Net-Chess.Comhttps://www.net-chess.com/phpBB2/

in other case:

1.b4 e5
2.Bb2 f6
3.e4 Bxb4
4.Bxe5 fxe5
5.Qh5+

gambit always right

Wall Bill - Silvercat, Internet (2002.12.21) 2002
1.b4 e5 2.Bb2 f6 3.e4 Bxb4 4.Bc4 Ne7 5.Nf3 d5 6.exd5 Nxd5 7.Nh4 O-O
8.O-O h6 9.d4 Kh8 10.Ng6+ Kg8 11.Nxf8 Kxf8 12.dxe5 1-0

this line called tartakower gambit.

i means there is less n lack of choice n also slow develope for black queenside. advance pawn at b5 is also useful at mid-endgame.

tartakower play b5 n make black queenside troubles