Retroalimentacion actividad 2 sesion 3 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "blancas"] [Black "negras"] [Result "*"] [SetUp "1"] [FEN "R7/P4k2/8/8/8/8/r7/2K5 w - - 0 1"] [PlyCount "5"] [EventDate "2014.12.05"] [SourceDate "2014.12.05"] 1. Rh8 Rxa7 2. Rh7+ Kg6 3. Rxa7 * your web browser and/or your host do not support iframes as required to display the chessboard; alternatively your wordpress theme might suppress the html iframe tag from articles or excerpts