Domino Puzzle
Many centuries ago the ancient Arabs invented the game of the 28 Dominoes. I propose today this contiguous conditions puzzle. You could play on the 8x7 rectangle. You could use ancient tiles or Windows Paint. Below there are the rules.
The puzzle has solutions. I checked it. I ask you to find the solution which has the smallest perimeter, defined as the sum of peripheral heads.
Send your solution here.
_________________________
July 2001  Alessandro Fogliati surprises me with this solution:
Perimeter = 10
We have demonstrated by the Gerard's Polyomino Solution Engine that the 5 solutions below are the only possible solutions without headhead conjunctions.
_________________________
New challenge
Cover this chessboard by the 28 Domino pieces, with these new rules (no joker!).
It isn't trivial.
1st edition: Apr 16yh, 2000  Last revision: Aug 14th, 2001

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