## THE HAT PUZZLE.

(

Moving Counter Problem)

Ten hats were hung on pegs as shown in the illustration--five silk hats

and five felt "bowlers," alternately silk and felt. The two pegs at the

end of the row were empty.

The puzzle is to remove two contiguous hats to the vacant pegs, then two

other adjoining hats to the pegs now unoccupied, and so on until five

pairs have been moved and the hats again hang in an unbroken row, but

with all the silk ones together and all the felt hats together.

Remember, the two hats removed must always be contiguous ones, and you

must take one in each hand and place them on their new pegs without

reversing their relative position. You are not allowed to cross your

hands, nor to hang up one at a time.

Can you solve this old puzzle, which I give as introductory to the next?

Try it with counters of two colours or with coins, and remember that the

two empty pegs must be left at one end of the row.

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BOYS AND GIRLS.
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TORPEDO PRACTICE.