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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Tue Jan 10, 2012 11:23 pm Post subject: |
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Many people consider any 3-SIS chain to be a wing. Examples ...
| Code: | Y/XY-Wing: 3-SIS using bivalue(XY), bivalue(YZ), and bivalue(ZX).
W-Wing: 3-SIS using bivalue(XY), bilocation(Y), and bivalue(YX).
M-Wing: 3-SIS using bivalue(XY), bilocation(Y), and bilocation(X).
S-Wing: 3-SIS using bilocation(X), bivalue(XY), and bilocation(Y).
L-Wing: 3-SIS using bilocation(X), bilocation(Y), and bilocation(Z).
(note: Y==X or Y==Z is acceptable)
H1-Wing: same as L-Wing
H2-Wing: 3-SIS using bivalue(XY), bilocation(Y), and bilocation(Z).
H3-Wing: 3-SIS using bivalue(XY), bivalue(YZ), and bilocation(Z).
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JC's wing is an H2-Wing. The important thing to remember is that not all wings utilize pincer values like the Y/XY-Wing, W-Wing, and M-Wing -- e.g., S-Wing, L-Wing, and Hn-Wings.
Regards, Danny
[Thanks to ronk for reminding me of the recent discussion and its link.]
Last edited by daj95376 on Wed Jan 11, 2012 5:06 pm; edited 1 time in total |
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ronk
Joined: 07 May 2006
Posts: 398
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| Posted: Wed Jan 11, 2012 1:06 am Post subject: |
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| daj95376 wrote: | JC's wing: 3-SIS using bivalue(XY), bilocation(Y), and bilocation(Z).
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However, JC's wing does not have a name ... and neither do other combinations that I'm sure he's capable of creating. |
As here, this pattern is an h-wing ... for hybrid wing.
Beyond your list, there is only one more useful wing (with native SIS), and it's also a hybrid wing. There's actually a second, but it has an embedded x-wing, so should remain dormant IMO. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Wed Jan 11, 2012 5:07 pm Post subject: |
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| I've updated my notes and previous post! Hopefully, I'll remember!!! |
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