improvised openings

Hi! I'm new here and I'm a "chess newbie", so sorry if what I write may sounds silly. Also, apologize for my English :)

I would like to know how you choose the right opening. Usually instructional videos talk about the x opening versus the y opening, and what happen if you want to choose the z opening.. but I noticed that some players just start to play on own way, and sometimes crazy moves make unexpected situations.. in the video lessons everything seems so clear, it is like oblivious that if your opponent make "that move", his has choosen a certain type of opening ... while in the reality he has just move a piece and he is inventing his own opening..

it that never happend to you? what do you do in this case? you keep on building a classical opening or start to improvise something new based on your opponent?

I feel like the most important point for new players to know about opponents who play seemingly random opening moves is that you can't punish all bad opening moves immediately. Usually punishment comes in the middlegame where you make use of your advantage in space, development and/or king safety. Sometimes this is after move 10.

What usually starts the punishment is a pawn break. Pawn breaks open lines for your pieces, so this favors the side with better development. When pieces start attacking it's usually too late to run away with the king, the king should be castled before the action starts (particularly if you can play a pawn break in the center).

Basically, following the opening principals better than your opponent will give you the advantage after you've finished your development. If you don't know the opening principals yet, this will be helpful to you:
https://www.chess.com/article/view/the-principles-of-the-opening

Of course not all bad openings are easily punished. Which pawn break to play (if you have options) and the timing are a matter of experience and learning. Also sometimes the position is very locked and your main advantage may be space. This can be very hard to grind into a win unless you're already a strong player. So don't be too frustrated with opponents like this... the opening is the most forgiving phase of the game. Better to spend your energy learning tactics and endgames.

So the trick is "keep on building follow the main line, wait for the right moment and be patient" :D thanks for your answer.. another dubt is.. how about the "queen players"? some people forgot totally about the the other 15 pieces and they make the game extremly boring and, in my opinion, no-sportsmanlike .. it is very difficult to follow a main line while their queen sightseen on my board area :(

Oh, well a main line is not moves for your side only. An opening line is both players agreeing together to play a series of moves. But yes, be patient and just keep developing.

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Players who attack with the queen early depend on you to miss their threats.

Each time the queen moves, trace the lines of attack (up to 8 lines total) with your eyes. Which pieces is the queen attacking? What moves can put you in check?

When you find the threat, don't play the first defensive move that comes to mind. Try to find a way to defend the threat while continuing to move all your knights and bishops off the back rank.

Here is a common one:

At your level players don't understand the ideas, position, pawn structures and where piece belongs, because they lack experience and skills. They only can memorize some lines and traps. You can beat them all by just applying general principles and don't be greedy. Thats is applicable believe it or not even at way higher level than yours.

Develop pieces, castle , open lines , watch out on every move if something is undefended and just wait for opponent to give you free pieces. That's it. You don't have to have a plan. Just move something, attack something etc. 

Focus your study time on tactics and endgames. Look some video lessons on middle game ideas, strategy, pawns , watch games, learn patterns.

I thought the opening was the most important part but it does not seems 100% true.. thanks a lot for your answer, they really help me !

AIM-AceMove I took a look at one of your post about a game vs a 1005 opponent.. that behavior is exactly what I was talking about... why you played Kf7? just to provokate him?

It's both educational and fun for me and for him. It's unrated after all. If he is angry then that's entirely his problem. Basically he is having free lesson just by playing me -  but why not make it more interesting, equal and instructive. He learns a lot what is wrong and what is good, if he sit and study & analyze the game or simply just ask me couple of question what he did wrong etc. But judging from his moves i would probably not help him.

For me i see what type of mistakes lower rated makes, how they judge position, what decision they make - agressive one imidiately, more calm and position or just ignore etc.

I would like to know more high rated player as you.. unfortunately when I challenge an high rated player he declines or he just kill me like for humiliet me ahah.. I understad there are lots of low rated people who are too much ambitious or hothead but, for me, I just would like to improve learning from experienced players!

It does not matter much which openings you play until you are much stronger.  However it is generally believed that beginners and novices will learn fastest by playing 1. e4 e5 when they first take up the game.

Another chess newbie here.

You should definitely stick to the principles first instead of revising the best possible responses to all of white's possible first moves. However, most games usually begin with white moving his/her queen's pawn/king's pawn forward two spaces, so learning responses to those (and understanding how they work) can be pretty useful.

Some tips:

• Protect your two center pawns and attack the other's. Although some people argue that you don't need to use the center pawns to control the center, losing them can be pretty tough to deal with.
• If the opponent doesn't seem to be pushing any of his/her two center pawns two spaces forward, you should take the opportunity to do so yourself. However, be careful - he might be setting up a trap to take one of your center pawns!
• If there are no other disadvantages to castling kingside, castle kingside instead of queenside. Since there are less pieces to get out of the way, castling kingside is faster (I think).

thank you for all answers.. i understand what you say in fact i have much more problems on my middlegame.. especially when you use opening that i do nkg know... like indian defence.. any time i try to use this opening a mess up everything..