Baker’s Defence, also commonly known as the “St George Defence” (against d4), is where Black plays a6, b5, and Bb7. The usual line is “1.e4 a6, 2.d4 b5”. The “Polish Defence” is “1.d4 b5” and is similar, but Black may avoid playing “a6” (e.g. with “b4”), although the lines may converge if Black plays it later.
Diagram: Baker’s Defence
Black can play this opening against “d4” with “b5” immediately (Polish Defence), or against “1.e4” by playing first “1…a6” and then “2…b5”.
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