by Conceptis Puzzles (Author)

Looking for something challenging but not impossible, something to bump up your kakuro technique? These medium-hard "green" puzzles are just right for honing intermediate skills.

Author Biography

Conceptis Ltd. is the leading number-logic and picture-logic puzzle supplier to magazine, newspaper, book, mobile, game console, and board game providers all over the world. Every day, over 10 million pages with Conceptis puzzles are printed in 40 countries worldwide.