[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" . } *