3 1 7 2
5 9 2 7
2 8 9
7 5
1 8 2 9
6 4
7 1 6
5 8 2 7
6 4 5 3
18-01-2021.......facile 18-01-2021
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9 3 1 5 7 2 8 4 6
8 5 4 3 9 6 1 2 7
6 2 7 4 1 8 3 9 5
7 4 2 8 5 9 6 1 3
1 6 8 7 3 4 2 5 9
3 9 5 2 6 1 7 8 4
4 7 3 1 8 5 9 6 2
5 8 6 9 2 3 4 7 1
2 1 9 6 4 7 5 3 8
9=>(1,1) | 7=>(3,3) | 1=>(9,2) | 9=>(6,2) | 6=>(2,6) | 5=>(6,3) | 5=>(5,8) | 3=>(5,5) |

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

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

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

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

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

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