Sudoku designers the world over will weep and gnash their teeth at the revelations in this comprehensive Guide to cracking the addictive puzzles--but solvers will find it absolutely invaluable as they seek to improve their skills.
A special addition is a reprint of the very first sudoku ever published ".
There are Hundreds of sudoku to practice on.
Even experts don\'t know all these tricks: hidden pairs, naked pairs, X-wings, jellyfish, squirmbag, bivalue and bilocation graphs, and chains, Plus the exclusive Gordonian logic methods that turn the toughest Puzzles into a breeze.
Sudoku designers the world over will weep and gnash their teeth at the revelations in this comprehensive Guide to cracking the addictive puzzles--but solvers will find it absolutely invaluable as they seek to improve their skills
