PUZZLE TECHNIQUES
NON-CONSECUTIVE SUDOKU SOLVING TIPS
Below we will explain techniques and methods to help you how to solve a Non-Consecutive Sudoku. You can go to our page Non-Consecutive Sudoku and solve these puzzles online or variants like:
NON-CONSECUTIVE SUDOKU RULES
A Non-Consecutive Sudoku is a popular variant where no two adjacent cells have consecutive values. For example, if a cell contains 4, then any neighbouring square cannot contain either 3 or 5. Diagonally connected cells can contain consecutive numbers.
DIGITS IN A MIDDLE POSITION
Look for digits in a middle position of a subgrid in a row or column. In our example number 6 in column 4 is in a middle position of subgrid 8. What is the influence of that position? It forces the digit to another row or column of that subgrid.
- Number 5 cannot go in column 4 of subgrid 8.
- Number 5 must go in column 4 of subgrid 5.
- Number 5 must go in column 5 of subgrid 8.
- Number 5 must go in column 6 of subgrid 2.
TRIPPLE WITH CONSECUTIVE PAIR
When we look at row 7 of our example, then we see a tripple (129) with a consecutive pair (12). So 1 and 2 cannot go next to each other, so digit 9 goes to R7C5.
CELL WITH 2 OR MORE NEIGHBORS WITH A NUMBER
You are more likely to find a cell of which you can easily find the number if you search for cells with 2 or more neighbors with a number. When we look at R2C4, then we see that this cell has two neighboring cells with a number.
- Due to number 2 in R3C4, we cannot enter numbers 1 or 3 in R2C4.
- Due to number 7 in R2C5, we cannot enter numbers 6 or 8 in R2C4.
- So we can only enter number 5 in R2C4.
HOUSEs WITH 3 OR 4 MISSING NUMBERS
In sudoku language a house is a row, column or subgrid. When we look at column 7 of our example, then we notice:
- There are 4 missing numbers..
- There is a 127 tripple.
- So we can only enter number 5 in R2C7.
NON-CONSECUTIVE SUDOKU TIPS