![]() ![]() ![]() ![]() While solving the sudoku puzzle you can only use each number one time in the square, column, and row. Continue using logic and deduction until you have filled in all of the empty squares. The objective of Sudoku is to fill a 9x9 grid made of squares (shown above circled in blue) so that each row, each column, and each full 9x9 square use the numbers 1-9. Every Sudoku has one solution, so double check by making sure each column, row and square contains the numbers 1-9 with no duplicates or omissions. Next, you can start scanning each row for a certain number, like 1, to see where it should go. Then look for single empty squares in each row and column that you can fill in. If you see a single empty space in a larger square, fill that in first. For example, if a square already has 7 out of the 9 spaces filled in, you can figure out which 2 numbers are missing and use the numbers in the correlating rows and columns to determine which of the two missing numbers belongs in each space. Some squares already have numbers filled in, so begin by look for missing numbers in a row, column or square. To complete the grid, every column, row and square (each containing 9 spaces) needs to be filled in with the numbers 1-9 without repeating any numbers within the row, column or square. For trickier puzzles, click Options to turn on pencil marks. After entering a number, check to see where else it has to go. Try adding numbers which already appear often in the Sudoku puzzle. The grid is divided into 9 separate 3 x 3 squares. Look for rows, columns and 3×3 boxes with just a few blanks remaining. Sudoku is a game played on a 9 x 9 grid where the object of the game is to fill every space with the correct number. ![]()
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