1 6 5
9 4 3
8 7 1
6 9 5 2
8 9
2 3 6 7
1 3 4
5 3 4
7 5 6
18-04-2018.......hard 18-04-2018
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3 7 1 2 6 5 8 4 9
8 2 9 4 7 1 3 6 5
6 5 4 8 3 9 2 7 1
4 1 6 9 8 7 5 3 2
5 8 7 3 4 2 1 9 6
2 9 3 5 1 6 7 8 4
1 3 8 6 2 4 9 5 7
7 6 5 1 9 3 4 2 8
9 4 2 7 5 8 6 1 3
9=>(6,2) | 6=>(5,9) | 1=>(5,7) | 6=>(7,4) | 6=>(2,8) | 1=>(4,2) | 5=>(2,9) | 5=>(5,1) |

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

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

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

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

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

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