5 3 6 1 5 4 4 8 7 9 5 6 4 9 2 6 7 6 2 8 5 8 6 2 3 1 21-09-2016.......hard 21-09-2016 www.daily-sudoku-puzzle.com

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

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