Sudoku Strategy: Using number sets to solve difficult puzzles mentally

ISBN-13: 9781523353026 / Angielski / Miękka / 2016 / 140 str.

Gino Cox

Opis

Tools to solve difficult Sudoku puzzles mentally without pen & paper. Most Sudoku strategies rely upon deductive reasoning which requires keeping track of a large number of possible solutions for each open cell. These strategies enable even inexperienced players to solve difficult puzzles using only a few numbers (usually two, three or four) at a time. It includes step-by-step solutions to several puzzles.