Die Schwalbe

1 problem(s) found in 1891 milliseconds (displaying 1 problem(s)). [PROBID='P0534407'] [download as LaTeX]

1 - P0534407
Milos Marysko
5666 FEENSCHACH 01-02/1962
(4+3) C+
b) sBf7 nach d7
a) 1. Tf8 0-0-0 2. Ke8 The1#
b) 1. Td8 0-0 2. Ke8 Tae1#
play all play one stop play next play all
VL: Only one castling is legal. Therefore presently (since 2009), due to Art.16 (3) of the Codex, this diagram, as is, represents a retro-problem (PRA) with NO SOLUTION in both twins if the opposite castling is legal. The genre and the soundness can be recovered by a shift of wPa2. (2017-11-26)
VL: Continuation. In reality, the second part of Art.16(3) formally preserves the soundness of problems like this one (without any changes in their positions): namely, in the framework of Retro-Strategy (RS), which justifies the choice of appropriate castling as a part of the solution! However, such a subtle retro-enrichment lies, apparently, beyond the original intention. (2017-12-01)
Keywords: Echo, Castling (wkwg)
Genre: h#
Computer test: Popeye C-Version 3.44 (1024 KB)
FEN: 4r3/4kp2/8/8/8/8/P7/R3K2R
Input: Andreas Mokosch, 1997-12-25
Last update: Alfred Pfeiffer, 2017-11-26 more...
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The problems of this query have been registered by the following contributors:

Andreas Mokosch (1)