user7908: I am improving my chess. What is the best move here and why? (black moves)
rnb2rk1/pp2qpp1/3p1b1p/2pBp2Q/4P2P/3P1N2/PPP2PP1/2KR3R b - h3 0 1


user70: Black has saddled himself with a ghastly pawn chain weakness - the hole on d5.  Since the White Bishop that's sitting there is powerful, and its Black counterpart is undeveloped, 1... Be6 seems to be a good move. I'd be intend on capturing it the next move. I don't think White wants to capture the Black Bishop with 2. Bxe6 since this will allow Black to defend d5 with 2... fxe6.
Once White's Bishop is gone, g5 and h5 start looking entertaining for Black as White has no defenders on that side of the board. 
Black needs to connect his rooks (before pushing h5 and g5) and be ready for White to hammer on that backward d pawn with his rooks.

user291: Black is up a piece, so I would just play ...Be6 to force a bishop trade, which is generally a good idea when you're up material (you'd rather be up 1 piece to 0 than 6 pieces to 5).

user4362: I think an answer to this question should stress the fact that white has a very dangerous and ready made attack in this position. If black does nothing, g4-g5 will rip his kingside apart, extra piece notwithstanding. 
Be6 is a good move because it exchanges one attacking piece and regains control of an important square, g6. For example after 1…Be6 2.g4 Bxd5 3.exd5 Qd7 4.g5 g6 5.Qxh6 Bg7, black has managed to defend and trap the queen. 
Edit: I want to add that this is one of the positions where a computer will not show you what it's all about. An engine will calculate that g4-g5 doesn't work so it might not even show the idea. With black it might not defend against it directly, because it sees that due to some random tactical details (king on c1 instead of b1, Rh3 impossible, etc.) it can defend against g4-g5 even a move later. 
But for a human player g4-g5 is the whole point of the position. This is the problem you have to solve as black, if you do, you will win. This is the plan you have to make work as white, otherwise you might as well resign. 

7908: <p>I am improving my chess. What is the best move here and why? (black moves)</p>
<pre><code>rnb2rk1/pp2qpp1/3p1b1p/2pBp2Q/4P2P/3P1N2/PPP2PP1/2KR3R b - h3 0 1
</code></pre>
 70: <p>Black has saddled himself with a ghastly pawn chain weakness - the hole on d5.  Since the White Bishop that's sitting there is powerful, and its Black counterpart is undeveloped, <code>1... Be6</code> seems to be a good move. I'd be intend on capturing it the next move. I don't think White wants to capture the Black Bishop with <code>2. Bxe6</code> since this will allow Black to defend d5 with <code>2... fxe6</code>.</p>

<p>Once White's Bishop is gone, g5 and h5 start looking entertaining for Black as White has no defenders on that side of the board. </p>

<p>Black needs to connect his rooks (before pushing h5 and g5) and be ready for White to hammer on that backward d pawn with his rooks.</p>
 291: <p>Black is up a piece, so I would just play ...Be6 to force a bishop trade, which is generally a good idea when you're up material (you'd rather be up 1 piece to 0 than 6 pieces to 5).</p>
 4362: <p>I think an answer to this question should stress the fact that white has a very dangerous and ready made attack in this position. If black does nothing, g4-g5 will rip his kingside apart, extra piece notwithstanding. </p>

<p>Be6 is a good move because it exchanges one attacking piece and regains control of an important square, g6. For example after 1…Be6 2.g4 Bxd5 3.exd5 Qd7 4.g5 g6 5.Qxh6 Bg7, black has managed to defend and trap the queen. </p>

<p>Edit: I want to add that this is one of the positions where a computer will not show you what it's all about. An engine will calculate that g4-g5 doesn't work so it might not even show the idea. With black it might not defend against it directly, because it sees that due to some random tactical details (king on c1 instead of b1, Rh3 impossible, etc.) it can defend against g4-g5 even a move later. </p>

<p>But for a human player g4-g5 is the whole point of the position. This is the problem you have to solve as black, if you do, you will win. This is the plan you have to make work as white, otherwise you might as well resign. </p>
