Irregular Even-Odd Sudoku Rules
Even-Odd Sudoku is a variant of the classic Sudoku puzzle that adds an additional twist: the cells in the grid are marked with either a circle or a square, indicating whether the number in that cell must be odd or even.
Standard Sudoku rules apply: Each row, column, and 3x3 subgrid (also known as a "block" or "box") must contain all of the numbers from 1 to 9, without repetition.
Even/Odd indicators: Cells with circles must contain odd numbers (1, 3, 5, 7, 9), while cells with squares must contain even numbers (2, 4, 6, 8).
Irregular Even-Odd Sudoku Additional Rules
Irregular Sudoku Rule: Each row, column, and irregularly shaped block must contain all the digits (1-9) without repetition. This is the key difference.
In addition to these basic rules, Even-Odd Sudoku also has the following rules:
Cells with circles must contain odd numbers (1, 3, 5, 7, 9).
Cells with squares must contain even numbers (2, 4, 6, 8).
Irregular Even-Odd Sudoku = Irregular Sudoku + Even-Odd Sudoku
Irregular Even-Odd Sudoku puzzles can be challenging, but they are also a lot of fun. With practice and a bit of strategy, you can master this unique variant of the classic puzzle game.