What Is a Mechanical Puzzle? Parts, Kinds and Why They Get Hard
A mechanical puzzle is an object you solve by moving or fitting its parts. Its parts, kinds, rules and why half of a sliding tray's positions are unreachable.
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Articles about mechanical puzzles
Types of Mechanical Puzzles: Slide, Jump, Pack, Cut, Match, Twist
The six types of mechanical puzzles, sorted by what your hands do: slide, jump, pack, cut and rearrange, colour-match and twist, with how to start each.
Sliding Block Puzzles: Clear the Blocker Chain, Free the Target
Work back from the target: trace the blocker chain, count free cells, move small pieces first. A worked tray, a parking-style grid and a practice puzzle.