5 8 4 6
1 9
4 2 7 3
8 2 3 5
4 6 9 5
4 7 8 1
8 7
6 8 1 2
03-11-2018.......hard 03-11-2018
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5 7 9 8 2 3 1 4 6
3 1 8 6 9 4 2 5 7
4 2 6 5 1 7 8 3 9
8 6 2 9 3 5 7 1 4
9 5 4 1 7 2 3 6 8
7 3 1 4 6 8 9 2 5
2 4 3 7 5 9 6 8 1
1 9 5 2 8 6 4 7 3
6 8 7 3 4 1 5 9 2
4=>(2,6) | 4=>(5,3) | 9=>(3,9) | 4=>(9,5) | 7=>(5,5) | 8=>(6,6) | 7=>(9,3) | 9=>(9,8) |

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

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

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

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

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

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