<div class='user_solution'><span class="fontstyle0">1.Bc1/d2/e3/h6? (</span><span class="fontstyle2">ABCD</span><span class="fontstyle0">) – 2.Sg7# (</span><span class="fontstyle2">E</span><span class="fontstyle0">), 1... Q:f7! (unpin bQ),<br /></span><span class="fontstyle2"><b>1.Qh5!</b> </span><span class="fontstyle0">(unpin bQ) – 2.B:f6# (2.Bc1/d2/e3/h6? 2.Sg7#?), 1... Qa1+ 2.Bc1# (</span><span class="fontstyle2">A</span><span class="fontstyle0">), 1... Qc3+ 2.Bd2# (</span><span class="fontstyle2">B</span><span class="fontstyle0">), 1... Qe5+/:e6+ 2.Be3# (</span><span class="fontstyle2">C</span><span class="fontstyle0">), 1... Qh6 2.B:h6# (</span><span class="fontstyle2">D</span><span class="fontstyle0">), 1... Qg7 2.S:g7# (</span><span class="fontstyle2">E</span><span class="fontstyle0">), 1... Qg6 2.Qg4#, 1... Q:g5 2.Q:g5#, 1... Qf7 2.Q:f7#<font size="2"> <font face="Arial">(</font></font></span><span class="fontstyle0" style="color: rgb(64, 64, 64);"><font face="Arial" size="2">switchback).</font></span>  <br style="font-variant-numeric: normal; font-variant-east-asian: normal; line-height: normal; text-align: -webkit-auto; text-size-adjust: auto;" /><div><span class="fontstyle0">Unpin, check provocation, 8 Defenses bQ, battery play, Duel bQ and wB, </span><span class="fontstyle0" style="color: rgb(64, 64, 64);">switchback.</span>  <br style="font-variant-numeric: normal; font-variant-east-asian: normal; line-height: normal; text-align: -webkit-auto; text-size-adjust: auto;" /></div><br /></div>