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Resetting flags every promo piece type. #113

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Resetting flags every promo piece type. #113

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2 changes: 2 additions & 0 deletions engine.go
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Original file line number Diff line number Diff line change
Expand Up @@ -131,6 +131,8 @@ func standardMoves(pos *Position, first bool) []Move {
if (p == WhitePawn && Square(s2).Rank() == Rank8) || (p == BlackPawn && Square(s2).Rank() == Rank1) {
for _, pt := range promoPieceTypes {
m.promo = pt
m.tags = 0 // Reset tags every promo piece type

addTags(&m, pos)
if !m.HasTag(inCheck) {
// Copy the valid move to the array
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20 changes: 20 additions & 0 deletions game_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,26 @@ import (
"time"
)

func TestPromo_Knight_Check(t *testing.T) {
fenStr := "k7/4P3/8/8/8/8/8/K7 w - - 0 1"
fen, err := FEN(fenStr)
if err != nil {
t.Fatal(err)
}
g := NewGame(fen)

knightPromoMove := g.ValidMoves()[6]

if knightPromoMove.Promo() != Knight {
t.Fatal("this promo move should be Knight")
}

if knightPromoMove.HasTag(Check) {
t.Fatal("knight promo move should not have check")
}
println(validMoves)
}

func TestCheckmate(t *testing.T) {
fenStr := "rn1qkbnr/pbpp1ppp/1p6/4p3/2B1P3/5Q2/PPPP1PPP/RNB1K1NR w KQkq - 0 1"
fen, err := FEN(fenStr)
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