X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=client%2Fclient_OLD%2Fviews%2Frules%2FBaroque%2Fen.pug;fp=client%2Fclient_OLD%2Fviews%2Frules%2FBaroque%2Fen.pug;h=fb781641037f95e1ab548ef96eb69a06e1d04feb;hb=625022fdcf750f0aff8fcd699f7e9b89730e1d10;hp=0000000000000000000000000000000000000000;hpb=b955c65b942d09d24b5c3bed0d755d4f2f8f71f1;p=vchess.git diff --git a/client/client_OLD/views/rules/Baroque/en.pug b/client/client_OLD/views/rules/Baroque/en.pug new file mode 100644 index 00000000..fb781641 --- /dev/null +++ b/client/client_OLD/views/rules/Baroque/en.pug @@ -0,0 +1,173 @@ +p.boxed + | Most pieces look the same but behave very differently. + | They generally move like an orthodox queen, + | but capturing rules are complex. + +p + | Note: 'Baroque' is the initial name thought by the author, + | but 'Ultima' is also largely adopted. + a(href="https://www.chessvariants.com/people.dir/abbott.html") + | He prefers 'Baroque' + | , and I think me too. + +h3 Specifications + +ul + li Chessboard: standard. + li Material: "standard". + li Non-capturing moves: often like queen. + li Special moves: none. + li Captures: very special. + li End of game: standard; see below. + +h4 Pieces names + +p Pieces names refer to the way they capture, which is described later. +ul + li Pawn : pawn or pincer + li Rook : coordinator + li Knight : long leaper + li Bishop : chameleon + li Queen : withdrawer + li King : king (same behavior as in standard chess) +p. + Besides, a new piece is introduced: the immobilizer, written by the letter 'm' + in FEN diagrams and PGN games. It is represented by an upside-down rook: + +figure.diagram-container + .diagram + | fen:8/8/4m3/8/8/8/3M4/8: + figcaption Immobilizers on d2 and e6. + +h3 Non-capturing moves + +p. + Pawns move as orthodox rooks, and the king moves as usual, + one square in any direction. + All other pieces move like an orthodox queen. + +p. + When a piece is adjacent to an enemy immobilizer, it cannot move unless + the enemy immobilizer is adjacent to a friendly immobilizer or chameleon + (cancelling the powers of the opponent's immobilizer). +p + | Note : this corresponds to the "pure rules" described on + a(href="http://www.inference.org.uk/mackay/ultima/ultima.html") this page + | , which slightly differ from the initial rules. + | The aim is to get rid of the weird suicide rule by weakening the immobilizers lock. + | In particular, in the original rules two adjacent immobilizer are stuck forever + | until one is captured. Note that it's still the case if all chameleons disappeared. + +h3 Capturing moves + +p. + Easy case first: the king captures as usual, by moving onto an adjacent square + occupied by an enemy piece. But this is the only piece following orthodox rules, + and also the only one which captures by moving onto an occupied square. + All other pieces capture passively: they land on a free square and captured + units are determined by some characteristics of the movement. + +p Note 1: the immobilizer does not capture. + +p. + Note 2: for passive captures, a 'X' is added at the end of the move notation, + to indicate that something was taken (replaying the game is necessary to know where). + +h4 Pawns/Pincers + +p. + If at the end of its movement a pawn is horizontally or vertically adjacent to an + enemy piece, which itself is next to a friendly piece (in the same direction), + the "pinced" unit is removed from the board. + +figure.diagram-container + .diagram + | fen:7k/5ppp/2N5/2n5/3rB3/8/PPP5/K7: + figcaption 1.Pc2c4 captures both coordinator and long leaper. + +h4 Coordinators (rooks) + +p. + Imagine that rook and king of the same color are two corners of a rectangle + (this works if these two pieces are unaligned). + If at the end of a rook move an enemy piece stands in any of the two remaining + corners, it is captured. + +figure.diagram-container + .diagram + | fen:8/2b4K/2q5/3p1N1p/8/8/2R5/k7: + figcaption 1.Rc5 captures on c7 and h5. + +h4 Long leapers (knights) + +p. + A knight captures exactly as a queen in international draughts game: by jumping + over its enemies, as many times as it can/want but always in the same direction. + In this respect it is less powerful than a draughts' queen: + on the following diagram c8 or f6 cannot be captured. + However, the knight does not have to maximize the number of captured units + (as is the case in draughts). + +figure.diagram-container + .diagram + | fen:2n4k/3r4/5b2/3p4/1m6/3b4/3N4/K7 d4,d6,d8,a5: + figcaption All marked squares captures are playable from d2. + +h4 Withdrawer (queen) + +p. + The queen captures by moving away from an adjacent enemy piece, in the opposite + direction (without jumping, the path must be free). + +figure.diagram-container + .diagram + | fen:7k/8/8/3Qr3/8/8/8/K7 a5,b5,c5: + figcaption 1.Qa5, 1.Qb5 or 1.Qc5 captures the black rook. + +h4 Chameleon (bishop) + +p The chameleon captures pieces in the way they would capture. So, it +ul + li pinces pawns (if moving like a pawn), + li withdraws from withdrawers, + li leaps over long leapers, + li coordinates coordinators. +p ...and these captures can be combined. + +p. + Remark: the move indicated on the diagram doesn't capture the black pincer + on e5, since it is a diagonal move (not like a pawn). + +figure.diagram-container + .diagram + | fen:7k/8/8/r3pP2/2n5/8/B7/K7 a5,c4: + figcaption 1.Bd5 captures the two marked pieces. + +p. + Besides, chameleon immobilizes immobilizers (but cannot capture them since they + do not capture). + +p. + A chameleon captures the king in the same way the king captures, which means that + a chameleon adjacent to a king gives check. + +h3 End of the game + +p. + Checkmate or stalemate as in standard chess. Note however that checks are more + difficult to see, because of the exotic capturing rules. For example, on the + following diagram the white king cannot move to e5 because then + the black pawn could capture by moving next to it. + +figure.diagram-container + .diagram + | fen:7k/8/8/p4r/4K3/8/8/8 e5: + figcaption 1.Ke5 is impossible + +h3 More information + +p. + | A good starting point is the + a(href="https://en.wikipedia.org/wiki/Baroque_chess") Wikipedia page + | , which also gives pointers to other interesting pages (including + | chessvariants.com, as usual).