1 2 4 7 8 1 5 6 9 1 1 2 4 7 2 6 7 4 8 7 9 7 4 3 3 1 7 8 20-01-2021.......hard 20-01-2021 www.daily-sudoku-puzzle.com

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

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