2 9 4 8 1 7 3 1 5 6 5 9 9 4 8 5 1 9 6 2 3 6 2 7 8 6 7 5 25-03-2018.......hard 25-03-2018 www.daily-sudoku-puzzle.com

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

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