![]() It's not ideal, but that would give us two logical hierarchies: Based on that discussion I think the simplest fix would be to replace "Turbot Fish" with "Turbot Crane" to avoid the worst ambiguity (or else use something else for the family name, but I think that's more difficult). Unfortunately it's not possible to fix the mess at this point, but I think we should do something at least. Here's more on my thoughts on the matter. Unfortunately "ER" was already used and named before Turbot Fishes, which I guess messed up the naming. It also means that the more logical name for ER would be "Grouped Turbot Fish". The standard name would be "Turbot Fish" but that's obviously ambiguous as well, because it's also the family name. ![]() So what is the corresponding pattern with a non-grouped box-based strong link? That's another annoying one. Furthermore, it's also less than clear whether ERs with just two candidates in the box-link are considered actual ERs or not, but I would prefer not so that ER would only mean a pattern with a grouped box-based strong link. ![]() At least some people (StrmCkr, rjamil) use "ERI" for the box-link only, which avoids some of the ambiguity. Sometimes "ER" is used like you just did, but the complete pattern has actually two strong links (like all Turbot Fishes): a box-based and a line-based one. "Empty Rectangle" is actually the most annoying pattern name I know because it has so many levels of ambiguity (even more than "Unique Rectangle" which is never clear whether it means just the deadly pattern or a solving pattern with the included guardians). Tarek Posts: 3761 Joined: 05 January 2006Īdding to the strength in location options is the Empty rectangle (which can be viewed as a strong link within a box). I'm looking at hopefully programming these into Sukaku explainer in the near future as "Easier to spot" techniques. I know that using so many terms (as SteveK mentions) is moot, but in a sudoku helper it may be helpful. Adding to the strength in location options is the Empty rectangle (which can be viewed as a strong link within a box). Just a note that Sukaku explainer supports both XY/XYZ wing and L1-wing (Colouring) under the name of "3 Strong links". (Note that I've replaced "candidates" with "digits" and added the corresponding wing-names and strong-link configurations.) 3 strengths in location, 3 digits : 元-Wing : LLL 3 strengths in location, 2 digits : L2-Wing : LLLĨ. 3 strengths in location, 1 digit : X-Chain (L1-Wing) : LLLħ. 1 strong cell, 2 strengths in location, 3 total digits : H2-Wing : VLLĦ. 1 strong cell, 2 strengths in location, 2 total digits : M-Wing / S-Wing : VLL / LVLĥ. 2 strong cells, 1 strength in location, 3 total digits : H3-Wing : VVLĤ. 2 strong cells, 1 strength in location (house), 2 total digits : W-Wing : VLVģ. 3 strong cells, 3 total digits : Y-Wing / XYZ-Wing : VVV / VVĢ.
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