HoDoKu Solving Technique Index: Example for "Locked Candidates Type 1 (Pointing)"

Solving Technique Example

Original sudoku:

984.........5...4.........2..6.972....3..2..........1...5.6...34.7.5189..3...97..

Use the following line if you want to load the sudoku in HoDoKu:

:0100:5:984........+25...4...+1+9.+4..2..6.972+3...3+6.2...+2.+9.+3+5+61.+1+95+76+8+4+234+27+35189+6+63+8..97+5+1::537:

The following representation can be pasted in most Sudoku programs:

.--------------.--------------.-----------------.

| 9    8     4 | 12   127  36 | 135  67   57    |

| 37   67    2 | 5    178  36 | 139  4    789   |

| 357  567   1 | 9    78   4  | 35   678  2     |

:--------------+--------------+-----------------:

| 58   145   6 | 148  9    7  | 2    3    458   |

| 578  1457  3 | 6    148  2  | 59   78   45789 |

| 2    47    9 | 48   3    5  | 6    1    478   |

:--------------+--------------+-----------------:

| 1    9     5 | 7    6    8  | 4    2    3     |

| 4    2     7 | 3    5    1  | 8    9    6     |

| 6    3     8 | 24   24   9  | 7    5    1     |

'--------------'--------------'-----------------'

Representation of the step:

.----------------.--------------.-----------------.

|  9     8     4 | 12   127  36 | 135  67   57    |

|  37    67    2 | 5    178  36 | 139  4    789   |

| *357  *567   1 | 9    78   4  | 3-5  678  2     |

:----------------+--------------+-----------------:

|  58    145   6 | 148  9    7  | 2    3    458   |

|  578   1457  3 | 6    148  2  | 59   78   45789 |

|  2     47    9 | 48   3    5  | 6    1    478   |

:----------------+--------------+-----------------:

|  1     9     5 | 7    6    8  | 4    2    3     |

|  4     2     7 | 3    5    1  | 8    9    6     |

|  6     3     8 | 24   24   9  | 7    5    1     |

'----------------'--------------'-----------------'



Locked Candidates Type 1 (Pointing): 5 in b1 => r3c7<>5