Sudoku: Solution Algorithms

1. Puzzle: $S[r][s]$, $r,s=0,...,M-1$. Sudoku Puzzle Example
2. Topologia:
   
   Possibles in each empty cell
3. Generate Topology, $Topology[r][s]$, all empty cells ($S[r][s]=0$).
4. Visualize: HTML & JavaScript
5. Solution: Algorithm
   1. Uniqueness Principle, cell $r,s$:

      Length of $Topology[r][s]$ is 1

   2. Existence Principle, cell $r,s$:

      Value in only row $r$, column $s$ or box $r,s$.

6. Generate Sudokus: Algorithm
7. Classification: Dificulty