The Famous 15 Puzzle

Scramble the blocks, then slide them into numerical order...if you can! Read the fascinating history of this perplexing puzzle, then use the problems in the book to try your hand at the addictive game. But be warned: once you pick up The Famous 15 Puzzle you may never put it down! One of the most popular puzzles of all time, the 15 Puzzle was released in 1880 with the instructions, "Place the blocks in the box irregularly, then move until in regular order." The solution sounded simple-but was it always possible? This entertaining enigma confounded millions and set off an unprecedented craze that was unrivaled until Rubik's Cube mania a century later.