A fool-proof guide to solving every solvable sliding block puzzle, ever. - Sliding-Block Puzzles - Giant Bomb
How to solve ANY slide puzzle regardless of its size – Kaplof
GitHub - alexyuisingwu/sliding-puzzle-solver: A web app that allows users to create, play, generate and visualize optimal solutions for sliding puzzles with custom images and dimensions.
Solving Sliding Puzzles - How Sliding Puzzles Work | HowStuffWorks