8 4 1 6
2 9
3 9 2 4
7 3 2 8
1 7
4 9 7 6
7 1 5 2
5 3
5 1 8 4
19-06-2018.......medium 19-06-2018
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2 8 5 4 3 1 7 6 9
4 7 6 2 5 9 3 1 8
3 1 9 7 8 6 2 5 4
5 6 7 3 4 2 8 9 1
1 9 3 8 6 5 4 2 7
8 2 4 9 1 7 6 3 5
7 3 1 6 9 4 5 8 2
9 4 8 5 2 3 1 7 6
6 5 2 1 7 8 9 4 3
4=>(4,5) | 7=>(3,4) | 6=>(7,4) | 4=>(5,7) | 8=>(7,8) | 7=>(1,7) | 7=>(2,2) | 8=>(3,5) |

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

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

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

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

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

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