9 7 5 4 4 5 2 6 8 1 2 4 8 9 6 7 3 3 5 8 6 4 1 2 7 9 28-07-2017.......hard 28-07-2017 www.daily-sudoku-puzzle.com

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

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