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Figure out the meaning of several drawings on the wall of a temple.

Discover the rules of each glyph in this instructionless puzzle challenge with serpentine tunnels.

Infer the rules behind a series of grid-based puzzles based on the unicity of each solution.

A wordless puzzle hunt based on colored cells in a spreadsheet.

Identify the underlying line-drawing rules in a collection of domino arrangements.

Infer a consistent set of rules that yield a unique solution to each line-drawing puzzle.

Find words within arrangements of old letter-stamped coins.

An early collection of logic puzzles where pinning down the rules is part of the challenge.