Body: <p><strong>TL;DR</strong> Is there a chess engine or other tools to study a &quot;position&quot; where the exact location of certain pieces is not known?</p>
  <p>From the following chess position, a plan could be to win the a2 pawn in three moves with either a skewer or a fork in the seventh rank, and then win the QPPPK v QK endgame.</p>
  <pre><code>[Title &quot;&quot;]
  [FEN &quot;8/5pk1/4p2p/2Q5/8/6q1/P7/6K1 w - - 0 42&quot;]
  [StartFlipped &quot;1&quot;]
  
  1. Kf1 (1. Kh1 Qe1+ {fork next}) Qf3+ 2. Ke1 (2. Kg1 Qd1+ {fork next}) Qh1+ {skewer next}
  
  </code></pre>
  <p>However, then white will be on the move, and we have to analyze whether there is or not a perpetual. The diagram below represents the 12 different positions we will have to analyze.</p>
  <pre><code>[Title &quot;&quot;]
  [FEN &quot;8/5pk1/4p2p/2Q5/8/2KKKKKK/q7/2KKKKKK w - - 0 44&quot;]
  [StartFlipped &quot;1&quot;]
  </code></pre>
  <p>Of course, since the 12 positions are similar, their analysis will overlap with each other. Therefore, it would be ideal to begin with a singular analysis, and only bifurcate it into multiple cases when the white king's position starts to matter.</p>
  <p>I usually do such a study manually using the <a href="https://lichess.org/editor/8/5pk1/4p2p/2Q5/8/2KKKKKK/q7/2KKKKKK_w_-_-_0_44?color=black" rel="nofollow noreferrer">board editor</a> of Lichess, while the variations are shallow enough for me to keep track with arrows. Then I switch to a Lichess Study at the expense of having to create multiple chapters, one for each remaining possibility.</p>
  <p>Are better known ways to do this kind of in-depth analysis?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2023-08-02T16:36:37.913Z
Comments.Text: Off-topic: The positions presented here could appear in today's Carlsen game against Pantsulaia after 37... Qe2+.
Comments.UserDisplayName: FxMySz
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2023-08-03T07:12:58.357Z
Comments.Text: With too many time on my hands I would hotwire a generic tablebase and insert special "breakoff" conditions. (Q exchange being one) In this special case, you can run the 12 subpositions through Syzygy. Black always wins.
Comments.UserDisplayName: Hauke Reddmann
Tags: <engines><analysis><learning><software><study>
Title: Tools to study positions with partial information?
ThreadText: # Tools to study positions with partial information?
  
  (Asked by: username_0 on 2023-08-02)
  
  TL;DR Is there a chess engine or other tools to study a "position" where the exact location of certain pieces is not known?
  From the following chess position, a plan could be to win the a2 pawn in three moves with either a skewer or a fork in the seventh rank, and then win the QPPPK v QK endgame.
  [Title ""]
  [FEN "8/5pk1/4p2p/2Q5/8/6q1/P7/6K1 w - - 0 42"]
  [StartFlipped "1"]
  
  1. Kf1 (1. Kh1 Qe1+ {fork next}) Qf3+ 2. Ke1 (2. Kg1 Qd1+ {fork next}) Qh1+ {skewer next}
  
  
  However, then white will be on the move, and we have to analyze whether there is or not a perpetual. The diagram below represents the 12 different positions we will have to analyze.
  [Title ""]
  [FEN "8/5pk1/4p2p/2Q5/8/2KKKKKK/q7/2KKKKKK w - - 0 44"]
  [StartFlipped "1"]
  
  Of course, since the 12 positions are similar, their analysis will overlap with each other. Therefore, it would be ideal to begin with a singular analysis, and only bifurcate it into multiple cases when the white king's position starts to matter.
  I usually do such a study manually using the board editor of Lichess, while the variations are shallow enough for me to keep track with arrows. Then I switch to a Lichess Study at the expense of having to create multiple chapters, one for each remaining possibility.
  Are better known ways to do this kind of in-depth analysis?
  
  **Tags:** engines, analysis, learning, software, study
  
  > **Comments:**
  > **username_0**: Off-topic: The positions presented here could appear in today's Carlsen game against Pantsulaia after 37... Qe2+.  
  > **username_1**: With too many time on my hands I would hotwire a generic tablebase and insert special "breakoff" conditions. (Q exchange being one) In this special case, you can run the 12 subpositions through Syzygy. Black always wins.  
  
  ---
  
  ## 0 answers
  
  