[Retros] Fwd: Proof game promotion task

Noam Elkies elkies at math.harvard.edu
Sun May 9 21:52:51 EDT 2010

"Timothy Y. Chow" <tchow at alum.mit.edu> asks:

> [...] What is the most number of knights (or queens, or whatever)

> to appear in the set position of a proof game [with a unique solution]?

I suppose one could also ask to maximize pieces of the same kind and
a single color; e.g. shas anybody constructed a sound proof game ending
with 10 white Bishops on the board?


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