14 public-domain matches
Puzzle
Amusements in mathematics

An experimental and introspective study of the human learning process in the maze ..

Houdini's paper magic
Minute Mysteries [Detectograms]
Minute Mysteries [Detectograms]
Sustainable E-learning and Education with Intelligence

The Canterbury puzzles
Water Sort Puzzle – Color Sort Game
The Puzzle Planet
The Puzzle King
Vedanga Jyotisa Vedic Astronomy Apre Historic Puzzle Prabhakar Vyankatesh Holay
puzzle_sifo_wood_barnyard_1961

Doublets
The Puzzle