user8291: What sequence of opening moves can include most different named Openings or Defenses by transpositions?
For example, I just played a bullet game that went:
1.d4 e5 2. e4 d6 3. Nf3 Nc6 4. Bb5.
In this sequence, we have, in just four moves:
Queen’s Pawn Opening;
Englund Gambit;
King’s Pawn Opening;
Center Game;
Philidor’s Defense;
Ruy Lopez;
Steinitz Defense to the Ruy Lopez;
Very interesting is also:
1.e4 d5 2.d4 c6 (or 2...e6), and so on.
Are there any other similar (or better) examples of this kind?

user9025: Another well-known example is the following:
[fen ""] 
1. f4 {Bird's Opening} 1... e5 {From Gambit} 2. e4 {King's Gambit} 2... d5 {Falkbeer Counter Gambit} 3. exd5 exf4 {King's Gambit Accepted}

A total of 5 distinct names.
Bird's Opening
From Gambit
King's Gambit
Falkbeer Counter Gambit
King's Gambit Accepted  

8291: <p>What sequence of opening moves can include most different named Openings or Defenses by transpositions?</p>

<p>For example, I just played a bullet game that went:</p>

<p>1.d4 e5 2. e4 d6 3. Nf3 Nc6 4. Bb5.</p>

<p>In this sequence, we have, in just four moves:</p>

<p>Queen’s Pawn Opening;
Englund Gambit;
King’s Pawn Opening;
Center Game;
Philidor’s Defense;
Ruy Lopez;
Steinitz Defense to the Ruy Lopez;</p>

<p>Very interesting is also:</p>

<p>1.e4 d5 2.d4 c6 (or 2...e6), and so on.</p>

<p>Are there any other similar (or better) examples of this kind?</p>
 9025: <p>Another well-known example is the following:</p>

<pre><code>[fen ""] 
1. f4 {Bird's Opening} 1... e5 {From Gambit} 2. e4 {King's Gambit} 2... d5 {Falkbeer Counter Gambit} 3. exd5 exf4 {King's Gambit Accepted}
</code></pre>

<p>A total of 5 distinct names.<br>
Bird's Opening<br>
From Gambit<br>
King's Gambit<br>
Falkbeer Counter Gambit<br>
King's Gambit Accepted  </p>
