I’m looking for a dynamic opening for white. I have a chess tournament in two weeks.

With a tournament coming up in two weeks, you should play whatever you've been playing. There's not enough time to become comfortable with a new opening.

A new opening for a tournament in 2 weeks is a recipe for losing.

Do you feel that you will have a better chance at winning by playing positions that you already know or by playing something that you just learned?

היי

Queen's gambit

Queen's gambit

Just play 1. e4. Keep life simple

Thompowsky

Trompowsky, sorry

theres some quite aggresive lines in the scotch game.

Exactly! I am playing in the US Open in 4 1/2 weeks, more than double the time, and I am simply shoring up the openings I already know. Analyzing a few lines that have given me problems of late, like the Jackal (1 e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.Nf3 c5 6.Bg5 or 1.e4 e6 2.Nf3 d5 3.Nc3 Nf6 4.e5 Nfd7 5.d4 c5 6.Bg5), but by no means changing openings. If you face me in the US Open, you can prep for me. The game will be a Sokolsky or English if I am White and a French, Dutch, or main line Flank Opening, like 1.b3 e5, if I am Black.

No use learning new openings or bringing back the dinosaurs (like I played the QGD as Black in 1996) at this point.

Play what you know and spend the time shoring up your problem lines, like if you play the Najdorf and 6.Be2 gives you problems, study that!

I think you should try Italian

hey good luck in that tournament -- hope you do well -- at least to be satisficed with yourself

kaiden534 if you want simple openings

1. try Nf3-g3-Bg2-d3-0-0 setups from white

it's like King's Indian Defense

2. Try Stonewall Attack

very Aggressive Opening

if Black:

1. Pirc Defense

example of King's Indian setups

king's indian setup NF6-g6-Bg7-d6-0-0 can be applied with every setup