“Knight After Knight”
Flowers is hired to kill Checkmate's chief scientist and all forces converge on the battle. The Bishop traitor is revealed.
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Checkmate #25 (1988) is issue #25 of DC's Checkmate (1988–1991), with a cover date of February 1990. Written by Paul Kupperberg and drawn by Steve Erwin.
Credits, characters and story details from the Grand Comics Database, CC BY-SA 4.0.