7 3 1 3 6 9 2 9 7 4 5 3 6 9 8 8 9 6 1 4 7 6 9 5 4 2 7 12-08-2013.......hard 12-08-2013 www.daily-sudoku-puzzle.com

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

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