From e816a9d881f5cb3bc38e6d65e2b9d2bf4764513b Mon Sep 17 00:00:00 2001
From: Mariano Gappa <mariano@movio.co>
Date: Tue, 7 Jan 2020 11:21:21 +1300
Subject: [PATCH] Fixes bug with Pawn threat detection.

---
 api/chess.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/api/chess.go b/api/chess.go
index a03472d..2372843 100644
--- a/api/chess.go
+++ b/api/chess.go
@@ -479,9 +479,9 @@ func (g game) xyThreatenedBy(sq xy, owner color, checkAllThreats bool) []piece {
 	}
 
 	// Pawns
-	pawnXYs := []xy{sq.add(xy{-1, -1}), sq.add(xy{1, -1})}
+	pawnXYs := []xy{sq.add(xy{-1, 1}), sq.add(xy{1, 1})}
 	if owner == colorWhite {
-		pawnXYs = []xy{sq.add(xy{-1, 1}), sq.add(xy{1, 1})}
+		pawnXYs = []xy{sq.add(xy{-1, -1}), sq.add(xy{1, -1})}
 	}
 	if piece, ok := g.pieces[opponent][pawnXYs[0]]; ok && piece.pieceType == piecePawn {
 		pieces = append(pieces, piece)