user9096: Does anyone know the difference between the 3rd and 4th edition of "100 Endgames You Must Know"?  I just looked at the Table Of Contents and they are identical and random pages on Amazon look the same too. I would imagine there must be some new use of the new tablebases that were completed since 2012?

user825: I have the book on Chessable (popular site for reading chess books like this one):

https://www.chessable.com/endgame-book/100-endgames-you-must-know/5193/


The difference in edition come from improved annotations and error checking. That's common for all books (chess or not). If you already have the 3rd edition, there's no point to get the newer edition.
Please note the edition is not specified in the screenshot because it's always the latest edition. I'd recommend to get an ebook version (e.g. Chessable or other publishers). New In Chess updates their ebooks for free, you will get a free update when they release the 5th, 6th edition etc.

user4362: De la Villa's "100 Endgames you must know", though apparently a good book seems to have been plagued by an abundance of typos and mistakes as detailed in this blogpost.
So although the culprit in this case has been the 2nd edition, maybe it does make sense to go for the latest edition. Here you can look at the errata page which presumably contains errors that have now been corrected, although as I mentioned some of these corrections probably already happened in the third edition. 

9096: <p>Does anyone know the difference between the 3rd and 4th edition of "100 Endgames You Must Know"?  I just looked at the Table Of Contents and they are identical and random pages on Amazon look the same too. I would imagine there must be some new use of the new tablebases that were completed since 2012?</p>
 825: <p>I have the book on Chessable (popular site for reading chess books like this one):</p>

<blockquote>
  <p><a href="https://www.chessable.com/endgame-book/100-endgames-you-must-know/5193/" rel="nofollow noreferrer">https://www.chessable.com/endgame-book/100-endgames-you-must-know/5193/</a></p>
</blockquote>

<p><a href="https://i.stack.imgur.com/jTMne.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jTMne.png" alt="enter image description here"></a></p>

<p>The difference in edition come from improved annotations and error checking. That's common for all books (chess or not). If you already have the 3rd edition, there's no point to get the newer edition.</p>

<p>Please note the edition is not specified in the screenshot because it's always the latest edition. I'd recommend to get an ebook version (e.g. Chessable or other publishers). New In Chess updates their ebooks for free, you will get a free update when they release the 5th, 6th edition etc.</p>
 4362: <p>De la Villa's "100 Endgames you must know", though apparently a good book seems to have been plagued by an abundance of typos and mistakes as <a href="http://streathambrixtonchess.blogspot.com.es/2012/08/sixty-memorable-annotations.html" rel="nofollow">detailed in this blogpost.</a></p>

<p>So although the culprit in this case has been the 2nd edition, maybe it does make sense to go for the latest edition. Here you can look at <a href="https://www.newinchess.com/support/?PageID=600" rel="nofollow">the errata page</a> which presumably contains errors that have now been corrected, although as I mentioned some of these corrections probably already happened in the third edition. </p>
