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.

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Step-by-Step Explanation:

1. Look at where the first "1" is located. You can't place a "1" in that row because there is already a "1" in that row. The first row is darkened because a "1" can't go in that row.
2. Look at where the second "1" is located. You can't place a "1" in that column because there is already a "1" in that column. That column is darkened because a "1" can't go in that column.
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, and it obviously can't go in the boxes where the "2," "3" and "4" are. This only leaves the square that is highlighted green.