3 5 4 2 9 6 4 7 2 1 5 6 2 3 3 9 2 5 7 1 4 8 1 8 4 4 6 14-01-2017.......hard 14-01-2017 www.daily-sudoku-puzzle.com

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

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