Answers.Body: <p>If you want a specific fairy piece designed to share space with other pieces, I don't know of any established/well-known ones. Perhaps unsurprisingly, people have made up some obscure fairy pieces that do this, but not necessarily in serious variants. Examples: <a href="https://www.chess.com/forum/view/community/invent-the-new-worst-chess-piece-ever?page=12#comment-28502840" rel="nofollow noreferrer">https://www.chess.com/forum/view/community/invent-the-new-worst-chess-piece-ever?page=12#comment-28502840</a> <a href="https://www.chess.com/forum/view/community/invent-the-new-worst-chess-piece-ever?page=13#comment-30574334" rel="nofollow noreferrer">https://www.chess.com/forum/view/community/invent-the-new-worst-chess-piece-ever?page=13#comment-30574334</a></p>
  <p>Edit: I'm not sure if this counts, but some fairy pieces could work like vehicles or carriers of other pieces, such as Carrier from <a href="https://www.chessvariants.com/piececlopedia.dir/noveltypieces.html" rel="nofollow noreferrer">https://www.chessvariants.com/piececlopedia.dir/noveltypieces.html</a></p>
  <p>There are quite a few variants that broadly allow multiple pieces occupying the same square, but don't have designated fairy pieces that specifically do this unlike other pieces. See eg. <a href="https://chess.stackexchange.com/questions/28742/variant-in-which-two-pieces-can-occupy-a-single-square">Variant in which two pieces can occupy a single square</a></p>
  <p>Some variants have similar properties but are not quite the same thing:</p>
  <p>Variants where pieces can be stacking. Eg. <a href="https://www.chess.com/forum/view/general/stack-chess" rel="nofollow noreferrer">https://www.chess.com/forum/view/general/stack-chess</a>  <a href="https://www.chessvariants.com/difftaking.dir/pillar.html" rel="nofollow noreferrer">https://www.chessvariants.com/difftaking.dir/pillar.html</a></p>
  <p>Variants where a square can be occupied by a superposition of multiple pieces/piece types, like inspired by quantum physics. Eg. <a href="https://quantumai.google/cirq/experiments/unitary/quantum_chess" rel="nofollow noreferrer">https://quantumai.google/cirq/experiments/unitary/quantum_chess</a>  <a href="https://www.reddit.com/r/chess/comments/12f81jo/quantum_chess_variant/" rel="nofollow noreferrer">https://www.reddit.com/r/chess/comments/12f81jo/quantum_chess_variant/</a> (There are several variants called quantum chess or similar. On the other hand, there are variants where a piece can be on multiple squares like <a href="https://www.chessvariants.com/d.betza/chessvar/tirebiter.html" rel="nofollow noreferrer">https://www.chessvariants.com/d.betza/chessvar/tirebiter.html</a>  I can't find variants right now that allows both pieces on multiple squares and pieces sharing squares, but wouldn't be surprised if they exist)</p>
  <p>variants where boards have a third dimension and pieces on the same location horizontally but not vertically can interact, eg. <a href="https://en.wikipedia.org/wiki/Dragonchess" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Dragonchess</a></p>
  <p>Pieces that can be passed through by riders but cannot really share squares in a position(<a href="https://www.chessvariants.com/rules/re-ghostchess" rel="nofollow noreferrer">https://www.chessvariants.com/rules/re-ghostchess</a>)</p>
  <p>Fractal boards where a square on one board corresponds to multiple squares on another board in some way(eg. <a href="https://www.chessvariants.com/rules/fractal-chess" rel="nofollow noreferrer">https://www.chessvariants.com/rules/fractal-chess</a>  <a href="https://news.ycombinator.com/item?id=24065144" rel="nofollow noreferrer">https://news.ycombinator.com/item?id=24065144</a>)</p>
  <p>Pieces can merge and/or split, often based on their abilities, so even if technically it's not called sharing a square it's equivalent in some ways. There are many variants, eg. <a href="https://www.chessvariants.com/difftaking.dir/merger.html" rel="nofollow noreferrer">https://www.chessvariants.com/difftaking.dir/merger.html</a>  <a href="https://www.chessvariants.com/rules/fluid-chess" rel="nofollow noreferrer">https://www.chessvariants.com/rules/fluid-chess</a> <a href="https://www.chessvariants.com/other.dir/fusion.html" rel="nofollow noreferrer">https://www.chessvariants.com/other.dir/fusion.html</a> <a href="https://www.chessvariants.com/tag/Rules%3AFission" rel="nofollow noreferrer">https://www.chessvariants.com/tag/Rules%3AFission</a> <a href="https://www.chessvariants.com/tag/Rules%3AFusion" rel="nofollow noreferrer">https://www.chessvariants.com/tag/Rules%3AFusion</a></p>
  <p>Some sources: <a href="https://www.chessvariants.com/boardrules.dir/multocc.html" rel="nofollow noreferrer">https://www.chessvariants.com/boardrules.dir/multocc.html</a>  <a href="https://www.chessvariants.com/boardrules.dir/crowded1.html" rel="nofollow noreferrer">https://www.chessvariants.com/boardrules.dir/crowded1.html</a></p>
  
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Body: <p>I have never seen a piece that doesn't take up a full square. Is there any chess variant where there is a piece that can share a square with another piece?</p>
  
Tags: <chess-variants><online-chess><pieces><unorthodox-pieces>
Title: Is there a Fairy Chess piece that takes up less than one square on the board?
ThreadText: # Is there a Fairy Chess piece that takes up less than one square on the board?
  
  (Asked by: username_0 on 2024-06-18)
  
  I have never seen a piece that doesn't take up a full square. Is there any chess variant where there is a piece that can share a square with another piece?
  
  **Tags:** chess-variants, online-chess, pieces, unorthodox-pieces
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2024-06-19. Score: 3 | Accepted answer
  
  If you want a specific fairy piece designed to share space with other pieces, I don't know of any established/well-known ones. Perhaps unsurprisingly, people have made up some obscure fairy pieces that do this, but not necessarily in serious variants. Examples: <https://www.chess.com/forum/view/community/invent-the-new-worst-chess-piece-ever?page=12#comment-28502840> <https://www.chess.com/forum/view/community/invent-the-new-worst-chess-piece-ever?page=13#comment-30574334>
  
  Edit: I'm not sure if this counts, but some fairy pieces could work like vehicles or carriers of other pieces, such as Carrier from <https://www.chessvariants.com/piececlopedia.dir/noveltypieces.html>
  
  There are quite a few variants that broadly allow multiple pieces occupying the same square, but don't have designated fairy pieces that specifically do this unlike other pieces. See eg. [Variant in which two pieces can occupy a single square](https://chess.stackexchange.com/questions/28742/variant-in-which-two-pieces-can-occupy-a-single-square)
  
  Some variants have similar properties but are not quite the same thing:
  
  Variants where pieces can be stacking. Eg. <https://www.chess.com/forum/view/general/stack-chess> <https://www.chessvariants.com/difftaking.dir/pillar.html>
  
  Variants where a square can be occupied by a superposition of multiple pieces/piece types, like inspired by quantum physics. Eg. <https://quantumai.google/cirq/experiments/unitary/quantum_chess> <https://www.reddit.com/r/chess/comments/12f81jo/quantum_chess_variant/> (There are several variants called quantum chess or similar. On the other hand, there are variants where a piece can be on multiple squares like <https://www.chessvariants.com/d.betza/chessvar/tirebiter.html> I can't find variants right now that allows both pieces on multiple squares and pieces sharing squares, but wouldn't be surprised if they exist)
  
  variants where boards have a third dimension and pieces on the same location horizontally but not vertically can interact, eg. <https://en.wikipedia.org/wiki/Dragonchess>
  
  Pieces that can be passed through by riders but cannot really share squares in a position(<https://www.chessvariants.com/rules/re-ghostchess>)
  
  Fractal boards where a square on one board corresponds to multiple squares on another board in some way(eg. <https://www.chessvariants.com/rules/fractal-chess> <https://news.ycombinator.com/item?id=24065144>)
  
  Pieces can merge and/or split, often based on their abilities, so even if technically it's not called sharing a square it's equivalent in some ways. There are many variants, eg. <https://www.chessvariants.com/difftaking.dir/merger.html> <https://www.chessvariants.com/rules/fluid-chess> <https://www.chessvariants.com/other.dir/fusion.html> <https://www.chessvariants.com/tag/Rules%3AFission> <https://www.chessvariants.com/tag/Rules%3AFusion>
  
  Some sources: <https://www.chessvariants.com/boardrules.dir/multocc.html> <https://www.chessvariants.com/boardrules.dir/crowded1.html>
  
  > **Comments:**
  > **username_2**: Answers to [this question](https://chess.stackexchange.com/q/28742/14678) are also relevant  
  
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