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Brain Trainer
by William Armstrong
02 Oct 2011
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Brain Functions


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Full Circuit Puzzle

Genre: Logic Rating: 6 - Medium to Hard Source: Dudeney, Canterbury Puzzle 59
Brain Functions: Analysis / Visualization Hint    Solution

Put the point of your pencil at the "0" in the upper left corner of the checkerboard. From this starting point draw through the center of all 64 squares using one continuous line of 21 straight strokes. You can draw horizontally or vertically but never diagonally or obliquely. You must never touch any square twice and never exit the checkerboard.

Furthermore, you must end your tenth stroke at the square marked "10" and end your last stroke at the square marked "21."

Full Circuit Puzzle

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