9 6 6 2 5 8 6 3 7 4 8 5 2 6 7 2 1 5 2 7 9 4 9 4 1 4 8 19-01-2020.......hard 19-01-2020 www.daily-sudoku-puzzle.com

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

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