Henry Ernest Dudeney/Puzzles and Curious Problems/305 - Domino Frames

by : $305$

 * Domino Frames
 * Take an ordinary set of $28$ dominoes and return double $3$, double $4$, double $5$, and double $6$ to the box as not wanted.
 * Now, with the remainder form three square frames, in the manner shown, so that the pips in every side shall add up alike.


 * Dudeney-Puzzles-and-Curious-Problems-305.png


 * In the example given the sides sum to $15$.


 * If this were to stand, the sides of the other two frames must also sum to $15$.
 * But you can take any number you like, and it will be seen that it is not required to place $6$ against $6$, $5$ against $5$, and so on, as in play.