user1315: When playing C11 French/Steinitz, 6. dxc5 Bxc5 is chosen. Even in Shredder, it's most played in C11 French/Steinitz. What should White best reply after 6. dxc5 Bxc5??  
[FEN ""]
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nf3 c5 6. dxc5 Bxc5

Best Regard, 
Ahmad

user1382: The plan for white is to secure the e5 square. Black's freeing maneuver will be to play f6, and the resulting position will have a backwards pawn on e6. Therefore, white's plan will be to place his bishop on f4 and move his knight to e5, perhaps with support along the e-file from a rook or queen.
A possible variation could continue as follows:
rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nf3 c5 6. dxc5 Bxc5 7. Bd3 Nc6 8. Bf4 f6 9. exf6 Nxf6 10. O-O O-O 11. Ne5 Bd7 12. Qe2

Keep in mind that this isn't the only way of playing the Steinitz. White more commonly plays 5. f4, bolstering his center pawn on e5 before continuing to develop with Nf3. Also, 6...Nc6 is considered a more accurate move for black, leaving the option of capturing on c5 for a later move and saving a tempo to attack the e5 square.

user1506: It may not hit the point of the post, but I would like to show you, how I like to play against e6. I play Qh5 after Nfd7, because it is very aggressive and most of the players don't know how to play against it.


[fen ""]
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Qh5 c5 6. Nf3


cxd4 Nxd4 and now black has to be careful of Nxe6
You will play Be3, sometimes Nb5, often 0-0-0 to protect d4 with your rock.
You can also try to play Ng5 with the opportunity to Qxf7. After g6 you play Qf3.
Nxe5 variety


[fen ""]
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Qh5 c5 6. Nf3 cxd4 7. Nxd4 g6 8. Qg5 Qxg5 9. Bxg5 Nxe5 10. Bf6


Qb6 variety


[fen ""]
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Qh5 c5 6. Nf3 cxd4 7. Nxd4 Qb6 8. Ndb5 Nc6



1315: <p>When playing C11 French/Steinitz, <code>6. dxc5 Bxc5</code> is chosen. Even in <a href="http://www.shredderchess.com/online-chess/online-databases/opening-database.html" rel="nofollow noreferrer">Shredder</a>, it's most played in C11 French/Steinitz. What should White best reply after <code>6. dxc5 Bxc5</code>??  </p>

<pre><code>[FEN ""]
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nf3 c5 6. dxc5 Bxc5
</code></pre>

<p>Best Regard, <br>
Ahmad</p>
 1382: <p>The plan for white is to <strong>secure the e5 square</strong>. Black's freeing maneuver will be to play f6, and the resulting position will have a backwards pawn on e6. Therefore, white's plan will be to place his bishop on f4 and move his knight to e5, perhaps with support along the e-file from a rook or queen.</p>

<p>A possible variation could continue as follows:</p>

<pre><code>rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nf3 c5 6. dxc5 Bxc5 7. Bd3 Nc6 8. Bf4 f6 9. exf6 Nxf6 10. O-O O-O 11. Ne5 Bd7 12. Qe2
</code></pre>

<p>Keep in mind that this isn't the only way of playing the Steinitz. White more commonly plays <code>5. f4</code>, bolstering his center pawn on e5 before continuing to develop with Nf3. Also, <code>6...Nc6</code> is considered a more accurate move for black, leaving the option of capturing on c5 for a later move and saving a tempo to attack the e5 square.</p>
 1506: <p>It may not hit the point of the post, but I would like to show you, how I like to play against e6. I play <code>Qh5</code> after <code>Nfd7</code>, because it is very aggressive and most of the players don't know how to play against it.</p>

<pre>
<code>
[fen ""]
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Qh5 c5 6. Nf3
</code>
</pre>

<p><code>cxd4 Nxd4</code> and now black has to be careful of <code>Nxe6</code></p>

<p>You will play <code>Be3</code>, sometimes <code>Nb5</code>, often <code>0-0-0</code> to protect <code>d4</code> with your rock.</p>

<p>You can also try to play <code>Ng5</code> with the opportunity to <code>Qxf7</code>. After <code>g6</code> you play <code>Qf3</code>.</p>

<p><strong>Nxe5 variety</strong></p>

<pre>
<code>
[fen ""]
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Qh5 c5 6. Nf3 cxd4 7. Nxd4 g6 8. Qg5 Qxg5 9. Bxg5 Nxe5 10. Bf6
</code>
</pre>

<p><strong>Qb6 variety</strong></p>

<pre>
<code>
[fen ""]
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Qh5 c5 6. Nf3 cxd4 7. Nxd4 Qb6 8. Ndb5 Nc6
</code>
</pre>
