This book has 100 Hard Sudoku 16 X 16 Puzzles. Challenge yourself today with Sudoku Hard Level Puzzles! Each row, column and 4 x 4 box must contain one of the characters 1 to 9 or A to G. This is the first volume of 2019 16 X 16 Hard Sudoku Puzzle Books For Adults. Answers are also included.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.