8 2 4 9
8 4 5 7
2 7
4 1 5
5 6 9 3 7
9
3 6
4 1 2 5
8 4 3
08-10-2011.......hard 08-10-2011
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6 7 3 8 5 2 1 4 9
8 4 5 9 6 1 2 7 3
9 2 1 3 7 4 6 5 8
7 9 4 6 1 3 8 2 5
5 6 2 4 9 8 3 1 7
1 3 8 5 2 7 9 6 4
3 5 7 1 8 6 4 9 2
4 1 9 2 3 5 7 8 6
2 8 6 7 4 9 5 3 1
5=>(7,2) | 4=>(5,4) | 2=>(6,5) | 8=>(7,5) | 4=>(6,9) | 4=>(7,7) | 3=>(8,5) | 5=>(9,7) |

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

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

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

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

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

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