8 6 3 2 3 9 2 8 2 4 9 7 8 1 7 5 4 2 1 7 3 8 2 5 6 3 9 5 1 6 27-12-2018.......hard 27-12-2018 www.daily-sudoku-puzzle.com

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

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