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

Solving Technique Example

Original sudoku:

34...6.7..8....93...2....6.....1.....97...85......2...............6.8.9....923785

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

:0100:1:34...6.7..8....93...2.+3..6.....1.....97+3+6+485......2...............6.8.9....923785::171 172 173 177 178 179:

The following representation can be pasted in most Sudoku programs:

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

| 3         4       159     | 1258   589   6    | 125    7    128    |

| 1567      8       156     | 12457  457   157  | 9      3    124    |

| 1579      157     2       | 14578  3     1579 | 145    6    148    |

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

| 24568     2356    34568   | 578    1     579  | 2346   24   234679 |

| 12        9       7       | 3      6     4    | 8      5    12     |

| 14568     1356    134568  | 578    5789  2    | 1346   14   134679 |

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

| 12456789  123567  1345689 | 1457   457   157  | 12346  124  12346  |

| 12457     12357   1345    | 6      457   8    | 1234   9    1234   |

| 146       16      146     | 9      2     3    | 7      8    5      |

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

Representation of the step:

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

|  3          4        159     |  1258   589    6    |  125     7     128    |

|  1567       8        156     |  12457  457    157  |  9       3     124    |

|  1579       157      2       |  14578  3      1579 |  145     6     148    |

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

|  24568      2356     34568   |  578    1      579  |  2346    24    234679 |

|  12         9        7       |  3      6      4    |  8       5     12     |

|  14568      1356     134568  |  578    5789   2    |  1346    14    134679 |

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

| -12456789  -123567  -1345689 | *1457   457   *157  | -12346  -124  -12346  |

|  12457      12357    1345    |  6      457    8    |  1234    9     1234   |

|  146        16       146     |  9      2      3    |  7       8     5      |

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



Locked Candidates Type 1 (Pointing): 1 in b8 => r7c123789<>1