Sudoku No. 1 is a free Hard puzzle from Specialty Digest Games. Fill the grid so every row, column and box holds each digit from 1 to 9 exactly once. This puzzle has one solution and can be solved by logic alone. Its key technique is X-Wing, and when you finish, a short note explains the technique and shows exactly where it appears in your grid. New Sudoku puzzles are published every Monday, Wednesday, Saturday and Sunday.
Logic Game