2 5 7 4
4 9 3 1 7
1 9 2
5 2 9 6 7
2 7 3
9 7 6 8 5
7 4 5
3 5 6 1 8
6 7 3 9
18-02-2018.......facile 18-02-2018
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6 8 2 5 9 7 3 4 1
4 5 9 3 1 2 7 8 6
3 1 7 8 6 4 5 9 2
5 3 1 2 4 9 8 6 7
8 2 6 1 7 5 4 3 9
9 7 4 6 3 8 2 1 5
7 4 8 9 2 1 6 5 3
2 9 3 4 5 6 1 7 8
1 6 5 7 8 3 9 2 4
1=>(1,9) | 9=>(1,5) | 2=>(8,1) | 7=>(3,3) | 2=>(2,6) | 5=>(2,2) | 6=>(2,9) | 8=>(2,8) |

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

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

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

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

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