<div class='user_solution'><span style="text-align:justify;display:block;" class="MsoNormal"><b><span lang="PT-BR">Solution:</span></b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><span lang="PT-BR"> </span></b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><span lang="PT-BR">1.Nf3+ Kxh3 </span></b><span lang="PT-BR">[1...Kh5 2.Nf6+ Kg6 3.Nd5+-]<b> 2.Nhg5+ Nxg5 3.Nxg5+ Kg2 4.Ne4 Kf1 5.Ke3 Ke1 6.Nf2 b3 7.a3 b2 8.Nd3+ Kd1 9.Nxb2+ Kc2 10.Nc4 Kc3 11.Nd6 Kb3 12.Nb5 Kc4 13.Nd4 Kc3 14.Ke4 Kc4 15.Ke5 Kc5 16.Nf3 Kc4 17.Nd2+ Kc3 18.Nb1+ Kb2 19.Kd4+-</b></span></span></div>