[Retros] Ke1 - g1 (Are the King and the Rook....?)

[Rol, Guus]

You have a point there, Joost. My understanding of the discussion with
Dirk is that we talked about those compositions presented in a
"retro-context" like the Retro-column in Probleemblad (a necessary
assumption anyway for various retro-conventions). There was unclarity
about the retro-rules for such compositions. Was the diagram considered
to have come from a legal game with standard chess rules or with fairy
rules? Apparently, the second option is becoming more favorite today. A
good example is the one you take from Kuhlmann's comment (which I
haven't read). Without a concept of how fairy pieces arise from the PAS,
there is no way to perform retro-analysis on fairy pieces. For myself, I
have always wondered what the retro-analysis of series-movers should
look like. What are the retro-rules for this genre and why?

Guus Rol.


-----Oorspronkelijk bericht-----
Van: retros-bounces at janko.at [mailto:retros-bounces at janko.at] Namens
Joost de Heer
Verzonden: woensdag 6 februari 2008 12:30
Aan: The Retrograde Analysis Mailing List
Onderwerp: Re: [Retros] Ke1 - g1 (Are the King and the Rook....?)


> Arguably, all FIDE rules and conventions apply (forwardly and

> backwardly) to that diagram, as long as they are not clearly 

> incompatible with the rules of the fairy variant.


I always understood that retro analysis in fairy compositions is not
applied, unless explicitly stated. E.g. an anticirce composition with a
black pawn on c2 and a white one on c3 is an accepted position, unless
the stipulation requires retro analysis (e.g. 'Last 10 moves').

Did anyone see Jorg Kuhlmann's award for fairies in Die Schwalbe? He
mentions legality for fairy compositions, and quite strictly applied the
'fairy pieces are promoted pawns, so a composition with (sum fairy
pieces 
+ sum pawns) > 8 is illegal' rule. (IIRC he used something like
pseudo-illegal, but I don't have the award with me atm, I will check it
tonight).

Joost
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