9 4 2 3
2 9 7 6
3 4 2 8
1 9 2 7
8 7 9 3
7 6 4 1
6 8 1 3
5 2 7 8
9 6 5 7
14-03-2019.......facile 14-03-2019
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9 4 6 2 3 8 7 1 5
8 5 2 9 7 1 3 4 6
3 1 7 5 6 4 2 8 9
1 3 9 4 5 2 6 7 8
6 8 4 7 1 9 5 3 2
2 7 5 6 8 3 4 9 1
7 6 8 1 4 5 9 2 3
5 9 1 3 2 7 8 6 4
4 2 3 8 9 6 1 5 7
6=>(1,3) | 8=>(1,6) | 1=>(1,8) | 5=>(1,9) | 8=>(2,1) | 6=>(5,1) | 2=>(6,1) | 7=>(7,1) |

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

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

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

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

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