[Retros] Challenge

[Joost de Heer]

> *Knud Hannemann*, Dagens Nyheter, 1933

> http://www.softdecc.com/pdb/diagrams/P1082699.png

> Mate exactly in 1, 2, 3 and 4 moves.


Variation on a theme:

Horst Bäcker
Problemkiste 12/1992
1S6/1spP4/2pk1K2/p1p3p/P1P3P1/5p2/5P2/8
#1 Circe
b) exact #2
c) exact #3
d) exact #4

Joost