Answers.Body: <p>Perhaps worth starting by explaining for the benefit of the majority of chess fans who have no interest in computer chess tournaments that a &quot;game of SuFi 19&quot; is not some new chess variant. &quot;SuFi&quot; stands for &quot;Super Final&quot; and &quot;SuFi 19&quot; is the 2019 computer chess super final tournament.</p>
  <blockquote>
  <p>Is Stockfish 11 SuFi 19 still fallible?</p>
  </blockquote>
  <p>It's also worth reminding ourselves of the meaning of the word &quot;fallible&quot; and its opposite, &quot;infallible&quot;.</p>
  <p>&quot;Infallible&quot; means &quot;never makes a mistake&quot; and &quot;fallible&quot; means &quot;makes mistakes&quot;.</p>
  <p>We are still a very long way away from the day that chess will be solved and so are still a long way away from the day that a chess engine is infallible. Until then all chess engines are fallible. In particular Stockfish 11 is fallible.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-10-14T19:47:50.980Z
Answers.LastActivityDate: 2020-10-14T19:47:50.980Z
Answers.UserDisplayName: Brian Towers
Body: <p>In a Game of SuFi 19 , a Czech Benoni, Stockfish 11 as White could have forced , on move 28 , a line that forced an eight piece endgame on move 59. White would have had Queen , Knight and two advanced pawns vs Queen and Rook . The line was suggested by Stockfish own PV on move 27 , a plan that later abandoned for a small centipawn difference. In the game Stockfish was pressing hard in a pawn up endgame , but cannot overcame the stubborn defense by Leela zero ( at least in that game) and the game ended in a draw. Since I have extensively analyzed the eight piece endgame described above with Houdini 6.02 at d= 38/128 and concluded that it was a win, it should be concluded that Stockfish 11 took the wrong path on move 28. The game was a Czech Benoni defense, and , to be honest , is the only mistake by Stockfish 11 in the current SuFi when Stockfish was not in time trouble. Game 62 SuFi 19. At least even Stockfish 11 is not infallible!</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-10-14T00:15:44.020Z
Comments.Text: Did you expect it to be a perfect engine? Yeah, it's the best right now, but Deepmind can come back and crush stockfish
Comments.UserDisplayName: Yash Jain
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-10-14T00:50:25.063Z
Comments.Text: Note that SF12 is about 100 elo better than SF11
Comments.UserDisplayName: Oscar Smith
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-10-15T01:12:52.360Z
Comments.Text: Which game is it? Can you link?
Comments.UserDisplayName: Allure
Tags: <engines>
Title: Is Stockfish 11 SuFi 19 still fallible?
ThreadText: # Is Stockfish 11 SuFi 19 still fallible?
  
  (Asked by: username_0 on 2020-10-14)
  
  In a Game of SuFi 19 , a Czech Benoni, Stockfish 11 as White could have forced , on move 28 , a line that forced an eight piece endgame on move 59. White would have had Queen , Knight and two advanced pawns vs Queen and Rook . The line was suggested by Stockfish own PV on move 27 , a plan that later abandoned for a small centipawn difference. In the game Stockfish was pressing hard in a pawn up endgame , but cannot overcame the stubborn defense by Leela zero ( at least in that game) and the game ended in a draw. Since I have extensively analyzed the eight piece endgame described above with Houdini 6.02 at d= 38/128 and concluded that it was a win, it should be concluded that Stockfish 11 took the wrong path on move 28. The game was a Czech Benoni defense, and , to be honest , is the only mistake by Stockfish 11 in the current SuFi when Stockfish was not in time trouble. Game 62 SuFi 19. At least even Stockfish 11 is not infallible!
  
  **Tags:** engines
  
  > **Comments:**
  > **username_1**: Did you expect it to be a perfect engine? Yeah, it's the best right now, but Deepmind can come back and crush stockfish  
  > **username_2**: Note that SF12 is about 100 elo better than SF11  
  > **username_3**: Which game is it? Can you link?  
  
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  ## 1 answers
  
  ### Answer by username_4 on 2020-10-14. Score: 2
  
  Perhaps worth starting by explaining for the benefit of the majority of chess fans who have no interest in computer chess tournaments that a "game of SuFi 19" is not some new chess variant. "SuFi" stands for "Super Final" and "SuFi 19" is the 2019 computer chess super final tournament.
  
  > Is Stockfish 11 SuFi 19 still fallible?
  
  It's also worth reminding ourselves of the meaning of the word "fallible" and its opposite, "infallible".
  
  "Infallible" means "never makes a mistake" and "fallible" means "makes mistakes".
  
  We are still a very long way away from the day that chess will be solved and so are still a long way away from the day that a chess engine is infallible. Until then all chess engines are fallible. In particular Stockfish 11 is fallible.
  
  
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