<div class='user_solution'><p class="MsoNormal"><b><span lang="EN-US">1.Qd5+!! </span></b></p> <p class="MsoNormal"><b><span lang="EN-US"> </span></b></p> <p class="MsoNormal"><span lang="EN-US">[<b>thematic try:</b> 1.Qxb5+? Qf5+ 2.Qxf5+ Rxf5 3.Nxg3+ Kg6 </span></p> <p class="MsoNormal"><span lang="EN-US">4.Nd4 Rf7/Rf8! 5.Ngxe2 Rh7+/Rh8+ 6.Kg2 Rxh17.Kxh1 </span></p> <p class="MsoNormal"><span lang="EN-US">Troitzky position without the bPb5</span></p> <p class="MsoNormal"><span lang="EN-US">7...b5!=; </span></p> <p class="MsoNormal"><span lang="EN-US"> </span></p> <p class="MsoNormal"><span lang="EN-US">1.Nxg3+? Kg6!=] <br /></span></p><p class="MsoNormal"><span lang="EN-US"><br /></span></p> <p class="MsoNormal"><b><span lang="EN-US">1...Qf5+ </span></b></p> <p class="MsoNormal"><span lang="EN-US">[1...Kg6 2.Qg5+ Kh7 3.Kg4+ Rh2 4.Rxh2+ gxh2 </span></p> <p class="MsoNormal"><span lang="EN-US">5.Qh4+ Kg8 6.Qd8+ Kh7 7.N4g5+ Kg6 8.Nxf7+-] </span></p> <p class="MsoNormal"><b><span lang="EN-US">2.Qxf5+ Rxf5 </span></b></p> <p class="MsoNormal"><b><span lang="EN-US">3.Nxg3+ Kg6 </span></b></p> <p class="MsoNormal"><b><span lang="EN-US">4.Nd4! </span></b><span lang="EN-US">original double fork position</span><span style="font-size: 5pt;" lang="EN-US"></span></p> <p class="MsoNormal"><span lang="EN-US">[4.Nxe2? Rh5+ 5.Kg2 Rxh1 6.Kxh1 b4! 7.N6d4 b3!=; </span></p> <p class="MsoNormal"><span lang="EN-US">4.Nxf5? Rxe6= <i>(4...Kxf5? 5.Nd4++-) </i>] </span></p> <p class="MsoNormal"><b><span lang="EN-US">4...Rf7 5.Ngxe2 </span></b></p> <p class="MsoNormal"><span lang="EN-US">[5.Ndxe2? Rh7+ 6.Kg4 Rxh1 7.Nxh1 b4/Kf6=] </span></p> <p class="MsoNormal"><b><span lang="EN-US">5...Rh7+ </span></b></p> <p class="MsoNormal"><b><span lang="EN-US">6.Kg2 Rxh1 </span></b></p> <p class="MsoNormal"><b><span lang="EN-US">7.Kxh1+- </span></b></p> <p class="MsoNormal"><span lang="EN-US">and we have a Troitzky win-position thanks to the bPb5</span></p></div>