(Paperback)

With more than two hundred puzzles, Sangaku #2 will keep you and your friends amused for hours, sharpen your maths skills, and change the way you think about numbers.It's the perfect time-killer for puzzle lovers of every age and skill level.

(Paperback)

Works a bit like Sudoku: the player is presented with a pattern or grid, and must put the correct numbers in the right spaces in order to complete the puzzle based on mathematical rules. This book is the captivating new number game that uses simple math and logic to reveal the mystic power of numbers.