I am new to chess and am confused on what to do with the following opening
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1. e4 e5
2. Nf3 Nf6
3. Nc3 Bb4
I have been playing 4. a3
, but the Bishop then proceeds to take c3 so I end up with a doubled pawn.
If someone could offer some guidance or tell me what this opening is called so I can do some research, it would be very much appreciated.
Cheers