8 5 3 1 7 9 7 1 8 9 5 2 7 1 8 9 6 5 4 5 4 6 7 3 8 7 4 1 13-02-2017.......hard 13-02-2017 www.daily-sudoku-puzzle.com

8 4 2 5 3 1 9 6 7 6 9 3 4 2 7 1 8 5 1 5 7 9 8 6 4 3 2 9 3 5 1 4 8 7 2 6 4 7 1 2 6 5 8 9 3 2 6 8 7 9 3 5 1 4 7 1 6 3 5 9 2 4 8 5 8 4 6 1 2 3 7 9 3 2 9 8 7 4 6 5 1

9=>(1,7) | 2=>(6,1) | 5=>(5,6) | 7=>(6,4) | 1=>(6,8) | 7=>(4,7) | 4=>(5,1) | 9=>(6,5) | 9=>(9,3) | 8=>(6,3) | 3=>(4,2) | 8=>(4,6) | 3=>(6,6) | 6=>(4,9) | 3=>(7,4) | 2=>(5,4) | 3=>(5,9) | 6=>(5,5) | 6=>(3,6) | 3=>(8,7) | 4=>(2,4) | 2=>(2,5) | 9=>(3,4) | 1=>(4,4) | 1=>(7,2) | 6=>(9,7) | 1=>(8,5) | 1=>(3,1) | 5=>(8,1) | 8=>(8,2) | 4=>(4,5) | 5=>(9,8) | 2=>(9,2) | 2=>(1,3) | 4=>(1,2) | 6=>(2,1) | 7=>(7,1) | 5=>(3,2) | 7=>(3,3) | 5=>(2,9) | 6=>(1,8) | 3=>(2,3) | 8=>(2,8) | 3=>(3,8) | 2=>(3,9) | 6=>(7,3) | 8=>(7,9) | 4=>(3,7) | 4=>(7,8) | 9=>(7,6) | 2=>(7,7) | 2=>(8,6) | 9=>(8,9) |