Answers.Body: <p>Well... Yes, it is still a thing, many top level games end in threefold repetition, but that is due to the perpetual check. So in a way, you can't draw a game by perpetual 'per se' but perpetual check can implicate threefold repetition occurring.</p>
  
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Answers.CreationDate: 2016-01-19T22:10:37.943Z
Answers.LastActivityDate: 2016-01-19T22:10:37.943Z
Answers.UserDisplayName: user11876
Answers.Body: <p>FIDE Laws of Chess do not recognize "perpetual check." They only recognize a case where the same position appears 3 times on the board. If it does, the player about to make the move that will cause it to appear for the 3rd time may claim a draw, but must do so <em>before</em> he makes his move. Once he makes his move, he no longer has any rights to claim a draw, because this can only be done while the player is still "on move".  Once he moves, his opponent is "on move".</p>
  
  <p>The term "Threefold Repetition" is widely used, but misleading. Many players take it to mean what it seems to say, that a <em>repetition</em> has occurred 3 times, i.e. the position occurred once (no repetition), then again (1st repetition), then once again (2nd repetition; draw claim already available), and then <em>one more time</em> (3rd <em>repetition</em>, but <em>4th occurrence of the position</em>; draw claim still available).  It's quite possible that 2 repetitions may occur, but the opponent may then vary <em>to avoid a draw claim</em>, in which case the 3rd repetition would <em>not</em>.  If this came about, the player who wanted to claim a draw <em>missed his chance</em>, and he won't get another.</p>
  
  <p>It pays to understand the rules, not just know what people call them.</p>
  
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Answers.CreationDate: 2016-10-09T00:57:28.317Z
Answers.LastActivityDate: 2016-10-09T00:57:28.317Z
Answers.UserDisplayName: jaxter
Answers.Body: <p>Perpetual check isn't a thing any more. But the idea is that one side demonstrates that they can keep putting the opponent's king in check, regardless of what the response is. Sooner or later it will turn into a threefold repetition or run afoul of the fifty move rule.</p>
  
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Answers.CreationDate: 2016-01-19T01:43:34.150Z
Answers.LastActivityDate: 2016-01-19T01:43:34.150Z
Answers.UserDisplayName: Pete Becker
Body: <p>I know that there is 6 types of draws including mutual agreement, stalemate, insufficient material, 3 move repetition and the fifty move rule, but I do not know what is perpetual check. </p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-19T02:12:40.573Z
Comments.Text: Perpetual check is not one of the types of draws.
Comments.UserDisplayName: limits
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-20T00:23:56.550Z
Comments.Text: not a type of draw?
Comments.UserDisplayName: Sam Dai
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-20T04:27:34.637Z
Comments.Text: Perpetual check can result in threefold repetition. However, in the rules, you cannot claim draw because of perpetual check, only because of threefold repetition.
Comments.UserDisplayName: limits
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-22T00:31:49.930Z
Comments.Text: Okay then it is threefold repititon.
Comments.UserDisplayName: Sam Dai
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-10-09T12:14:59.170Z
Comments.Text: Even if perpetual check isn't mentioned in the rules, it is still an important concept both in strategy and tactics.
Comments.UserDisplayName: Dag Oskar Madsen
Tags: <draw><check><perpetual>
Title: What is perpetual check?
ThreadText: # What is perpetual check?
  
  (Asked by: username_0 on 2016-01-18)
  
  I know that there is 6 types of draws including mutual agreement, stalemate, insufficient material, 3 move repetition and the fifty move rule, but I do not know what is perpetual check.
  
  **Tags:** draw, check, perpetual
  
  > **Comments:**
  > **username_1**: Perpetual check is not one of the types of draws.  
  > **username_0**: not a type of draw?  
  > **username_1**: Perpetual check can result in threefold repetition. However, in the rules, you cannot claim draw because of perpetual check, only because of threefold repetition.  
  > **username_0**: Okay then it is threefold repititon.  
  > **username_2**: Even if perpetual check isn't mentioned in the rules, it is still an important concept both in strategy and tactics.  
  
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  ## 3 answers
  
  ### Answer by username_5 on 2016-01-19. Score: 5 | Accepted answer
  
  Perpetual check isn't a thing any more. But the idea is that one side demonstrates that they can keep putting the opponent's king in check, regardless of what the response is. Sooner or later it will turn into a threefold repetition or run afoul of the fifty move rule.
  
  
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  ### Answer by username_3 on 2016-01-19. Score: 5
  
  Well... Yes, it is still a thing, many top level games end in threefold repetition, but that is due to the perpetual check. So in a way, you can't draw a game by perpetual 'per se' but perpetual check can implicate threefold repetition occurring.
  
  
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  ### Answer by username_4 on 2016-10-09. Score: 2
  
  FIDE Laws of Chess do not recognize "perpetual check." They only recognize a case where the same position appears 3 times on the board. If it does, the player about to make the move that will cause it to appear for the 3rd time may claim a draw, but must do so *before* he makes his move. Once he makes his move, he no longer has any rights to claim a draw, because this can only be done while the player is still "on move". Once he moves, his opponent is "on move".
  
  The term "Threefold Repetition" is widely used, but misleading. Many players take it to mean what it seems to say, that a *repetition* has occurred 3 times, i.e. the position occurred once (no repetition), then again (1st repetition), then once again (2nd repetition; draw claim already available), and then *one more time* (3rd *repetition*, but *4th occurrence of the position*; draw claim still available). It's quite possible that 2 repetitions may occur, but the opponent may then vary *to avoid a draw claim*, in which case the 3rd repetition would *not*. If this came about, the player who wanted to claim a draw *missed his chance*, and he won't get another.
  
  It pays to understand the rules, not just know what people call them.
  
  
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