Website founded by
Milan Velimirović
in 2006
0:07 UTC
| |
MatPlus.Net  Forum General A question aboute ’consequent helpmate’ (hc#) |
| |
|
|
|
|
You can only view this page!
| | Page: [Previous] [Next] 1 2 3 | | (41) Posted by Valery Liskovets [Friday, Jan 7, 2011 15:56] |
@Kevin,
Retro-genres RS, PRA and AP are controversial by their logical (ambiguous) nature regardless of formulations in the Codex. In particular, such is RS (retro-strategy), which has been admitted already since the Piran Codex, 1958. Nonetheless some experts shared, and go on to share, Dawson's opinion that this is "bad" logic (I'm not among them). Art. 16.3 "only" introduces PRA precisely and makes it unconditional. Incidentally, I'm one of the authors of the acting version of this Article adopted in Rio. Of course, it says nothing about fairy composition. So, among the "standard" widely recognized controversial genres, only AP remains conditional (what is unjust in my opinion; I put aside the more weird kind of AP dealing with the turn to move instead of e.p.).
I do not exclude absolutely possible paradoxical combinations of a kind of Consequent/Amnesia with PRA (say, in negative form: "attempt to forbid (by definition) the use of PRA", etc.). But I don't see such natural possibilities. Hidden subtler interactions, if any, are left for further research; you are welcome! My initial aim was more restricted: to introduce (and master) the "consequent" concept in the framework of ordinary helpmates and retros.
Some your ideas, particularly concerning additional fairy conditions, look promising. Unfortunately, I'm not knowledgeable in fairy chess (except for series helpmates and retro-volages). In general as a rule it is more productive to discuss new ideas and opportunities not scholastically but on appropriate illustrative examples.
| | | (42) Posted by Kevin Begley [Friday, Jan 7, 2011 18:22]; edited by Kevin Begley [11-01-07] |
Valery,
I agree with just about everything your post has to say... especially with respect to AP.
I suspect we might agree that the "weird" AP types -- proving who has the move -- probably merit their own (unique) name.
I always enjoy your consequent problems, and consider it to be a very good development (more retro-content is always welcome).
However, I would much prefer if fairy conditions (even the good ones!) were not classified in stipulation-form.
Someday, somebody will have to overhaul our poor classification system.
But, someday never comes (so long as we refuse to be somebody).
As for Artice 16.3... it seems to me this does far more than "introduce" pRA.
As written, your article makes pRA (and not AP) the official methodology to resolve cases of co-dependence, in orthodox problems.
Further, it requires than any "over-ride" of the pRA-convention (now the default orthodoxy) must be expressly stated.
Am I, somehow, misreading the intent of your article?
[And, if this is the orthodox convention to resolve co-dependence, it seems your fairy condition must address it (somehow).]
Finally, I appreciate your invitation to participate -- if I have any luck at all, I will take you up on this offer. :)
| | | (43) Posted by Valery Liskovets [Friday, Jan 7, 2011 20:17] |
@Kevin,
I think you understand Art.16.3 correctly (although in such subtle topics, minor rephrasing turns out non-equivalent sometimes).
I see no obligation for myself (and don't plan for the nearest future) to deepen or extend the theory of consequent helpmates. Instead, I'd be glad to see fruitful advances achieved by somebody else (in particular, in the form of selfmates, or with extra fairy conditions or, perhaps, combined with other retro-genres, etc.). For me, most attractive feature of the Consequent/Amnesia concept is its retro-like capability to make something legal/illegal in the course of the solution (somewhat similarly to RS and AP!). As for the theory, I value the investigation made by Andrew Buchanan and would like to see spectacular implementations of various types of amnesia.
| |
No more posts | Page: [Previous] [Next] 1 2 3
MatPlus.Net Forum General A question aboute ’consequent helpmate’ (hc#) |
|
|
|
ISC 2024
