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Unquoted colon in 'calibrated confidence: will say' broke strict YAML parsing. CC's parser is lenient but fix for robustness.
math-olympiad
Competition math solver with adversarial verification.
The problem
Self-verification gets fooled. A verifier that sees the reasoning is biased toward agreement. arXiv:2503.21934 ("Proof or Bluff") showed 85.7% self-verified IMO success drops to <5% under human grading.
The approach
- Context-isolated verification: verifier sees only the clean proof, never the reasoning trace
- Pattern-armed adversarial checks: not "is this correct?" but "does this accidentally prove RH?" / "extract the general lemma, find a 2×2 counterexample"
- Calibrated abstention: says "no confident solution" rather than bluff
- Presentation pass: produces clean LaTeX/PDF after verification passes
Validation
17/18 IMO+Putnam 2025 problems solved, 0 false positives, 2 novel proofs found. See the skill's eval data in the anthropic monorepo.
Install
/plugin install math-olympiad@claude-plugins-official
Use
> Solve this IMO problem: [statement]
The skill auto-triggers on "IMO", "Putnam", "olympiad", "verify this proof", etc.