retroalimentacion ejercicio 1 sesion 3 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "blancas"] [Black "negras"] [Result "*"] [SetUp "1"] [FEN "8/5P1k/5K2/8/8/8/8/8 w - - 0 1"] [PlyCount "3"] [EventDate "2014.12.05"] [SourceDate "2014.12.05"] 1. f8=R Kh6 2. Rh8# * 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