7 2 1 3
6 1
9 5 4 7
5 4 3 8
2 7
3 7 2 1
2 1 6 4
9 5
8 4 3 2
09-04-2014.......medium 09-04-2014
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5 7 8 2 6 1 9 3 4
3 4 6 9 7 8 1 5 2
1 9 2 5 3 4 6 7 8
9 5 4 7 1 2 3 8 6
2 6 1 3 8 5 4 9 7
8 3 7 6 4 9 2 1 5
7 2 3 1 5 6 8 4 9
4 1 9 8 2 7 5 6 3
6 8 5 4 9 3 7 2 1
2=>(3,3) | 4=>(2,2) | 2=>(2,9) | 6=>(8,8) | 4=>(8,1) | 1=>(3,1) | 6=>(5,2) | 1=>(8,2) |

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

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

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

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

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

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