Recently I've played a game (with blacks) which ended with this position (White to move) :
[fen "3rk3/p1R2ppp/2p5/8/P1K5/8/1P3PPP/8 w - - 0 1"]
It's clear that White player can't protect his pawns in the second row, but the problem here is with the a file, should black protect his pawns in the a file, which will quite restrict his possibilities ?
Otherwise, Is it possible to just abandon this pawn, and go for white pawns in the 2nd raw ? But the problem here is surely with the white pawn in a4 which is pretty advanced compared to black pawns.
How should black play in order to save his game ( a draw at least ?!)