# Odd Even Sudoku

## Background

In addition to the standard Sudoku rules, all shaded cells must contain either only odd numbers or only even numbers, depending on the original clues.

## Puzzle and Goal

An unsolved puzzle consists of a 9x9 grid containing nine 3x3 regions. Some of the cells have been shaded, and some of the cells (both shaded and unshaded) contain a number between 1 and 9.

The goal is to fill in all the cells so as to create a Latin Square.

## Rules

The solved grid must satisfy the following conditions:

Every rank and region must contain each digit from 1 to 9.

If the clues in the shaded cells are odd, then all digits in shaded cells must be odd; likewise, if the clues in the shaded cells are even, then all digits in those cells must be even.