There are more than a few techniques to solve a Sudoku puzzle, but per Conceptis Puzzles, the easiest way to a Sudoku solution is to, “Scan rows and columns within each triple-box area, eliminating numbers or squares and finding situations where only a single number can fit into a single square.” If you’re looking to …
What does naked mean in Sudoku?
In sudoku, a naked pair is a set of exactly two candidates that are in exactly two squares in a row, column, or block. For example: In this example, the 2 and 3 in red on the right side is a naked pair. One of the squares in the pair has to be 2, and one of the squares in the pair has to be 3.
What is the best Sudoku strategy?
The most basic strategy to solve a Sudoku puzzle is to first write down, in each empty cell, all possible entries that will not contradict the One Rule with respect to the given cells. If a cell ends up having only one possible entry, it is a “forced” entry that you should fill in.
Do you need technique to solve a Sudoku puzzle?
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.
How to solve hidden sets with Sudoku assistant?
Eliminate all possibilities of that number in any row or column defined by that grid but not including the grid points themselves. If you look at the JavaScript code for the Sudoku Assistant, you will see that it uses the same function (analyzeX, just 16 lines) to find all possible X-Wings, Swordfish, hidden sets, and “naked” sets.
How are numbers guaranteed to fit on a Sudoku board?
You know that each block, row and column on a Sudoku board must contain every number between 1 and 9. 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.
What are the rules for locked cells in Sudoku?
As for locked cells, there are two subset rules. The naked subset rule states: When n candidates are possible in a certain set of n cells all in the same block, row, or column, and no other candidates are possible in those cells, then those n candidates are not possible elsewhere in that same block, row, or column.
