<div class='user_solution'><div>For ChessStar - 10 AT<br /></div><div><br /></div><div>1.Nf6+?  Kg6  2.Ne4+  Kh7  3.Nf7, but 1...Kxh6!</div><div><br /></div><div>1.Rc7+!  Kh8  2.Nf7+  Kh7  3.Ne5+ (echo battery play)  3...Kh8</div><div>4.Rc6 (switchback and zugzwang)  4...Kh7  5.Nf6+ (main plan</div><div> works now with Nh6 transferred to e5)  5...Kh6  6.Ne4+  Kh7</div><div>7.Nf7  Qg6(Qh4)  8.N4g5+  Qxg5  9.Nxg5+  Kh8  10.Rh6#</div><div><br /></div><div>4...Qh1  5.Nf7+  Kh7  6.Ng5+  Kh8  7.Nh6  Qd5(Qh5)  8.Nhf7+</div><div>Qxf7  9.Nxf7+  Kh7  10.Rh6#<br /></div><br /></div>