<div class="user_solution"><b style="line-height: 16px;">1.Ra3! </b> - 2.Rd3  ~ <u style="line-height: 16px;">3.Rd5#</u>.<div style="line-height: 16px;">1...d5 2.Rd4 Kf6 <u>3.Rxd5#</u>,thematic variation,</div>1...dxc5 2.Rxc5+ Kxf4 3.Se2#.<div><div><b><u>Rybinsk theme</u></b>:In virtual threat (of a three-,or a more-mover) and solution the mates on same square but with different units.</div><div>Note: The virtual threat has to be full-length. (Proposed  by A.Melnichuk in 2007.)</div></div><div style="line-height: 16px;"><br /></div><br /></div><br />