This book contains 100 difficult CalcuDoku puzzles. CalcuDokus, introduced in 2004 as KenKen(R) (a registered trademark of Nextoy LLC), is a 9x9 numeric puzzle similar to Sudoku. But, unlike Sudoku, CalcuDoku doesn't require you to learn complex strategies.
- ISBN10 1291165657
- ISBN13 9781291165654
- Publish Date 9 November 2012
- Publish Status Active
- Publish Country GB
- Imprint Lulu.com
- Format Paperback
- Pages 106
- Language English