| LeastCandidatesStrategy | A strategy for solving Sudoku puzzles that chooses as a start cell the last cell found having the least number of candidates |
| Puzzle | A Sudoku Puzzle class |
| SimpleStrategy | A simple strategy for solving Sudoku puzzles: it chooses the first unassigned cell from which to start assigning values |
| Strategy | A Strategy is an approach to solving a Sudoku puzzle |
1.3.4