7 6 2 8
8 2 4 9
5 8 7 4
2 9 8 5
1 6 5 9
7 9 4 1
3 9 4 7
9 2 3 5
2 5 7 1
02-02-2018.......easy 02-02-2018
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7 4 1 5 6 9 3 2 8
8 2 6 4 1 3 5 9 7
9 3 5 8 2 7 4 1 6
3 6 2 7 9 1 8 5 4
1 8 4 6 3 5 2 7 9
5 7 9 2 4 8 1 6 3
6 1 3 9 5 4 7 8 2
4 9 7 1 8 2 6 3 5
2 5 8 3 7 6 9 4 1
9=>(1,6) | 5=>(6,1) | 6=>(7,1) | 9=>(3,1) | 7=>(2,9) | 2=>(3,5) | 7=>(8,3) | 1=>(3,8) |

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

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

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

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

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