3 2 7 9 8 1 9 2 7 3 7 6 8 1 6 2 4 9 3 6 2 9 8 5 1 4 5 4 2 8 15-01-2018.......hard 15-01-2018 www.daily-sudoku-puzzle.com

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

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