crosaw.blogg.se - Solving sudoku puzzles techniques

If the possible cells form a "fish" shape, then you can eliminate that number as a possibility for other cells in the same row, column, or 3x3 box. Swordfish Technique: This technique is a more advanced version of the X-wing technique, which involves looking for three rows or three columns in which a number can only appear in two or three cells.If these two cells are in the same row or column, then you can eliminate that number as a possibility for other cells in the same row or column. X-Wing Technique: This technique involves looking for two rows or two columns in which a number can only appear in two cells.If a group of numbers can only go in two, three, or four cells, then you can eliminate those numbers as possibilities for other cells in the same row, column, or 3x3 box.

Hidden Pair, Triple, and Quad Techniques: These techniques are similar to the naked pair, triple, and quad techniques, but instead of looking for groups of cells with the same set of possible numbers, you look for groups of numbers that only occur in two, three, or four cells within a row, column, or 3x3 box.

If all the numbers in a group are contained within that group and nowhere else in the same row, column, or 3x3 box, then you can eliminate those numbers as possibilities for other cells in the same group.

Naked Pair, Triple, and Quad Techniques: These techniques involve looking for groups of two, three, or four cells that have the same set of possible numbers.

If a number can only go in one cell in a given group, it must be that number, and you can fill it in.

Hidden Single Technique: This technique involves looking for cells that have only one possible number in a row, column, or 3x3 box.

If a cell has only one possibility, it must be that number, and you can fill it in immediately.

Naked Single Technique: The simplest and most straightforward technique is to look for cells with only one possible number.

Here are some of the most commonly used techniques:

There are many techniques for solving sudoku puzzles, ranging from simple to advanced. While the rules are simple, solving a sudoku puzzle can be a real brain teaser, requiring logical thinking, attention to detail, and patience. Sudoku is a popular puzzle game that challenges players to fill a 9x9 grid with numbers from 1 to 9, in such a way that each row, column, and 3x3 box contains all the numbers from 1 to 9.