06 · fairness debugging
The home side that won before anyone played.
An identical-agent control exposed a giant seat split in OverGrid’s old arena—and taught us to stop treating a leaderboard as an answer.
OverGrid / AI Field Notes
Two ways to read the board.
Choose a behind-the-scenes account of the game AI, or a player-facing strategy story drawn from the same concrete problems.
4 notes for Reproducibility.
Behind the AI
For game makers: engineering, evaluation, tooling, and failed experiments.
Open →
07 · fairness reset
When the arena lies, do not add more games
OverGrid archived a large AI dataset after two fairness confounds made its rankings untrustworthy.
08 · reproducibility
Autoresearch needs a contract, not just a hillclimb
The rules OverGrid adopted after a plausible AI lead vanished under more seeds, replies, and horizon.
12 · game records
We did not want a replay button. We wanted a game record.
Why OverGrid introduced OGN beside verified replays—and what each format is designed to make possible.