9 8 5
7 5 2 9
3 7
6 8 4 1
4 1
4 2 6 3
8 2
1 6 7 3
4 1 6
22-01-2021.......hard 22-01-2021
www.daily-sudoku-puzzle.com

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

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

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

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

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

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

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