Ripple Effect
"Ripple Effect" is an original Nikoli puzzle. The job is to fill in numbers in blank cells by the rules. Keep checking what may go and filling in, cell by cell.Rules
1. The areas surrounded by bold lines are called "Rooms," and you fill in all the empty
cells in a Room under the following rules.
2. A Room has all the numbers up to the number of cells in the Room.
3. If a number appears more than once in a row or column,
there must be at least the number of cells equal to the number between these numbers.