Griddlers Logic Puzzles Advanced Vol. 9

A uniqe collection of Advanced Black and White Griddlers Puzzles. The puzzles were finely selected from griddlers.net stock and features extended solution time. In order to solve the big puzzles you will have to use some advanced solution tecniques – brought to you at the beginning of the book. This book is perfect for all brain teasers lovers and consists hours of logic and fun.