<div class='user_solution'><p class="MsoNormal"><b><span lang="EN-GB">1.a5! </span></b></p> <p class="MsoNormal"><span lang="EN-GB">[1.Kb4? Ng6! 2.a5 Ne7 3.a6 Nc8 4.Ka5 Kf6!! <i>(4...Ke5? 5.Nb7 Nf7 6.b6+-) </i></span></p> <p class="MsoNormal"><span lang="EN-GB">5.Nb7 Nf7! 6.b6 Ne5!=] </span></p> <p class="MsoNormal"><b><span lang="EN-GB">1...Nhf7 </span></b></p> <p class="MsoNormal"><span lang="EN-GB">[1...Ng6 2.a6+-] </span></p> <p class="MsoNormal"><b><span lang="EN-GB">2.Kb4! </span></b></p> <p class="MsoNormal"><span lang="EN-GB">[2.a6? Nd6 3.Nb7 Nxb5+=; </span></p> <p class="MsoNormal"><span lang="EN-GB">2.Ka4? Nd6 3.a6 Nc8 4.Ka5 Kf6!!=] </span></p> <p class="MsoNormal"><b><span lang="EN-GB">2...Nd6 </span></b></p> <p class="MsoNormal"><b><span lang="EN-GB">3.Nb7!! </span></b><span lang="EN-GB">two knights fork </span></p> <p class="MsoNormal"><span lang="EN-GB">[3.a6? Nc8=] </span></p> <p class="MsoNormal"><b><span lang="EN-GB">3...N8xb7 </span></b></p> <p class="MsoNormal"><span lang="EN-GB">[3...Ne6 4.Nxd6++-; </span></p> <p class="MsoNormal"><span lang="EN-GB">3...Nc8 4.Nxd8+-; </span></p> <p class="MsoNormal"><span lang="EN-GB">3...N6xb7 4.a6 Ke5 5.a7+-; </span></p> <p class="MsoNormal"><span lang="EN-GB">3...Nxb5 4.Nxd8 Nc7 5.Kc5+-] </span></p> <p class="MsoNormal"><b><span lang="EN-GB">4.a6 Nxb5 <br /></span></b></p><p class="MsoNormal"><b><span lang="EN-GB">5.axb7 </span></b></p> <p class="MsoNormal"><span lang="EN-GB">[5.Kxb5? Nd6+ 6.Kc6 Nc8 7.Kc7 Na7 8.Kb7 Nb5 9.Kb6 Nd6 10.Kc6 Nc8=] </span></p> <p class="MsoNormal"><b><span lang="EN-GB">5...Nc7 </span></b></p> <p class="MsoNormal"><span lang="EN-GB">[5...Na7 6.Kc5!+- <i>(6.b8Q? Nc6+=) </i>] </span></p> <p class="MsoNormal"><b><span lang="EN-GB">6.Ka5!+- </span></b></p> <p class="MsoNormal"><span lang="EN-GB">[6.b8Q? Na6+=]</span></p></div>