 |
fix a bug in FEN en passant parsing, handle en passant takes - chess-puzzles - … |
 |
git clone git://git.codemadness.org/chess-puzzles |
 |
Log |
|
Files |
|
Refs |
|
README |
|
LICENSE |
|
--- |
|
commit 10e231516543327f556abc8b73c31c1e114ede48 |
|
parent f2415a87c11df764bacefa67d70efd1c57bd66ff |
|
Author: Hiltjo Posthuma <[email protected]> |
|
Date: Wed, 20 Dec 2023 23:53:58 +0100 |
|
|
|
fix a bug in FEN en passant parsing, handle en passant takes |
|
|
|
Add a few tests for them. |
|
|
|
Diffstat: |
|
M fen.c | 8 ++++++-- |
|
M tests.sh | 10 +++++++++- |
|
|
|
2 files changed, 15 insertions(+), 3 deletions(-) |
|
--- |
|
diff --git a/fen.c b/fen.c |
|
@@ -549,8 +549,7 @@ next: |
|
break; |
|
case 3: /* en passant square */ |
|
if (*s >= 'a' && *s <= 'h' && |
|
- *(s + 1) >= '1' && *(s + 1) >= '6') { |
|
- |
|
+ *(s + 1) >= '1' && *(s + 1) <= '6') { |
|
square[0] = *s; |
|
square[1] = *(s + 1); |
|
square[2] = '\0'; |
|
@@ -599,6 +598,7 @@ next: |
|
/* process moves */ |
|
square[2] = '\0'; |
|
x = y = x2 = y2 = -1; |
|
+ |
|
for (s = moves; *s; s++) { |
|
if (*s == ' ') |
|
continue; |
|
@@ -677,6 +677,10 @@ next: |
|
black_can_castle[0] = 0; |
|
} |
|
|
|
+ /* taken en passant? */ |
|
+ if (x2 == enpassantsquare[0] && y2 == enpassantsquare[… |
|
+ place(0, x2, piece == 'P' ? y2 + 1 : y2 - 1); |
|
+ |
|
/* the en passant square resets after a move */ |
|
enpassantsquare[0] = -1; |
|
enpassantsquare[1] = -1; |
|
diff --git a/tests.sh b/tests.sh |
|
@@ -6,7 +6,7 @@ testfen() { |
|
fen="$2" |
|
moves="$3" |
|
|
|
- output=$(./fen_to_fen "$fen" "$moves") |
|
+ output=$(./fen -o fen "$fen" "$moves") |
|
if test "$output" = "$expect"; then |
|
echo "OK" |
|
else |
|
@@ -78,3 +78,11 @@ testfen 'r4k1r/ppp1p1p1/8/2Pp1p2/6P1/4P2p/PP1P1P1P/R3K2R w -… |
|
testfen 'r4k1r/p1ppp1p1/8/1pP2p2/6P1/4P2p/PP1P1P1P/R3K2R w - b6 0 9'\ |
|
'r4k1r/ppppp1p1/8/2P2p2/6P1/4P2p/PP1P1P1P/R3K2R b - - 0 8'\ |
|
'b7b5' |
|
+# white takes en passant |
|
+testfen 'rnbqkbnr/pppp1pp1/4P3/7p/8/8/PPP1PPPP/RNBQKBNR b KQkq - 0 3'\ |
|
+ 'rnbqkbnr/pppp1pp1/8/3Pp2p/8/8/PPP1PPPP/RNBQKBNR w KQkq e6 0 3'\ |
|
+ 'd5e6' |
|
+# black takes en passant |
|
+testfen 'rnbqkbnr/ppppppp1/8/8/3P4/4P1p1/PPP2P1P/RNBQKBNR w KQkq - 0 4'\ |
|
+ 'rnbqkbnr/ppppppp1/8/8/3P2Pp/4P3/PPP2P1P/RNBQKBNR b KQkq g3 0 3'\ |
|
+ 'h4g3' |
