The One Rule: Fill in all blank cells making sure that each row, column and 3 by 3 box contains the numbers 1 to 9. Sudoku Puzzle Tips and Tricks take you an hour in solving the problem. There are four important pointers that you need to put in your mind when you try a Sudoku. Illustrative Sudoku tips teach you how to solve. Try My Sudoku Tips And Become A Better Sudoku Solver! Would some Sudoku tips help you turn from an amateur to. Searching for the Best Sudoku Tips? This #1 Ranking Sudoku Guide will give You all the Powerful Solving Techniques, Strategies and Insider Tips to Master the Game. How to Solve a Sudoku. Sudoku is a numbers puzzle that has swept the world. It is very fun to play, but can be tricky and confusing at first. The objective of the. Sudoku is a logical puzzle game. You’ll get easy access to all six daily puzzles. Sudoku Solving Techniques. One of the greatest aspects of Sudoku is that the game offers engaging challenges to both the novice, as well as the seasoned puzzle player. Whenever they play a puzzle tailored for their level of competence, both the beginner and the experienced Sudoku solver will have to put a good amount of thought and technique into completing the task. Their approach, though, may not be the same. Solving a hard Sudoku puzzle will require quite a different set of techniques compared to an easy one. This article presents nine such techniques; in increasing difficulty. Use the first few techniques to insert as many numbers as you can. Then, when you can add no more numbers to the board using the basic techniques, try the more advanced ones. Do one at a time until you can plot one more number into a cell. Then, start with the basic techniques again, and repeat the process. You should be able to solve almost any Sudoku puzzle using these techniques. This happens whenever all other numbers but the candidate number exists in either the current block, column or row. Therefore, if a number, say 4, can only be put in a single cell within a block/column/row, then that number is guaranteed to fit there. This example illustrates the number 4 as the unique candidate for the cell marked in red. The example shows that the number 7 can only be inserted in the red cells of the middle row. Thus you can remove 7 as a possible candidate from the rest of the row. In the middle and the middle- right blocks, the number 8 must be placed in one of the red cells. This means, we can eliminate 8 from the upper and lower rows in the middle- right column. These two numbers appear as candidates in all of the other open cells in that column too, but since they are the only two candidates in rows 1 and 5, these two numbers cannot appear anywhere else in the row, thus you can remove them. In the example, the two candidate pairs circled in red, are the sole candidates. Since 4 and 7 must be placed in either of these two cells, all of the pairs circled in blue, can remove those numbers as candidates. ![]() In this puzzle, this means 1 becomes sole candidate in the second row; 2 becomes sole candidate in row 6; and thus, 6 is sole candidate for row number 4. For example, let us say the pairs circled in red were instead triple candidates of the numbers 1, 4, 7. This would mean those three numbers would have to be placed in either rows 1, 2 or 5. We could remove these three numbers as candidates in any of the remaining cells in the column. This technique even works with four candidate numbers, assuming you have 4 possible candidates in four different cells in a row/column. In this example, we see that the numbers 5, 6, 7 can only be placed in cells 5 or 6 in the first column (marked in a red circle), and that the number 5 can only be inserted in cell number 8. ![]() Since 6 and 7 must be placed in one of the cells with a red circle, it follows that the number 5 has to be placed in cell number 8, and thus we can remove any other candidates for this cell; in this case, 2 and 3. In this example, let's say that the red and blue cells all have the number 5 as candidate numbers. Sudoku building ideas for you top sudoku tricks and Windows 10 tips and tricks 1. Magnifier Tips and Tricks post. The Mathematics of Sudoku Tom Davis [email protected]. September 13, 2012 1 Introduction Sudoku is a puzzle presented on a square grid that is usually 9 Killer Sudoku Solving Strategies There are three basic methods used to solving killer sudoku puzzles. Now, imagine if the red cells are the only cells in column 2 and 8 in which you can put 5. Well, now, this means you can eliminate 5 as the candidate for all the blue cells. This is because in the top row, either the first or the second red cell must have a 5, and the same can be said about the lower row. ![]() In most cases, the technique might seem like much work for very little pay, but some puzzles can only be solved with it. So if you want to be a sudoku- solving master, read on! Now, assume that in column 2, 4, 6 and 8, the only cells that can contain the number 3 are the ones marked in red. You know that each column must contain a 3. We can eliminate 3 as candidate in every cell marked in blue. The reason for this is that if we consider the possible placements of the number 3 in the red cells, we get two alternatives: either you must put 3s in the green cells, or in the purple cells, as example C shows. In any case, each of the rows 2, 4, 6 and 8, must contain a 3 in one of the colored cells, so no other cell in those rows can contain a 3. You look for cells with common candidate numbers that can be chained together like in example D. If you start on, say, the top- left red cell. Then you draw a line either vertically or horizontally until you reach another cell containing the same candidate number. Then you repeat this pattern until you return to the original cell. If you reach the original cell, you have a swordfish pattern! Unfortunately, the technique is not the easiest to utilize. Let us assume that the candidates in the red cells are the sole candidates for those cells. Then follow on and fill in the rest of the red cells. Now take a note of the values you enter along the way. Go back to the cell you started with and try the other candidate number for that cell, and fill in the other red cells as well. Compare the numbers you got now with the first result. You may find that in both cases, a certain cell must contain a specific number. Now, try and enter a 6 in the starting cell instead, and move the other way around, entering candidate values. When you reach the above- right neighboring cell again, you will find it must contain a 9 this time around too. Thus this cell must contain a 9. Hope this will help you crack even the thoughest sudoku puzzles out there.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
November 2017
Categories |