books.google.com - Math meets maze inside Pocket Posh Mazematics. Mazesters must compute calculations as they navigate their way through the maze (and develop spatial awareness and memory)....https://books.google.com/books/about/Pocket_Posh_Mazematics.html?id=eDPJBqBzRWoC&utm_source=gb-gplus-sharePocket Posh Mazematics
I have not quite figured these out yet but they are quite challenging. Have only completed the first couple.Read full review
About the author (2011)
The Puzzle Society(tm) is the Web's premier source for challenging, professionally constructed puzzles and games. Updated daily and boasting a gaming archive of more than 8,000 puzzles, The Puzzle Society(tm) offers more than 70 nationally syndicated puzzles, including the Washington Post Crossword, Los Angeles Times Crossword, Universal Crossword, Universal Jigsaw, and Daily Jumble.