Free Preview of 400 Futoshiki Sudoku and Hitori Puzzles. Hard - Very Hard Levels.: 19x19 + 20x20 Hitori Puzzles and 9x9 Futoshiki Hard - Very Hard Levels. Holmes Presents a Collection of Strong Classic Sudoku. (Plus 500 Puzzles That Can Be Printed)
400 Futoshiki Sudoku and Hitori Puzzles. Hard - Very Hard Levels.: 19x19 + 20x20 Hitori Puzzles and 9x9 Futoshiki Hard - Very Hard Levels. Holmes Presents a Collection of Strong Classic Sudoku. (Plus 500 Puzzles That Can Be Printed)