[Retros] Ceriani Quartexes

[Николай Белухов]

 Dear retro-friends,
Here is one short file accumulating all the known problems demonstrating a fourfold implementation of the famous Ceriani-Frolkin theme. This being an extremely difficult task, there are only a few such problems, so I hope this collection would be of some value to retroanalysis fans.
The file also contains one brief introductory text (explaining the nature of the theme and a little of the history of the hunt for a Ceriani-Frolkin quartex) written by me and kindly supplied with additional notes by Andrey Frolkin himself.
As usual,
https://docs.google.com/fileview?id=0B84M-EsbAvopMTliNjY4N2MtZjc1OS00NGI4LTkyZWMtMTZkMmIxYmZkNDFl&hl=en
and
http://chessproblem.net/viewtopic.php?f=10&t=380
The chessproblems.net link is likely to come out broken again; if so, you could just remove the unnecessary "amp;" in the end or find the topic in the "Retroanalysis and Proof Games" section.
Best wishes,
Nikolai


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