[Event "Open file lesson: Doubling 2"] [Date "2024.11.26"] [Result "*"] [Variant "Standard"] [ECO "?"] [Opening "?"] [StudyName "Open file lesson"] [ChapterName "Doubling 2"] [ChapterURL "https://lichess.org/study/2MRSHb3X/h05SauDa"] [Annotator "https://lichess.org/@/C0achV"] [FEN "r2r2k1/pp3pp1/2p1p2p/8/P2R4/1P2P2P/2P2PP1/R5K1 w - - 0 1"] [SetUp "1"] [UTCDate "2024.11.26"] [UTCTime "09:12:50"] [Orientation "white"] { White's and black's rooks are staring at each other on the d-file. } 1. Rad1! { but white gets a chance to double his rooks first! } 1... Rxd4 2. Rxd4 { and now white can infiltrate with Rd7! } { [%csl Gb7,Gf7][%cal Gd4d7,Gd7b7,Gd7f7] } *