<div class="user_solution"><p class="MsoNormal"><b><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">Sextuple pin-mate</span></b><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;"> (Perhaps show here for the first time*)<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">Changed mate — transferred mate — Refutations of tries and thematic mate in the same square (f4) — pin-mate with all different units (Q, R, B, S, P)<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">*1...Bf4<span>  </span>2.d8=Q+<span>  </span>Sxd8 (a) 3.Sf4# (A); 2...Bd6 (b)<span>  </span>3.Qxd6# (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">1.Sf4+? (A) Sxf4<span>  </span>2.g8=Q+ Se6<span>  </span>3.d8=Q#; 1...Bxf4!<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">1.Qh2? [2.Qd6, Qe5#]; 1...Sf4!<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;"><o:p> </o:p></span></p> <p class="MsoNormal"><b><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">1.g8=Q!</span></b><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;"> [2.d8=Q#] <o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">1...Bxc5<span>  </span>2.d8=Q+ Bd6 (b)<span>  </span>3.Sf4# (A) (sextuple pin-mate)<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">1...Bxf2<span>  </span>2.Sxf2 [3.d8=Q#]<span>  </span>cxb5 (defence that refutes the key 1.g8=B?)<span>  </span>3.Qa8# (X)<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">1...cxb5<span>  </span>2.Qa8# (X&#39;)<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size: 14pt; line-height: 115%; font-family: &quot;Times New Roman&quot;, serif;">*According to <i>Encyclopedia of Chess Problems. Themes an Terms</i>, 2012, page 331, &quot;Quintuple pin is the theorical maximun in an orthodox problem&quot;. <o:p></o:p></span></p></div><br />