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

[Hirokaz ONODA]

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,
Hiro


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