<div class='user_solution'><font face="Times New Roman" size="3"></font><span lang="FR" style="font-size: 14pt; mso-ansi-language: FR;"><font face="Times New Roman"><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">1.b4! Sa2 2.b5! Sc3 3.b6! cb </span></b></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">4.Kf7? Sd5 5.Ke6! </span><span lang="FR" style="font-size: 14pt; mso-ansi-language: FR;">Sc7 6.Kd7! Sa6 7.Kc8! b5 8.Kb7! </span><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">=</span></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">But: </span></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">4… Sc5! (5.Ke6 Ke2 6.Kd7 Kd3 7.Kc8 Kc4 8.Kb7 Kc5! – black wins)</span></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><b style="mso-bidi-font-weight: normal;"><span lang="FR" style="font-size: 14pt; mso-ansi-language: FR;">4.c7! Se5! 5.c8S!! b5 (5.c8Q? Se7+!) 6.Sa7! b4 </span></b></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><b style="mso-bidi-font-weight: normal;"><span lang="FR" style="font-size: 14pt; mso-ansi-language: FR;">7.Sc6! b3 </span></b><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">8. Sa5! b2 9.Sc4! b1S = =<span style="mso-spacerun: yes;">  </span>(9… b1Q 10.Sd2+!) </span></b></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">White-black echo!</span></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">1.Kf7? Sd5 2.Ke6! </span><span lang="FR" style="font-size: 14pt; mso-ansi-language: FR;">Sc7 3.Kd7! Sa6 4.Kc8! b5 5.Kb7! </span><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">=</span></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">But: 1… Sc5! (2.Ke6 Ke2 3.Kd7 Kd3 4.Kc8 Kc4 </span></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">5.Kb7 Kc5! – black wins)</span></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt; -ms-text-autospace:; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><span lang="EN-US" style="font-size: 14pt; mso-ansi-language: EN-US;">White-black echo!</span></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font size="3"> </font></p><p style="margin: 0cm 0cm 0pt;"><span><span lang="EN" style="color: rgb(34, 34, 34); font-size: 14pt; mso-ansi-language: EN;">White</span></span><span lang="EN" style="color: rgb(34, 34, 34); font-size: 14pt; mso-ansi-language: EN;"> <span>Excelsior-race</span> <span>and</span> <span>black long</span> <span>echo</span> <span>Excelsior</span></span></p></font><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"></p></span><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"></p><p style="margin: 0cm 0cm 0pt; tab-stops: 35.4pt 70.8pt 106.2pt 141.6pt 177.0pt 212.4pt 247.8pt 283.2pt 318.6pt 354.0pt 389.4pt 424.8pt 460.2pt 495.6pt 531.0pt 566.4pt 601.8pt 637.2pt 672.6pt 708.0pt 743.4pt 778.8pt 814.2pt 849.6pt 885.0pt 920.4pt 955.8pt 991.2pt 1026.6pt 1062.0pt 1097.4pt 1132.8pt 1168.2pt 1203.6pt 1239.0pt 1274.4pt 1309.8pt 1345.2pt 1380.6pt 1416.0pt; mso-layout-grid-align: none;"><font face="Times New Roman" size="3"></font></p></div>