PPT Slide

0000

1000

0100

0010

0001

1100

1010

0110

1001

0011

0101

1111

1110

1101

1011

0111

If TailWagger chooses a point that violates a rule, it backtracks

and tries one of the other points.

0010 would have to link with 0000

but the snake is still too small.

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Notes:

If TailWagger were to choose the red point, it would be within one length of the first point on the snake, and would either have to close the snake with a length of 4 or choose one of the other blue points.