<div class='user_solution'><span class="MsoNormal" style="text-align:justify;display:block;"><b>1.e4! </b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>Try </b>: 1.Be7? Kc6! 2.e4 Rf3 3.e5 Rg3+ 4.Kh7 <i>(4.Kf8 Nb5 5.e6 Kd5 6.f7 Kxe6 7.Ke8 Nc7+–+) </i>4...Nf7 5.e6 Ng5+ 6.Kh6 Nxe6 7.f7 Rf3 8.Kg6 Kd5 9.Bb4 Kd4+-</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>1...Rg5+ 2.Kf8 Kc8 3.Be7 Nxe4 </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">3...Nb5 4.f7 Rg6 5.Bf6! Kd7 6.Bg7 Nc7 7.Kg8=</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>4.f7 Rg2 5.Ke8 Re2 6.b4! </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">6.f8Q? Nd6#</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>6...Nd6+ 7.Kf8 Kd7 8.Bxd6 Kxd6 9.b5! </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">9.Kg7? Rg2+ 10.Kf8 Kd7! 11.b5 Rf2 12.b6 Ke6!–+</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>9...Ke6 10.Ke8 Ra2 11.f8N+!= </b></span></div>