When isolated pawns are adjacent to the file of the enemy pawn, that is, when White has no passed pawn, Black’s prospects of draw improve significantly. The decisive factors for the outcome of the game are better king position and reserve pawn moves. As a rule, the basic strategy of both sides consists in gaining more space, during which process the attacking side will attempt to hoard as many tempi as possible. Only when the favourable position of the king in front of the pawns has been achieved will the transposition to a won king and one pawn versus king ending be forced either by exchanging one pawn or employing a roundabout manoeuvre. Here, again, the strongest defensive trump card is the opposition. Let us first examine a typical position where White has achieved a minimal spatial superiority but lacks a reserve tempo. This position is mutual zugzwang. The outcome depends on who has the opposition. White to move draws; Black to move loses!