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[board] When loading a FEN string, start with no castling rights

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The default value of the castle::Rights struct is with all rights granted. When
loading a FEN string, start with none and add to it.
This commit is contained in:
Eryn Wells 2025-06-18 08:26:29 -07:00
parent 9972ce94d0
commit 933924d37a
1 changed files with 2 additions and 3 deletions
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5
board/src/fen.rs
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@ -229,9 +229,8 @@ impl FromFenStr for Board {
let castling_rights = fields
.next()
.ok_or(FromFenStrError::MissingField(Field::CastlingRights))?;
if castling_rights == "-" {
board.revoke_all_castling_rights();
} else {
board.revoke_all_castling_rights();
if castling_rights != "-" {
for ch in castling_rights.chars() {
match ch {
'K' => board.grant_castling_right(Color::White, Wing::KingSide),