Do any openings result in a lost game for black? Based on this comment I'd like to know which openings, if any, are considered unplayable (i.e. lost) for black? My own understanding is that in some opening lines it's harder for black to equalise, but are there any that are completely lost, assuming that white plays perfectly?
Your question is somewhat hard to answer, because it depends on what you consider "an opening" to be.

Obviously, there are openings where black loses -- consider the typical Scholar's Mate, 1.e4 e5 2.Bc4 Nc6 3.Qh5 Nf6 4.Qxf7#.

But, you will probably think, nobody with any knowledge of the game will play like that! And that's reasonable. But it is an opening, isn't it?

And if you mean "are there any commonly played, theoretical openings where Black loses?" then there are very few indeed -- after all, why would black play such an opening? Once some line is refuted, almost everybody stops playing it.

Katerina said:


  Ultimately, a lot of openings in chess will result in black losing, if both players play perfectly. It might not be your fault, just that black starts off one tempo behind.


I don't agree with that at all. Chess is considered by most people to be a draw at best play, and commonly played openings aren't losing. They may be slightly worse, but that's not the same as losing, not even with perfect play -- it just means that black will have to defend most of the game without much chance of winning himself.