9 3 1 5 2 7 6 5 8 3 6 4 1 5 3 4 2 9 8 1 1 3 2 4 7 9 5 6 23-09-2020.......hard 23-09-2020 www.daily-sudoku-puzzle.com

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

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