Killer Sudoku Tips And Strategies

A new killer sudoku every day approach to weekly 183.

Killer sudoku tips and strategies. This puzzle is quite hard due to the number of large cages in it. The second is to consider the different ways that a sum can be created. To get started on this puzzle the extended rule of 45 needs to be applied. A new killer sudoku every day.

Lets start in the lower right nonet. Killer sudoku is a fun variant of the standard sudoku puzzle. It is either 256 or 238. A killer sudoku is a puzzle with 9 rows of 9 cells each.

For example the 42 cage in the upper right cannot contain 1 or 2. A new killer sudoku every day. The red cell blue cell 3. For example consider this section of puzzle 15168.

Simple killer sudoku solving techniques. The 16 cage in the bottom left corner has just one cage combination 7 9 so let s write it in we don t know which way around the two numbers will be so we use pencil marks notes to enter them into both cells the left hand cell can. An essential killer sudoku solving technique is the. Start by using the rule of 45 on the left 2 columns yielding.

There is also an overall strategy that you will learn but as you gain experience you may develop a better approach to solving killer sudokus. This strategy list is by no means complete. Killer sudoku adds a new dimension to standard sudoku requiring arithmetic to solve. Look at the 13 cage.

The third is to consider the total value of a region. Killer sudoku solving strategies there are three basic methods used to solving killer sudoku puzzles. Many strategies can be further extended and we do not have a complete theory of all sudoku puzzles. A 3 in r4c2.

All the rules remain in place with regard the rows columns and 3 x 2 or 3 x 3 squares containing the numbers 1 6 or 1 9 once and once only. The first is to use the strategies for solving regular sudoku puzzles. But first you need an introduction in the language of killer sudoku. Start by looking at what cannot be in the large cages.

This means that all the sums for the 20 cage that contain 2 and 5 or 6 and 3 or 8 are illegal. You will need new specialised killer sudoku solving techniques to progress in these puzzles besides the standard sudoku techniques you will already know. Here is an approach to weekly 183. Also if we apply rule of 45 to the middle nonet we get that see that the red cell must 9 8 or 7.

A good way to start solving a killer sudoku puzzle is to look for cages that have just one cage combination. Here is an approach to daily 1271.