3 1 7 5 3 6 7 4 6 4 9 2 7 5 7 8 5 5 3 3 4 9 8 2 1 14-04-2017.......hard 14-04-2017 www.daily-sudoku-puzzle.com

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

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