In 1979, Nikita M. Plaksin published a reportedly fascinating article containing 50 problems all related to the 50 moves rule. Unfortunately I can't find it anywhere, the only links that I could find are old and broken.

If anyone has it, would you please share it with the community and not let it get lost to time?


Last night, to my suprise, my question over on Matplus about this question got an answer. There, a user by the name of Valery Liskovets provided provided a link to a PDF of the original article, which is has pictures of all of the pages.

Here is the link: http://www.janko.at/Retros/Articles/Plaksin-50x50-Problem-1979.pdf

You better get it before this link expires!

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    This answer deserves at least 50 upvotes :) thanks! – Arnaud Mortier Oct 9 '19 at 11:37

Hi Arnaud thanks for your question.

The problems themselves can all be found in pdb.dieschwalbe.de. Type K='50' AND A='Plaksin' AND S='Problem' AND YEAR='1979'. All 50 are there numbered, with solutions. If you are typing from a phone make sure that you select the correct single-quote character: the vertical one.

The query reveals that they were published in the now-defunct magazine Problem, but it does not give the article text. I suggest Arnaud that you send your request to the Retro Mailing List retros@janko.at. This will put you in touch with all the current retro greats who would probably love to hear from you.

If that doesn’t work then let me know and I will approach someone individually.

EDIT: the 50x50 article is now available at https://www.janko.at/Retros/Articles/index.htm in Russian but I guess that google translate will work - and the diagrams are the not important part.

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    Thank you very much! I will do this. – Arnaud Mortier Aug 26 '19 at 10:53
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    Note: for me, the string of keywords doesn't work as such, but K=50 AND A='Plaksin' AND S='Problem' AND YEAR=1979 does (although it will not output only stuff from 1979). – Arnaud Mortier Aug 27 '19 at 20:00
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    hi Arnaud - there was a tiny typo in the command sorry - the last quote sign ' had defaulted to apostrophe ’ . That’s easy to miss on phone - have fixed that in my earlier post. The year parameter must be included in quotes in order to be used. – Laska Aug 28 '19 at 2:47

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