3 1 7 4 5 1 7 9 3 2 8 5 6 5 7 1 6 5 9 9 4 3 4 2 1 1 8 2 23-07-2017.......hard 23-07-2017 www.daily-sudoku-puzzle.com

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

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