It is more of a system than an opening, it generaly just transposes to d4 openings, but has some intersting alternitives like playing a reversed Gruenfeild or a KIA.
Only problem with it is that you have commited your g1 knight which is unfavorable if you want to play the modern QG exchange variation rather than the Carlsbad.
The terminology/nomenclature for Reti opening is confusing. 1.Nf3 alone is usually not considered a Reti opening. Or may be it is, but the "true" Reti is the "classical" Reti which is 1.Nf3 d5 2.c4 (as long as it doesn't transform to other openings).
There are 2 pool of players against positional openings. One group is the hypermodern (the one with fianchetto), the other is the classical (the one with d4/e4/d5/e5). If you open with 1.Nf3, KID players (one of the hypermodern) will happily answer with 1...Nf6. The other (smaller) pool will answer with 1...d5 (because 1...e5 is not possible).
1.Nf3 is usually played by advanced players who knows a lot about opening (it is rich with transpositional possibilities) so they will aim for strong variations of any possible openings. When Black answer with 1...d5, most White player will aim for QGD/Catalan (2.d4) not the Reti (2.c4). When Black answer with 1...Nf6 White will usually expect the Symmetrical English (with 2.c4), not KID (where White cannot opt for the Saemisch variation).
But there's an issue to apply 1.Nf3 against weak opponents. It is too passive that you will miss the opportunity to beat them quickly with 1.e4.
I think there's no tactical trap with 1.Nf3 but positional "trap", where those with opening knowledge may trick their opponent to go to position unfamiliar to the opponent, or use their knowledge to transpose to a strong variation of an opening (or weak variation of a defense). The key openings to aim for or to avoid is the Catalan and the Symmetrical English. But both sides must be willing to play the QGD and KID (or else!).
Here is when Black is okay with QG or Reti or KIA or Catalan:
Here is when Black refuses the Symmetrical English and accept the QGD:
Here is when Black is insisting on KID and get the Orthodox variation:
Here is when Black (not sure why) accepts the Symmetrical English:
yusuf_prasojo Thank you so much for all that information...I'll need to really examine all the possibilities you put up there. I was hoping someone with more knowledge about the opening (system) will post in reply; thanks also to Chess_Enigma for replying and sharing what you know. Looks like I have a lot to study since I am thinking of changing my opening to Nf3; wish me luck.
I hope this has not been asked before...I was just wonder if there are any out there that play the Reti Opening?
And if you do, what response from black (your opponent) do you see the most...what are you experience with this opening? do you score well or is it too passive? are there any trappy move order in this opening?
I know that it's just one move, but I was looking at the possible opening moves for white and this was, in my opinion, interesting enough to look into. Thanks.