<div class="user_solution"><div>1.Sf5+? Bxf5! 2.?</div><div>1.Se2+? Bxe2! 2.?</div><div><b>1.Rh3! </b>(2.Qe3#),</div><div>1...Sfe5 2.Sf5+! (2.Se2+?) Bxf5 3.Se2#,2...Rxf5 3.Se6#,</div><div>1...Sde5 2.Se2+! (2.Sf5+?) Bxe2 3.Sf5#,2...Qxe2 3.Bc5#.</div><div>Petko-2 theme;Keller-1 Paradox.</div><div>(1...Re8 2.Rxd3+,1...Be6 2.Qf6+,1...c2 2.Bb2+)</div><div style="line-height: 16px;"><br /></div><br /></div>