veryHard5x5.txt

5

 1  4 23  x 12 |  3  x  x 14 11 |  x 17 25  x 22 |  x 16  9 13 20 |  x  x  x  x 24 
10  x  x  3  x |  9  x 15  2  x | 21  x 11  x  5 |  x  8  1 25  x |  x  7  x  x 14 
 x 11 22  8  x |  x 19  x 12 17 | 13  x  2  x  x | 23 14  3  x  x |  x  x  x  x  5 
20  x  x 16  7 |  x  x 25 13  1 |  x 14 19 24  x |  5  x  x  x  x |  x  x  8  x  x 
 x 25  5 13  2 |  x  6 21 16  x |  9 23  x  x  x |  x  x  x  x 17 |  x 12 11  x 10 
----------------------------------------------------------------------------------
 9  6 21  x  x | 19  7  x  x 22 |  4  3  8 13  x |  2  x  x 24 23 | 16  1  x 14  x 
 7  x  x 23  x |  x  1  x  x 14 |  x 21  x  6 16 | 12 19  x 15 10 |  x  4  x 13 11 
 x  x  x  x  x |  5 17  9 10 24 | 23  x  x  x 14 | 25  x  x 21  8 |  2  x 15  x  x 
 x  x  x  x  x |  x 16  x  4 25 | 10 11  x  x  x |  x  3 14  x  x |  x 23  x 19  7 
 x 13  x  x 19 | 15  x 11 23  x | 22 20  x 18  x |  x  x  7  x  x |  6  x 10 24  8 
----------------------------------------------------------------------------------
 x  8  x  x  x |  x  x  x  9  3 |  x 12  x 23  x |  x  1 22  x  x |  x  x  x  5  x 
24  2 11  x  x | 12 25 17  x  x |  x  7  x  4  x |  x  x 15  8  x |  x  x  x  x 16 
19 21 12  x  x |  x  x  x  x  x |  x  x 18  x  x |  x  x  x  x  x |  x  x 13  9  4 
 6  x  x  x  x |  x 22 14  x  x |  x 15  x 25  x |  x  x 23 17  4 |  x  x 18 12 21 
 x 18  x  x  x |  x  x  1  6  x |  x 22  x  5  x |  7 21  x  x  x |  x  x  x 25  x 
----------------------------------------------------------------------------------
15 17  9  x 13 |  x  x  4  x  x |  x 16  x 11 23 |  x 24 12  x  3 | 22  x  x  8  x 
16  7  x  6  x |  x  x 12 11  x |  x  x  x  3 19 | 17  2  x  4  x |  x  x  x  x  x 
 x  x  x  x  4 | 17  3  x  x  2 | 12  x  x  x 24 |  9  6 20 18  1 |  x  x  x  x  x 
11  3  x 19  x | 14 23  x 24  9 |  6 25  x 20  x | 13  x  x  5  x |  x 16  x  x 18 
 x 12  x 18 24 |  6 13  x  x 20 |  x  9 21 17 15 |  8  x  x 23 11 |  x  x  3  4  2 
----------------------------------------------------------------------------------
 2  x 16  4  x |  1  x  x  x  x |  x  x  x 21  8 |  x  7  5 22  x | 24 13 12 10  x 
 x  x 24  x  x |  x  x  x  x 21 |  x  4 12  1  x | 16 20 10  x  x | 18 25  x  x 23 
18  x  x  x  x |  x  x  8 19 10 |  x  x  6  x  7 | 15 17  x  1  x |  x  2 14 20  x 
13  x  x  1  x |  x  4 18 15  x |  5  x 24  x 17 |  x 23 19  x 14 |  x  6  x  x  3 
22  x  x  x  x | 23 12 24 17  x | 16  x 14 10  x |  6 25  x  x 21 |  4  x  9 15  1 

(5x5 Sudoku puzzle from www.menneske.no/sudoku/5/eng/)