[Retros] Retrograde analysis in other forms

[Noam Elkies]

"Mario Richter" <mri_two at t-online.de> writes:

[I wrote:]


> > I don't see any evidence that the wRa1 is

> > needed for some other role.  Are we told something else about

> > the position that would eliminate that possibility?



> Yes - the game was played "at the odds of queen's rook",

> so there was no wRa1 at the beginning of the game, or as

> the official solution puts it: "the white Q R was off the

> board before the game began".


I see, thanks.  I suppose a Rook-odds player would be rather
unlikely to find Black's winning combination, then...

NDE