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My grandfather got this puzzle in the 1970's.

JohnDBarrow
in Brain Teasers and Puzzles

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It was from my mother to him as a Christmas present. It had plastic pieces on a peg board with a hard plastic clear case.

Here is that puzzle for you to solve in digital form. Moreover, how many possible solutions are there to this puzzle? 

 

 

square matrix puzzle.jpg

Edited by JohnDBarrow

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