Observed arrival · 2026-11-01

Polvo: a chess engine with an octopus’s many minds

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Editorial interest 78/100 Selection signal · not a rating of the site

A development diary for Polvo, a UCI chess engine derived from the long-running Supra project and co-created by its author and Claude.

Landing page captured for the 2026-11-01 issue.

For: Chess-engine developers and chess-programming enthusiasts
Worth noticing: The diary tracks versions 0.1–0.5 across three days, including Chess960 perft checks and self-reported match results.

Field notes

The diary gives a compact development sequence: version 0.1 added a bitboard board and move generator checked with perft for standard chess and Chess960; later entries add search, evaluation, hash-table and move-ordering methods, then multiprocessing. It reports a 75% result against Supra 29.5 in 10 games and Elo gains between versions; these are project-reported tests, not independently verified results.

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✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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