2 7 4 1
2 9 6
1 6
8 3 5
9 5 2 1
6 7 4
5 8
8 7 4
9 3 1 2
08-03-2017.......hard 08-03-2017
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2 6 7 4 3 8 5 1 9
4 5 3 2 9 1 6 8 7
1 8 9 7 5 6 4 2 3
8 4 1 9 6 2 7 3 5
9 3 5 8 4 7 2 6 1
6 7 2 3 1 5 8 9 4
7 1 6 5 2 9 3 4 8
3 2 8 1 7 4 9 5 6
5 9 4 6 8 3 1 7 2
6=>(1,2) | 9=>(3,3) | 1=>(2,6) | 2=>(3,8) | 6=>(5,8) | 2=>(8,2) | 6=>(8,9) | 7=>(3,4) |

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

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

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

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

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

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