You'll see that the first cell has only one possible number, so fill in a 3.Ĥ.Scan the second column. You'll notice that the third cell has only one possible number, so fill in a 6.ģ.Now scan the first column. You'll notice that there's only one possible number for the first cell, so fill in a 5.Ģ.Continue scanning the first row. Here's an example of how to solve a level 1 Sudoku puzzle:ġ.Start by scanning the first row. Use pencil marks to keep track of all the possible numbers for a particular cell.ĥ.Repeat steps 1-4: Keep scanning the puzzle for singletons and pairs, and use process of elimination to fill in the remaining cells. If you find a pair like this, eliminate those two numbers from the other cells in the same row, column, or 3x3 box.ģ.Use process of elimination: If you have a row, column, or 3x3 box that has all but one of the numbers filled in, then you can use process of elimination to figure out what the remaining number must be.Ĥ.Keep track of possibilities: In some cases, there may be multiple possible numbers for a cell. When you find a cell like this, fill it in.Ģ.Check for pairs: Look for pairs of cells in a row, column, or 3x3 box that have the same two possible numbers. Here's how to solve a level 1 Sudoku puzzle:ġ.Look for singletons: Scan each row, column, and 3x3 box to look for any cells that have only one possible number. These puzzles have a lot of clues given at the start and require minimal logic to solve. Sudoku puzzles at level 1 are the easiest level and are a good starting point for those who are new to the game.
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