After elimination, we are left with e2 so we put a 5 in e2 cell and keep a possibility of a 5 in g3, h3, and i3 cells. Next, we notice there is a 5 in c1 cell hence d1, f1, g1 cannot have a 5.Hence, we have eliminated a1, d3, and e2 cells for putting a 1. After further scanning, we spot a 1 in a4 and d6 cell. Moving further, we figure there is 1 in i2. Hence, after scanning across, we see there is a 2 in b8 cell, hence we rule that a 2 can be placed either in a2 or c2 cells only.Now, we scan the rows and columns again and see that the possibility of another 2 can be in the a2, b2, c2 cells as there is already a 2 in the 3x3 grid of d to f cells and g2, h2, i2 cells are filled. Moving on, we go over the number 1 to 9 again.Hence, we are left with i1 cell to put a 9. Hence, we further know that a 9 cannot be placed in g1 cell. Looking further column-wise, we see a 9 in g4 and h7 cells. We left with possibility of a 9 either in g1 or i1 cells. This gives us cue that a 9 cannot be placed in g3, h3, i3, and h2 cells. Moving on, we have a 9 in b3 and another 9 in d2. However, we do not have a 6 in the surrounding columns, hence we keep it as a possibility and move on. So the possibility of a 6 remains in the g3, h3, and i3 cells. So, using logic as previously, we figure that g1, i1, h2 cannot have a 6 in them. Next, we see a 6 in a1 and another 6 in f2 cell. Moving on, we notice that we have a 5 in c1 cell.Hence, g1, i1, g3, h3, i3 cannot have a 4. Moving on, we notice that a3 has a 4 and 31 has a 4.We now see that g2 has a 3, e3 has a 3, hence we figure that c3, c2, b2, a2 cannot have a 3. After scanning through the rows and columns, we have a 1 in i2 and a 2 in f3. We shall solve the a1 to i1, a2 to i2, and a3 to i3 rows, columns, and grids to explain how to solve a Sudoku puzzle. This helps you in identifying combinations and later erase numbers that do not fit the solution. Filling in these numbers will give you the boost and cue to finding the missing numbers across corresponding rows, columns, and grids.Īnother most systematic Sudoku solver strategy is pencil marking which means you pencil in possible numbers inside cells after scanning rows, columns, and grids. This helps you in spotting which numbers are missing easily and quickly. For example, rows with almost 5 our 9 numbers or a 3x3 grid with 6 out 9 numbers pre-filled are a good place to start. Look for rows and columns with a lot of numbers already filled. (iii) No 3x3 grid can contain more than one of the same number from 1 to 9 Steps to Solve a Sudoku: 10 Sudoku Solver Tips & Tricks for Beginners (ii) No column can contain more than one of the same number from 1 to 9 (i) No row can contain more than one of the same number from 1 to 9 One needs to apply logic and keep few rules in mind: The objective of Sudoku is to fill in the missing numbers in a 9x9 grid so that each row, column, and 3x3 section boxes contain all digits between 1 to 9 without repetition. Today’s Sudoku Puzzle Online, 31 January 2023 with Answers How to Play Sudoku? Here are Sudoku tips, techniques and strategies to solve any Sudoku. We have techniques for all types of Sudoku difficulty level. Harder the puzzle, less numbers pre-filled in the grids. Easier the puzzle, more the numbers pre-filled in the grids. The difficulty level of a Sudoku puzzle can be easy, medium, hard, or very hard.
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