2 4 7 9
6 5 9 1
8 7
4 9 7 5 2
9 8 3 1 7
2 5
5 7 3 2
3 2 6 1
12-01-2021.......hard 12-01-2021
www.daily-sudoku-puzzle.com

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

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

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

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

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

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

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