6 5 8 7 2 9 4 8 6 2 5 9 5 6 3 1 3 4 9 2 7 5 3 3 6 8 1 20-12-2020.......hard 20-12-2020 www.daily-sudoku-puzzle.com

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

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