Present participle; Past participle - checkmating - checkmated Present - checkmate - checkmate - checkmates - checkmate - checkmate - checkmate Past - checkmated - checkmated - checkmated - checkmated - checkmated - checkmated Future - will checkmate - will checkmate - will checkmate - will checkmate - will checkmate - will checkmate Present conditional - would checkmate - would checkmate - would checkmate - would checkmate - would checkmate - would checkmate Present Perfect - have checkmated - have checkmated - has checkmated - have checkmated - have checkmated - have checkmated Past Perfect - had checkmated - had checkmated - had checkmated - had checkmated - had checkmated - had checkmated Future Perfect - will have checkmated - will have checkmated - will have checkmated - will have checkmated - will have checkmated - will have checkmated Past conditional - would have checkmated - would have checkmated - would have checkmated - would have checkmated - would have checkmated - would have checkmated Imperative - - - checkmate - - - - - - - -