9 4 5 6
1 7 2 8
9
5 6 2 7
8 6
7 3 9 4
5
4 7 1 2
6 7 3 8
26-12-2018.......difficile 26-12-2018
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9 7 8 1 4 3 5 6 2
4 1 5 7 2 6 8 3 9
6 3 2 8 5 9 7 1 4
1 5 6 3 9 4 2 8 7
8 4 9 2 1 7 3 5 6
7 2 3 6 8 5 9 4 1
2 9 1 5 6 8 4 7 3
3 8 4 9 7 1 6 2 5
5 6 7 4 3 2 1 9 8
7=>(1,2) | 5=>(2,3) | 2=>(6,2) | 7=>(5,6) | 8=>(4,8) | 5=>(3,5) | 2=>(5,4) | 5=>(6,6) |

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

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

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

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

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

6=>(6,4) | 8=>(7,6) | 4=>(7,7) | 6=>(7,5) | 8=>(6,5) |