The following instance is so extraordinary, that I should not repeat it if the account were not attested by more than one writer, and also preserved in the public monuments of a considerable town of Upper Saxony; this town is Hamelin in th... Read more of The Pied Piper at Scary Stories.caInformational Site Network Informational
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THE COLOURED COUNTERS.

(Chessboard Problems)
The diagram represents twenty-five coloured counters, Red, Blue, Yellow,
Orange, and Green (indicated by their initials), and there are five of
each colour, numbered 1, 2, 3, 4, and 5. The problem is so to place them
in a square that neither colour nor number shall be found repeated in
any one of the five rows, five columns, and two diagonals. Can you so
rearrange them?


Answer:

The counters may be arranged in this order:--
R1, B2, Y3, O4, GS.
Y4, O5, G1, R2, B3.
G2, R3, B4, Y5, O1.
B5, Y1, O2, G3, R4.
O3, G4, R5, B1, Y2.




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