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MatPlus.Net Forum Competitions Bjorn Enemark 80
 
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(1) Posted by Bjørn Enemark [Friday, Aug 6, 2021 11:57]

Bjorn Enemark 80


Dansk Skakproblem Klub (The Danish Chess Problem Society) announces a formal tournament, celebrating the 80th birthday (August 17th) of the editor, Bjorn Enemark.
Stipulation: H#2.5 – H#n, no zero positions, theme: photographic (perfect) echo (the echo may be mirrored or turned), no more than five entries per author
Conditions allowed (but not required): all Circe variants, all fairy pieces are allowed (not required), including neutral pieces
Closing date: November 15th, 2021. Judge: Bjorn Enemark
All entries must have been verified by Popeye or WinChloe
Please send your entries to tourney director Steffen Slumstrup Nielsen,
stjeffen@gmail.com marked Enemark-80

Example:
Michel Caillaud
WCCC 2008, Sake, 3. Comm
(= 2+5 )
H#4 Circe C+ 2+5
B: bPd5 -> c6
 
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(2) Posted by Georgy Evseev [Tuesday, Aug 17, 2021 08:00]

May I ask for clarification what is meant under the "photographic (perfect) echo"?

1. Should _all_ the pieces on the board be echo-translated, or only those that participate in mate (guarding, blocking, pinning, etc.)? For example, if a bPh7 is added example (I did not check if cooks may appear), will the problem remain thematic?
2. If the requirement is not strict, is it allowed to use different units (of the same kind) in different mates?

That is, is below problem thematic (there are different unused pieces in mates and different knights are used in finals, while echo itself is "perfect")?

WinChloe 817612

Mihaiu CIOFLANCA
Best Problems 2021
(= 2+8 )

h‡4 (2+8) C+
b) -Sc4
 
 
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(3) Posted by Bjørn Enemark [Wednesday, Aug 18, 2021 19:12]

1) I think it is a plus if all pieces are echo-translated. In the problem by Cioflâncă this is not the case for bSd1, bPa4 and bPb3 and they show up on the photo.
2) A photo does not see the difference between pieces of the same kind so it is ok to construct an echo that way (the two knights in the problem)
So yes, the problem is thematic, but it would score higher if all pieces were part of the echo
 
 
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MatPlus.Net Forum Competitions Bjorn Enemark 80