[Retros] Fastest mate? :-)

[andrew buchanan]

Great stuff!
For prior art the nearest is:https://pdb.dieschwalbe.de/search.jsp?expression=Probid%3D%27P0004856%27

However this has no retro logic, and there are several mates beyond the Valladao - arguably Noam’s non-retro representation is nicer as the flight squares forces only the three thematic solutions.
There is a typo in the second diagram, wPf5 should be on e6 I think.
Would be good to see the retro logic spelled out for the first one.
ThanksAndrew

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On Monday, June 12, 2023, 3:32 AM, Richard Stanley <rstan at math.mit.edu> wrote:


> What's the fastest mate? :-)

Surely the world's fastest Valladao!

Richard
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