[Retros] Pawn to-the-8th, single checkmates, simplified ed.

Hirokaz ONODA glkoon at yahoo.co.jp
Fri Dec 15 02:03:46 EST 2006

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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