2 6 8 5 4
5 7 8
2 6
3 8 9
7 2
1 4 6
7 4
5 1 4
1 8 3 9 5
10-04-2017.......medium 10-04-2017
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1 2 6 9 8 5 4 7 3
3 5 9 4 1 7 2 6 8
4 8 7 2 6 3 5 1 9
2 7 3 6 4 1 8 9 5
8 6 5 7 9 2 1 3 4
9 1 4 3 5 8 6 2 7
6 9 2 5 7 4 3 8 1
5 3 8 1 2 9 7 4 6
7 4 1 8 3 6 9 5 2
9=>(2,3) | 6=>(2,8) | 5=>(5,3) | 2=>(8,5) | 8=>(6,6) | 6=>(9,6) | 5=>(7,4) | 8=>(7,8) |

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

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

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

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

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

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