9 4 1 8 5
5 7 4
4 2
4 2 3
8 9
9 3 7
9 6
1 4 8
2 7 5 6 9
05-04-2018.......hard 05-04-2018
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7 6 3 9 4 2 1 8 5
9 2 1 6 5 8 3 7 4
8 5 4 7 3 1 2 9 6
4 1 7 2 9 6 5 3 8
6 3 8 5 7 4 9 1 2
5 9 2 8 1 3 4 6 7
3 8 9 4 2 7 6 5 1
1 4 6 3 8 5 7 2 9
2 7 5 1 6 9 8 4 3
3=>(2,7) | 9=>(2,1) | 9=>(4,5) | 2=>(7,5) | 1=>(6,5) | 7=>(8,7) | 6=>(8,3) | 3=>(1,3) |

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

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

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

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

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

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