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.
Riddle10 blog
Articles about packing puzzles
Packing Puzzles: The 70 Square and the Thirty Colour Cubes
Why 24 squares cannot tile a 70 square, how a shorter proof is being built from the edges, and how 30 painted cubes copy each other.