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Each defence interferes twice and obstructs once, and each continuation exploits all three errors.
Jacob Hoover: Quite out of the ordinary, but an entertaining solve all the same.
Peter Niehoff: An outstanding problem by the Danish composer, in which each defensive element in the main variations
is blocked on c6.
Dafydd Johnston: The solver should spot the potential mutual interference of four black units on c6, and look for a
threat which will motivate black to play to that square in order to shut off the white bishop from defence of b5.
Once the key is found all that remains is to select the correct response to each of black’s defences. Very
Any comments or questions on this problem should be addressed to
Michael McDowell using the ‘Contact’ item in the menu on the left.