diff --git a/src/server/game/mod/chess/Chess.go b/src/server/game/mod/chess/Chess.go
index 5bbd5de0..23385ce8 100644
--- a/src/server/game/mod/chess/Chess.go
+++ b/src/server/game/mod/chess/Chess.go
@@ -360,7 +360,7 @@ func (cb *ChessBorad) GetChessFromBuff(Chess int) error {
 func (cb *ChessBorad) LosePart(PartId int, Num int) error {
 	v, ok := cb.PartBag.List[PartId]
 	if !ok || v.Num < Num {
-		return errors.New("part id not exist or num not enough")
+		return errors.New("part id not exist or num not enough" + fmt.Sprintf("PartId: %d, Num: %d, ok: %v", PartId, Num, ok))
 	}
 	v.Num -= Num
 	cb.PartBag.List[PartId] = v