user7644: I have played chess so many times, understood tactics (pins, discovered check, overloading, deflection, skewer), but I never understood clearly the positional play.  I have noticed not many tutorials available that explains positional play.

What exactly is positional play? Why is it important? 
Please can you show some nice examples to understand the concept?

Sorry for being so naive, but very curious on this.

user13012: There are many aspects of positional play that are always mentioned. Put Rooks on open files, put knights on outpost squares, keep your pawns neat and tidy. But that is not enough to win if your opponent shows similar good sense.
A very important aspect of positional play is knowing which of your pieces to exchange and which to keep. Sometimes this leads to decisions that seem contradictory. Elizabeth Pahtz does a nice DVD on this topic for Chessbase
and you can get a free preview by going to this article on the Chessbase site.
In this she shows a very instructive game Smyslov-Reshevsky where making the favorable exchange is more important than preserving the pawn structure. Positional play is not always risk-free play.

user7657: Positional play is maneuvering for small advantages, like controlling the center with pieces and pawns, gradually improving your position and encroaching into enemy territory to gain a space advantage while at the same time minimizing your opponent's space and opportunities until you can utilize tactics for some kind of decisive result.  I like to use Nimzovitsch's term  prophylaxis for this, limiting your opponent's moves.  The closed openings, like the Queens's Gambit, are generally considered positional openings since the pieces don't come into contact with each other so soon as opposed to double king pawn openings, or open games, when early tactics can predominate. If you want concrete examples, in addition to looking at Nimzovitch's games, the orthodox advice is to "study the games of Capablanca, Smyslov and Karpov". You can find these on chessgames.com.

user18236: In the absence of any tactical justification, it is logical to:

Put your knight on e4 rather than on a1 because on e4 your knight would have much more influence on the game (it controls 8 squares) than on a1 where it controls only 2 squares.
Put your bishops on open diagonals, your rooks on open files, 7th rank... etc thus they will have maximum activity
Keep your pawns connected as long as possible because they are very simple targets for attacks when they are isolated, doubled... etc.

This system of thinking is in fact the root of positional play and you can see it in action when studying Capablanca games.
I recommend also Igor Smirnov's course "Grandmaster positional understanding". 

user7500: Tactics is the science of piece safety. Positional play is play involving 'piece activity' and 'pawn structure'.
If you are rated under 1300, positional play is not important because tactical advantages (material) are much greater than positional advantages (slightly better pawn structure). Once you reach 1500, however, positional play becomes every important because it is how games are won and lost, once players stop giving free pieces and pawns.

user13905: Positional play is the attempt to make make a small improvement in your position with every move. In the most simplistic sense this would involve making your worst piece more active, bringing pressure to bear on an important square, improving pawn structure or denying your opponent the opportunity to improve his position. 
If you watch a chess engine working you can see and feel how it accumulates a positional advantage with almost every move. It feels like being slowly strangled. Tactics emerge naturally from a strong positional advantage. I would often spend far too long looking for tactics before the position warranted it. Now I may sense the possibility of tactics but be unclear of the outcome. Often all that's needed to make a tactic work is making one more strong positional move.

user4418: Classically positional play is what is described in part 2 of Nimzowitsch's "My System". Part 1, The Elements, is more tactical in nature. It describes play in open files, using the 7th and 8th ranks, passed pawns, pins, discovered checks and a few other features.
Part 2, Position Play, deals with stuff like 

Fighting for the center, which you do by moving pawns and pieces (firstly knights and bishops, later rooks) so that they occupy, support or attack the center. 
Over protection of important points or squares, in the first instance central ones later they may be points important for attack or defence, is important because it strengthens those points. This in turn gives more freedom and flexibility to the pieces involved. They are not firmly tied down because other pieces are sharing the burden. And it gives prophylaxis. Because these points are over protected you are not going to get caught by a sudden attack from your opponent. 
Certain static features are described and discussed which have positional characteristics. Doubled and isolated pawns are usually positional weaknesses. Very occasionally they may have good features but mostly they are bad. The IQP (isolated queen's pawn) is covered in great depth. Depending on how the two sides play the IQP can be a dynamic attacking tool or it can be a static weakness which will eventually fall. 
The two bishops (when you have two bishops and your opponent has either two knights or one bishop and one knight) is positional plus because of the way they can work together. They can cut an impassable diagonal line across the board in the same way that a rook can cut such lines orthogonally.

Why are these concepts important? Well, when you first start playing you don't really know what to do with your pieces. As Nimzowitsch says you probably think you should get your pieces out, castle on the opposite to your opponent and then each of you should launch a pawn storm attack against your opponent's castled king. First one to break through wins. It can certainly be a lot of fun but it's just not going to work against somebody who has mastered a more positional way of playing. 
These positional concepts give you guidelines of how to play when the position doesn't call for a tactical solution. In some respects it gives you guidance of how to build up your position so that you can either start your own tactical attack or frustrate your opponent's tactical attack.
Mastering tactical and positional play will likely take you to somewhere round about the 2000 level, which is no mean feat. To make progress much beyond this level you will have to start to learn and understand when to break these positional guidelines.
My System has many examples and games which Nimzowitsch uses to illustrate his points. He also wrote a follow on book of more examples and games called Chess Praxis which is highly recommended for further study of positional play.

7644: <p>I have played chess so many times, understood tactics (pins, discovered check, overloading, deflection, skewer), but I never understood clearly the positional play.  I have noticed not many tutorials available that explains positional play.</p>

<ol>
<li>What exactly is positional play? Why is it important? </li>
<li>Please can you show some nice examples to understand the concept?</li>
</ol>

<p>Sorry for being so naive, but very curious on this.</p>
 13012: <p>There are many aspects of positional play that are always mentioned. Put Rooks on open files, put knights on outpost squares, keep your pawns neat and tidy. But that is not enough to win if your opponent shows similar good sense.</p>

<p>A very important aspect of positional play is knowing which of your pieces to exchange and which to keep. Sometimes this leads to decisions that seem contradictory. Elizabeth Pahtz does a nice DVD on this topic for Chessbase
and you can get a free preview by going to <a href="https://en.chessbase.com/post/elisabeth-paehtz-how-to-exchange-pieces" rel="nofollow noreferrer">this article on the Chessbase site</a>.</p>

<p>In this she shows a very instructive game Smyslov-Reshevsky where making the favorable exchange is more important than preserving the pawn structure. Positional play is not always risk-free play.</p>
 7657: <p>Positional play is maneuvering for small advantages, like controlling the center with pieces and pawns, gradually improving your position and encroaching into enemy territory to gain a space advantage while at the same time minimizing your opponent's space and opportunities until you can utilize tactics for some kind of decisive result.  I like to use Nimzovitsch's term  prophylaxis for this, limiting your opponent's moves.  The closed openings, like the Queens's Gambit, are generally considered positional openings since the pieces don't come into contact with each other so soon as opposed to double king pawn openings, or open games, when early tactics can predominate. If you want concrete examples, in addition to looking at Nimzovitch's games, the orthodox advice is to "study the games of Capablanca, Smyslov and Karpov". You can find these on chessgames.com.</p>
 18236: <p><strong>In the absence of any tactical justification,</strong> it is logical to:</p>

<ol>
<li><p>Put your knight on e4 rather than on a1 because on e4 your knight would have much more influence on the game (it controls 8 squares) than on a1 where it controls only 2 squares.</p></li>
<li><p>Put your bishops on open diagonals, your rooks on open files, 7th rank... etc thus they will have maximum activity</p></li>
<li><p>Keep your pawns connected as long as possible because they are very simple targets for attacks when they are isolated, doubled... etc.</p></li>
</ol>

<p>This system of thinking is in fact the root of positional play and you can see it in action when studying Capablanca games.</p>

<p>I recommend also Igor Smirnov's course "Grandmaster positional understanding". </p>
 7500: <p>Tactics is the science of piece safety. Positional play is play involving 'piece activity' and 'pawn structure'.</p>

<p>If you are rated under 1300, positional play is not important because tactical advantages (material) are much greater than positional advantages (slightly better pawn structure). Once you reach 1500, however, positional play becomes every important because it is how games are won and lost, once players stop giving free pieces and pawns.</p>
 13905: <p>Positional play is the attempt to make make a small improvement in your position with every move. In the most simplistic sense this would involve making your worst piece more active, bringing pressure to bear on an important square, improving pawn structure or denying your opponent the opportunity to improve his position. </p>

<p>If you watch a chess engine working you can see and feel how it accumulates a positional advantage with almost every move. It feels like being slowly strangled. Tactics emerge naturally from a strong positional advantage. I would often spend far too long looking for tactics before the position warranted it. Now I may sense the possibility of tactics but be unclear of the outcome. Often all that's needed to make a tactic work is making one more strong positional move.</p>
 4418: <p>Classically positional play is what is described in part 2 of Nimzowitsch's "My System". Part 1, The Elements, is more tactical in nature. It describes play in open files, using the 7th and 8th ranks, passed pawns, pins, discovered checks and a few other features.</p>

<p>Part 2, Position Play, deals with stuff like </p>

<ol>
<li><p>Fighting for the center, which you do by moving pawns and pieces (firstly knights and bishops, later rooks) so that they occupy, support or attack the center. </p></li>
<li><p>Over protection of important points or squares, in the first instance central ones later they may be points important for attack or defence, is important because it strengthens those points. This in turn gives more freedom and flexibility to the pieces involved. They are not firmly tied down because other pieces are sharing the burden. And it gives prophylaxis. Because these points are over protected you are not going to get caught by a sudden attack from your opponent. </p></li>
<li><p>Certain static features are described and discussed which have positional characteristics. Doubled and isolated pawns are usually positional weaknesses. Very occasionally they may have good features but mostly they are bad. The IQP (isolated queen's pawn) is covered in great depth. Depending on how the two sides play the IQP can be a dynamic attacking tool or it can be a static weakness which will eventually fall. </p></li>
<li><p>The two bishops (when you have two bishops and your opponent has either two knights or one bishop and one knight) is positional plus because of the way they can work together. They can cut an impassable diagonal line across the board in the same way that a rook can cut such lines orthogonally.</p></li>
</ol>

<p>Why are these concepts important? Well, when you first start playing you don't really know what to do with your pieces. As Nimzowitsch says you probably think you should get your pieces out, castle on the opposite to your opponent and then each of you should launch a pawn storm attack against your opponent's castled king. First one to break through wins. It can certainly be a lot of fun but it's just not going to work against somebody who has mastered a more positional way of playing. </p>

<p>These positional concepts give you guidelines of how to play when the position doesn't call for a tactical solution. In some respects it gives you guidance of how to build up your position so that you can either start your own tactical attack or frustrate your opponent's tactical attack.</p>

<p>Mastering tactical and positional play will likely take you to somewhere round about the 2000 level, which is no mean feat. To make progress much beyond this level you will have to start to learn and understand when to break these positional guidelines.</p>

<p>My System has many examples and games which Nimzowitsch uses to illustrate his points. He also wrote a follow on book of more examples and games called Chess Praxis which is highly recommended for further study of positional play.</p>
