Cronus Hall of Fame

The people training Cronus.

Every safe prompt is a training signal. This page celebrates the trainers and challenges that made Cronus struggle, improve, or learn something useful.

Submit a Hall of Fame challengeWatch Cronus train live
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Top public trainerGravyTrain

Impact score 194, best challenge 43/100.

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Hardest challengeAsync edge-case challenge

58/100 difficulty by ZedTester.

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First learned-later signalTest safe challenge

Cronus practiced this with sandbox tools: assert_python_output -> assert_python_output -> assert_python_output. The result is now part of the public challenge record and can be promoted into training if useful.

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First public trainerAnonymous Trainer

Test safe challenge

Why this matters

The Hall of Fame turns user prompts into a game. The best prompts are not just hard, they reveal what Cronus should practice next.

Hard prompts expose weak spots.
Follow-ups create training chains.
Learned-later cards prove the loop is working.

Featured stumper

Debug a Python async queue worker that sometimes hangs. Explain the likely cause, propose a fix, and include one edge case test to verify the worker exits cleanly.

Async edge-case challenge · 58/100 difficulty