8 3 5 2
9 8 7 1
5 9 7
8 4
4 6 5 3
1 2
4 5 8
8 2 4 5
9 7 3 6
12-03-2011.......medium 12-03-2011
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7 8 4 3 1 5 6 2 9
9 3 6 8 2 7 5 4 1
1 5 2 4 9 6 3 7 8
5 2 8 6 3 9 4 1 7
4 6 9 1 7 2 8 5 3
3 7 1 5 4 8 2 9 6
6 4 3 9 5 1 7 8 2
8 1 7 2 6 4 9 3 5
2 9 5 7 8 3 1 6 4
5=>(2,7) | 1=>(8,2) | 5=>(9,3) | 9=>(5,3) | 9=>(6,8) | 1=>(9,7) | 4=>(2,8) | 8=>(9,5) |

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

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

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

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

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

5=>(4,1) | 6=>(4,4) | 5=>(6,4) |