3 1 5 9 5 9 8 6 8 8 7 2 3 4 2 6 8 9 1 8 7 4 2 3 1 5 10-12-2020.......hard 10-12-2020 www.daily-sudoku-puzzle.com

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

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