<div class='user_solution'><b>1.a6! g1Q 2.a7!</b><br />2… Qb1 (threat 3… Kd3! 4.Be3 5.Kc4! Bb6 6.Kb5! Kb8<br />7.K*b6! a8Q 8.Qh7! Qc6 9.K*c6 Ka8 10.Qb7#)<br />3.Be3!! Kd3<br />(3…. K* e3 – stalemate)<br />4.Bb6!! Kc4 5.Kb7! Qh1 8.Kb8! Qh8 9.Kb7! = =<br />2… Qb6 (threat 3…. Qc7 4…. Qc8#<br />3.Bf4 Qc8+ 4.Bb8 Qc6#)<br />3.Bf4! Kf3 4.Bc7!! Q*c7 – stalemate<br />4…. Qb5 (threat 5… Ke4! 6.Bb6 Kd5! 7.Kb7 Qc6+!<br />8.Kb8 Q*b6 9.Ka8 Qc6+ 10.Kb8 Kd6 11.a8Q Qc7#)<br />5.Bb6!! Qc6+ 6.Kb8 Q*b6 7.Ka8! = =<br /><br /><b>2… Qc5</b> (threat 3…. Qc8#)  <b>3.Kb7! Qb5+ 4.Kc7! Qa6 5.Be3!! K*e3 6.Kb8! = =<br /><br /><br /></b>1.Be3? K*e3 2.a6 g1Q 3.a7 Kd4!! 4.Kb7 Kc5 5.a1Q Qg7+!<br />6.Ka6 Qf6+ 7.Ka7 Qb6#<br />7.Ka5 Qa1#<br />(7.Kb7 Qe7 8.Kc8 Qe8 9.Kb7 Qd7 10.Ka6 Qb5+ 11.Ka7 Qb6#)<br />1.Kb7? a8Q! 2.a6 Qg1+ 3.Kb8 Qc6 4.a7 Qb6 5.Ka8 Qc7 6.Bf4 Qc8<br />7.Bb8 Qc6#</div>