- Code: Select all
8 | 1 | 4 || 9 | 2 | #36 || 3**6 | 5 | 7
-------+-------+-------||-------+-------+-------||-------+-------+-------
27 | 236 | 3567 || 58 | 4 | 35678 || 9 | 236 | 1
-------+-------+-------||-------+-------+-------||-------+-------+-------
9 | 236 | 3567 || 1 | 367 | 3567 || 8 | 4 | 236
=======================||=======================||=======================
3 | 4 | 1 || 58 | 67 | 58 || 267 | 2679 | 269
-------+-------+-------||-------+-------+-------||-------+-------+-------
6 | 5 | 79 || 2 | 379 | 4 || 3**7 | 1 | 8
-------+-------+-------||-------+-------+-------||-------+-------+-------
27 | 29 | 8 || 3*67 | 1 | 3*679 || 5 | 3*67 | 4
=======================||=======================||=======================
4 | 8 | 369 || 367 | 3679 | 1 ||23**67 | 23679 | 5
-------+-------+-------||-------+-------+-------||-------+-------+-------
5 | 369 | 2 || 4 | 8 | 3-679 || 1 | 367 | #36
-------+-------+-------||-------+-------+-------||-------+-------+-------
1 | 7 | 369 || #36 | 5 | 2 || 4 | 8 | 369
It seems the latter elimination, regardless of name, is valid in the first grid, perhaps seen as at least one of two w wings, much like 2 ALS with a restricted common:
[(6=3)r1c6-(3)r6c6=*(3)r4c6-(3=6)r9c4]=(3*)r6c8-(3**)r5c7=[(6=3)r1c6-(3)r1c7=**(3)r7c7-(3=6)r8c9] => r8c6<>6
Naming patterns is a convenience so that we can communicate with each other. If one makes the pattern names too general, then the communication gets fuzzy. If one makes the pattern names too specific, there are too many names. I think this problem (nomenclature) is common in language, and generally not resolvable to the satisfaction of everyone.
More interesting to me is that this specific pattern, if one were to label it a pattern, still exists regardless of the elimination of any arbitrary (3)'s in r6 or c7, much like an ALS becoming a LS after eliminating a restricted common. The general pattern: linking known patterns with restricted commons is a common theme. Finding them, much like finding naked locked sets, is often a function of understanding what is not required versus what is required to the pattern validity.
Naturally, extending patterns with any valid strong inference extension pattern is always a manner to further generlize a smaller pattern, thus a turbot extension of the three sis w wing is a natural extension of the base pattern. Naming the extensions - that is perhaps more difficult than finding and understanding them!
