Question 8
In each hexagonal grid, a number tells how many cells sharing an edge with it are shaded. The first picture is an example. Shade only unnumbered cells in the second grid. What is the minimum number of shaded cells needed? Enter the number only.
Clarification: the original asks for the number of shaded cells without saying “minimum”. Its top-right cell touches no numbered cell, so the rules alone permit an unnecessary extra shaded cell. This edition asks for the minimum, matching the source’s construction.
Clarification: the original asks for the number of shaded cells without saying “minimum”. Its top-right cell touches no numbered cell, so the rules alone permit an unnecessary extra shaded cell. This edition asks for the minimum, matching the source’s construction.