It was reportedly Bogart's idea that Rick Blaine be portrayed as a chess player, which served as a metaphor for the sparring relationship of the characters played by Bogart and Rains.
Bogart kalapurang pinaka sang sané madué pikayunan yéning Rick Blaine puniki musti kagambarang dados sang sané prasida maplalianan catur, wantah basita paribasa pinaka pasawitran sané kalanggén gang antuk sawitran saking mesehnyané taler prakantinnyané.