How do you counter the Scandinavian Defense
You might try the suggestions in My First Chess Opening Repertoire for White.
https://www.newinchess.com/media/wysiwyg/product_pdf/9033.pdf
https://chessbookreviews.wordpress.com/tag/vincent-moret/
Some other possibilities are described in Opening Repertoire 1 e4
https://www.newinchess.com/media/wysiwyg/product_pdf/7819.pdf
and A Simple Chess Opening Repertoire for White.
http://www.jeremysilman.com/shop/pc/A-Simple-Chess-Opening-Repertoire-for-White-76p3916.htm
http://www.gambitbooks.com/pdfs/A_Simple_Chess_Opening_Repertoire_for_White.pdf
Perhaps it would be a good idea to start with Discovering Chess Openings, a book about opening principles.
https://web.archive.org/web/20140627114655/http://www.chesscafe.com/text/hansen91.pdf

Does not matter. Just resign if someone plays the scandi against you. It shows they have the balls to buck convention and they are not afraid to take you on head to head. Chances will on their side. So save yourself the time. Resign, go make another cup,of coffee, or pour another ice cold beer during that time, and go start another game with someone else.

This is the opening choice of Neural Networks against Scandi.
https://www.chess.com/forum/view/chess-openings/opening-novelty-by-neural-networks
Queen and LSB is very powerful in Scandi. Plan is to restrict these two powerful pieces.
When trying to play the Scandinavian without knowing anything I found 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 easier and somewhat safer to play than the main lines with d4.

When trying to play the Scandinavian without knowing anything I found 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 easier and somewhat safer to play than the main lines with d4.
Yes, you can skip complicated variations and play solid temporarily.
In one day, if you need to squeeze the best possible chance in any phase of the game, studying classical lines is a good choice.
When trying to play the Scandinavian without knowing anything I found 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 easier and somewhat safer to play than the main lines with d4.
Yes, you can skip complicated variations and play solid temporarily.
In one day, if you need to squeeze the best possible chance in any phase of the game, studying classical lines is a good choice.
That was true 30 years ago. Nowadays, with the databases, the numbers of games played in the main lines, knowledge increasing and computers finding absolute equality in most of those main lines, sound sidelines are a perfectly reasonable choice.

When trying to play the Scandinavian without knowing anything I found 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 easier and somewhat safer to play than the main lines with d4.
Yes, you can skip complicated variations and play solid temporarily.
In one day, if you need to squeeze the best possible chance in any phase of the game, studying classical lines is a good choice.
That was true 30 years ago. Nowadays, with the databases, the numbers of games played in the main lines, knowledge increasing and computers finding absolute equality in most of those main lines, sound sidelines are a perfectly reasonable choice.
Not true.
You will almost always see main lines in majority of top tournments. Cos human cant study billions and trillions, trillions of positions like machine.
For example in this simple 7 pieces common KRPP vs KRP endgame, you need to study nearly 1 trillion positions to play accurately as computer.
It is showing just 7 pieces, not 32 pieces.
When trying to play the Scandinavian without knowing anything I found 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 easier and somewhat safer to play than the main lines with d4.
Yes, you can skip complicated variations and play solid temporarily.
In one day, if you need to squeeze the best possible chance in any phase of the game, studying classical lines is a good choice.
That was true 30 years ago. Nowadays, with the databases, the numbers of games played in the main lines, knowledge increasing and computers finding absolute equality in most of those main lines, sound sidelines are a perfectly reasonable choice.
Not true.
You will almost always see main lines in majority of top tournments. Cos human cant study billions and trillions, trillions of positions like machine.
For example in this simple 7 pieces common KRPP vs KRP endgame, you need to study nearly 1 trillion positions to play accurately as computer.
It is showing just 7 pieces, not 32 pieces.
This doesn't make any sense, sorry.

When trying to play the Scandinavian without knowing anything I found 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 easier and somewhat safer to play than the main lines with d4.
Yes, you can skip complicated variations and play solid temporarily.
In one day, if you need to squeeze the best possible chance in any phase of the game, studying classical lines is a good choice.
That was true 30 years ago. Nowadays, with the databases, the numbers of games played in the main lines, knowledge increasing and computers finding absolute equality in most of those main lines, sound sidelines are a perfectly reasonable choice.
Not true.
You will almost always see main lines in majority of top tournments. Cos human cant study billions and trillions, trillions of positions like machine.
For example in this simple 7 pieces common KRPP vs KRP endgame, you need to study nearly 1 trillion positions to play accurately as computer.
It is showing just 7 pieces, not 32 pieces.
This doesn't make any sense, sorry.
Then what does machine tell you?
Does machine speak to you with explaination?
You can see those data and millions of positional analysis from machines only.

I recommend "Beating Unusual Chess Defenses: 1.e4".
The book is 10 years old and a bit dated, but the recommendation against the Scandinavian still holds up today. Same can be said about the Alekhine. The Pirc you would likely need to find an alternative solution. I play 3.f3 against that now.
Does machine speak to you with explaination?
You can see those data and millions of positional analysis from machines only.
Most humans do have a brain to navigate through the data computers give.

Does machine speak to you with explaination?
You can see those data and millions of positional analysis from machines only.
Most humans do have a brain to navigate through the data computers give.
Are n't the data that I show you?
Can you interpret those data?
Does machine speak to you with explaination?
You can see those data and millions of positional analysis from machines only.
Most humans do have a brain to navigate through the data computers give.
Are n't the data that I show you?
Can you interpret those data?
What are you talking about to begin with ? The rook endgame you gave, you don't need a machine to know it's winning, you don't need a machine to learn how to win it.