9 3 8 8 5 7 7 2 1 2 8 4 6 5 3 7 3 6 9 2 8 9 5 1 3 4 9 5 19-09-2017.......hard 19-09-2017 www.daily-sudoku-puzzle.com

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

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