Henry Ernest Dudeney/Puzzles and Curious Problems/252 - Black and White/Solution

by : $252$

 * Black and White

Solution

 * $(1): \quad$ In the first case, move:
 * $6 7$ before the $1$, then $3 4$, $7 1$, $4 8$ to the vacant spaces, leaving the order:
 * $6 \ 4 \ 8 \ 2 \ 7 \ 1 \ 5 \ 3$


 * $(2): \quad$ In the second case, move:
 * $3 4$ and replace them as $4 3$ before the $1$, then move and reverse $6 7$, $6 5$, $3 1$, $6 8$ into the vacant spaces, leaving the order:
 * $4 \ 8 \ 6 \ 2 \ 7 \ 1 \ 3 \ 5$