Beyond Sudoku Author:Philip Riley, Laura Taalman Ready to take your sudoku skills to the next level? Beyond Sudoku features more than 150 ingenious puzzles with extra regions indicated by colored squares or colored dotted lines. The play of patterns and colors makes each grid a unique work of art, and there's only one new rule: no numbers may repeat in the extra regions. But that simple rule t... more »akes you Beyond Sudoku to a new world of challenges and fun!« less