<div class='user_solution'><span style="text-align:justify;display:block;" class="MsoNormal"><b>1.Kf7! </b></span> <span style="text-align:justify;display:block;" class="MsoNormal">1.Kh8? Qc3! <i>(1...Qd1? 2.g8N+=) </i>2.g8Q Qxf3–+</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>1...Nxc4 </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>main </b><u>1...Qc3 2.g8N</u>+! (Try in this line: 2.Bf4+? Kh5! <i>(2...g5? 3.g8N+ Kh5 4.Nxf6+ Qxf6+ 5.Kxf6=) </i>3.Nd2 Qd3 4.g8Q Nxc4 5.Qh8+ Kg4 6.Qxf6 Qf5 7.Nxc4 Kxf4 8.Nd6 Qxf6+ 9.Kxf6 g5–+) <u>2...Kh7 3.Nxf6+ Kh8 4.Ne5</u>=</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>2.g8N+! </b></span> <span style="text-align:justify;display:block;" class="MsoNormal">2.g8Q? Ne5+ 3.Bxe5 Qa2+ 4.Kf8 Qxg8+ 5.Kxg8 fxe5 6.Nxe5 g5–+</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>2...Kh7 </b></span> <span style="text-align:justify;display:block;" class="MsoNormal">2...Kh5 3.Nxf6+ Qxf6+ 4.Kxf6 Nxb4 5.Nd4=</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>3.Nxf6+ Kh8 4.Nh4 Ne5+ 5.Bxe5 Qa7+ 6.Kxg6!</b></span> <span style="text-align:justify;display:block;" class="MsoNormal">6.Kf8 Qg7+ 7.Ke8 g5 8.Ng4 gxh4–+</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>6...Qg1+ 7.Kf7 Qg7+ 8.Ke8! </b></span> <span style="text-align:justify;display:block;" class="MsoNormal">8.Ke6? Qb7–+</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>8...Qg5 9.Kf7! </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>Try :</b> 9.Nf3? Qg6+ 10.Ke7 Qg7+ 11.Ke8 Qa7! <i>(11...Qb7? 12.Nh4! Qa8+ 13.Kf7=) </i>12.Nh4 Nd4 13.Ng4+ Kh7 14.Nf6+ Kh6 15.Bf4+ Kg7 16.Nh5+ Kh7 17.Nf6+ Kh8 18.Bh6 Qb8+ 19.Kf7 Qc7+ 20.Kg6 Qe7–+</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;;">9...Qxh4 10.Kg6 Qxb4 11.Nd5+ Kg8 12.Nxb4=</span></b></div>