5 3 1 4
8 2
4 9 7
8 6 1
5 7 3 8 4 9
6 4 3 8 7
5 4 3
3 9 5 2
29-08-2014.......hard 29-08-2014
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2 7 6 8 5 3 9 1 4
1 8 9 4 2 6 5 7 3
3 5 4 9 1 7 6 2 8
7 9 8 5 6 4 2 3 1
4 3 1 2 9 8 7 6 5
6 2 5 7 3 1 8 4 9
9 1 2 6 4 5 3 8 7
5 4 7 3 8 2 1 9 6
8 6 3 1 7 9 4 5 2
8=>(1,4) | 8=>(9,1) | 5=>(3,2) | 6=>(2,6) | 8=>(3,9) | 9=>(5,5) | 5=>(7,6) | 4=>(9,7) |

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

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

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

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

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

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