A daily 4×4 number logic puzzle: tap numbers so all four row totals and all four column totals match their targets. Each selected number counts in both its row and column. One solution, unlimited edits, Undo and Clear. Everyone gets the same daily puzzle, refreshed at midnight UTC. Today's puzzle is free in your browser with no account required; archive access is optional and paid. Built with substantial AI assistance for code and text, with human direction. Puzzles use a deterministic engine, with no runtime generative AI.

Submitted by BillieM on Oct 20, 2026

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