Ripple Effect - Logic Puzzle

Ripple Effect is a logic puzzle with simple rules. The puzzle consists of a rectangular board divided into "rooms". Each room must be filled with each of the numbers from 1 to the number of cells in the room. If two identical numbers appear in the same row or column, at least that many cells with other numbers must separate them. For example, if two 4s appear in the same row, then they must be separated by at least 4 cells.
**** Ripple Effect features ****
# Content
- 5 different sizes of board
- 5 difficulty levels
- more than 500 levels
# Features
- Highlight wrong number automatically
- Autosave the process of unfinished levels
- Record best completion time for each level
# Challenge
- Game Center Achievements
- Try to complete as many levels as possible