Henry Ernest Dudeney/Puzzles and Curious Problems/308 - Domino Hollow Squares/Solution

by : $308$

 * Domino Hollow Squares

Solution

 * Dudeney-Puzzles-and-Curious-Problems-308-solution-1.png $\quad$ Dudeney-Puzzles-and-Curious-Problems-308-solution-2.png


 * Dudeney-Puzzles-and-Curious-Problems-308-solution-3.png $\quad$ Dudeney-Puzzles-and-Curious-Problems-308-solution-4.png


 * Dudeney-Puzzles-and-Curious-Problems-308-solution-5.png $\quad$ Dudeney-Puzzles-and-Curious-Problems-308-solution-6.png


 * Dudeney-Puzzles-and-Curious-Problems-308-solution-7.png


 * Remember this rule:
 * ''If the pips on your dominoes sum, say, to $7$ (as in the first example),
 * and you wish the sides to add up to $3$, then $4 \times 3 - 7$ gives us $5$ as the sum of the four corners.