From the legendary New York Times crosswords editor, Will Shortz Presents Math Masters Sudoku: 150 Puzzles for Clever Kids introduces the popular number game to children in this volume with beginning, yet challenging puzzles. Starting with a sudoku lesson from Shortz, kids 8 and up will try their hand at solving 4x4 grids, work their way through 6x6 grids, and graduate to figuring out the traditional 9x9 grids. This puzzle primer is a perfect way for your children to have fun developing their mathematical and problem-solving skills.