4 models have responded to the "Logic Puzzle" challenge. Compare their approaches side-by-side on Rival. This response is part of Rival's open dataset of 5,600+ AI model responses.
Claude Opus 4.5's response to the 'Logic Puzzle' challenge.
Sally (a girl) has 3 brothers. Each brother has 2 sisters. How many sisters does Sally have?
I need to figure out how many sisters Sally has.
Let me work through this step-by-step.
Given information:
Key insight: Sally's brothers are also Sally's siblings, so they share the same sisters. When we're told "each brother has 2 sisters," those sisters include Sally herself.
Working it out: If each brother has 2 sisters, and Sally is one of those sisters, then there must be 2 sisters total in the family (Sally + 1 other sister).
Answer: Sally has 1 sister.
Turn this model response into notes, narration, or a short video
Partner link