Smart Sudoku
Can you solve this fun and challenging sudoku puzzle? Choose your level: normal, hard, or expert. Look carefully at the numbers entered in the grid. Each row, column, and block of 9 squares may only contain the numbers 1-9 once. Can you figure out which numbers belong in the remaining empty cells? Use the pencil icon to take notes if you need to. Have fun playing the famous number puzzle game sudoku for free online
