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Riddle Of The Tiled Hearth

Answer :

The correct answer is shown in the illustration.
No tile is in line (either horizontally, vertically, or diagonally) with another tile of the same design, and only three plain tiles are used. If after placing the four lions you fall into the error of placing four other tiles of another pattern, instead of only three, you will be left with four places that must be occupied by plain tiles. 

The secret consists in placing four of one kind and only three of each of the others.




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