5 2 4 9 1 8 1 7 6 6 9 2 9 1 8 5 7 6 4 8 5 2 3 5 3 1 6 5 31-12-2016.......hard 31-12-2016 www.daily-sudoku-puzzle.com

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

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