[Retros] The Case of the Mysterious Moves

[Gerd Wilts]

here is another try in 15 single moves:

1. [-*][-*] 2. [-+][-*] 3. [x+][x*] 4. [-*][-+] 5. [-*][x+] 6. [x*][-*] 7.
[x+][-*] 8. [-#]

Gerd



> -----Ursprungliche Nachricht-----

> Von: retros-bounces at janko.at [mailto:retros-bounces at janko.at]Im Auftrag

> von Gerd Wilts

> Gesendet: Montag, 2. November 2009 18:43

> An: retros at janko.at

> Betreff: Re: [Retros] The Case of the Mysterious Moves

>

>

> Dear Mario,

>

> yes, there is indeed a close similarity to the other existing types.

>

> Your CCC string in 7 single moves is correct. Here is another try in 9

> single moves:

>

> [-*][-*][-+][-*][x*][-*][x+][-*][-#]

>

> BTW, the additional use of castling (as in the first problem of

> the original

> post from Nikolai) makes the construction of such games much

> easier (because

> it allows to determine the first moves much more strictly).

>

> Best wishes,

>

> Gerd

>

> > -----Ursprungliche Nachricht-----

> > Von: retros-bounces at janko.at [mailto:retros-bounces at janko.at]Im Auftrag

> > von Mario Richter

> > Gesendet: Montag, 2. November 2009 12:51

> > An: The Retrograde Analysis Mailing List

> > Betreff: Re: [Retros] The Case of the Mysterious Moves

> >

> >

> > Dear Nikolai,

> >

> > this problem type is very similiar to some other types of chess problems

> > that were also discussed here in the RML, like "HAP-Chess" or

> > Eric Angelini's "Steno Chess".

> >

> > This new version could be named "CCC-Chess" (capture/castle/check).

> >

> > > I don't think these two need to be the last problems of their kind;

> > > but it seems now (as I suspected, and you confirmed) that it is

> > very hard

> > > indeed to create a completely determined game which does not

> > make use of castling.

> >

> > Using the following notation:

> > a single ply is surrounded by '[' and ']',

> > '-' means non-capture, 'x' means capture

> > '*' stands for a non-check giving move, '+' for a check-giving move

> > '#' stand for mate

> >

> > here is one simple CCC-string, that should be correct:

> >

> > [-*][-*][x*][-*][x*][-*][x#]

> >

> > Anybody outthere who can provide a longer, uniquely solvable CCC-String?

> >

> > Best,

> >

> >   mario

> >

> > _______________________________________________

> > Retros mailing list

> > Retros at janko.at

> > http://www.pairlist.net/mailman/listinfo/retros

> >

>

> _______________________________________________

> Retros mailing list

> Retros at janko.at

> http://www.pairlist.net/mailman/listinfo/retros

>