diff --git a/nakama/go-modules/main.go b/nakama/go-modules/main.go
index 3cc8799..4b5bc5a 100644
--- a/nakama/go-modules/main.go
+++ b/nakama/go-modules/main.go
@@ -736,8 +736,8 @@ func validateChessMove(fenStr, from, to, promotion string) MoveResult {
 
 	game := chess.NewGame(fen)
 
-	// Find the move in valid moves
-	found := false
+	// Find and execute the move
+	var validMove *chess.Move
 	for _, move := range game.ValidMoves() {
 		if move.S1().String() == from && move.S2().String() == to {
 			// Check promotion
@@ -748,21 +748,17 @@ func validateChessMove(fenStr, from, to, promotion string) MoveResult {
 					continue
 				}
 			}
-			found = true
+			validMove = &move
 			break
 		}
 	}
 
-	if !found {
+	if validMove == nil {
 		return result
 	}
 
-	// Make the move using MoveStr (UCI format)
-	moveStr := from + to
-	if promotion != "" {
-		moveStr += promotion
-	}
-	if err := game.MoveStr(moveStr); err != nil {
+	// Make the move
+	if err := game.Move(validMove); err != nil {
 		return result
 	}