Transpositions

How many opening transpositions are there?

I would like to see a diagram of all of them but have not been able to find one, presumably because there are too many of them.

Equally useful, or perhaps more useful, would be one diagram per opening. For example, say I play the Caro Kann: I would like to know which other openings it transposes to and where it happens, and ideally some idea about how often it happens.

I found some useful information here

https://en.wikipedia.org/wiki/Transposition_%28chess%29?wprov=sfla1

Besides this most search results seem to be about engine programming.

Do you want people to post transpositions on here?

Cause I probably have a lot

There are many possible transpositions even between seemingly totally different openings:
between Queen's Gambit Accepted and Petrov, between Petrov and French, between French and Sicilian, between Sicilian and Scotch...

An excellent answer!

Yes I don't know what the number is but I am sure that it is well over 100 so probably too much to post here. I am wondering whether anyone knows any good resources.

@theendgame3 thanks for that video, very interesting!

Yes exactly so a good Petrov player needs to know something about QGD and French, a good Sicilian player needs to know something about Scotch games etc.

I recently played a Sicilian Alapin game that became a French game, which really took me by surprise.

At rapid games I am way below your level. I am just more focused on the slower games 

From's Gambit to King's Gambit:

Pirc, Maroczy Defense to Philidor Defense:

Scandinavian, Boehnke Gambit to French Defense Exchange Variation

There are more but I don't wanna spam the forum

Here's another:

Ross Gambit to King's Pawn Opening, King's Knight Variation

I like using the English Opening to avoid the Nimzo or transpose to a QIA depending what the black is playing.

Can even transpose to the Grob a surprise weapon.

There's an Android app called Chess Openings Pro that is useful for finding opening transpositions. There's a checkbox setting that displays the name of the opening along the arrow that represents the next move.

The chess com opening explorer has more or less the same functionality so I can also recommend that, but the app also works offline so it is useful if your internet connection is unreliable.

Omega Gambit to Norwegian Defense:

You can find them on your own

What is the compensation for the Omega Gambit? 2...Nxe4 looks winning for Black

Here I think:

Black moves his knight three times and is sort of losing in development

The main one I love to try to use , Reti Opening - Nimzowitsch Defence Declined - Kings Pawn Opening : Kings Knight Variation .... - Italian Game - Guioco Piano Game : Italian Gambit - Scotch Game : Scotch Gambit .... 

The fantasy variation of the caro-kann, can transpose to the French Steinitz