In chess, I mostly play defensive because when I play aggressive, game lasts very short and I usually start losing quickly.
But here are some things I learned, I am not sure how correct they are:
1. Make pawn structure where there are only 2 undefended pawns
To me, it seems like its easier to defend 2 pawns than to defend 3 or 4 or 5.
So I make version of stonewall where I go
A3, B2, C3, D4, E3, F2, G3, H4
In this structure, only pawns B2 and F2 are undefended by any pawns.
There are some other versions of formation too, but usually I set the goal to make greatest number of pawns protect each other.
2. Develop all pieces
I really hate when some piece ends up blocked by my own pawns and becomes useless to me.
Thats why I try to get all pieces out early.
Which brings me to my next point.
3. Trading pieces
It seems that if I trade piece for piece, the game develops further.
Of course, I only trade pieces of equal value or if it benefits me to trade.
4. Control center
Its very important to control center so that enemy cant put pieces there.
5. Capture towards center
It seems to me that in most cases, when capturing pawns with pawns, you are supposed to move towards center.
6. You also have the option not to capture
Just because pawn attacks your pawn, it doesnt mean that you should capture it with your pawn.
Sometimes its more beneficial not to capture.
7. Sacrifice pieces
Sometimes its good to offer a piece for a pawn, to break through defense.
Now, I still cant beat computer at hardest difficulty, because it seems that its incapable of making a mistake, while I am very much capable of making mistakes.
Computer also has a very strong defense. Often I have to sacrifice 3 or 4 pieces just to get to king and I still cant checkmate but at best I can force draw.
Are there any other tips in chess? Am I missing something?