ABSTRACT

The rules of the race were that the owner of the camel that crosses the finish line last wins the fortune. The wise man simply told them to switch camels.

4. WOLVES AND SHEEP You must place 5 wolves and 3 sheep on the board below, so that none of the wolves can get the sheep. Wolves can move horizontally, vertically or diagonally up to five squares at a time, like the queen on a chessboard. Wolves and sheep cannot be placed on the same squares and each one must be placed on of the 25 squares. (This is not a lateral thinking problem, but a combinatorial problem.)

 Trainer’s Guide A26.2

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This puzzle seems easy to begin with. Then it soon seems very difficult, if not impossible. It’s one thing to place 5 wolves and 2 sheep, but 3 sheep?