Use ii in Betza notation for 3rd-rank Pawn push

[xboard.git] / moves.c

diff --git a/moves.c b/moves.c
index a66c2e0..0144486 100644 (file)
--- a/moves.c
+++ b/moves.c
@@ -5,7 +5,7 @@
  * Massachusetts.
  *
  * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005, 2006,
- * 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
+ * 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Free Software Foundation, Inc.
  *
  * Enhancements Copyright 2005 Alessandro Scotti
  *
@@ -287,7 +287,7 @@ MovesFromString (Board board, int flags, int f, int r, int tx, int ty, int angle
     while(*p) {                  // more moves to go
        int expo = 1, dx, dy, x, y, mode, dirSet, ds2=0, retry=0, initial=0, jump=1, skip = 0, all = 0;
        char *cont = NULL;
-       if(*p == 'i') initial = 1, desc = ++p;
+       while(*p == 'i') initial++, desc = ++p;
        while(islower(*p)) p++;  // skip prefixes
        if(!isupper(*p)) return; // syntax error: no atom
        dx = xStep[*p-'A'] - '0';// step vector of atom
@@ -372,6 +372,7 @@ MovesFromString (Board board, int flags, int f, int r, int tx, int ty, int angle
        if(isdigit(*++p)) expo = atoi(p++);           // read exponent
        if(expo > 9) p++;                             // allow double-digit
        desc = p;                                     // this is start of next move
+       if(initial == 2) { if(board[r][f] != initialPosition[r-2*his+3][f]) continue; } else
        if(initial && (board[r][f] != initialPosition[r][f] ||
                       r == 0              && board[TOUCHED_W] & 1<<f ||
                       r == BOARD_HEIGHT-1 && board[TOUCHED_B] & 1<<f   ) ) continue;
@@ -408,8 +409,8 @@ MovesFromString (Board board, int flags, int f, int r, int tx, int ty, int angle
                if(y < 0 || y >= BOARD_HEIGHT) break; // vertically off-board: always done
                if(x <  BOARD_LEFT) { if(mode & 128) x += BOARD_RGHT - BOARD_LEFT, loop++; else break; }
                if(x >= BOARD_RGHT) { if(mode & 128) x -= BOARD_RGHT - BOARD_LEFT, loop++; else break; }
-               if(board[y][x] == DarkSquare) break;  // black squares are supposed to be off board
                if(j) { j--; continue; }              // skip irrespective of occupation
+               if(board[y][x] == DarkSquare) break;  // black squares are supposed to be off board
                if(!jump    && board[y - vy + vy/2][x - vx + vx/2] != EmptySquare) break; // blocked
                if(jump > 1 && board[y - vy + vy/2][x - vx + vx/2] == EmptySquare) break; // no hop
                if(x == f && y == r && !loop) occup = 4;     else // start square counts as empty (if not around cylinder!)
@@ -1673,10 +1674,11 @@ CheckTest (Board board, int flags, int rf, int ff, int rt, int ft, int enPassant
        }
        ep = board[EP_STATUS];
        if( captured == WhiteLion || captured == BlackLion ) { // [HGM] lion: Chu Lion-capture rules
-           ChessSquare victim = killX < 0 ? EmptySquare : trampled;
+           ChessSquare victim = saveKill < 0 ? EmptySquare : trampled;
            if( (board[rt][ft] == WhiteLion || board[rt][ft] == BlackLion) &&           // capturer is Lion
                (ff - ft > 1 || ft - ff > 1 || rf - rt > 1 || rt - rf > 1) &&           // captures from a distance
-               (victim == EmptySquare || victim == WhitePawn || victim == BlackPawn) ) // no or worthless 'bridge'
+               (victim == EmptySquare || victim == WhitePawn || victim == BlackPawn    // no or worthless 'bridge'
+                                    || victim == WhiteCobra || victim == BlackCobra) ) // (Pawn or Go Between)
                     board[EP_STATUS] = EP_ROYAL_LION; // on distant Lion x Lion victim must not be pseudo-legally protected
        }
     }
@@ -1829,7 +1831,10 @@ LegalityTest (Board board, int flags, int rf, int ff, int rt, int ft, int promoC
         if(cl.kind != NormalMove || promoChar == NULLCHAR || promoChar == '=') return cl.kind;
         if(promoChar != '+')
             return CharToPiece(promoChar) == EmptySquare ? ImpossibleMove : IllegalMove;
-        if(PieceToChar(CHUPROMOTED board[rf][ff]) != '+') return ImpossibleMove;
+        if(PieceToChar(CHUPROMOTED board[rf][ff]) != '+') {
+           if(PieceToChar(CHUPROMOTED (board[rf][ff] < BlackPawn ? WhitePawn : BlackPawn)) != '.')
+           return ImpossibleMove;
+       }
         return flags & F_WHITE_ON_MOVE ? WhitePromotion : BlackPromotion;
     } else
     if(gameInfo.variant == VariantShogi) {
@@ -2137,8 +2142,10 @@ Disambiguate (Board board, int flags, DisambiguateClosure *closure)
     if (closure->kind == WhitePromotion || closure->kind == BlackPromotion) {
         if(c == NULLCHAR) { // missing promoChar on mandatory promotion; use default for variant
             if(gameInfo.variant == VariantShatranj || gameInfo.variant == VariantCourier ||
-               gameInfo.variant == VariantMakruk || gameInfo.variant == VariantASEAN)
+               gameInfo.variant == VariantMakruk)
                 c = PieceToChar(BlackFerz);
+            else if(gameInfo.variant == VariantASEAN)
+                c = PieceToChar(BlackRook);
             else if(gameInfo.variant == VariantGreat)
                 c = PieceToChar(BlackMan);
             else if(gameInfo.variant == VariantGrand)