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Old October 28th 06, 03:24 PM posted to rec.games.chess.analysis
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Default An original Vladimirov chess problem

I am having fun composing tentative chess problems and I have just
prepared the following Vladimirov
(http://www.matplus.org.yu/VLADI.HTM):

8/B6q/3P1Pp1/2R4P/1pQPP3/2R3N1/4P2p/4KBkr (w#2)

Try: 1. d5? [A] But 1. ... Qh6! [a] (unique refutation)
Try: 1. Nf5? [b] But 1. ... Bxc3! [b] (unique refutation)
Key1. Re5! (unique)
if 1. ... Qh6 [a] then 2. d5# [A] (unique mate)
if 1. ... Bxc3 [b] then 2. Nf5# [b] (unique mate)

The key move is not a mate in the tries because of two different white
interferences. This is a common mechanism with reported examples, but
as far as I know there is no previous realization with a Pawn
interference and a Knight interference (in each thematic try) to a
Rook/Queen key move .

Is there any chess problem database where I could check whether or not
the core pattern of WR(or WQ)-WP-WN-BK) regardless of their board
position or reflection has been used before for the same theme?
That would help. Although I am doing it as a mere exercise to get
technique, it is always more fun when you explore a forest in which
there might be still a mushroom left.
JP

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