Anerssen's 1. a3. 
Favourite opening
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Ruy lopez
My favourite opening by far is the White side of the Open Philidor: 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Qxd4. I have something like an 80% win percentage with it ... but once I got above 1700 or so no one plays this with Black.
my favorite opening is english opening
Bongcloud attack. Period.
Reti Gambit
QG
London System
Mine is the philidor for Black
King's Gambit!
i like the London System as white (1 d4 2 Bf4). As black I like the Tarrasch Defense against 1 d4, and 2...Nf6 Scandinavian against 1 e4. Against openings such as 1 b3 and Reti I head for a London System reversed.
Ruy Lopez
e5
Stone wall also known as the Dutch Defense.
May 27, 2017
0
#20
I coached a high school team in the '90's and we only had trouble against teams with fairly good opening knowledge on top of good everything else. So one day I said, "Check this out. Here's a perfectly sound opening grandmasters haven't played for 60 years and no one you play will know. It's called the Bishop's Opening: 1 e4 e5 2 Bc4. Often, you can get in an early f4, castle Q-side, and storm the K-side with pawns: a built in plan!"
We rode the Bishop's Opening to the county championship and took home the 3rd Place Team Trophy at the State tournament - 1 and 2 both had a couple Eastern European immigrants on their teams.
A couple years later Kasparov played it in a title match and suddenly it was in favor again but we got a few good years of the Bishop's Opening.
I still occasionally play it and play it's cousin the Vienna Game as well.
White: Vienna Game/Bishop's Opening or c3 Sicilian or Advance Variations when 5th rank/6th rank pawn defenses pop up.
Black: Caro-Kann vs 1 e4 and it's cousin the Slav vs 1 d4.
What's your favourite chess opening? Mines is the Italian. What's yours?