variants/Dynamo/complete_rules.html

   1 <html>
   2 <head>
   3   <title>Dynamo Rules</title>
   4   <link href="/common.css" rel="stylesheet"/>
   5   <link href="/variants/Dynamo/style.css" rel="stylesheet"/>
   6 </head>
   7 <body>
   8 <div class="full-rules">
   9 <h1>Dynamo Rules</h1>
  10
  11 <p>
  12   Pieces have the same movement as in orthodox chess, but they cannot
  13   take other pieces in the usual way. Instead of the normal captures, pieces
  14   can pull or push other pieces, potentially off the board.
  15   The goal is to send the enemy king off the board.
  16 </p>
  17
  18 <p>Each turn, a player has the following options:</p>
  19 <ul>
  20   <li>
  21     Move one of his pieces normally, then optionally pull something as an
  22     effect of this move.
  23   </li>
  24   <li>
  25     Push any piece with one of his pieces, then optionally follow the pushed
  26     piece.
  27   </li>
  28
  29 <p>
  30   It seems easier to understand with some examples. For a detailed
  31   introduction please visit
  32   <a href="https://echekk.fr/spip.php?page=article&id_article=599">
  33     this page
  34   </a> (in French).
  35 </p>
  36
  37 <figure>
  38   <div class="diag"
  39        data-fen='rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR ...'
  40        data-mks="e1,e3,e4,c3,f3,g4,h5,d3,c4,b5,a6">
  41   </div>
  42   <figcaption>Possible "pawn moves" in the initial position.</figcaption>
  43 </figure>
  44
  45 <p>
  46   The e2 pawn can move to e3 and e4 as usual. It can also slide diagonally,
  47   being pushed by the bishop or the queen (which may or may not move along
  48   this line afterward). It can also go to c3, being pushed by the knight from
  49   g1; then the knight can move to e2, or stay motionless.
  50   Finally, the pawn can "take the king": this is a special move indicating that
  51   you want it to exit the board. Indeed it could be pushed off the board by the
  52   bishop or the queen.
  53 </p>
  54
  55 <p>
  56   Note: if an action is possible but you don't want to play a second part in
  57   a move, click on any empty square: this will send an empty move.
  58 </p>
  59
  60 <figure>
  61   <div class="diag left"
  62        data-fen='rnbqkbnr/ppp1pppp/8/3p4/8/2N5/PPPPPPPP/R1BQKBNR ...'>
  63   </div>
  64   <div class="diag right"
  65        data-fen='rnbqkbnr/ppp1pppp/8/8/8/2p5/PPPPPPPP/RNBQKBNR ...'>
  66   </div>
  67   <figcaption>
  68     Pulling the d5 pawn to c3 (left: before, right: after).
  69   </figcaption>
  70 </figure>
  71
  72 <ul>
  73   <li>Pawns cannot pull (because they only move forward).</li>
  74   <li>
  75     When they could reach the square beyond the edge,
  76     pieces can exit the board by themselves, possibly dragging another piece
  77     out (friendly or enemy).
  78   </li>
  79 </ul>
  80
  81 <figure>
  82   <div class="diag"
  83        data-fen='rnb1qbnr/pppkpppp/3p4/8/Q1P5/5NP1/PP1PPP1P/RNB1KB1R ...'>
  84   </div>
  85   <figcaption>
  86     Check: the queen threatens to pull the king off the board
  87     along the a4-e8 diagonal.
  88   </figcaption>
  89 </figure>
  90
  91 <p>
  92   It is forbidden to undo a "move + action". For example here, white could
  93   push back the black bishop on g7 but not return to d4 then.
  94 </p>
  95
  96 <figure>
  97   <div class="diag left"
  98        data-fen='rnbqk1nr/ppppppbp/6p1/8/3B4/1P6/P1PPPPPP/RN1QKBNR ...'>
  99   </div>
 100   <div class="diag right"
 101        data-fen='rnbqk1nr/pppppp1p/6p1/8/3b4/1P6/PBPPPPPP/RN1QKBNR ...'>
 102   <figcaption>
 103     Pushing the d4 bishop to b2 (left: before, right: after).
 104   </figcaption>
 105 </figure>
 106
 107 <p>
 108   Castling is possible as long as the king and rook have not moved and
 109   haven't been pushed or pulled (this differs from the chessvariants
 110   description).
 111 </p>
 112
 113 <h3>End of the game</h3>
 114
 115 <p>
 116   The game ends when a push or pull action threatens to send the king off the
 117   board, and he has no way to escape it.
 118 </p>
 119
 120 <figure>
 121   <div class="diag"
 122        data-fen='8/4B3/8/8/6Qk/8/4N3/K7 ...'>
 123   </div>
 124   <figcaption>Dynamo checkmate ("Dynamate" :) )</figcaption>
 125 </figure>
 126
 127 <p>
 128   The king cannot "take" on g4: this would just push the queen one step to the
 129   left, and she would then push the king beyond the 'h' file.
 130   There are no en-passant captures.
 131 </p>
 132
 133 <h3>Source</h3>
 134
 135 <p>
 136   <a href="https://www.chessvariants.com/mvopponent.dir/dynamo.html">
 137     Dynamo chess
 138   </a>
 139   on chessvariants.com. The short description given on
 140   <a href="http://www.pion.ch/echecs/variante.php?jeu=dynamo">this page</a>
 141   might help too.
 142 </p>