Answers.Body: <p>In the specific case you give, both the move that allowed the mate in one and the move that failed to take it are clear ??'s: they're both absoutely terrible moves.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-08-11T07:37:38.480Z
Answers.Text: I don't fully agree with you. I think that the opponent's move doesn't deserve ??. It is too harsh. What if he won a pawn or something similar?
Answers.UserDisplayName: MikhailTal
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-08-11T07:56:56.723Z
Answers.Text: "Forget it. Checkmate wins the game." - Nigel Short.
Answers.UserDisplayName: David Richerby
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-08-10T22:50:34.773Z
Answers.LastActivityDate: 2014-08-10T22:50:34.773Z
Answers.UserDisplayName: David Richerby
Answers.Body: <p>A blunder is a blunder regardless of the opponent's response. Allowing mate in one in a playable position always deserves a ?? if you are adding annotations to a game.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-08-11T07:36:23.830Z
Answers.Text: What about my opponent's move. How should that be marked. That is my question.
Answers.UserDisplayName: MikhailTal
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-08-11T11:41:03.007Z
Answers.Text: I would agree with David Richerby, that the opponent deserves a ?? as well. Missing a mate in one is not excusable for either side.
Answers.UserDisplayName: Cleveland
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-08-10T21:10:31.963Z
Answers.LastActivityDate: 2014-08-10T21:10:31.963Z
Answers.UserDisplayName: Cleveland
Body: <p>Let us say that I commit a blunder in a chess game. One that is deserving for a ??, a mate in one let us say. My opponent misses it. With what mark should the move be written in a pgn? Left markless, or with a ?!. Or perhaps with something else?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-08-19T20:55:07.610Z
Comments.Text: If the blunder allows a mate in 1 instead of a mate in 4, it probably doesn't really deserve a "??".  A double question mark is usually reserved for a move that completely reverses the evaluation of the position (i.e. equal to lost or winning to equal).
Comments.UserDisplayName: Andrew
Tags: <pgn><notation><terminology><blunder>
Title: On blunders in PGNs
ThreadText: # On blunders in PGNs
  
  (Asked by: username_0 on 2014-08-10)
  
  Let us say that I commit a blunder in a chess game. One that is deserving for a ??, a mate in one let us say. My opponent misses it. With what mark should the move be written in a pgn? Left markless, or with a ?!. Or perhaps with something else?
  
  **Tags:** pgn, notation, terminology, blunder
  
  > **Comments:**
  > **username_1**: If the blunder allows a mate in 1 instead of a mate in 4, it probably doesn't really deserve a "??".  A double question mark is usually reserved for a move that completely reverses the evaluation of the position (i.e. equal to lost or winning to equal).  
  
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  ## 2 answers
  
  ### Answer by username_2 on 2014-08-10. Score: 3 | Accepted answer
  
  In the specific case you give, both the move that allowed the mate in one and the move that failed to take it are clear ??'s: they're both absoutely terrible moves.
  
  > **Comments:**
  > **username_0**: I don't fully agree with you. I think that the opponent's move doesn't deserve ??. It is too harsh. What if he won a pawn or something similar?  
  > **username_2**: "Forget it. Checkmate wins the game." - Nigel Short.  
  
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  ### Answer by username_3 on 2014-08-10. Score: 0
  
  A blunder is a blunder regardless of the opponent's response. Allowing mate in one in a playable position always deserves a ?? if you are adding annotations to a game.
  
  > **Comments:**
  > **username_0**: What about my opponent's move. How should that be marked. That is my question.  
  > **username_3**: I would agree with username_2, that the opponent deserves a ?? as well. Missing a mate in one is not excusable for either side.  
  
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