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MatPlus.Net Forum General Problemas - April 2015, issue n. 10
 
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(1) Posted by Joaquim Crusats [Tuesday, Mar 31, 2015 15:58]

Problemas - April 2015, issue n. 10


You are welcome to download the new issue of Problemas, the bulletin of the Spanish Society of Chess Problemists (SEPA), at the Society’s web page: http://sepa64.blogspot.com.es/p/revista-problemas-nueva-epoca.html

The April 2015 issue (n.10) consists of 28 pages and a total of 125 diagrams (48 originals). There is a new original “Last move? Duplex” record, an article on “traceable moves”, and another article introducing “help play to dead positions” in English, an article about the Brogi theme in Italian, and a mini-article about “Z moves” in Ukrainian (with the solutions written in English).

SUMMARY

Francesc Vivas i Font, ajedrecista y compositor de estudios (J.Travesset)
La autoclavada negra (J.A.Coello)
Memorial Efrén Petite (#2, h#2) (I.Zurutuza)
A new original “Last move? Duplex” record (Redacción)
Ejercicio de reconstrucción nº 10 (J.A.Coello)
Il tema Brogi nel diretto in due mosse (M.La Rosa)
Problema comentado (P.Cañizares)
Traceable moves: some elaborate examples (J.Crusats)
Versión de un problema de Valentín Marín (Redacción)
Galería de compositores españoles (X) (I.Zurutuza)
Ejercicio de restauración (8) (J.A.Coello)
Introducción a las piezas de fantasía (P.Cañizares)
Recompensas (I.Zurutuza)
Selección de finales (P.Cañizares)
“Zамовна” Zадача Zодчого (А.Фролкін)
Help play to a dead position (P.Olin)
Obra inédita de Efrén Petite (IV) (J.A.Coello)

If you want to receive each new issue of Problemas by email (free of charge) send an empty email message to “sepa.problemas@gmail.com” mentioning the words “subscription” (or “unsubscription”) in the subject and you will be included in the distribution list.
 
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(2) Posted by Per Olin [Thursday, Apr 9, 2015 19:31]

The Problemas issue has an article about help play to a dead position. Here for solving one more problem with this stipulation.

Per Olin
Original

(= 4+4 )

HDP 5.0
(help play to a dead position (DP) in five moves; Black begins, DP to be reached in the 5th move by White)

For those who do not solve this: the solution will be given in a couple of days.

For those who solved: the next step is...
 
 
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(3) Posted by Joost de Heer [Friday, Apr 10, 2015 15:13]

Probably the first realisation of the theme was done by Michel Caillaud: P1004030
 
   
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(4) Posted by Per Olin [Sunday, Apr 12, 2015 10:37]

Solution to the problem in post 2:

Try: White needs four moves by the king to capture the black pawn f2 and one move with the g-pawn to get it captured. Black moves could be three to capture the e-pawns + Bxg3 +c1B. But when the bishop captures on g3 it prevents White from capturing on f2 or checks the white king on f2; in both cases no dead position in five moves. Solution: 1.f1R g3 2.Rf8 exf8B 3.c1B e7 4.Kd7 Kb6 5.Bxg3 e8Q DP
 
   
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(5) Posted by Siegfried Hornecker [Wednesday, Apr 22, 2015 16:24]

So, being nitpicky as always, one more question:
Is help play to a dead position orthodox (like directmates) or heterodox (like helpmates) or even specifically considered retro - or fairy?
 
   
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(6) Posted by seetharaman kalyan [Wednesday, Apr 22, 2015 18:37]

Helplay is no longer Fairy ! It was... some decades ago.
 
   
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(7) Posted by Per Olin [Saturday, Apr 25, 2015 09:45]

The question asked in post 5 has got the right answer in post 6: help play to a dead position is not fairy. A couple of consequential questions have been asked in a new thread titled 'Why? Should?'
 
   
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(8) Posted by seetharaman kalyan [Saturday, Apr 25, 2015 11:21]; edited by seetharaman kalyan [15-04-25]

Helpmates are no longer fairy. But Helpselfmates are still considered fairy (though without justification), as also serieshelpmates/stalmates. So help play to a dead position will fall under this category.
 
   
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(9) Posted by Per Olin [Saturday, Apr 25, 2015 12:33]

Correct, helpstalemates are considered to be fairy without any justification. Agree that helpstalemates and help play to a dead position should be treated in the same way. But I don't see much justification in continuing to be inconsistent!
 
 
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(10) Posted by Andrew Buchanan [Thursday, Jul 16, 2015 09:56]

Thanks Joost!
 
 
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(11) Posted by Andrew Buchanan [Tuesday, Jul 21, 2015 10:02]

 QUOTE 
Probably the first realisation of the theme was done by Michel Caillaud: P1004030

Thanks Joost: I have added a detailed solution in PDB.
 
 
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MatPlus.Net Forum General Problemas - April 2015, issue n. 10