Paint by Numbers
Offers two color puzzles available to print out or solve online.
Nonogram Solver
Information about Nonogram logic puzzles and how to solve them, plus examples of two on-line solvers, software, and links.
Conceptis Puzzles
Creator and supplier of picture-forming logic puzzles. Contains online games and those for sale from Japan.
Solving Paint-by-Numbers Puzzles with Integer Programming
Article and instructions on solving puzzles.
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