[Retros] Happy New Year!

[Andrew Buchanan]

I have posted all the previous ones of this kind (mostly by Noam) in PDB,
as:
http://www.softdecc.com/pdb/search.jsp?expression=k=%22path:y%22

Happy New Year to you all!
Andrew.

-----Original Message-----
From: retros-bounces at janko.at [mailto:retros-bounces at janko.at] On Behalf Of
Noam Elkies
Sent: 01 January 2013 09:56
To: retros at janko.at
Cc: rstan at math.mit.edu; kwedlist at math.harvard.edu; kahn at math.brown.edu;
esmeyer99 at gmail.com; claraschan at gmail.com
Subject: [Retros] Happy New Year!

How many legal games reach this position after White's 7th move?

www.janko.at/Retros/d.php?ff=rnb1kbr1/pppp1npp/5q2/4pp2/4BPP1/5NK1/PPPPP2P/R
NBQ3R

(Hint: OEIS sequence A000111 <http://oeis.org/A000111> may help)


:-)

--NDE
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