9 6 8 1
2 3
8 4 3 7
8 9 6 1
5 9
1 8 2 7
2 9 4 6
4 5
8 3 9 2
06-04-2017.......medium 06-04-2017
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3 9 5 6 7 8 2 1 4
1 7 6 2 4 3 8 9 5
8 2 4 5 9 1 3 6 7
7 4 8 9 3 6 1 5 2
5 3 2 7 1 4 6 8 9
9 6 1 8 5 2 7 4 3
2 5 9 1 8 7 4 3 6
6 1 3 4 2 5 9 7 8
4 8 7 3 6 9 5 2 1
9=>(6,1) | 1=>(3,6) | 2=>(3,2) | 5=>(3,4) | 2=>(8,5) | 4=>(5,6) | 5=>(9,7) | 4=>(9,1) |

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

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

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

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

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

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