Problems from The 15 Puzzle by Jerry Slocum

Variations of the Fifteen Puzzle, originally produced popularized as The GEM Puzzle by Matthias J. Rice, 1879

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Click on a puzzle image to play.

(Original Java applet requires the CheerpJ Applet Runner Chrome extension to run in Javascript)

Problem 1 (pg 32) 39 moves	Problem 2 (pg 37) LEX 71 moves	Problem 3 (pg 38) MAME & J.D. Warner 44 moves	Problem 4 (pg 39) D 65 moves	Problem 5 (pg 56) Harper's Weekly 72 moves
Problem 6 (pg 56) Harper's Weekly 70 moves	Problem 7 (pg 56) Harper's Weekly 28 moves	Problem 8 (pg 57) Donald Knuth 56 moves	Problem 9 (pg 57) Donald Knuth 37 moves	Problem 12 (pg 57) Slocum & Sonneveld 80 moves