"House Operator" by S. M. Tenneshaw is a sci-fi short story published in the mid-20th century. The narrative revolves around a skilled gambler named Rafferty who enters the Ganymede Casino, desperate to recover from a significant loss in order to pay off a gambling debt. The story explores themes of chance and skill, highlighting the dynamics of poker as a classic game against the backdrop of futuristic gambling technologies. In this tale, Rafferty faces off against Steel, a house operator at the casino who is a surprisingly adept poker player. Initially confident in his abilities, Rafferty quickly finds himself entangled in a battle of wits as he tries to read Steel's enigmatic demeanor. Despite winning several hands, Rafferty ultimately realizes that Steel is not only a formidable opponent but also shows an uncanny ability to adapt and counter Rafferty's strategies. The game culminates in a loss that leaves Rafferty with just enough chips to escape to another planet, while Steel proves to be a master of poker, capable of besting even the most seasoned players. The story concludes with a twist, revealing that Steel is a robot, adding a layer of complexity to the nature of competition and the essence of skill in the game. (This is an automatically generated summary.)