9 6 2 7 7 1 6 9 8 7 1 7 4 9 7 8 5 2 3 6 4 7 3 1 6 8 9 2 3 5 13-10-2020.......hard 13-10-2020 www.daily-sudoku-puzzle.com

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

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