Reti.
chess opening trivia
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QGD, alternate move order
it could be a barcza opening. hell it could be a ruy lopez with an alternate move order but the first move is known as the Reti.
According to chess.com, it is the Zukertort Opening.
Which at this stage, it is. All the above suggestions require extra moves.
For now I will post notations and will ask what opening is this . What opening is this 1.Nf3?