5 7 6 4
6 2 3 4 9 5
1 8
2 6
8 3 2
8 7
9 3
5 8 4 3 1 6
4 1 7 9
29-04-2014.......medium 29-04-2014
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5 9 7 1 8 2 6 3 4
8 6 2 3 7 4 9 5 1
1 4 3 5 6 9 2 7 8
3 7 9 2 4 6 8 1 5
6 8 5 9 3 1 4 2 7
2 1 4 8 5 7 3 9 6
9 2 6 7 1 8 5 4 3
7 5 8 4 9 3 1 6 2
4 3 1 6 2 5 7 8 9
8=>(2,1) | 6=>(7,3) | 2=>(3,7) | 3=>(9,2) | 9=>(8,5) | 2=>(8,9) | 8=>(9,8) | 5=>(7,7) |

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

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

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

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

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

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