When the black pawn is fixed on the fifth rank, the situation for White is much more unfavourable for two important reasons. The first is that after the exchange of the bishop and the pawn, one more tempo is needed to occupy the crucial b7 square and to prevent the lifesaving Kc8. This is why the win requires as many as four «saved tempi», which means that White must cut off the opponent’s king along at least f-file! The other reason is that the tactic threat of the rook sacrifice on b4 is abandoned since Black would be a tempo faster in the pawn race. The following position was examined in detail by B. Baranov in 1954. and he made a great discovery. Black to move draws when the correct defence avoids the drive across the f-file.