Fix Checkered and Ultima rules. Write Chess960 rules and complete others

[vchess.git] / views / rules / Checkered.pug

diff --git a/views/rules/Checkered.pug b/views/rules/Checkered.pug
index 23ea0f0..ea9b941 100644 (file)
--- a/views/rules/Checkered.pug
+++ b/views/rules/Checkered.pug
@@ -1,5 +1,6 @@
 p.boxed
-       | The capture of an enemy piece produces a new "checkered" piece belonging to both players.
+       | The capture of an enemy piece produces a new "checkered" piece belonging
+       | to both players.
 
 figure.showPieces.center-align
        img(src="/images/tmp_checkered/cp.png")
@@ -27,37 +28,60 @@ h2.stageDelimiter Stage 1
 h3 Basics
 
 ol
-       li Each capture produces a new piece, taking on nature of the capturing or captured one.
-       li The new piece arising from a capture has a new color: "checkered", as illustrated above.
-       li All checkered pieces belong to the player in turn and can capture the opponents pieces.
+       li
+               | Each capture produces a new piece, taking on nature of
+               | the capturing or captured one.
+       li
+               | The new piece arising from a capture has a new color:
+               | "checkered", as illustrated above.
+       li
+               | All checkered pieces belong to the player in turn and can
+               | capture the opponents pieces.
 
 span Remarks:
 ul
        li A checkered move cannot be "undone" right after if this repeat the position.
-       li Checkered chess pieces cannot be captured.
+       li Checkered pieces cannot be captured.
 
 figure.diagram-container
        .diagram
                | fen:2kr4/pp6/2p5/4ss1r/1P2ns1P/2Np4/P1P1P1BP/R2o1RK1:
        figcaption.
-               Black plays Rxh4=P. (Checkered pawn to) h5 is allowed then, because piece's nature changed.
+               Black plays Rxh4=P. (Checkered pawn to) h5 is allowed then,
+               because piece's nature changed.
 
 h3 Pawn moves
 
 ul
-       li A pawn captured on its starting square keeps the right to advance two squares.
-       li Checkered pawns cannot capture en passant.
+       li.
+               Pawns can jump two squares only from their initial rank, and only once in the game:
+               a checkered pawn returning on the pawns' start rank cannot jump. However:
+       li.
+               A pawn captured on its starting square (thus becoming "checkered") keeps the
+               right to advance two squares.
+       li.
+               Checkered pawns cannot capture en passant, because while the pawn was "passing"
+               they were of the same color.
 
 h2.stageDelimiter Stage 2
 
-p.warn This stage is unimplemented for now.
+p.warn This stage is not (and probably will never be) implemented.
 
 p.
-       During the game one of the two players can decide to take control of the checkered pieces.
+       During the game one of the two players can decide to take control of the
+       checkered pieces.
        They thus become autonomous and vulnerable to being captured - stage 2 begins.
-       The other player is in charge of both the white and black pieces, and tries to eliminate checkered pieces.
+       The other player is in charge of both the white and black pieces, and tries to
+       eliminate checkered pieces.
        The checkered side wins by checkmating either the white or black king.
 
+h4 Variant of stage 2
+p.
+       An observer could decide to join the game by taking the checkered pieces
+       at any moment.
+       It then becomes a chess game with three players, with some subtelties to be resolved.
+       It was tested in some (real life) games organised by the variant creator.
+
 h3 Special moves
 
 span Checkered pawns can...
@@ -69,5 +93,9 @@ ul
 h3 Credits
 
 ul
-       li The rules of Checkered Chess were thought up by Patrick Bernier and developed with the help of Benjamin Auder.
-       li Thanks also to Olive Martin, Christian Poisson, Bevis Martin, Laurent Nouhaud and Frédéric Fradet.
+       li.
+               The rules of Checkered Chess were thought up by Patrick Bernier and developed
+               with the help of Benjamin Auder.
+       li.
+               Thanks also to Olive Martin, Christian Poisson, Bevis Martin, Laurent Nouhaud
+               and Frédéric Fradet.