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Learn About the Game Twelve
Tiles appear on a grid. Each tile shows a number. The goal lies in building a tile labeled twelve.
Pick one tile. Pick a second tile. The two merge into the next number. A tile showing one plus another showing one becomes two. Two and two join into three. You merge pairs. Two eleven tiles meet. That move creates a tile labeled twelve.
A sliding puzzle used the same merge idea. It reached a tile labeled thirty two. Many players know that design. This challenge ends at twelve.