[Retros] Pawn to-the-8th, single checkmates, simplified ed.
andrew at anselan.com
Fri Dec 15 04:08:06 EST 2006
I wondered about this possibility.
PG in 6.5
is sound, but replace Rd8 with Q, and it falls apart.
The one that would impress me would have:
- exactly 2 distinct solutions in the Q twin
- no extraneous promoted pieces in either case
--- Hirokaz ONODA <glkoon at yahoo.co.jp> wrote:
> Hi Mario,
> > > (1-4') Queening is MUST(underpromotion is
> > insufficient)
> > Has somebody encountered the opposite situation:
> > Underpromotion is MUST, while queening leads to
> > a non-unique PG?
> Very interesting.
> I think there must be some games, or maybe a lot?
> I'd like to see those games.
> Amici Sumus,
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