5 3 8 4 6 4 9 7 1 2 3 1 5 2 4 8 6 6 8 9 7 2 6 2 4 4 8 3 7 14-12-2016.......hard 14-12-2016 www.daily-sudoku-puzzle.com

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

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