Answers.Body: <p>You can find a list of 8039 cooked, which is the official term that means incorrect, chess problems <a href="https://www.yacpdb.org/#search/ODg4ODg4ODgvLy8vLy8vLy8vQ29va2VkLCAvLy8xLzEvMS8w/1" rel="nofollow noreferrer">here</a> on the site Yet Another Chess Problem Database, often shortened to YACPDB. Another option is a list of 28670 problems on the <a href="https://pdb.dieschwalbe.de/search.jsp" rel="nofollow noreferrer">Die Schwalbe Chess Problem Database</a> that can be found by inputting 'COOKED' into the search bar.</p>
  <p>A famous example of an incorrect problem is this problem, which calls for White to play and checkmate Black in 8 moves.</p>
  <pre><code>[Title &quot;William Shinkman, St. Louis Globe-Democrat 1885, Mate In 8&quot;]
  [FEN &quot;k7/P7/P7/P7/P7/P7/P7/R3K3 w - - 0 1&quot;]
  </code></pre>
  <p>The intended solution was 1. 0-0-0!, White castling queenside, followed by 1... Kxa7 2. Rd8 Kxa6 3. Rd7 Kxa5 4. Rd6 Kxa4 5. Rd5 Kxa3 6. Rd4 Kxa2 7. Rd3 Ka1 8. Ra3#.</p>
  <p>But as it turned out,, 1. Kd2! also checkmates on the 8th move, thereby making the problem incorrect. An example of a possible continuation is as follows: 1. Kd2 Kxa7 2. Re1 Kxa6 3. Re7 Kxa5 4. Re6 Kxa4 5. Re5 Kxa3 6. Kc3 Kxa2 7. Re1 Ka3 8. Ra1#.</p>
  <p>On Tim Krabbe's website, there is an article entitled <a href="https://timkr.home.xs4all.nl/chess2/kuwait.htm" rel="nofollow noreferrer">&quot;The Kuwait Immortal,</a> that is linked in <a href="https://timkr.home.xs4all.nl/chess2/diary_7.htm" rel="nofollow noreferrer">Journal Entry #140.</a>
  Within, Krabbe published a correction of Shinkman's problem by Bader Al-Hajiri. The White king is now on g1, utilizing Chess960 to allow for a cook free long-range castling as the key.</p>
  <pre><code>[Title &quot;Bader Al-Hajiri After William Shinkman), Tim Krabbe's Website  9/19/2007, dedicated to Tim Krabbe, Mate In 8 Under Chess 960&quot;]
  [FEN &quot;k7/P7/P7/P7/P7/P7/P7/R5K1 w - - 0 1&quot;]
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-08T20:29:52.587Z
Answers.LastActivityDate: 2021-05-02T17:01:29.670Z
Answers.LastEditDate: 2021-05-02T17:01:29.670Z
Answers.UserDisplayName: Rewan Demontay
Body: <p>Surely it has happened, that a famous chess problem turned out to be incorrect because some move was overlooked. Maybe a chess engine found out that a classic problem was incorrect! Is there a collection of such problems? Please give an example as well, if you know any.</p>
  
Tags: <history><problems>
Title: List of famous, but incorrect, chess problems
ThreadText: # List of famous, but incorrect, chess problems
  
  (Asked by: username_0 on 2019-10-08)
  
  Surely it has happened, that a famous chess problem turned out to be incorrect because some move was overlooked. Maybe a chess engine found out that a classic problem was incorrect! Is there a collection of such problems? Please give an example as well, if you know any.
  
  **Tags:** history, problems
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2019-10-08. Score: 7 | Accepted answer
  
  You can find a list of 8039 cooked, which is the official term that means incorrect, chess problems here on the site Yet Another Chess Problem Database, often shortened to YACPDB. Another option is a list of 28670 problems on the Die Schwalbe Chess Problem Database that can be found by inputting 'COOKED' into the search bar.
  A famous example of an incorrect problem is this problem, which calls for White to play and checkmate Black in 8 moves.
  [Title "William Shinkman, St. Louis Globe-Democrat 1885, Mate In 8"]
  [FEN "k7/P7/P7/P7/P7/P7/P7/R3K3 w - - 0 1"]
  
  The intended solution was 1. 0-0-0!, White castling queenside, followed by 1... Kxa7 2. Rd8 Kxa6 3. Rd7 Kxa5 4. Rd6 Kxa4 5. Rd5 Kxa3 6. Rd4 Kxa2 7. Rd3 Ka1 8. Ra3#.
  But as it turned out,, 1. Kd2! also checkmates on the 8th move, thereby making the problem incorrect. An example of a possible continuation is as follows: 1. Kd2 Kxa7 2. Re1 Kxa6 3. Re7 Kxa5 4. Re6 Kxa4 5. Re5 Kxa3 6. Kc3 Kxa2 7. Re1 Ka3 8. Ra1#.
  On Tim Krabbe's website, there is an article entitled "The Kuwait Immortal, that is linked in Journal Entry #140.
  Within, Krabbe published a correction of Shinkman's problem by Bader Al-Hajiri. The White king is now on g1, utilizing Chess960 to allow for a cook free long-range castling as the key.
  [Title "Bader Al-Hajiri After William Shinkman), Tim Krabbe's Website  9/19/2007, dedicated to Tim Krabbe, Mate In 8 Under Chess 960"]
  [FEN "k7/P7/P7/P7/P7/P7/P7/R5K1 w - - 0 1"]
  
  
  ---
  
  