Checkmate #1 (April 1988) by DC Comics
Bombs are going off in Chicago...and that's only the start of a terrorist plot to tear America apart! Exploding from the pages of Vigilante and Action Comics comes the ultra-secret organization Checkmate, whose Knights are the country's heroes of last resort! Written by Paul Kupperberg, with art by Steve Erwin and Al Vey. Cover by Kerry Gammill and Karl Kesel.