user18749: I am looking at this game and saw this opening.
[FEN ""]
1.e4 e5 2.d4 exd4 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Qh5+ g6 6.Qd5+ Kg7 7.Qxc5

The 3.Bc4 is new to me. I think people usually play 3.Qxd4. So, my questions are:

What is the idea behind 3.Bc4? Simply put pressure the f7 square?
It seems that 3. ...Bc5 allows White to sacrifice the bishop because he could take a bishop back at 7.Qxc5. Are there any other reasonable moves for black after 3.Bc4?


user25320: 3. Bc4 is one of those fairly regular moves that defer the opening selection of the Scotch Gambit (1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4) and the Danish Gambit (1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4). 3... Bc5? is a well-known mistake because of the Bxf7+ followed by Qh5+ sequence.
That's why Black's move is normally 3... Nc6 or 3... Nf6.

18749: <p>I am looking at <a href="https://www.chessgames.com/perl/chessgame?gid=1028806" rel="nofollow noreferrer">this game</a> and saw this opening.</p>
<pre><code>[FEN &quot;&quot;]
1.e4 e5 2.d4 exd4 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Qh5+ g6 6.Qd5+ Kg7 7.Qxc5
</code></pre>
<p>The 3.Bc4 is new to me. I think people usually play 3.Qxd4. So, my questions are:</p>
<ol>
<li>What is the idea behind 3.Bc4? Simply put pressure the f7 square?</li>
<li>It seems that 3. ...Bc5 allows White to sacrifice the bishop because he could take a bishop back at 7.Qxc5. Are there any other reasonable moves for black after 3.Bc4?</li>
</ol>
 25320: <p><strong>3. Bc4</strong> is one of those fairly regular moves that defer the opening selection of the Scotch Gambit (<strong>1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4</strong>) and the Danish Gambit (<strong>1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4</strong>). <strong>3... Bc5?</strong> is a well-known mistake because of the <strong>Bxf7+</strong> followed by <strong>Qh5+</strong> sequence.</p>
<p>That's why Black's move is normally <strong>3... Nc6</strong> or <strong>3... Nf6</strong>.</p>
