HoDoKu Solving Technique Index: Example for "Locked Candidates Type 2 (Claiming)"

Solving Technique Example

Original sudoku:

.62..8..19.......6.......8.478...........9.73......42...5..1.....768.3......327.8

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

:0101:4:+762..8..19+8......6+1+5.....8+7478..+3+1+6+9+5+2+6..9+873+3+1+9+8..42+5+8+35..1+6+9+2+2+9768+53+1+4+6+4+1+9327+58::414 415 424 425 434 435:

The following representation can be pasted in most Sudoku programs:

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

| 7  6  2  | 345     459    8  | 59  34  1 |

| 9  8  34 | 123457  12457  47 | 25  34  6 |

| 1  5  34 | 234     2469   46 | 29  8   7 |

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

| 4  7  8  | 25      25     3  | 1   6   9 |

| 5  2  6  | 14      14     9  | 8   7   3 |

| 3  1  9  | 8       67     67 | 4   2   5 |

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

| 8  3  5  | 47      47     1  | 6   9   2 |

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

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

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

Representation of the step:

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

| 7  6  2  | 3-45     -459      8  | 59  34  1 |

| 9  8  34 | 123-457   12-457  *47 | 25  34  6 |

| 1  5  34 | 23-4      2-469   *46 | 29  8   7 |

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

| 4  7  8  | 25        25       3  | 1   6   9 |

| 5  2  6  | 14        14       9  | 8   7   3 |

| 3  1  9  | 8         67       67 | 4   2   5 |

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

| 8  3  5  | 47        47       1  | 6   9   2 |

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

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

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



Locked Candidates Type 2 (Claiming): 4 in c6 => r1c45,r2c45,r3c45<>4