8 1 9 4
7 1 6 8
2 3 1 6
3 6 2 8
5 6 9 7
8 9 4 2
5 3 4 2
9 8 4 1
4 6 8 1
23-08-2017.......facile 23-08-2017
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6 5 3 2 7 8 1 9 4
7 4 1 9 6 5 2 8 3
2 8 9 4 3 1 6 7 5
9 3 4 6 2 7 5 1 8
5 2 6 8 1 3 9 4 7
8 1 7 5 9 4 3 2 6
1 7 5 3 4 9 8 6 2
3 9 2 7 8 6 4 5 1
4 6 8 1 5 2 7 3 9
2=>(1,4) | 5=>(1,2) | 3=>(1,3) | 6=>(1,1) | 1=>(7,1) | 3=>(8,1) | 9=>(4,1) | 8=>(3,2) |

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

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

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

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

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