client/src/translations/rules/Baroque/en.pug

   1 p.boxed
   2   | Most pieces look the same but behave very differently.
   3   | They generally move like an orthodox queen,
   4   | but capturing rules are complex.
   5
   6 p
   7   | Note: 'Baroque' is the initial name thought by the author,
   8   | but 'Ultima' is also largely adopted.
   9   a(href="https://www.chessvariants.com/people.dir/abbott.html")
  10     | He prefers 'Baroque'
  11   | , and I think me too.
  12
  13 h4 Pieces names
  14
  15 p Pieces names refer to the way they capture, which is described later.
  16 ul
  17   li Pawn : pawn or pincer
  18   li Rook : coordinator
  19   li Knight : long leaper
  20   li Bishop : chameleon
  21   li Queen : withdrawer
  22   li King : king (same behavior as in standard chess)
  23 p.
  24   Besides, a new piece is introduced: the immobilizer, written by the letter 'm'
  25   in FEN diagrams and PGN games. It is represented by an upside-down rook:
  26
  27 figure.diagram-container
  28   .diagram
  29     | fen:8/8/4m3/8/8/8/3M4/8:
  30   figcaption Immobilizers on d2 and e6.
  31
  32 h3 Non-capturing moves
  33
  34 p.
  35   Pawns move as orthodox rooks, and the king moves as usual,
  36   one square in any direction.
  37   All other pieces move like an orthodox queen.
  38
  39 p.
  40   When a piece is adjacent to an enemy immobilizer, it cannot move unless
  41   the enemy immobilizer is adjacent to a friendly immobilizer or chameleon
  42   (cancelling the powers of the opponent's immobilizer).
  43 p
  44   | Note : this corresponds to the "pure rules" described on
  45   a(href="http://www.inference.org.uk/mackay/ultima/ultima.html") this page
  46   | , which slightly differ from the initial rules.
  47   | The aim is to get rid of the weird suicide rule by weakening the immobilizers lock.
  48   | In particular, in the original rules two adjacent immobilizer are stuck forever
  49   | until one is captured. Note that it's still the case if all chameleons disappeared.
  50
  51 h3 Capturing moves
  52
  53 p.
  54   Easy case first: the king captures as usual, by moving onto an adjacent square
  55   occupied by an enemy piece. But this is the only piece following orthodox rules,
  56   and also the only one which captures by moving onto an occupied square.
  57   All other pieces capture passively: they land on a free square and captured
  58   units are determined by some characteristics of the movement.
  59
  60 p Note 1: the immobilizer does not capture.
  61
  62 p.
  63   Note 2: for passive captures, a 'X' is added at the end of the move notation,
  64   to indicate that something was taken (replaying the game is necessary to know where).
  65
  66 h4 Pawns/Pincers
  67
  68 p.
  69   If at the end of its movement a pawn is horizontally or vertically adjacent to an
  70   enemy piece, which itself is next to a friendly piece (in the same direction),
  71   the "pinced" unit is removed from the board.
  72
  73 figure.diagram-container
  74   .diagram
  75     | fen:7k/5ppp/2N5/2n5/3rB3/8/PPP5/K7:
  76   figcaption 1.Pc2c4 captures both coordinator and long leaper.
  77
  78 h4 Coordinators (rooks)
  79
  80 p.
  81   Imagine that rook and king of the same color are two corners of a rectangle
  82   (this works if these two pieces are unaligned).
  83   If at the end of a rook move an enemy piece stands in any of the two remaining
  84   corners, it is captured.
  85
  86 figure.diagram-container
  87   .diagram
  88     | fen:8/2b4K/2q5/3p1N1p/8/8/2R5/k7:
  89   figcaption 1.Rc5 captures on c7 and h5.
  90
  91 h4 Long leapers (knights)
  92
  93 p.
  94   A knight captures exactly as a queen in international draughts game: by jumping
  95   over its enemies, as many times as it can/want but always in the same direction.
  96   In this respect it is less powerful than a draughts' queen:
  97   on the following diagram c8 or f6 cannot be captured.
  98   However, the knight does not have to maximize the number of captured units
  99   (as is the case in draughts).
 100
 101 figure.diagram-container
 102   .diagram
 103     | fen:2n4k/3r4/5b2/3p4/1m6/3b4/3N4/K7 d4,d6,d8,a5:
 104   figcaption All marked squares captures are playable from d2.
 105
 106 h4 Withdrawer (queen)
 107
 108 p.
 109   The queen captures by moving away from an adjacent enemy piece, in the opposite
 110   direction (without jumping, the path must be free).
 111
 112 figure.diagram-container
 113   .diagram
 114     | fen:7k/8/8/3Qr3/8/8/8/K7 a5,b5,c5:
 115   figcaption 1.Qa5, 1.Qb5 or 1.Qc5 captures the black rook.
 116
 117 h4 Chameleon (bishop)
 118
 119 p The chameleon captures pieces in the way they would capture. So, it
 120 ul
 121   li pinces pawns (if moving like a pawn),
 122   li withdraws from withdrawers,
 123   li leaps over long leapers,
 124   li coordinates coordinators.
 125 p ...and these captures can be combined.
 126
 127 p.
 128   Remark: the move indicated on the diagram doesn't capture the black pincer
 129   on e5, since it is a diagonal move (not like a pawn).
 130
 131 figure.diagram-container
 132   .diagram
 133     | fen:7k/8/8/r3pP2/2n5/8/B7/K7 a5,c4:
 134   figcaption 1.Bd5 captures the two marked pieces.
 135
 136 p.
 137   Besides, chameleon immobilizes immobilizers (but cannot capture them since they
 138   do not capture).
 139
 140 p.
 141   A chameleon captures the king in the same way the king captures, which means that
 142   a chameleon adjacent to a king gives check.
 143
 144 h3 End of the game
 145
 146 p.
 147   Checkmate or stalemate as in standard chess. Note however that checks are more
 148   difficult to see, because of the exotic capturing rules. For example, on the
 149   following diagram the white king cannot move to e5 because then
 150   the black pawn could capture by moving next to it.
 151
 152 figure.diagram-container
 153   .diagram
 154     | fen:7k/8/8/p4r/4K3/8/8/8 e5:
 155   figcaption 1.Ke5 is impossible
 156
 157 h3 More information
 158
 159 p
 160   | A good starting point is the
 161   a(href="https://en.wikipedia.org/wiki/Baroque_chess") Wikipedia page
 162   | , which also gives pointers to other interesting pages (including
 163   | chessvariants.com, as usual).
 164
 165 p Inventor: Robert Abbott (1963)