<div class='user_solution'><div><b>1.g7! Rfb8! </b>[1...Rg8 or 1...Rc8 2.Bxd4+-] <b><br /></b></div><div><b>2.Bc1! </b>[Logical try: 2.Bxd4? Rxb2! 3.Bxb2 Rxb2 4.Nxf3 Rb1+ 5.Kf2 Rxg1 6.Kxg1 Kf7 7.e6+! Bxe6 8.Ng5+ Kxg7 9.Nxe6+ Kf6 10.Nc7 Ke5 11.Kf2 Kd4! possible 12.Ke2 Kc3=] <b><br /></b></div><div><b>2...Rxb2! </b>[2...Rc7 3.Nd3 Kf7 4.Nxf3 Kg8 5.Nxd4+-; 2...Rg8 3.Nxf3 Bc8 4.Rg2! Kf7 5.Bh6 Rb6 6.Rh2+-] <b><br /></b></div><div><b>3.Bxb2 Rxb2 <br /></b></div><div>[3...f2+ 4.Kxf2 Rxb2+ 5.Kf3!+-] <b><br /></b></div><div><b>4.Nxf3 </b>[4.g8N+? Kf8! 5.Nxf3 Rb1+ 6.Kf2 Rxg1 7.Kxg1 Kxg8=] <br /></div><div> <b>4...Rb1+ 5.Kf2! </b>[5.Kd2? Rxg1 6.Nxg1 Kf7 7.Nf3 Kxg7 8.Nxd4 Kf7=] <b><br /></b></div><div><b>5...Rxg1 </b>[5...Rb2+ 6.Kg3 Kf7 7.Kf4 Kg8 8.Nxd4 Rxa2 9.e6+-] <b><br /></b></div><div><b>6.Kxg1 Kf7 </b>[6...Be6 7.Nxd4 Bg8 8.Nf5+ Ke6 9.Nh6+-] <b><br /></b></div><div><b>7.e6+! Bxe6 8.Ng5+ Kxg7 9.Nxe6+ Kf6 10.Nc7! </b>[10.Nxd4? Ke5 11.Ne2 Ke4! 12.Kf1 Kd3 13.Ke1 Kc2=] <b><br /></b></div><div><b>10...Ke5 11.Kf2 </b>[or 11.Kf1 ] <br /></div><div><b>11...Kd6 </b>comparing with the logical try now 11...Kd4 is not possible <b>12.Nb5+ Kc5 13.Na3 Kb4 14.Nb1!+-</b></div><br /></div>