9 7 6 2 3 4 1 5 8 9 7 4 3 7 1 1 4 8 6 2 7 9 6 8 2 1 3 5 19-07-2017.......schwer 19-07-2017 www.daily-sudoku-puzzle.com

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