Easy Sudoku Puzzles Fall 2007, David Matuszek
 ```int[][] problem = { { 0, 8, 0, 0, 0, 0, 2, 0, 5 }, { 7, 0, 1, 4, 0, 0, 0, 8, 9 }, { 9, 0, 0, 3, 5, 0, 0, 1, 0 }, { 0, 0, 9, 0, 0, 7, 6, 3, 0 }, { 0, 0, 2, 0, 0, 9, 7, 0, 0 }, { 0, 7, 8, 5, 0, 0, 0, 0, 0 }, { 0, 6, 0, 0, 4, 5, 0, 0, 3 }, { 2, 9, 0, 0, 0, 6, 5, 0, 1 }, { 4, 0, 5, 0, 0, 0, 8, 7, 0 } };```

 ```int[][] problem = { { 0, 0, 4, 0, 0, 0, 0, 6, 7 }, { 3, 0, 0, 4, 7, 0, 0, 0, 5 }, { 1, 5, 0, 8, 2, 0, 0, 0, 3 }, { 0, 0, 6, 0, 0, 0, 0, 3, 1 }, { 8, 0, 2, 1, 0, 5, 6, 0, 4 }, { 4, 1, 0, 0, 0, 0, 9, 0, 0 }, { 7, 0, 0, 0, 8, 0, 0, 4, 6 }, { 6, 0, 0, 0, 1, 2, 0, 0, 0 }, { 9, 3, 0, 0, 0, 0, 7, 1, 0 } };```

 ```int[][] problem = { { 0, 1, 6, 0, 0, 9, 0, 0, 2 }, { 0, 0, 0, 0, 3, 1, 0, 4, 0 }, { 8, 7, 0, 5, 2, 0, 0, 1, 0 }, { 0, 0, 9, 0, 8, 0, 2, 0, 1 }, { 5, 0, 0, 6, 0, 7, 0, 0, 9 }, { 4, 0, 1, 0, 5, 0, 3, 0, 0 }, { 0, 4, 0, 0, 7, 8, 0, 9, 5 }, { 0, 9, 0, 3, 6, 0, 0, 0, 0 }, { 2, 0, 0, 1, 0, 0, 6, 3, 0 } };```

 ```int[][] problem = { { 0, 0, 0, 2, 0, 3, 9, 6, 0 }, { 2, 0, 6, 0, 0, 7, 0, 3, 0 }, { 7, 0, 0, 1, 5, 0, 8, 0, 0 }, { 3, 6, 0, 0, 7, 2, 5, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 4, 0, 8, 6, 0, 0, 3, 7, 9 }, { 0, 0, 7, 0, 6, 8, 0, 0, 3 }, { 0, 3, 0, 7, 0, 0, 4, 0, 6 }, { 0, 1, 2, 9, 0, 4, 0, 0, 0 } };```