<div class='user_solution'><span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">1.Qh6+! </span></b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">try : 1.Kf4? h1Q 2.f6 Nde3! 3.Kg5 Kg2! 4.f7 Qh8 5.Qd6 Qg7+ 6.Qg6 Qe5+ 7.Bf5 Kf3! 8.f8Q Qf4+ 9.Kh5 Qh2+ 10.Kg5 Qf4+ =</span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">1...Nxh6 2.f6+ Ng4! 3.Bxg4+ Kh4 4.Kg2 Nf2 5.Kxh2 Nxg4+ 6.Kg2 Nxf6 7.Kf3 Kg5 8.Ke3 Kg4 9.e5 Nd5+ 10.Kd4 Nc7 11.Kc5 Kf5 12.Kc6 Na6 13.Kd6 Kg6 14.Kd7! </span></b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">14.e6? Kf6 15.e7 Kf7 16.Kd7 Nc5+=</span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">14...Nb8+ 15.Kc7 Na6+ 16.Kb6 Nb4 17.Kb5 Nd5 18.Kc6 Nb4+ 19.Kd7 Na6 20.e6 Kf6 21.e7 Nc5+ 22.Kd6 Ne4+ 23.Kc6! </span></b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">try : 23.Kc7? Kxe7 24.a6 Nd6!=</span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">23...Kxe7 24.a6 </span></b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">+-<b> </b></span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"> </span></span> <p class="MsoNormal" style="margin-bottom: 0cm; line-height: normal;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"> </span></p> <p class="MsoNormal" style="margin-bottom: 0cm; line-height: normal;"><b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"> </span></b></p></div>