user2002: I was studying the Danish Gambit recently. The Wikipedia page about Danish Gambit listed the first moves as: 1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Nxc3... 
[FEN " "]
1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Nxc3

I am a beginner and I didn't what to do after. The page itself listed a few variations. 

4...d6 5.Bc4 Nc6 6.Nf3
4...Bc5 5.Bc4 Nc6 6.Nf3
4...Nc6 5.Bc4 and 6.Nf3
4...Bb4 5.Bc4

But I could not understand them (I mean, I couldn't make out the use of making those particular moves). Could anyone help me to decode the underlying tactics of making such moves?

user2001: The general idea of a gambit is to sacrifice a pawn in order to grab the initiative. The goal of the Danish gambit is to attack the black king before it has time to castle. Try the more sharp
[FEN ""]
1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2

Next, the idea is to attack the black king, mainly the f7 square using the light squared bishop, the queen and perhaps the knight from g1. Also, to control the center, castle and then include the rooks in the attack. Try this in your games and explore these positions.

user291: Well, both sides are trying to develop their pieces.
For White, Bc4 develops his bishop and points at the important f7 square. Nf3 develops his knight and controls d4 and e5. He could also eventually now play Ng5 aiming again at f7.
Black also wants to develop his pieces. ...Nf6 is often one of the first developing moves Black makes, clearing out pieces from his kingside back rank so that he can castle, but right now 4...Nf6 would be silly because White would just play 5.e5 and Black's knight would have nowhere to go except back to g8. So other ideas of his include

4...d6, controlling e5 to make ...Nf6 possible, and also clearing space for his light-squared bishop to develop
4...Bc5, developing his bishop and taking one step towards castling kingside
4...Nc6, developing his knight and controlling the central squares d4 and e5
4...Bb4, with some of the same ideas as ...Bc5, also creating a pin so that White's knight can't move and e4 is less defended.

No crazy tactics, just getting your pieces all out there so you can start fighting.

2002: <p>I was studying the Danish Gambit recently. The Wikipedia page about Danish Gambit listed the first moves as: 1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Nxc3... </p>

<pre><code>[FEN " "]
1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Nxc3
</code></pre>

<p>I am a beginner and I didn't what to do after. The page itself listed a few variations. </p>

<ul>
<li>4...d6 5.Bc4 Nc6 6.Nf3</li>
<li>4...Bc5 5.Bc4 Nc6 6.Nf3</li>
<li>4...Nc6 5.Bc4 and 6.Nf3</li>
<li>4...Bb4 5.Bc4</li>
</ul>

<p>But I could not understand them (I mean, I couldn't make out the use of making those particular moves). Could anyone help me to decode the underlying tactics of making such moves?</p>
 2001: <p>The general idea of a gambit is to sacrifice a pawn in order to grab the initiative. The goal of the Danish gambit is to attack the black king before it has time to castle. Try the more sharp</p>

<pre><code>[FEN ""]
1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2
</code></pre>

<p>Next, the idea is to attack the black king, mainly the f7 square using the light squared bishop, the queen and perhaps the knight from g1. Also, to control the center, castle and then include the rooks in the attack. Try this in your games and explore these positions.</p>
 291: <p>Well, both sides are trying to develop their pieces.</p>

<p>For White, Bc4 develops his bishop and points at the important f7 square. Nf3 develops his knight and controls d4 and e5. He could also eventually now play Ng5 aiming again at f7.</p>

<p>Black also wants to develop his pieces. ...Nf6 is often one of the first developing moves Black makes, clearing out pieces from his kingside back rank so that he can castle, but right now 4...Nf6 would be silly because White would just play 5.e5 and Black's knight would have nowhere to go except back to g8. So other ideas of his include</p>

<ul>
<li>4...d6, controlling e5 to make ...Nf6 possible, and also clearing space for his light-squared bishop to develop</li>
<li>4...Bc5, developing his bishop and taking one step towards castling kingside</li>
<li>4...Nc6, developing his knight and controlling the central squares d4 and e5</li>
<li>4...Bb4, with some of the same ideas as ...Bc5, also creating a pin so that White's knight can't move and e4 is less defended.</li>
</ul>

<p>No crazy tactics, just getting your pieces all out there so you can start fighting.</p>
