Dell Sudoku Super Challenger
Ready for a challenge? Give your brain a fun workout with 53 truly tough Sudoku problems – if you dare!
Match wits with some of the most difficult Sudoku puzzles ever created! Each row, column, and diagonal must contain the numbers 1 to 16 – and no number may appear more than once! The 53 super-sized puzzles in each volume feature 16 x 16 grids, most to be filled with numbers, but some with the letters A through P, following the same solving directions. Ready, set, go!