7 4 6 9
5 8 7
3 8 6 7 4
3 4 9 1
1 5 7 6
5 2 9 7
2 3 5 6 8
5 8 6
6 2 9 7
07-04-2016.......easy 07-04-2016
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7 4 5 1 3 6 8 2 9
2 1 9 4 5 8 6 7 3
3 8 6 7 2 9 1 4 5
8 7 3 6 4 2 9 5 1
1 9 4 5 8 7 2 3 6
5 6 2 3 9 1 7 8 4
4 2 1 9 7 3 5 6 8
9 5 7 8 6 4 3 1 2
6 3 8 2 1 5 4 9 7
2=>(2,1) | 8=>(4,1) | 5=>(1,3) | 4=>(2,4) | 6=>(2,7) | 3=>(9,2) | 9=>(5,2) | 6=>(6,2) |

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

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

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

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

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