5 9 6 2
7 8 5 9
1 6
4 5 3 8
7 6
5 4 7 2
6 3
4 6 9 1
2 3 4 8
07-03-2018.......medium 07-03-2018
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5 8 3 9 1 6 7 4 2
6 7 2 8 4 5 1 9 3
4 9 1 7 3 2 6 8 5
1 2 4 5 6 3 8 7 9
7 3 9 2 8 1 4 5 6
8 6 5 4 9 7 2 3 1
9 5 6 1 7 8 3 2 4
3 4 8 6 2 9 5 1 7
2 1 7 3 5 4 9 6 8
6=>(2,1) | 2=>(3,6) | 7=>(4,8) | 3=>(6,8) | 2=>(8,5) | 2=>(7,8) | 6=>(9,8) | 4=>(3,1) |

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

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

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

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

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

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