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Easy Tips & Guides- Method 3
To the right is an example of a partial Sudoku puzzle. Using only the given information, there is a way for you to locate the position of a "1" on the grid. Can you figure it out? Move your mouse over the puzzle to reveal the answer. The correct position will be highlighted in green.
Sudoku Puzzle

Step-by-Step Explanation:

1. Look at where the first two "1"s are located. You can't place a "1" in the first row because there is already a "1" in that row. In addition, you can't place a "1" in the second row for the same reason. The first two rows are darkened because a "1" can't go in either row.
Sudoku Puzzle
2. Look at where the last two "1"s are located. You can't place a "1" in the first column because there is already a "1" in that column. In addition, you can't place a "1" in the second column for the same reason. Those two columns are darkened because a "1" can't go in either column.
Sudoku Puzzle
3. Look at the 3x3 block in the upper left corner. A "1" has to go somewhere in this box because of the rules. The "1" can't go in any of the darkened areas. This only leaves the square that is highlighted green. Sudoku Puzzle
Copyright © 2006, Neil Pomerleau. All Rights Reserved.