F130 Probleemblad 5 - 1999
(I was thinking about twin with pc4 moved to c3... so it means I really overlooked something in this problem,
fortunately, its author sent me an e-mail...)
Ruud Beugelsdijk wrote me:
"Omitting the moves of the I, we get:
a) 1.d4? th. 2.Kg5#, 1...c5 2.Kh5#, but 1...cxb5!
1.f4! th. 2.Kh5#, 1...c5 2.Kg5#
There are several other variantions.
b) 1.d4? th. 2.Kg5#, but 1...cxb5!
1.f4? th. 2.Kh5#, but 1...c5!
1.Sa8! zz 1...cxb5, c5 2.Kg5#, Kh5#
A very strange key! The meaning of pawn a3 is shown by: 1...cxb5 2.Kg5 when imitator is at b4,
a3 preventing selfcheck by white.
My intention was to produce a lightweight Le Grand plus Dombrovskis in a
twin. In view of this, the construction in the upper right corner is highly
Last evening, I played through the solution once more and again I got the
feeling that it is a curious composition."
In a) position there is le Grand theme with typical imitator effects - a playground for imitator is changed
by the try and the key. You can compare that to my own #3, but well,
threemover offers much wider possibilities.