public boolean chargeForDevCard() {
		if (! resForDevCard()) return false;
		for (int i = 0; i < BRICK_DEV; i++) _hand.remove(Resource.Brick);
		for (int i = 0; i < ORE_DEV; i++) _hand.remove(Resource.Ore);
		for (int i = 0; i < SHEEP_DEV; i++) _hand.remove(Resource.Sheep);
		for (int i = 0; i < TIMBER_DEV; i++) _hand.remove(Resource.Timber);
		for (int i = 0; i < WHEAT_DEV; i++) _hand.remove(Resource.Wheat);
		return true;
	}