Answers.Body: <p>This should not happen. If it does, it's a bug. If you ever see it happen, be sure to tell the devs.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-01-09T02:06:29.143Z
Answers.LastActivityDate: 2024-01-09T02:06:29.143Z
Answers.UserDisplayName: Allure
Body: <p>When Stockfish gives an evaluation of, say #15, I have seen cases where this is pessimistic, and it subsequently revises its evaluation to say #9.</p>
  <p>Are there cases where it thinks it can mate in 15, but on further analysis it realises that it missed some ways where black can escape? Or it needs to revise its mate length wards?</p>
  
Tags: <checkmate><stockfish>
Title: Are Stockfish "Mate in X" counts ever over-optimistic?
ThreadText: # Are Stockfish "Mate in X" counts ever over-optimistic?
  
  (Asked by: username_0 on 2024-01-09)
  
  When Stockfish gives an evaluation of, say #15, I have seen cases where this is pessimistic, and it subsequently revises its evaluation to say #9.
  
  Are there cases where it thinks it can mate in 15, but on further analysis it realises that it missed some ways where black can escape? Or it needs to revise its mate length wards?
  
  **Tags:** checkmate, stockfish
  
  
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  ## 1 answers
  
  ### Answer by username_1 on 2024-01-09. Score: 4 | Accepted answer
  
  This should not happen. If it does, it's a bug. If you ever see it happen, be sure to tell the devs.
  
  
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