In what may be among the most innovative twists on sudoku ever seen, the creative geniuses at Conceptis have literally turned solving puzzles into an art form!

Paint-doku, also known as pixel puzzles, are optical mind bogglers created to engage and perplex logical thinkers.

Conceptis has done it again--proving it still rules as the world’s leading developer of picture-logic puzzles. Link-Up Paint-doku offers a new way to train th

Picture-perfect logic puzzles . . . in vibrant two-color Now, when you're cracking a code to solve a conundrum, you're also creating art. Simply use the numbers

Here it is: the next big puzzle sensation, destined to join sudoku and kakuro as a bestselling blockbuster. Yubotu is the Japanese word for "U-Boat" or submarin