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Logic puzzles articles

Rules and beginner strategies for grid logic puzzles such as Hitori, binary puzzles, Nonogram and Mine Finder.

Last updated: October 18, 2026

Hitori Rules: How to Play (With a Printable Example)

The three Hitori rules, checked on a real solved grid, the usual mistakes and how the four levels differ.

Last updated: October 18, 2026

Three counting strategies for Mine Finder, each shown on a real Medium grid, with the squares in the order a solver finds them.

Last updated: October 18, 2026

A first nonogram lesson for children with a solved heart, why silhouettes are easier to read, and how to build a children's book.

Last updated: October 18, 2026

Six free 5 x 5 Futoshiki grids to print, with a first move for each and a PDF with the solutions on its last page.