Answers.Body: <p>Carlsen's <code>26.Kd2</code> is a a blunder because it exposes the White King to a tactic that wins two pawns and gives Black terrific pressure. The tactic is effectively a guarantee of victory for Black:</p>
  
  <pre><code>[FEN "6rr/1k3p2/1pb1p1np/p1p1P2R/2P3R1/2P1B3/P1BK1PP1/8 b - - 0 1"]
  
  1...Nxe5! 2.Rxg8 (2.Rxe5? Rxg4) Nxc4+! {The Knight gets out of danger, with check and an extra pawn--you couldn't ask for anything better!} 3.Kd3 (3.Ke2 Rxg8) Nb2+ 4.Ke2 Rxg8 {Black is now two full pawns ahead, with lots of pressure on the weak g2 pawn and vastly better pawns for the endgame. }
  </code></pre>
  
  <p>The point is that <code>2...Nxc4+</code> wins Black a second free pawn, by virtue of the check against the White King. Without the ability to get the Knight out of danger with check, <code>...Nxe5</code> is not possible (because White could then simply trade Rooks and then recapture the Knight with a winning position).</p>
  
  <hr>
  
  <p>Anand's mistake on <em>his</em> twenty-sixth move was that he missed this tactic, playing <code>26...a4</code> very quickly and allowing Carlsen to correct his mistake by moving his King away from <code>d2</code>.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-11-17T16:44:49.480Z
Answers.LastActivityDate: 2014-11-19T00:35:14.857Z
Answers.LastEditDate: 2014-11-19T00:35:14.857Z
Answers.UserDisplayName: Henry Keiter
Answers.Body: <p>Carlsen's move(26.Kd2) was a blunder because of Anand's practically winning move(26...Nxe5!) which had a discovered attack on the rook on G4(and potential to take on C4). The double blunder occurred when Anand missed this move and played A4 which is a clear blunder when he had another great move available to him.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-11-17T14:26:19.823Z
Answers.Text: So was Carlsen's blunder that he put his King on a square which could be put under attack from c4 and in the process lose 2 pawns?
Answers.UserDisplayName: user4247
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-11-17T16:31:54.817Z
Answers.Text: @user4247 that is correct.
Answers.UserDisplayName: NM Wesley Falcao
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-11-17T13:53:29.157Z
Answers.LastActivityDate: 2014-11-17T13:53:29.157Z
Answers.UserDisplayName: bucketman
Body: <p>In the Anand vs Carlsen Match 6, why was move 26 a blunder for both players?</p>
  
  <pre><code>[White "Carlsen"]
  [Black "Anand"]
  [FEN "6rr/1k3p2/1pb1p1np/p1p1P2R/2P3R1/2P1B3/P1B2PP1/2K5 w - - 0 1"]
  
  1.Kd2? a4?
  </code></pre>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-11-18T04:00:59.170Z
Comments.Text: http://www.thechesswebsite.com/world-chess-championship-game-6-magnus-carlsen-vs-vishy-anand/ <- Excellent in-depth coverage and explanation
Comments.UserDisplayName: Jay Sullivan
Tags: <blunder><carlsen-anand-2014>
Title: Why was move 26 in Carlsen-Anand 2014 WC Game 6 a blunder by both players?
ThreadText: # Why was move 26 in Carlsen-Anand 2014 WC Game 6 a blunder by both players?
  
  (Asked by: username_0 on 2014-11-17)
  
  In the Anand vs Carlsen Match 6, why was move 26 a blunder for both players?
  [White "Carlsen"]
  [Black "Anand"]
  [FEN "6rr/1k3p2/1pb1p1np/p1p1P2R/2P3R1/2P1B3/P1B2PP1/2K5 w - - 0 1"]
  
  1.Kd2? a4?
  
  **Tags:** blunder, carlsen-anand-2014
  
  > **Comments:**
  > **username_1**: http://www.thechesswebsite.com/world-chess-championship-game-6-magnus-carlsen-vs-vishy-anand/ <- Excellent in-depth coverage and explanation  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_2 on 2014-11-17. Score: 15
  
  Carlsen's 26.Kd2 is a a blunder because it exposes the White King to a tactic that wins two pawns and gives Black terrific pressure. The tactic is effectively a guarantee of victory for Black:
  [FEN "6rr/1k3p2/1pb1p1np/p1p1P2R/2P3R1/2P1B3/P1BK1PP1/8 b - - 0 1"]
  
  1...Nxe5! 2.Rxg8 (2.Rxe5? Rxg4) Nxc4+! {The Knight gets out of danger, with check and an extra pawn--you couldn't ask for anything better!} 3.Kd3 (3.Ke2 Rxg8) Nb2+ 4.Ke2 Rxg8 {Black is now two full pawns ahead, with lots of pressure on the weak g2 pawn and vastly better pawns for the endgame. }
  
  The point is that 2...Nxc4+ wins Black a second free pawn, by virtue of the check against the White King. Without the ability to get the Knight out of danger with check, ...Nxe5 is not possible (because White could then simply trade Rooks and then recapture the Knight with a winning position).
  
  Anand's mistake on his twenty-sixth move was that he missed this tactic, playing 26...a4 very quickly and allowing Carlsen to correct his mistake by moving his King away from d2.
  
  
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  ### Answer by username_3 on 2014-11-17. Score: 6
  
  Carlsen's move(26.Kd2) was a blunder because of Anand's practically winning move(26...Nxe5!) which had a discovered attack on the rook on G4(and potential to take on C4). The double blunder occurred when Anand missed this move and played A4 which is a clear blunder when he had another great move available to him.
  
  > **Comments:**
  > **username_0**: So was Carlsen's blunder that he put his King on a square which could be put under attack from c4 and in the process lose 2 pawns?  
  > **username_4**: @username_0 that is correct.  
  
  ---
  
  