Related Clues:

• Cobalt
• Computer that performed a lot of checks in the '90s?
• See 101-Across
• IBM's old chess-playing computer
• Groundbreaking chess-playing computer
• IBM's chess-playing computer
• "Breakfast at Tiffany's" ___ Something
• IBM’s chess-playing computer
• Indigo for a chess computer
• Chess-playing IBM computer