Kf1 Qc4+= perpetual check]