1- the London
2- the Torre
3- the Colle–Koltanowski
4- the Colle–Zukertort
5- the "Reversed QGD Tarrasch system" where White plays 1.d4 2.Nf3 3.c4 4.e3 closing the Queen's Bishop behind the Pawn chain (this does not have a maximum Elo when it is played against the QGA, the Slav and the Semi-Slav, but it does have a maximum Elo when it is played against the QGD, the QID, the KID and the Benoni)
6- the "Catalan system" where White plays (in some order) d4, c4, Nf3, g3, Bg2, O-O against everything (many say that beginners shouldn't play the Catalan)
1 : 2400
2 : no idea
3 : 2000
4 : 2100
5 : no idea
6 : I guess 2400 by playing subtly enough, otherwise 2000 or 2100
In this thread, you can give some openings and give the minimum and/or the maximum FIDE Elo rating at which they remain good choices.
If an opening has a maximum Elo rating of X, this would mean that if your goal is to reach X Elo or less this opening would be a good choice, but if your goal is to reach more than X Elo this opening would be a bad choice, this opening is good enough to reach X Elo but not to reach more than that. Of course it is possible to reach GM level (2500 Elo) with absolutely any openings, even garbage openings like the King's Gambit, Budapest Gambit, Sicilian Wing Gambit, but yet these openings are not good choices to reach GM level, IMO the maximum Elo for these openings is about 1800.
I'm talking about this opening as an ONLY weapon. So the French Exchange is playable as a secondary weapon up to 3000 Elo, but IMO as an only weapon it is only playable up to 2000 Elo.
The openings that are commonly played by super-GMs (e.g. Najdorf, Nimzo, Semi-Slav, Grunfeld) don't have a maximum Elo.
I'm particularly interested about knowing what's the maximum Elo rating for the following White systems:
- the London
- the Torre
- the Colle–Koltanowski
- the Colle–Zukertort
- the "Reversed QGD Tarrasch system" where White plays 1.d4 2.Nf3 3.c4 4.e3 closing the Queen's Bishop behind the Pawn chain (this does not have a maximum Elo when it is played against the QGA, the Slav and the Semi-Slav, but it does have a maximum Elo when it is played against the QGD, the QID, the KID and the Benoni)
- the "Catalan system" where White plays (in some order) d4, c4, Nf3, g3, Bg2, O-O against everything (many say that beginners shouldn't play the Catalan)