5 2 3 9 6 8 3 1 2 4 8 2 9 4 7 6 9 6 4 5 7 1 1 8 5 4 6 2 06-02-2018.......hard 06-02-2018 www.daily-sudoku-puzzle.com

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

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