diff -r 6008840b859e -r 6a26114297a1 src/rules/pawn.c
--- a/src/rules/pawn.c	Sat Mar 29 16:53:58 2014 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,97 +0,0 @@
-/*
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
- *
- * Copyright 2014 Mike Becker. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *   1. Redistributions of source code must retain the above copyright
- *      notice, this list of conditions and the following disclaimer.
- *
- *   2. Redistributions in binary form must reproduce the above copyright
- *      notice, this list of conditions and the following disclaimer in the
- *      documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include "pawn.h"
-#include "rules.h"
-
-_Bool pawn_chkrules(Board board, Move *move) {
-    int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1);
-    
-    if (move->torow == (d < 0 ? 7 : 0)) {
-        if (move->promotion) {
-            uint8_t promopiece = move->promotion & PIECE_MASK;
-            if (!promopiece || promopiece == PAWN || promopiece == KING) {
-                return FALSE;
-            }
-        } else {
-            return FALSE;
-        }
-    } else {
-        if (move->promotion) {
-            return FALSE;
-        }
-    }
-    
-    if (move->capture) {
-        if (move->fromrow == move->torow + d && (
-            move->fromfile == move->tofile + 1 ||
-            move->fromfile == move->tofile - 1)) {
-
-            return mdst(board,move)
-                || (board[move->fromrow][move->tofile] & ENPASSANT_THREAT);
-        } else {
-            return FALSE;
-        }
-    } else {
-        if (move->fromfile == move->tofile) {
-            return (move->fromrow == move->torow + d) ||
-                (move->fromrow == (d < 0 ? 1 : 6) && /* advanced first move */
-                move->fromrow == move->torow + d*2);
-        } else {
-            return FALSE;
-        }
-    }
-}
-
-_Bool pawn_isblocked(Board board, Move *move) {
-    return mdst(board,move) && !move->capture;
-}
-
-int pawn_getlocation(Board board, Move *move) {
-    int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1);
-    
-    if (move->fromfile == POS_UNSPECIFIED) {
-        move->fromfile = move->tofile;
-    }
-    move->fromrow = move->torow + d;
-    if (move->fromrow > 6) {
-        return INVALID_POSITION;
-    } else {
-        /* advanced first move */
-        if (move->fromrow == (d < 0 ? 2 : 5) &&
-            msrc(board,move) != move->piece) {
-
-            move->fromrow += d;
-            if (move->fromrow > 6) {
-                return INVALID_POSITION;
-            }
-        }
-    }
-    return VALID_MOVE_SYNTAX;
-}