<div class='user_solution'><span style="text-align:justify;display:block;" class="MsoNormal"><b><u>1.Qf7</u>+</b>! </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>Try:</b>1.Bf7+Kh4 2.Qd8+ Bg5 3.Qd1 Qg4+=</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>1...Kxh6</u> </b></span> <span style="text-align:justify;display:block;" class="MsoNormal">1...Kh4 2.fxe3 Qxe3+ <i>(2...Qb1+ 3.Qf1 Qg6+) </i>3.Qf2+-</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>2.Qf8+ Kh5 3.Bf7+ Kg4 4.Qg8+ Bg5 5.Be6+ Kh5</u> </b></span> <span style="text-align:justify;display:block;" class="MsoNormal">5...Kf4 6.Qb8+ Qe5 7.Qb4+ Qe4 8.Qd6+ Qe5 9.Qd2+ Ke4 10.Qe2+ Be3 11.Qxe3#</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>6.Qe8+ Kh6 7.Qf8+ Kh5 8.Bf7+ Kg4</u> </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>Main </b>8...Kh4 9.Qh8+ Kg4 10.f3+ Kxf3 11.Bd5! Qxd5 12.Qh1+</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>9.f3+</u></b><u>!<b>Qxf3 </b></u></span> <span style="text-align:justify;display:block;" class="MsoNormal">9...Kxf3 10.Bd5+-</span> <span style="text-align:justify;display:block;" class="MsoNormal"><b> </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>10.Bh5</u>+-</b></span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span></div>