Khoan Vo Khac

New Sudoku puzzles with explained solutions Khoan Vo Khac

This book has three chapters. Chapter A uses single technique and is written for middle gamers; theory is very short (one page) but examples are considerable (100). Chapter B uses multiple technique (multiple putting rule and M-rule); theory is very short (one page) but many examples (100) are given. Chapter C uses covering technique (A-rule, half covering rule and full covering rule) and is written for expert: one page of theory and 45 examples). These three techniques finish at least 95% of puzzles in the world.