8 1 3 4 7 2 6 2 9 1 5 3 4 4 3 7 3 2 9 6 7 1 2 8 6 9 5 13-04-2014.......hard 13-04-2014 www.daily-sudoku-puzzle.com

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

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