2 7 4 1
4 6 1 5
1 4 3 9
2 3 9 5
9 1 2 8
3 2 6 7
5 4 3 7
4 7 6 3
2 3 7 8
18-07-2017.......facile 18-07-2017
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5 9 3 6 8 2 7 4 1
4 8 6 9 1 7 3 5 2
1 7 2 5 4 3 9 8 6
7 2 4 3 9 8 1 6 5
9 6 1 7 5 4 2 3 8
3 5 8 1 2 6 4 7 9
6 1 5 4 3 9 8 2 7
8 4 9 2 7 5 6 1 3
2 3 7 8 6 1 5 9 4
3=>(1,3) | 5=>(1,1) | 7=>(4,1) | 8=>(8,1) | 2=>(3,3) | 2=>(2,9) | 3=>(2,7) | 1=>(7,2) |

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

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

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

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

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