A sliding puzzle of infinite solutions. Easy to start, but hard to stop.
Designer: Sid Sackson
Publisher: Dover Publications, dtv (Deutscher Taschenbuch Verlag), Hugendubel Verlag, Hutchinson, Random House, Inc., RBA Libros S.A.
Change Change was published in A Gamut of Games.
In this solitaire game, the player takes eleven coins: four from each of two different denominations, two from a third denomination, and one unique. They are arranged randomly in a 3x4 layout, with an empty space in the bottom-right.
The player aims to transform the layout into one that is symmetrical around the horizontal axis by sliding the coins (like a slide puzzle), counting each slide as a 'move'. The usual target is to complete 7 rounds in less than 100 moves.