Naoki Inaba has invented over 400 new types of puzzle, and also writes sudoku and other popular puzzles for magazines in Japan. He lives in Japan.
"The 100 maze puzzles use nothing more than the area of a rectangle in their solutions and are broken into five levels of difficulty, making them useful for working with a diverse group of students with different mathematical backgrounds."--The National Council of Teachers of Mathematics
"The only math you'll need to know is that length times width equals area."--FiveThirtyEight "Addictive."--BoingBoing