Hey,

Could someone please give me an explanation of the last move in this problem?

Thanks in advance!

Greetings.

through the eyes of an amateur, i see no reason for a5

A5 saves the bishop and gaurentees that black atleast wins the exchange.

it saves your bishop... otherwise it must be traded off for a pawn as blacck advances his pawn up once again.

oh! i was confused

a5 by black prevents a5 by white, which would win the bishop after Ba7, Ra8.

Allright thanks, that's nice!

People say it saves the bishop, but it seems to me that the b-pawn takes black's a-pawn and then the bishop is still lost.

(Or if not the bishop, then the rook once the check threat is gone)

Yes, but you recapture the pawn with your rook.

I can't believe I didn't see that!

ADK

nice