<div class='user_solution'><span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">1.Ra8! </span></b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">Thematic try :</span></b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"><span>  </span>1.Re8? Rf8 2.Rxf8 Rxf8 3.Ra7 h2+ 4.Kxh2 Rf2+ 5.Kg1 Rf1+! <i>(5...Rf7? 6.g7++-) </i>6.Kxf1 Qc4+ 7.Ke1 Qe4+! 8.Kf2 Qc2+ 9.Kg1 Qd1+ 10.Kh2 Qe2+ 11.Kh3 Qf1+!=</span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">1...Rf8 2.Rxf8 h2+ 3.Kxh2 Rxf8 4.Re7 Rf2+ 5.Kg1 Rf7 6.g7+! Qxg7 </span></b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">6...Rxg7 7.Qf6 +-</span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;">7.Re8+ Rf8 8.Rxf8+ Qxf8 9.Qxf8# </span></b><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"></span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;, serif;"> </span></span></div>