private Game evaluateNextInstruction(String nextCommand) {
		if (nextCommand.equalsIgnoreCase(NEXT)) {
			return pgnViewer.playNextTurn();
		} else if (nextCommand.equalsIgnoreCase(PREVIOUS)) {
			return pgnViewer.undoCurrentTurn();
		} else if (!nextCommand.equalsIgnoreCase(EXIT)) {
			Util.print("Unknown command: " + nextCommand);
			return this.game;
		} else {
			return this.game;
		}
	}