Dominosa

from Simon Tatham's Portable Puzzle Collection


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Tile the rectangle with dominoes (1×2 rectangles) so that every possible domino appears exactly once (that is, every possible pair of numbers, including doubles).

Click between two adjacent numbers to place or remove a domino. Right-click to place a line between numbers if you think a domino definitely cannot go there. Dominoes light up red if two identical ones appear on the grid.

Full instructions | Back to main puzzles page


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(last modified on Sun Nov 19 01:44:15 2017)