Answers.Body: <p>You may find <a href="https://lichess.org/blog/U4mtoEQAAEEAgZRL/strongest-chess-player-ever" rel="nofollow noreferrer">this post</a> by the developers of the website <a href="https://lichess.org/" rel="nofollow noreferrer">https://lichess.org/</a> helpful.</p>
  
  <p>Although they use <a href="http://stockfishchess.org/" rel="nofollow noreferrer">Stockfish</a> as the engine, they set the search depths as such (note that they have eight levels of play):</p>
  
  <ul>
  <li>AI level 1: skill 3/20, depth 1, 50ms</li>
  <li>AI level 2: skill 6/20, depth 2, 100ms</li>
  <li>AI level 3: skill 9/20, depth 3, 150ms</li>
  <li>AI level 4: skill 11/20, depth 4, 200ms</li>
  <li>AI level 5: skill 14/20, depth 6, 250ms</li>
  <li>AI level 6: skill 17/20, depth 8, 300ms</li>
  <li>AI level 7: skill 20/20, depth 10, 350ms</li>
  <li>AI level 8: skill 20/20, depth 12, 400ms</li>
  </ul>
  
  <p>I have personally played and seen others play against the varying levels. Level 1 is almost joke worthy--the computer may move his queen completely into danger, completely miss checkmates, etc.</p>
  
  <p>On the other hand, level eight is crushing; beating it requires repeated practice over the same line (at least, that is the only way I've seen people beat it).</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-30T20:16:34.980Z
Answers.LastActivityDate: 2017-05-30T20:16:34.980Z
Answers.UserDisplayName: PenumbraBrah
Body: <p>We are installing the Gull engine for some chess enthusiasts in an organization.
  We would like to set 6 difficulty levels from beginner to master using depth.
  Is there someone who can advice us about which values are the most accurate and progressive for each level?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-06-28T07:26:04.873Z
Comments.Text: Can you just do 3,4,5,6,7,8 etc?
Comments.UserDisplayName: SmallChess
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-06-28T08:14:48.250Z
Comments.Text: depth is the number of half moves the search nominally looks ahead, so it's a little bit hard to define. Middle game junior usually gets 14-16 depth to be competitive
Comments.UserDisplayName: Siberian Scout
Tags: <software><programming>
Title: Gull engine : Which depth value to set 6 difficulty levels?
ThreadText: # Gull engine : Which depth value to set 6 difficulty levels?
  
  (Asked by: username_0 on 2016-06-28)
  
  We are installing the Gull engine for some chess enthusiasts in an organization.
  We would like to set 6 difficulty levels from beginner to master using depth.
  Is there someone who can advice us about which values are the most accurate and progressive for each level?
  
  **Tags:** software, programming
  
  > **Comments:**
  > **username_1**: Can you just do 3,4,5,6,7,8 etc?  
  > **username_0**: depth is the number of half moves the search nominally looks ahead, so it's a little bit hard to define. Middle game junior usually gets 14-16 depth to be competitive  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2017-05-30. Score: 1
  
  You may find [this post](https://lichess.org/blog/U4mtoEQAAEEAgZRL/strongest-chess-player-ever) by the developers of the website <https://lichess.org/> helpful.
  
  Although they use [Stockfish](http://stockfishchess.org/) as the engine, they set the search depths as such (note that they have eight levels of play):
  
  * AI level 1: skill 3/20, depth 1, 50ms
  * AI level 2: skill 6/20, depth 2, 100ms
  * AI level 3: skill 9/20, depth 3, 150ms
  * AI level 4: skill 11/20, depth 4, 200ms
  * AI level 5: skill 14/20, depth 6, 250ms
  * AI level 6: skill 17/20, depth 8, 300ms
  * AI level 7: skill 20/20, depth 10, 350ms
  * AI level 8: skill 20/20, depth 12, 400ms
  
  I have personally played and seen others play against the varying levels. Level 1 is almost joke worthy--the computer may move his queen completely into danger, completely miss checkmates, etc.
  
  On the other hand, level eight is crushing; beating it requires repeated practice over the same line (at least, that is the only way I've seen people beat it).
  
  
  ---
  
  