3 6 8 7
4 2 1 8
9 3
6 4 8 5 3
9 3 1 6 7
4 2
8 3 5 1
9 5 1 3
18-07-2017.......difficile 18-07-2017
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5 3 1 6 2 8 9 7 4
7 4 2 9 5 3 1 8 6
9 6 8 1 7 4 2 5 3
1 7 6 4 8 5 3 2 9
3 5 4 7 9 2 8 6 1
8 2 9 3 1 6 7 4 5
4 1 5 8 3 7 6 9 2
6 8 3 2 4 9 5 1 7
2 9 7 5 6 1 4 3 8
3=>(5,1) | 8=>(3,3) | 1=>(3,4) | 4=>(5,3) | 7=>(9,3) | 8=>(7,4) | 8=>(6,1) | 7=>(8,9) |

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

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

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

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

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

9=>(5,5) | 4=>(8,5) | 9=>(8,6) |