<div class="user_solution"><span class="MsoNormal" style="text-align:justify;display:block;"><b>1.Bg1+! </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">1.Kxe2?+- gxf1Q+ 2.Rxf1 Rxc8 3.a6 Re8+ 4.Kf3 Rf8+=</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>1...Kh1 2.Kxe2 </b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b> </b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>With two lines </b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b> </b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 14pt;">A)</span> 2…Rc2+ 3.Kf3 gxf1Q+ 4.Rxf1 g2 5.Ra1! h2 6.Bc5+!! </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">6.Bb6+? g1N+!= <i>(6...g1Q? 7.Bb7 Rg2 8.Bd4+-) </i></span> <span class="MsoNormal" style="text-align:justify;display:block;">6.Be3+? g1Q! <i>(6...g1N+ 7.Kg4 Rxc8 8.Bf4 Kg2 9.Ra2+ Kf1 10.Bxh2 Ne2 11.a6 Nd4 12.Bg3 Nc6 13.Rf2+ Kg1 14.Rd2 Kf1 15.Kf3+-) </i>7.Bb7 Rc7 8.Bd5 Rd7 9.Ba8 Rd8 10.Be4 Re8=</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>6...g1Q 7.Bb7 Rg2 </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">7...Rb2 8.Be4+- </span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>8.Bd4 Qxa1 </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">8...Rg3+ 9.Ke2+/f4+-</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>9.Bxa1 Kg1 </b></span> <span class="MsoNormal" style="text-align:justify;display:block;">9...Rc2 10.Kg3+ Kg1 11.Bd4+-</span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><span> </span><b>10.Bd4+ Kf1 11.Ba6+- <br /></b></span><span class="MsoNormal" style="text-align:justify;display:block;"><b><br /></b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b> </b></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b><span style="font-size: 14pt;">B)</span> 2...gxf1Q+ 3.Rxf1 Rxf1</b> </span> <span class="MsoNormal" style="text-align:justify;display:block;">3...Rxc8 4.Be3+ Kg2 5.Rg1+ Kh2 6.a6 g2 7.Ra1 Re8 <i>(7...Kg3 8.Bf2+ Kg4 9.Ra4+ Kf5 10.Bg1+-) </i>8.a7 Kg3 9.a8Q Rxa8 10.Rxa8 h2 11.Rg8+-</span> <span class="MsoNormal" style="text-align:justify;display:block;">or 3.. Rc2+ 4.Kf3 +- similar to line A) </span> <span class="MsoNormal" style="text-align:justify;display:block;"> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>4.Kxf1 g2+ 5.Ke2 h2 6.Bf2!</b> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><i>6.Be3? g1Q 7.Bb7+ Qg2+ </i>check</span> <span class="MsoNormal" style="text-align:justify;display:block;"><i> </i></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>6...g1R!</b> </span> <span class="MsoNormal" style="text-align:justify;display:block;"><i>6...g1Q 7.Bb7+ Qg2 8.a6 Qxb7 9.axb7 Kg2 10.b8Q h1Q 11.Qg3#</i></span> <span class="MsoNormal" style="text-align:justify;display:block;"><i> </i></span> <span class="MsoNormal" style="text-align:justify;display:block;"><b>7.Bd4! Rg2+ 8.Kd3 Rg3+ 9.Be3 Rg7 10.Bf5! Kg2 11.Be4+ Kf1 12.a6 Rd7+ 13.Bd4+- </b></span></div>