This is a book of difficult Sudoku puzzles.Some of the puzzles require you to applyadvanced Sudoku solving techniques suchas X-Wing or Swordfish.However, all puzzles can be solved withoutguessing and have one solution only. If you need help, you can always peek at the solutions.Remember: do not guess!The book is small in size but the numbers areprinted in large font, easy to read._______________________________________hard sudoku, hard su doku, hard...
Related Subjects
Games