Test Your Opening Knowledge - Typical Positions

I think some studies better than books (endgame study etc. )

@PArnaudov

Thanks for making this study. I think it would be better if it were more in depth and not simply 1 correct choice in various positions. I'll give an example of what I mean.

In Chapter 1 Queen's Indian:

The "Correct" move is d5 immediately giving away a pawn for the initiative. Fair enough, but I don't really see the initiative that white has here. If many trades happen on d5 then yes fair enough I see some attacking potential as white. However, black can simply castle and then white is forced to push d6 and this pawn becomes a real double-edged sword in the position as it is unclear if it is a strength or weakness. So the black bishop goes to f6 then what? White must get that bishop out and prepare to castle so I'm thinking Bc4. However at this point black can play g5 and I don't see at all where white has the initiative at this point black is at least equal if not a tiny bit better.

Alternatively would it not make sense to simply go back to the start of the position and simply play a move such as Bd3? This preapres to castle while developing the bishop and after the c pawns are traded and as you suggest that rook is swung over to the c8 square harrasing the queen she can simply go to d2. The d2 square is a fine square for the queen. Both sides castle. White has a nice solid center here. White is ready to castle material is equal. White is favorable

I feel the alternate line I suggested white has better winning chances than offering the pawn that black doesn't need to accept.

Thanks for your answer lurarose.
I am glad that you like the exercises.
In Chapter 1. Black wants to continue with 1...cxd4 opening the c-file and then get some counterplay there. The move you suggested 1.Bd3 is perfectly playable, but the theory considers 1.d5 stronger and more ambitious
1.d5 was played by Radjabov, Mamedjarov, Firoudja, etc... In all games, 1...exd5 was played. In such structures, if you allow White to follow with 2.Rd1 or 2.dxe6 followed by 3.Bg3 White is better.

Regarding the question for the recommendations. Probably there are some good studies, but I prefer books, databases, etc...
I have a website where we publish different educational materials. Most of the content is paid, but you can find a lot of free materials as well - www.modern-chess.com/

@PArnaudov Thanks for the reply, but what's wrong with a simple Bd3 in prep for castling? I don't see how the white rook threatening the queen once and moving her to d2 is a problem as d2 is a fine square for the queen.

There is nothing wrong with 1.Bd3. It is even the most played move in this position. Then the game usually continues 1...Qc8 with two ideas 2...c4 or 2...cxd4. In those types of positions if you manage to block the bishop on b7 you get a significant advantage. That's why 1.d5! is the strongest move in the position. About d2-square, the queen is not very well placed there, because is not defending the e4 pawn and Black starts harassing it with Nf6, trying to provoke e4-e5. Of course, is a matter of taste and you can continue with 1.Bd3, but the theory considers 1.d5! stronger.