He likes to combine themes in his problems.
In this exercise, where the problem contains few pieces (it is a Miniature), there are two themes.
Solve the problem (it is necessary to find the tries also) and write in the comments the key and the two themes.
I will write the solution at the end of this post after a few days.
Second Prize, 148 Thematic Tourney Probleemblad 1985
Mate in 2 moves.
#2 ( 6 + 1 )
A note by Alkinoos :
Mr Ioannis Garoufalidis proposed this nice problem.
We have received (30-04-2009) the following complete solution from reader I. K. :
Tries: [1. d8=Q? stalemate], [1. d8=B? ( > 2. Rh5 [A]) Kd5! [a]], [1. d8=R? ( > 2. Be3 [B]) Kb6! [b]]
Key : 1. d8=S! (waiting)
1...Kd5 [a] 2. Rh5# [A]
1...Kb6 [b] 2. Be3# [B]
Themes: (1) The four promotions (AUW), and (2) Dombrovskis.