Related Clues:

• It's sometimes fuzzy
• Clear thinking
• Sudoku solving skill
• Aristotle subject
• Aristotelian subject
• Sound reasoning
• Holmes specialty
• Poirot's forte
• Spock specialty
• If-then analysis
• Deduction
• If A > B and B > C, then A > C, e.g.
• Reasoned thinking
• Sudoku solver's need
• Need for KenKen