7 5 8 9
6 2 4 7
8 6
6 1 5 2
9
9 3 7 6
5 1
4 5 7 2
3 8 2 4
08-04-2018.......medium 08-04-2018
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1 7 2 5 3 4 8 9 6
6 5 3 8 2 9 4 1 7
8 4 9 1 6 7 2 5 3
3 6 1 7 4 5 9 2 8
5 8 7 2 9 6 1 3 4
2 9 4 3 8 1 7 6 5
9 2 6 4 5 8 3 7 1
4 1 5 9 7 3 6 8 2
7 3 8 6 1 2 5 4 9
6=>(1,9) | 2=>(7,2) | 8=>(5,2) | 1=>(8,2) | 6=>(7,3) | 2=>(3,7) | 2=>(5,4) | 3=>(1,5) |

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

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

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

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

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

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