<div class='user_solution'><font size="3"><b>1.Bc2! </b>~ 2.Qc3+ K~ 3.S~# <br />1...Kxc4 2.Qb4+ Kd5 3.Bb3# (Switchback)<br />1...Ke4 2.Sc5+! <br />     2...Kf3 3.Qf2# <br />     2...Ke5 3.Sd7# (Siers battery)<br />1...Sxg3 2.Qf2+ <br />     2...Kxc4 3.Qc5# <br />     2...Ke4 3.Qf4#</font><div><font size="3"><br /><br />Flight giving key, double battery with single front piece, changed battery functions (direct/indirect), Meredith.</font></div><br /></div>