9 1 8 6 4 7 2 4 6 9 7 3 9 4 5 5 9 4 8 5 2 3 4 2 9 5 6 9 2 7 3 8 22-12-2018.......hard 22-12-2018 www.daily-sudoku-puzzle.com

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

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