6 1 4 4 9 3 2 1 8 6 7 4 8 5 9 3 5 2 7 1 9 6 7 5 8 7 2 6 05-01-2019.......hard 05-01-2019 www.daily-sudoku-puzzle.com

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

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