I fail to understand the point here. I got both endings in less than 6 minutes, combined. Was there some awesome interaction if I played chess? There's nothing here. I'm not sure how this is a puzzle. Do A or do B, either way, game over.
Also, starting with music before asking if I want it gets every single game a 1 star rating every single time.
The timed stuff is not only counter to the concept of the game (exploration...), they prevent the player from even looking around, seeing the scenery. And they are too strict, too. Also, you can stick your head underwater ... but not take it out?? Bah. 1 star.