user19880: [FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR"]
[Title "Center Game"]
[StartFlipped "1"]

1. e4 e5 2. d4 f6??

Stockfish says that 2…f6 was a blunder and recommends 2…exd4 instead.
I understand why 2…exd4 is the best move for Black, and I have seen people explain why 2…d6 and 2…Nc6 are not as good. However, none of the resources I found mentions 2…f6.
I know that 2…f6 blocks the f6 square which could be used to develop the knight. However, I assume that the knight can be developed to e7 later. Also, 2…f6 might have an advantage over 2…d6, since, if White captures the pawn on e5, Black can then capture back toward the center, which as I know is generally a good thing.

user4418: The reason is that after 3. dxe5 fxe5 4. Qh5+ you are in a lot of trouble and already lost.
[fen ""]

1. e4 e5 2. d4 f6 3. dxe5 fxe5 4. Qh5+ Ke7 (4...g6 5. Qxe5+ Kf7 6. Bc4+) 5. Qxe5+ Kf7 6. Bc4+


19880: <pre><code>[FEN &quot;rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR&quot;]
[Title &quot;Center Game&quot;]
[StartFlipped &quot;1&quot;]

1. e4 e5 2. d4 f6??
</code></pre>
<p>Stockfish says that <strong>2…f6</strong> was a blunder and recommends <strong>2…exd4</strong> instead.</p>
<p>I understand why <strong>2…exd4</strong> is the best move for Black, and I have seen people explain why <strong>2…d6</strong> and <strong>2…Nc6</strong> are not as good. However, none of the resources I found mentions <strong>2…f6</strong>.</p>
<p>I know that <strong>2…f6</strong> blocks the f6 square which could be used to develop the knight. However, I assume that the knight can be developed to e7 later. Also, <strong>2…f6</strong> might have an advantage over <strong>2…d6</strong>, since, if White captures the pawn on e5, Black can then capture back toward the center, which as I know is generally a good thing.</p>
 4418: <p>The reason is that after 3. dxe5 fxe5 4. Qh5+ you are in a lot of trouble and already lost.</p>
<pre><code>[fen &quot;&quot;]

1. e4 e5 2. d4 f6 3. dxe5 fxe5 4. Qh5+ Ke7 (4...g6 5. Qxe5+ Kf7 6. Bc4+) 5. Qxe5+ Kf7 6. Bc4+
</code></pre>
