interference with his plans to queen the Pawn except maneuvers of
the black King, which might still lead to the capture or the
blockade of the Pawn.

A rash advance of the Pawn would again be the wrong thing. The
right way of playing is indicated by a simple calculation. The
Pawn needs four moves to reach the queening square. But the black
King arrives there in the same number of moves, so that he can
capture the Pawn the moment he queens. Consequently White will
only be able to enforce the safe queening of his Pawn if he can
gain control of the queening square with his own King, thus
protecting the Pawn at the time of queening.

Now, White needs three moves to bring his King up to his Pawn on
f4. In the meantime Black will have reached the square d6 and
after White's (4) K-f5 Black will block the further advance of
White's King by K-e7. However, White can force Black to give the
way free. The maneuver by which he does this is one which occurs
in a similar form in nearly all Pawn endings and its thorough
grasp is therefore essential. Diagram 15 shows the critical
position.

+---------------------------------------+
8 | | | | | | | | |
|---------------------------------------|
7 | | | | | #K | | | |
|---------------------------------------|
6 | | | | | | | | |
|---------------------------------------|
5 | | | | | | ^K | | |