The New Sudoku Players' Forum

[Neunmalneun]

Carcul: I did not ask if the deduction was correct. As you pointed out I knew that. What I wanted to discuss is the question if this deduction is only possible using the concept of an Almost X-Wing or if some other techniques lead to the same elimination. RW gave a convincing answer (for the first example) though I am not sure if a finned swordfish is an easier step than an Almost X-Wing.

[Mike Barker]

A finned swordfish works in the second example as well

Code: Select all

+--------------------+--------------------+--------------------+
|  248    246   678  |    5     3    278  |   4678    9     1  |
|    9   1235* 1578* |    6     4   1278* |   3578  378   358  |
|  148  13456  5678  |  178   178      9  | 345678    2  3458  |
+--------------------+--------------------+--------------------+
| 1258#   125*    4  |    3     6     18* |  25789   78  2589  |
|    7   25-1  58-1  | 1289  1289      4  |   2358   38     6  |
|    6      9     3  |  278   278      5  |      1    4    28  |
+--------------------+--------------------+--------------------+
|    3      8    16* |    4    29     16* |     29    5     7  |
|   14   1467     2  | 1789     5  13678  |   3489   16  3489  |
|  145  14567     9  | 1278  1278  13678  |   2348   16  2348  |
+--------------------+--------------------+--------------------+

[Carcul]

Carcul: I did not ask if the deduction was correct.

Ok, I misunderstood you.

Carcul