1. a3 is called the Anderssen Opening because it was used by Adolf Anderssen in 1858 against Paul Morphy. Although 1. a3 does nothing for development or center control, sometimes the game will transpose into an opening where a3 is a good move.

The most common replies are 1... d5, taking control of the center and freeing the queenside bishop, and 1.. g6 preparing a bishop fianchetto. 1... e5 is playable but not preferred as 2. c4 could turn the game into a reversed sicilian where the pawn on a3 is useful to have.

this is a horrible move first no developpement second those pawns should be ketp down the longest possible it not bad to do that it just can lead later in the game to weakness that why even went ther horse is attack by a bishop grandmaster ( or good player) dont move that pawn up it waste of a move and lead to weakness

No development; it probably isn't used by the masters very much!

I quite like this for white. Stops the black bishop moving to b4 later on and supports a queenside pawn push later starting with b4. It can also confuse opponents who rely too much on studying better known openings. On a site like chess.com, it can also give the impression to a naive opponent that you are a weak player, often leading them to drop their guard. I don't dispute that it is quite easy for black to achieve equality with white, but its perfectly playable I think.

what about if you moved the pawn 2 spaces then the knight can move and the rook is safe from a bishop

ok thanks

I'm new to chess, but don't understand the strategy.

no center control ?

new to game

Stops a bishop from getting the rook in that corner but otherwise just takes away a potential square in which the knight could move!!