[Retros] Three SPG's from Paul Monsky

Noam Elkies elkies at math.harvard.edu
Wed Jan 16 20:20:07 EST 2008

>> The interest here would be the combination of cross-captures

>> with other elements:

> Sure, but what elements ? that is the question !

>> in the 13.0 mover, both cross-captures are of promoted pieces;

> This is not enough, as shown in the above "minimal" game,

> composed in 2 minutes :

Well I wrote from the start that I would not be surprised to learn
that this has been shown already. (Though it was still a good
solving puzzle, and it is a bit harder to motivate a B-promotion than
a N-promotion.) Do you also have an example combining cross-captures
with two impostor rooks?


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