Five minutes later, however, he exclaimed, "Hang it all! I can't help getting the 2 in a corner. May the florin be moved from its present position?"
"Certainly not."
"Then I give it up."
But Grigsby and I decided that we would work at it another time, so the Professor showed Hawkhurst the solution privately, and then went on with his chat.
[68].—The Postage Stamps Puzzles.
"Now, instead of coins we'll substitute postage-stamps. Take ten current English stamps, nine of them being all of different values, and the tenth a duplicate. Stick two of them in one division and one in each of the others, so that the square shall this time add up ninepence in the eight directions as before."
"Here you are!" cried Grigsby, after he had been scribbling for a few minutes on the back of an envelope.
The Professor smiled indulgently.
"Are you sure that there is a current English postage-stamp of the value of threepence-halfpenny?"