[Event "Open file lesson: Controlling the entry square 1"] [Date "2024.11.26"] [Result "*"] [Variant "Standard"] [ECO "?"] [Opening "?"] [StudyName "Open file lesson"] [ChapterName "Controlling the entry square 1"] [ChapterURL "https://lichess.org/study/2MRSHb3X/cQ3FPwb8"] [Annotator "https://lichess.org/@/C0achV"] [FEN "r2r2k1/p4p1p/1pn1p1p1/2p5/2P5/1P2P3/PB2KPPP/R2R4 w - - 0 1"] [SetUp "1"] [UTCDate "2024.11.26"] [UTCTime "09:27:17"] [Orientation "white"] { Again, both sides have their rooks on the d-file, but this time around white doesn't have an outpost. In this situation white uses a different technique: } 1. Bf6! { Controlling the entry square! In a vast majority of cases rooks enter open files from squares on the 8th (1st) files. Since that's the case, controlling the opponent's square on the 8th rank usually makes it impossible for him to fight for the file! } 1... Re8 (1... Rxd1 2. Rxd1 { with Rd7 to follow } { [%csl Gd7][%cal Gd1d7] }) 2. Rd7 { [%cal Gd7a7,Gd7f7] } *