[Retros] pure Q/B ##'s, and a mirror

[Noam Elkies]

I wrote:


> It's hard enough to find any shorter game (not necessarily SPG)

> ending in a midboard mate; the best I can find is 4.5 moves long.


Sorry; that should have read "midboard *mirror* mate" --
that is, a mate in which the entire King's field is unoccupied.
In this context, "midboard" just means "away from the edge
of the board", so the field contains the maximum of 8 squares.

NDE