user3237: I am not sure what to play as Black in the Classical Variation of the Caro-Kann, after 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3
  [StartPly "19"]

  [FEN ""]
  1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3

What I would like is the most positional, strategic, quiet, slow, closed, boring, dry and solid variation (the variation which is the least sharp and tactical).
And I would like to castle on the same side as White.
So what exactly should I play? And what are the differences between starting first with 10...e6 or 10...Qc7 or 10...Ngf6 ?

user4402: A suggestion i would give is a standard procedure for any game with knights, Look for a strong square, i.e. Nd5. Like i commented on your question, if white chooses to castle queen-side he would weaken his position to chase with c4.
You can bet on white aggresivly attacking your under developed king-side. It might be beneficial to castle queen-side because white lacks his light-squared bishop. I could look up options for you later but that might take time. Let me know if you want me too! :D

user9571: Sigh... Niels is absolutely right. You cannot lock yourself away from sharp positions.
Let's take a look just at 1. e4 c5.
You have 2. Nf3, but then Black can go into a Najdorf, Dragon, or Scheveningen.
The Closed Sicilian relies on the same thing: whether White can get a kingside attack going before Black proves central and queenside dominance.
Even after 2. c3 Black can have a little bit of fun. Both 2... d5 and 2... Nf6 create an unbalanced game.
I've used the Caro-Kann as a side weapon before, and what turned me off is that some of the the positions are too quiet, slow, and closed.
At my rating, I simply cannot push the superior pawn structure all the way to the endgame and then win the endgame with it.
But I keep playing it, precisely for that reason.

user3774: If you are not sure what to play in this position, you had probably better not play a variation leading to it. However, if you happen to reach it, the first thing to decide is which way you would prefer to castle. If you strive for the Queenside (e.g. you believe that Black's O-O gives White an attack you cannot parry), an immediate Qc7 is to be considered. Otherwise just develop your pieces; e6 is most flexible IMHO, but again it is a matter of taste.
P.S. the list of adjectives you've presented is quite contradictory.

user2428: You are the author of a series of questions of the type "What is the most boring way to play" and whereas I am fond of positional play as well, I must say that the way the question is formulated is completely wrong. I played the Caro-Kann for years and there is simply no way to avoid an heated battle in some variations, unless you are ready to make a lot of concessions and compromise your game by getting a very passive and unpromising position.
To excel at chess, you must master various types of positions. Avoiding these will stop your progress. You cannot beat regularly stronger players by using positional means only - they will master these positions as well as you do, but are also able to play dynamically. 
Look at Petrosian's games, he was able to attack fiercely.

3237: <p>I am not sure what to play as Black in the Classical Variation of the Caro-Kann, after 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3</p>

<pre><code>  [StartPly "19"]

  [FEN ""]
  1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3
</code></pre>

<p>What I would like is the most positional, strategic, quiet, slow, closed, boring, dry and solid variation (the variation which is the least sharp and tactical).<br>
And I would like to castle on the same side as White.</p>

<p>So what exactly should I play? And what are the differences between starting first with 10...e6 or 10...Qc7 or 10...Ngf6 ?</p>
 4402: <p>A suggestion i would give is a standard procedure for any game with knights, Look for a strong square, i.e. Nd5. Like i commented on your question, if white chooses to castle queen-side he would weaken his position to chase with c4.</p>

<p>You can bet on white aggresivly attacking your under developed king-side. It might be beneficial to castle queen-side because white lacks his light-squared bishop. I could look up options for you later but that might take time. Let me know if you want me too! :D</p>
 9571: <p>Sigh... Niels is absolutely right. You cannot lock yourself away from sharp positions.</p>

<p>Let's take a look just at 1. e4 c5.</p>

<p>You have 2. Nf3, but then Black can go into a Najdorf, Dragon, or Scheveningen.</p>

<p>The Closed Sicilian relies on the same thing: whether White can get a kingside attack going before Black proves central and queenside dominance.</p>

<p>Even after 2. c3 Black can have a little bit of fun. Both 2... d5 and 2... Nf6 create an unbalanced game.</p>

<p>I've used the Caro-Kann as a side weapon before, and what turned me off is that some of the the positions are too quiet, slow, and closed.</p>

<p>At my rating, I simply cannot push the superior pawn structure all the way to the endgame and then win the endgame with it.</p>

<p>But I keep playing it, precisely for that reason.</p>
 3774: <p>If you are not sure what to play in this position, you had probably better not play a variation leading to it. However, if you happen to reach it, the first thing to decide is which way you would prefer to castle. If you strive for the Queenside (e.g. you believe that Black's <code>O-O</code> gives White an attack you cannot parry), an immediate <code>Qc7</code> is to be considered. Otherwise just develop your pieces; <code>e6</code> is most flexible IMHO, but again it is a matter of taste.</p>

<p>P.S. the list of adjectives you've presented is quite contradictory.</p>
 2428: <p>You are the author of a series of questions of the type "What is the most boring way to play" and whereas I am fond of positional play as well, I must say that the way the question is formulated is completely wrong. I played the Caro-Kann for years and there is simply no way to avoid an heated battle in some variations, unless you are ready to make a lot of concessions and compromise your game by getting a very passive and unpromising position.
To excel at chess, you must master various types of positions. Avoiding these will stop your progress. You cannot beat regularly stronger players by using positional means only - they will master these positions as well as you do, but are also able to play dynamically. 
Look at Petrosian's games, he was able to attack fiercely.</p>
