In contrasting to the openings seen above, here white has let go of the b4 pawn which allows white to gain an immediate tempi and counter at the center and there may also be a weakening of the kingside for black player. Moreover there might be a safety concern for black king and might lead to dangerous situation as f7 pawn is already pushed and black has to play such an opening cautiously.
Below is an example of the game played in this opening:
1.b4 e5 2.Bb2 f6 3.e4 Bxb4 4.Bc4 Qe7 5.Nc3 c6 6.Qh5+ g6 7.Qh4 d6 8.f4 Be6 9.Bb3 Nd7 10.Nge2 0-0-0 11.0-0 h5 12.Kh1 g5 13.fxg5 fxg5 14.Qf2 Kb8 15.d4 Ngf6 16.Bxe6 Qxe6 17.a3 Ba5 18.dxe5 dxe5 19.Qf5 Qc4 20.Rad1 Rhf8 21.Qxg5 Ng4 22.Qxh5 Nf2+
White allows for this exchange which leads to a minus position for white.
23.Rxf2 Rxf2 24.h3 Qg8 25.Rg1 Qg7 26.Nd1 Rf7 27.Ne3 Rf2 28.Ng4 Rh8 29.Qxh8+ Qxh8 30.Nxf2 Bb6
A compensation but the position still quite complex.
31.Rd1 Bxf2 32.Rxd7 Kc8 33.Rf7 Bb6 34.Rf5 Qh4 35.Bc3 Qxe4 36.Rxe5
Black has a path to victory which is missed in the position.and repetition leads to a draw.
Qxc2 37.h4 Bc7 38.Re8+ Kd7 39.Re3 Bb6 40.Re5 Bc7
In the tartakower gambit, white tries to take control of the center and grabs more space in the center as a compensation. There is a slight weakness on the black’s king as a result of the pawn push to f6 which has created f7 hole and can be tried to be taken advantage of. So this is going to be a slight opportunity for white and advantage can be taken similar to evans gambit opening which practically requires a lot of experience to defend the position.