Download or read book Number Crunching Sudoku written by J. Liber and published by Puzzlewright. This book was released on 2016-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: These 99 number-crunching puzzles are sudoku PLUS! Just like the familiar sudoku that solvers love, the grids go from 1 to 9, and each number appears only once in each row, column, and box. The twist is, you need to do a little arithmetic, too--multiplying, dividing, adding, and subtracting according to the signs in the grid. It's a fresh, challenging, and mathy take on the super-popular puzzles.