diff --git a/src/core/game_state.gd b/src/core/game_state.gd
index 32deb1e..fadfaa3 100644
--- a/src/core/game_state.gd
+++ b/src/core/game_state.gd
@@ -44,8 +44,8 @@ func get_partner(player_idx: int) -> int:
 		return t.teammate_of(player_idx)
 	return -1
 
-func get_hand(player_idx: int) -> Array:
-	return player_hands[player_idx]
+func get_hand(player_idx: int) -> Array[Card]:
+	return player_hands[player_idx] as Array[Card]
 
 func remove_cards_from_hand(player_idx: int, cards: Array) -> void:
 	var hand: Array = player_hands[player_idx]
diff --git a/src/core/move_generator.gd b/src/core/move_generator.gd
index bc13cca..86d2abe 100644
--- a/src/core/move_generator.gd
+++ b/src/core/move_generator.gd
@@ -45,7 +45,10 @@ static func _gen_pairs(sorted: Array[Card], results: Array[HandEvaluator.Evaluat
 		if not rank_counts.has(rk): rank_counts[rk] = [] as Array[Card]
 		rank_counts[rk].append(c)
 	for rk in rank_counts:
-		var cards: Array[Card] = rank_counts[rk]
+		var src: Array = rank_counts[rk]
+		var cards: Array[Card] = []
+		for c in src:
+			cards.append(c)
 		if cards.size() >= 2:
 			var ep := HandEvaluator.evaluate(cards.slice(0, 2), current_rank, config)
 			if ep != null: results.append(ep)
@@ -57,7 +60,10 @@ static func _gen_triples(sorted: Array[Card], results: Array[HandEvaluator.Evalu
 		if not rank_counts.has(rk): rank_counts[rk] = [] as Array[Card]
 		rank_counts[rk].append(c)
 	for rk in rank_counts:
-		var cards: Array[Card] = rank_counts[rk]
+		var src: Array = rank_counts[rk]
+		var cards: Array[Card] = []
+		for c in src:
+			cards.append(c)
 		if cards.size() >= 3:
 			var ep := HandEvaluator.evaluate(cards.slice(0, 3), current_rank, config)
 			if ep != null: results.append(ep)
@@ -80,7 +86,10 @@ static func _gen_bombs(sorted: Array[Card], results: Array[HandEvaluator.Evaluat
 		if not rank_counts.has(rk): rank_counts[rk] = [] as Array[Card]
 		rank_counts[rk].append(c)
 	for rk in rank_counts:
-		var cards: Array[Card] = rank_counts[rk]
+		var src: Array = rank_counts[rk]
+		var cards: Array[Card] = []
+		for c in src:
+			cards.append(c)
 		if cards.size() >= 4:
 			var ep := HandEvaluator.evaluate(cards.slice(0, 4), current_rank, config)
 			if ep != null: results.append(ep)
@@ -120,8 +129,12 @@ static func _find_pairs(hand: Array[Card]) -> Array[Array]:
 		if not rank_groups.has(rk): rank_groups[rk] = [] as Array[Card]
 		rank_groups[rk].append(c)
 	for rk in rank_groups:
-		if rank_groups[rk].size() >= 2:
-			result.append(rank_groups[rk].slice(0, 2) as Array[Card])
+		var src: Array = rank_groups[rk]
+		if src.size() >= 2:
+			var pair: Array[Card] = []
+			for c in src.slice(0, 2):
+				pair.append(c)
+			result.append(pair)
 	return result
 
 static func _card_in(cards: Array[Card], target: Card) -> bool: