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July 12, 2026Judging

Test fixes and multiple-answer grading

Hundreds of practice problems had faulty test cases removed or corrected.

An AlgoArena builder workspace representing platform and judging improvements. — July 12, 2026: Test fixes and multiple-answer grading.

What changed

Hundreds of practice problems had faulty test cases removed or corrected.
Thousands of problems that allow several correct outputs now accept more than one valid answer.

Related

Read the validation sweep Open Changelog

NewerEducator Copilot and Student Copilot Older Assessment sessions that keep saving

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