[Retros] Small Update of the Retro Corner

[Otto Janko]

Small Update of the Retro Corner:

a) Announcement: The Problemist Supplement - Proof Game Tourney 

b) Update of Thomas Volet's article "An Introduction to Retroanalytic
Inference in Chess Composition"

Best Regards,

- Otto Janko [mailto:otto at janko.at] [http://www.janko.at]
-- Those who desire to give up freedom in order to gain security, 
- will not have, nor do they deserve, either one. [Benjamin Franklin]