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(chess)The checkmate which occurs shortly after the opening, when the white queen checkmates by taking the black pawn on f7 (or the black queen taking the white pawn on f2), protected by a bishop on c4 (or c5).
Translations
checkmate which occurs after the moves 1.e4 e5 2.Qh5 Nc6 3.Bc4 Nf6 4.Qxf7#