<div class="user_solution"><span class="MsoNormal" style="text-align:justify;display:block;"><b>1.Ng5! </b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>Try I :</b> 1.Nd4? hxg6 2.f6 Nd5+ 3.Ke5 Nxf6 4.Kxf6 Rb6+ 5.Ne6 Rxa6 6.Rxh6+ Kg8 7.Rxg6+ Kh8=</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>1...hxg5+ </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">1...Ng8 2.Nxh7+-</span> <span class="MsoNormal" style="text-align:justify;display:block;">1...Kg7 2.Ne6+-</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>2.Kxg5! </b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>Try II :</b> 2.Kxg4? Nxg6 3.fxg6 Kg7 4.gxh7 Kh8 5.Rb2 <i>(5.Rh6 a4 6.Kh5 a3 7.a7 Ra8 8.Ra6 Kxh7 9.Kxg5 Kg7=) </i>5...Ra8!=</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>2...Nxg6 3.fxg6 g3 4.a7! </b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>Try III :</b> 4.Rxh7+? Kg8 5.Kh6 g2 6.a7 Rc8 7.Rc7 Rd8! 8.Rc1 a4 9.Rb1 Rf8! 10.Rb8 g1Q 11.Rxf8+ Kxf8 12.a8Q+ Ke7 13.Qe4+ Kf6 14.Qf3+ Ke6!=</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>4...Rc8 </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">4...Rd8 5.Rd2!+-</span> <span class="MsoNormal" style="text-align:justify;display:block;">4...Ra8 5.Rxh7+-</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>5.Rc2! Rg8 6.Kh5! g2 </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">6...Ra8 7.Kh6 hxg6 8.Rb2+-</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>7.g7+! Kxg7 8.Rxg2+Kf7 9.Rxg8+-</b></span></div>