This is the first puzzle of this type that I created for the practice of the Indian Puzzle Team participating in the World Puzzle Championship 2009. This Puzzle type also appeared in the 18th World Puzzle Championship, Antalya (Turkey).
Today's Prime Snake puzzle is very easy. This puzzle can be used to learn the rules of the Prime Snake puzzle type.
Rules of the Prime Snake Puzzle
Fill in every circle inside and outside the grid with one of the given prime numbers. Prime numbers larger than those given are not needed. Locations of all prime numbers inside and outside the grid are given as circles.
Draw a snake of numbers in the diagram that starts with 1, grows in value with every visited adjacent square, and ends at a prime number. The snake goes through all circles inside the grid and does not touch itself, not even diagonally. The numbers outside the grid indicate the number of squares that are occupied by the snake in the corresponding direction.
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| Prime Snake Logic Challenge |
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