[Event "L interposition de Spassky"] [Site "https://lichess.org/study/xOVSnWLR/hZdw6tDV"] [Date "????.??.??"] [Result "*"] [Variant "From Position"] [ECO "?"] [Opening "?"] [Annotator "https://lichess.org/@/michel_PR"] [FEN "r4rk1/5pnp/2p1p1p1/1p1p4/3B4/1P4P1/2PPPP1P/R1R3K1 w - - 0 1"] [SetUp "1"] [Source "https://lichess.org/study/xOVSnWLR/hZdw6tDV"] [Orientation "white"] 1. Ba7! { L'interposition } 1... Nf5 2. Ra6! Rfc8 3. Rca1 e5 4. Bc5! { Les Blancs ont le contrôle total de la colonne "a" . } *