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Enhancement: Split Master opening book into blitz/rapid/classical

I frequently use the Master opening book for analysis, but am sometimes surprised when a line I'm looking at is from a Blitz/Rapid game. Opening theory for blitz and classical chess vary greatly, and so do the typical results for those time controls (e.g. blitz is more decisive). Would it be useful to others if we split the Master opening database into Blitz/Rapid/Classical time controls?

I'm guessing this would not be trivial to implement and maintain. Many, but not all, blitz and rapid tournaments have the word "blitz" or "rapid" in the event title. For example this month we had the Russian Blitz Championship and the Russian Rapid Championship. An exception for example is the Paul Keres Memorial, which is a rapid tournament.

@HyperOwl, Capablanca chess is a variant that hasn't even been implemented in Lichess yet. This thread only relates to the master opening book for standard chess.

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