WHITE.BLACK.
...1.Q to B 3: ch.
2.Q to Kt 2: ch.2.Q takes Q: ch.
3.R takes Q3.R to R 8: ch.
4.R to Kt sq.4.R takes R: ch.
5.K takes R...

Producing the position shown in Fig. 14; and Black draws; for the Black King can reach the pawn before the White King can approach to defend it. Consequently White can only advance the pawn; but the Black King will be able to stop it from queening, for his next move will bring him within

the square (indicated above) in which the pawn stands, and in such case he can always overtake it. Thus—

WHITE.BLACK.
...5.K to Kt 6
6.P to Kt 46.K to B 5
7.P to Kt 57.K to K 4
8.P to Kt 68.K to Q 3
9.P to Kt 79.K to B 2

And the pawn is lost. It will be seen that the Black King remains with every move within the square of the pawn.

Fig. 15 illustrates a position in which the pawn can be supported by the King. Here if White were at once to advance the pawn, the Black King would move within the square of the pawn and capture it. Therefore the King must go to protect it.

1.K to Q 21.K to B 5
2.K to K 32.K to Q 4
3.K to B 43.K to K 3
4.K to Kt 54.K to B 2
5.K to R 65.K to Kt sq.
6.P to Kt 46.K to R sq.
7.P to Kt 57.K to Kt sq.
8.K to Kt 68.K to R sq.
9.K to B 7...