4 5 1 1 6 7 3 1 8 9 2 8 5 7 2 6 5 9 3 5 1 6 9 5 4 6 4 7 28-01-2018.......hard 28-01-2018 www.daily-sudoku-puzzle.com

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

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