Thank you very much for your immediate replies. There was unfortunately no diagram. The exact context was: `If you could see inside his brain, as his enemies no doubt hoped to, you would find it primed to attack and defend in every way possible, with a straight-moving rook or a sidling bishop, or with both in his favourite Ruy Lopez opening, or with the queen swallowing an early pawn in the "poisoned" version of the Sicilian, or a thousand others.` Thatīs everything concerning the game. I really thought it was a term used in chess since I also found that combination very often on Wikipedia describing chess rules etc...
But itīs a little bit strange in that context, isnīt it?
Than you very much for your help!