Book excerpt: 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 the brain and have fun too. Simply connect pairs of like numbers with a path that uses the same number of squares and shade them in; so two 2’s next to each other can be colored in right away. But rather than using a plain pencil, pick up one of the six colored ones we’ve included and color the path to match the numbers. Suddenly, leaps of logic become artistic leaps, as a multi-hued picture emerges, perfect for showing off your puzzle skills. Each teaser tests your mental mettle with the promise of a visual treat at the end.