Assign numbers to the tiles based on their final correct positions if they only have images on them. For example, if you know the tile belongs in the top left corner, then label it “1” so you know it belongs in the first position. Usually, the empty square will end in the bottom right corner, but it may vary depending on your puzzle.
You will not have to move the first tile again after you set it in position.
It doesn’t matter where the gap ends up after you make this move. If you move the second tile into the middle of the top row, then you’ll usually need to move it and the first tile again when you try to slot the third one into place. [3] X Research source By moving the third one into that spot instead, you’re planning ahead to rotate the tiles into place.
This is usually the trickiest part of solving a 3 x 3 puzzle and may require you to move a lot of the tiles in the bottom 2 rows.
Once you finish the top row, leave it alone. You’ll never have to move them again and you only need to work with the bottom 2 rows. [6] X Research source
You may need to move or rotate the seventh tile out of its position while you try to get the fourth tile in the center. If this happens, work the tiles around the board so the gap is in the fourth space, the seventh tile is in the center, and the fourth tile is in either space directly adjacent to the seventh tile. Then, you can easily slide all the tiles back into the correct positions.
Do not move the tiles in the left column once you get them in the right spots.