Question 6
A grid is divided into regions; their shapes may be the same or different. Shade cells according to both rules:
- Every region contains exactly two shaded cells, which may or may not be adjacent.
- Every shaded cell shares a side with exactly one other shaded cell; its partner may be in the same region or a different region.
The original $5\times5$ example has six regions; its completed solution is shown at right.
A. $6\times6$, eight regions. (1 point)
B. $8\times8$, twelve regions. (2 points)
C. $10\times10$, twenty-one regions. (3 points)
- Every region contains exactly two shaded cells, which may or may not be adjacent.
- Every shaded cell shares a side with exactly one other shaded cell; its partner may be in the same region or a different region.
The original $5\times5$ example has six regions; its completed solution is shown at right.
A. $6\times6$, eight regions. (1 point)
B. $8\times8$, twelve regions. (2 points)
C. $10\times10$, twenty-one regions. (3 points)