# RE6 | anthropic/claude-opus-5 | run 1

## Prompt

Ann, Beth, and Cara finished a race in distinct positions. Ann did not finish first. Beth finished immediately ahead of Ann. Cara did not finish last. Who finished in each position?

## Response

Cara finished first, Beth second, and Ann third.

## Reasoning

Beth must be immediately ahead of Ann, so they occupy consecutive positions: either Beth 1st/Ann 2nd, or Beth 2nd/Ann 3rd.

- **If Beth is 1st and Ann is 2nd**, Cara is forced into 3rd — but Cara did not finish last, so this fails.
- **If Beth is 2nd and Ann is 3rd**, Cara takes 1st. This satisfies every clue: Ann isn't first, Beth is directly ahead of Ann, and Cara isn't last.

## Final Order

| Position | Runner |
|---|---|
| 1st | Cara |
| 2nd | Beth |
| 3rd | Ann |

Note that the clue "Ann did not finish first" is redundant here, since Beth finishing ahead of Ann already guarantees it.

Would you like another logic puzzle with an added fourth runner to make it trickier?
