<div class='user_solution'><span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 16pt; font-family: 'FigurineCB AriesSP', sans-serif;">1.</span></u></b><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'FigurineCB AriesSP', sans-serif;">Na5+</span></u></b><b><u><span style="font-size: 12pt;">! </span></u></b><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">Kxc5 </span></u></b><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p></o:p></span></u></b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">[1...Kd5  2.f7  Qb8+  3.Kd7  Qa7+  4.Ke8 <i>(4.Ke8 </i> <i>Ke6 </i> <i>5.f8N+=) </i>]<o:p></o:p></span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">2.g7</span></u></b><b><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">  </span></b><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">[2.f7?  Qb8+  3.Ke7  Qd6+ -+]<o:p></o:p></span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">2...Qb8+</span></u></b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p></o:p></span></u></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">3.Ke7 Kd5 </span></u></b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p></o:p></span></u></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">4.f7 Qc7+ </span></u></b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p></o:p></span></u></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">5.Ke8</span></u></b><b><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></b><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">[ 5.Kf8? 0 Qd8# -+] </span><span style="font-size: 12pt; font-family: 'Times New Roman', serif; color: red;">А</span><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif; color: red;">)</span><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> <b><u>5...Ke6</u> </b><o:p></o:p></span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">[</span><span style="font-size: 12pt; font-family: 'Times New Roman', serif; color: red;">В</span><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">)5...<u>Qe5+  6.Kf8  Qb8+  7.Ke7  Qd6+  8.Ke8  Ke6</u>  <u>9.f8N+  Kf6</u><o:p></o:p></span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">   <u>10.g8N+  Kg7  11.Ne7</u>  <i>(11.Nd7?</i> <i>Kxg8-+) </i><u>11...Qb8+</u> <o:p></o:p></span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">   <u>12.Kd7  Qa7+  13.Kd6!</u>  <i>(13.Ke6?</i> <i>Qxa5 </i> <i>14.Nd7 </i> <i>Qa6+  -+)   </i><u>13...Qxa5  14.Ne6+  Kf7  15.Nc6  Qa3+</u>  (15...Qd2+  16.Ned4!= <i>(16.Ncd4 ?</i> <i>Kf6</i></span><i><span style="font-size: 12pt; font-family: 'Times New Roman', serif;">-+</span></i><i><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">) </span></i><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">) <u>16.Nc5</u></span><u><span style="font-size: 12pt; font-family: 'Times New Roman', serif;">=</span></u><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">]</span></u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p></o:p></span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">6.f8N+! Kd6 </span></u></b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p></o:p></span></u></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">7.g8N! </span></u></b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">[ZZ! <b>Qxa5</b><o:p></o:p></span></u></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">8.Kf7  Qf5+ </span></u></b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p></o:p></span></u></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">9.Kg7 Qg5+</span></u></b><u><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p></o:p></span></u></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;">10.Kf7=</span></b><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p></o:p></span></span> <span class="MsoNormal" style="text-align:justify;display:block;"><span lang="EN-US" style="font-size: 12pt; font-family: 'Times New Roman', serif;"> </span></span></div>