user18786: 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?

user15543: Last night, to my surprise, my reasking of this question over on the Matplus.net forums about received an; answer. There, a user by the name of Valery Liskovets provided a link to a PDF of the original article, which has pictures of all of the pages.
Here is the link: http://www.janko.at/Retros/Articles/Plaksin-50x50-Problem-1979.pdf

user8201: 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.

18786: <p>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.</p>

<p>If anyone has it, would you please share it with the community and not let it get lost to time?</p>
 15543: <p>Last night, to my surprise, my reasking of this question over on the <a href="http://www.matplus.net/start.php?px=1570619082&amp;app=forum&amp;act=posts&amp;fid=gen&amp;tid=2341&amp;pid=18003#n18003" rel="nofollow noreferrer">Matplus.net forums</a> about received an; answer. There, a user by the name of Valery Liskovets provided a link to a PDF of the original article, which has pictures of all of the pages.</p>
<p>Here is the link: <a href="http://www.janko.at/Retros/Articles/Plaksin-50x50-Problem-1979.pdf" rel="nofollow noreferrer">http://www.janko.at/Retros/Articles/Plaksin-50x50-Problem-1979.pdf</a></p>
 8201: <p>Hi Arnaud thanks for your question.</p>

<p>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.</p>

<p>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.</p>

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

<p>EDIT: the 50x50 article is now available at <a href="https://www.janko.at/Retros/Articles/index.htm" rel="nofollow noreferrer">https://www.janko.at/Retros/Articles/index.htm</a> in Russian but I guess that google translate will work - and the diagrams are the not important part.</p>
