Answers.Body: <p>It's generally a win for the three bishops. However, it can be a rather long process.</p>
  <p>The tablebase I consulted says that in this position with White to move, the best move for White is Kd3, which is a win for Black with DTZ of 87.</p>
  <pre><code>[FEN &quot;8/2kb4/8/8/8/2K1b2b/8/3R4 w - - 4 3&quot;] 
  </code></pre>
  <p>In fact, in some positions, the 50 move rule will trigger, which could result in a draw with best play. Here, Kd5 results in a DTZ of 101:</p>
  <pre><code>[FEN &quot;k7/3b4/8/8/2K5/7b/5b2/1R6 w - - 1 1&quot;]
  </code></pre>
  
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Answers.CreationDate: 2024-03-17T16:06:46.353Z
Answers.Text: It seems replacing the bishop with a knight (ensuring the other two bishops are on differently-coloured squares) also forces mate. A particularly difficult one is white[Kc3, Rh8] and black[Ka1, Bd1, Ba7, Na8] with black to move and win with DTZ of 133.
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Answers.Text: And to be clear, the example I selected almost certainly isn't the longest DTZ. I just put the pieces down wherever.
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Answers.CreationDate: 2024-03-17T16:44:39.190Z
Answers.Text: Your "DTZ of 133" comment made me try some other positions... yeah, sometimes the DTZ goes above 100, meaning the side with the rook could potentially get a draw by 50 move rule. I edited that possibility in.
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Body: <p>Can a rook force a draw against three bishops?</p>
  <p>One of the bishops is on a different coloured square than the other two.</p>
  
Tags: <endgame><bishop-endgame><rook-and-minor-endgame>
Title: Three bishops vs. rook endgame
ThreadText: # Three bishops vs. rook endgame
  
  (Asked by: username_0 on 2024-03-17)
  
  Can a rook force a draw against three bishops?
  
  One of the bishops is on a different coloured square than the other two.
  
  **Tags:** endgame, bishop-endgame, rook-and-minor-endgame
  
  
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  ## 1 answers
  
  ### Answer by username_1 on 2024-03-17. Score: 1 | Accepted answer
  
  It's generally a win for the three bishops. However, it can be a rather long process.
  The tablebase I consulted says that in this position with White to move, the best move for White is Kd3, which is a win for Black with DTZ of 87.
  [FEN "8/2kb4/8/8/8/2K1b2b/8/3R4 w - - 4 3"] 
  
  In fact, in some positions, the 50 move rule will trigger, which could result in a draw with best play. Here, Kd5 results in a DTZ of 101:
  [FEN "k7/3b4/8/8/2K5/7b/5b2/1R6 w - - 1 1"]
  
  > **Comments:**
  > **username_0**: It seems replacing the bishop with a knight (ensuring the other two bishops are on differently-coloured squares) also forces mate. A particularly difficult one is white[Kc3, Rh8] and black[Ka1, Bd1, Ba7, Na8] with black to move and win with DTZ of 133.  
  > **username_1**: And to be clear, the example I selected almost certainly isn't the longest DTZ. I just put the pieces down wherever.  
  > **username_1**: Your "DTZ of 133" comment made me try some other positions... yeah, sometimes the DTZ goes above 100, meaning the side with the rook could potentially get a draw by 50 move rule. I edited that possibility in.  
  
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