4 6 7 1
3 2 1
6 8
2 6 7
6 9
8 4 5
8 4
9 5 2
1 7 4 3
30-07-2017.......difficile 30-07-2017
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2 4 5 6 8 7 1 9 3
9 3 8 5 2 1 6 7 4
1 7 6 3 4 9 2 8 5
4 5 2 8 9 6 3 1 7
6 1 3 2 7 5 8 4 9
8 9 7 4 1 3 5 6 2
7 8 9 1 3 2 4 5 6
3 6 4 9 5 8 7 2 1
5 2 1 7 6 4 9 3 8
4=>(3,5) | 1=>(8,9) | 4=>(2,9) | 8=>(9,9) | 6=>(9,5) | 8=>(8,6) | 6=>(8,2) | 9=>(9,7) |

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

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

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

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

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

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