Some debug, plan several short + long term TODOs

[vchess.git] / views / rules / Marseille / en.pug

diff --git a/views/rules/Marseille/en.pug b/views/rules/Marseille/en.pug
index 221bd83..503d51e 100644 (file)
--- a/views/rules/Marseille/en.pug
+++ b/views/rules/Marseille/en.pug
@@ -18,18 +18,49 @@ p.
 h3 Basics
 
 p.
-       TODO: explain, every turn twice except if check on 1st turn, or
-       very first move in game.
-       En-passant: possible in any order if 2 ep squares,
-       otherwise has to be the first move.
-       OK even if opponent moved his pawn at subturn 1.
+       At the very first move of the game, white make only one move - as usual.
+       However, after that and for all the game each side must play twice at
+       every turn. There are two exceptions:
+
+ul
+       li.
+               If the first move gives check (maybe checkmate),
+               then a second move isn't played.
+       li.
+               If no move is available after the first move, then it's stalemate
+               and again, there is no second move.
+
+p.
+       About the PGN game notation: when a side plays two moves in a row,
+       they are separated (in order) by a comma in the PGN.
+       Example: 3.Na5,Bd3 e6,f4 (the two first are white moves,
+       the two others are black moves).
 
 figure.diagram-container
        .diagram
-               | fen:r3kbnr/pp3ppp/3p4/4p3/8/8/PPPPPPPP/R1BQKBNR:
-       figcaption After the moves 1.Nc3 d6?? 2.Nd5 e5 3.Nxc7
+               | fen:r1bqkbnr/pppp1p1p/2n5/4p2p/4P3/5N2/PPPP1PPP/RNB1KB1R:
+       figcaption After the moves 1.e4 e5,Nc6 2.Qh5,Nf3 g6,gxh5
 
-h3 More information
+h3 En-passant capture
 
 p.
-       Possible starting point Wikipedia page ?
+       Capturing en-passant is allowed under certain conditions.
+       If the opponent moved a pawn allowing such a capture (once or twice),
+       then (to take it) you must capture en-passant at the first move of your turn.
+       After that, if (and only if) there is another en-passant capture available
+       you can play it on the second move.
+
+p.
+       Note: if a pawn 2-squares jump was made and then a piece landed at the
+       en-passant square at the second move, a pawn capture on this square
+       takes only the piece.
+       And, if a pawn advanced twice then en-passant capture
+       on its first movement is impossible (the pawn is now "too far").
+
+h3 More information
+
+p
+       | See for example the 
+       a(href="https://www.chessvariants.com/multimove.dir/marseill.html")
+               |       Marseillais Chess
+       |  page on chessvariants.com.