If one wants to teach kids Sudoku variations then Even-Odd Sudoku is the best puzzle type to start with. It is because in Even Odd Sudoku puzzle is divided into two parts. One of the parts will contain Even numbers and another part will contain Odd numbers. These two parts can be solved independently. So it is like dividing the Classic Sudoku puzzles into two Mini puzzles and so making it very easy. In the Even-Odd Sudoku, all the Even numbers are marked with grey cells. Even Odd Sudoku is also known with another name called Odd-Even Sudoku. In Odd-Even Sudoku all odd numbers are marked with grey. Solving wise there is not much difference between Even-Odd Sudoku and Odd-Even Sudoku. However, there are other variations of this Sudoku type e.g. Even Sudoku, Odd Sudoku etc. In these puzzles not all the Even or Odd numbers will be marked i.e. only a few cells will be marked and remaining cells which are not marked can contain either Even or Odd numbers.
There are many Even-Odd Sudoku puzzles which I have created and I will be using this page to give reference links to these puzzles.
Rules of Even/Odd Sudoku
Classic Sudoku Rules apply. Additionally, all the cells which can contain the even/odd numbers are greyed.

Odd-Even Sudoku (Fun With Sudoku #132)

Even Odd Sudoku (Fun With Sudoku #120)

Even Odd Sudoku (Fun With Sudoku #110)

### Even Odd Sudoku (QC-34)

Rules of Even Sudoku
Classic Sudoku Rules apply. Additionally, shaded cells contain only even digits (2, 4, 6 and 8).

### Even Sudoku (Mini Sudoku Series #3)

Rules of Odd-Even Consecutive Sudoku
Classic Sudoku Rules apply. Additionally, adjacent cells containing odd and even numbers are marked. Adjacent cells with no marking must either contain both odd number or both even numbers.

### Odd-Even Consecutive Sudoku (Fun With Sudoku #107)

Rules of Odd Sudoku
Classic Sudoku Rules apply. Additionally, shaded cells contain only odd digits (1, 3, 5, 7, and 9).

Odd Sudoku (Mini Sudoku Series #18)

### Odd Sudoku (Daily Sudoku League #31)

Even (Odd) Variations Sudoku puzzles
Following is the list of Even-Odd Sudoku variations puzzles. Rules for each of these variations are given the following links.

### Irregular Even Sudoku (Guest Authors Sudoku #1)

Rules of 6x6 Odd/Even Sudoku
Place a digit from 1 to 6 in each empty cell so that each digit appears exactly once in each row, column outlined region.
Additionally, all the cells which can contain the odd/even numbers are greyed.

### Even Odd Sudoku (Mini Sudoku Series #89)

Checkout more Sudoku Variations by clicking on the below image Sudoku Variations Main Page