4 2 6 3
8 2 5 9
5 4
7 9 6
5 7
8 5 3
1 2
8 1 3 7
9 8 4 3
26-08-2018.......medium 26-08-2018
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4 2 9 5 6 8 7 3 1
6 8 3 7 2 1 4 5 9
7 5 1 3 9 4 2 6 8
1 3 7 9 4 6 5 8 2
5 4 8 2 1 3 6 9 7
9 6 2 8 7 5 3 1 4
3 7 4 1 5 9 8 2 6
8 1 6 4 3 2 9 7 5
2 9 5 6 8 7 1 4 3
5=>(1,4) | 4=>(2,7) | 7=>(7,2) | 8=>(1,6) | 8=>(5,3) | 5=>(7,5) | 7=>(6,5) | 1=>(9,7) |

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

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

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

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

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

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