RND03 - Big Hair Do

White to play and mate in one move
 

a

b

c

d

e

f

g

h

  

8

 8

7

 7

6

 6

5

 5

4

 4

3

 3

2

 2

1

 1
 

a

b

c

d

e

f

g

h

  

Solution

  1. Nb6#

Note that

1. Nc3+, 1. Nb2+ allows black to play 1 ...  Qa5

1. Bxc4+ Rxc4

1. Nc5+   Kb6 - correction thanks to Walt Bayer