Let's now examine this specific position in light of the general rule:
1...a3? 2.Nc2+ {forks the king and pawn to force a draw} =
1...Kc4 2.Nc2 {threatens b3} =
1...Kc3 2.Nb5 {threatens b3} =
1...Kc5 2.Nc2 [threatens b3} =
1...Ka5 2.Nc2 {threatens b3} =
1...Ka3 2.Nb5+ {threatnes b3} =
An even simpler way to evaluate this is to realize that the knight is forking the two drawing squares (c2, b5). Black's king can't protect both squares, and he can't advance his pawn due to the fork Nc2+, so it's a draw.
Hallo,
Is this position a win for black, or a draw?
What are the conditions for white to force a draw, or black to force a win?