This is the second issue of DOMINO PUZZLES. Each quarter we will try to publish
one puzzle.
One of the best known types of puzzles uses the double 6 set. This type of puzzle is sometimes called DOMINOSA, a name invented by O.S. Adler, who combined the word DOMINO with his initials.
In the 8 x 7 grid below the double 6 set has been laid out. You miss one
piece of information: the borders between the dominoes. Your task is to draw
these lines.
This puzzle originally appeared in Games & Puzzles 68.
Here is one which I made up during our summer holiday, just to show that dominosa are easy to make:
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