5 7 8 9
1 9 3 5 7 6
3 1
8 4
2 5 9
9 7
9 8
5 3 7 2 9 4
1 4 3 7
05-10-2020.......medium 05-10-2020
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5 4 7 2 6 1 8 3 9
2 1 9 3 8 5 7 6 4
3 8 6 4 7 9 2 5 1
6 9 5 8 3 4 1 7 2
7 2 8 1 5 6 4 9 3
4 3 1 9 2 7 6 8 5
9 7 2 6 4 3 5 1 8
8 5 3 7 1 2 9 4 6
1 6 4 5 9 8 3 2 7
3=>(1,8) | 2=>(2,1) | 9=>(4,2) | 7=>(3,5) | 7=>(5,1) | 7=>(4,8) | 8=>(6,8) | 7=>(7,2) |

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

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

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

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

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

2=>(6,5) | 5=>(6,9) |