My test for image models is asking it to create an image showing chess openings. Both this model and Banana pro are so bad at it.

While the image looks nice, the actual details are always wrong, such as showing pawns in wrong locations, missing pawns, .. etc.

Try it yourself with this prompt: Create a poster to show opening game for Queen's Gambit to teach kids to play chess.

It almost nailed it for me (two squares have both white and black color). All pieces and the position look correct.

What move? Who's turn is it? Declined or accepted? Garbage in, garbage out.

In some cases I would agree with this, but image model releases including this one are beginning to incorporate and market the thinking step. It is not a reach at this point to expect the model to take liberties in order to deliver a faithful and accurate representation of your request. A model could still be accurate while navigating your lack of specificity.

Kasparov vs Karpov ‘87 Olympiad. Move 6

What do you mean? Parent clearly describes the Queen's Gambit. 1.d4 d5 2.c4 There is no room for ambiguity here.

King Indian Defense would be a better prompt as Queen's Gambit can now refer to e.g. some scene from Netflix series.