5 2 9 6
1 7
6 4 8
7 4 9 6 8
1 8 5
8 9 6 3 1
5 2 1
7 6
3 9 6 2
02-11-2017.......medium 02-11-2017
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8 5 7 2 3 9 4 6 1
1 4 3 6 5 8 2 9 7
2 9 6 1 4 7 8 3 5
3 7 4 5 9 1 6 8 2
6 1 2 4 8 3 7 5 9
5 8 9 7 6 2 3 1 4
9 6 5 8 2 4 1 7 3
7 2 8 3 1 5 9 4 6
4 3 1 9 7 6 5 2 8
4=>(1,7) | 7=>(1,3) | 6=>(2,4) | 6=>(7,2) | 2=>(4,9) | 6=>(5,1) | 7=>(5,7) | 7=>(7,8) |

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

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

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

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

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

5=>(4,4) | 1=>(4,6) |