Sudoku

1. What is Sudoku?

1.1. puzzle presented on a square grid that is usually 9 × 9

2. How does Sudoku Work?

2.1. The way to solve Sudoku quickly

2.2. The Hardest Sudoku

2.2.1. How can people come up with "Hard" Sudoku?

2.2.2. Ways or patterns to make Sudoku

3. Arithmetical Analysis

4. Logical Approach

5. Sudoku Probability

5.1. The chances for one box to take a certain number

5.2. Method to find out the correct number

6. Relations with Gödel numbers

6.1. What are Gödel numbers?

6.2. The use of Gödel numbers in Sudoku?

7. Permutation

8. Latin Squares

8.1. The relationship between Latin Squares and Sudoku