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A Puzzle with Dominoes

A puzzle where you collect matching dominoes.

Each problem to solve is a pattern of dominoes for you to start from. The goal is to collect all the dominoes by sliding matching numbers next to each other.

Beginner problem

To try the puzzle, get a set of dominoes. Then either read the rules, or download the PDF. Choose the PDF if you want to print out pretty diagrams of the problems, like these:

Example problem and solution

On the rules web page, the beginner problem above looks like this:

0|5 0 1
    - -
4|6 4 5

4|2 4|1

The example problem and solution look like this:

5 2|4   5 2|4     5 2|4   5 2*4
-       -         -       *
2 2|6   2   2>6   2 2<6   2 2*6

Donimoes is an original puzzle designed by Don Kirkby.

Other Domino Puzzles

The only other domino puzzle I could find is called either Dominosa or Domino Solitaire. You start with a grid of numbers, and you have to lay the dominoes on them. It was invented by O.S. Adler in 1874. There’s an interesting proof that this puzzle is NP-hard.

Reiner Knizia published some puzzles called Domino Knobelspass that are very similar to Dominosa.