Die Schwalbe

6 problem(s) found in 3249 milliseconds (displaying 6 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND K='Phönix']

1 - P1017461
Kostas Prentos
Andriy Frolkin

Messigny 05/2004
1. ehrende Erwähnung Retro-Kompositionsturnier
P1017461
(13+15) C+
BP in 21,5
1. a4 h5 2. a5 h4 3. a6 h3 4. axb7 hxg2 5. Ta6 Th3 6. Tf6 Ta3 7. h4 c5 8. Th3 c4 9. Td3 cxd3 10. c4 gxf6 11. c5 Lh6 12. c6 Le3 13. c7 Sc6 14. b8=T Sh6 15. Tb4 Tb8 16. Tc4 Tbb3 17. Sc3 Lb6 18. e3 Lb7 19. Sge2 Da8 20. c8=T Ld8 21. Tb8 Sd4 22. Tcc8
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paul: 16.Tc4 T8b3 (2020-11-03)
A.Buchanan: A nice trick for the parser which builds the animation would be to spot when a move is ambiguous. So here 16. ... Tb3 needed to be fixed to be 16. ... Tbb3. In this case, the animation guessed wrong and later reported that 19. ... Da8 was impossible. However in some cases, the error might not be picked up by a later illegal move, yet it could still be important. I will request that Gerd have a look at fixing this ancient issue. (2020-11-04)
A.Buchanan: 22.Tc8 was also imprecise, but did not cause a later illegality so there was no clue. Comparing the diagram at the end of animation to the start diagram would not necessarily be sufficient even for proof games, and completely inadequate for forward stipulations. It’s the parser can best nail these issues on a per-move basis. I’ve emailed Gerd (2020-11-05)
A.Buchanan: Gerd has fixed this: announcement 2020-11-7: The solution engine now no longer plays moves with ambiguous move notation in order to ensure that unambiguous solutions are added.
Thanks so much, Gerd! (2020-11-08)
comment
Keywords: Unique Proof Game, Interchange (TT), Phoenix (TT)
Genre: Retro
Computer test: Natch 2.2 Copyright (C) 1997,98,99,2001,2002,2003 Pascal Wassong
FEN: qRRbk3/pb1ppp2/5p1n/8/3n3P/rrNpP3/1P1PNPp1/2BQKB2
Input: Gerd Wilts, 2004-06-03
Last update: Gerd Wilts, 2020-11-07 more...
2 - P1249628
Reinhardt Fiebig
Michael Schlosser

4701 Freie Presse (Chemnitz) 09/07/2009
4. Lob
P1249628
(7+11)
#13
1. Sd1! e3 2. Sxe3 e4 3. Kc3 c4 4. Kd2 c3+ 5. Ke1 c2 6. Sxc2 e3 7. Sb4 e2 8. Sa6 bxa6 9. b7 a5 10. b8=S a4 11. Sc6 a3 12. Sd8 a2 13. Sf7#
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Anton Baumann: C+ Gustav 4.1d (2020-11-24)
comment
Keywords: Model mate, Phoenix
Genre: n#
FEN: 5brk/1p2p1p1/1P1pP1Pp/2pPp2P/2K1p3/2N5/8/8
Input: Felber, Volker, 2012-09-21
Last update: Felber, Volker, 2014-10-15 more...
3 - P1272031
Andrey Selivanov
The Ural's Problemist 01-03/2004
Den Lesern gewidmet
3. Preis
P1272031
(5+2) C+
s#7
1. c7 Kb6 2. Tc6+ Ka5 3. c8=D+ Tb6 4. De4 Kb5 5. Dcf5+ Ka6 6. Ded5 Txc6 7. Dc8+ Txc8#
1. ... Ka5 2. Ka7 Txc5 3. c8=T+ Tc7+ 4. Ka8 Kb6 5. Tb8+ Ka5 6. Dd4 Ka6 7. Da7+ Txa7#
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SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-10-08)
comment
Keywords: Stalemate dissolution, Phoenix (T), Umwandlungswechsel (D-T), Opferwechsel (D-D)
Genre: s#
FEN: K2B4/8/k1P5/1rR5/2Q5/8/8/8
Input: Frank Müller, 2013-06-08
Last update: Marcin Banaszek, 2020-10-12 more...
4 - P1279657
Jorma Pitkänen
2001 Suomen Tehtäväniekat 12/2000
P1279657
(8+6) C+
s#6
1. Dc1! Txc1 2. a8=D+ Kb1 3. Da3 Td1 4. Tb2+ Kc1 5. Te1 e2 6. Da2 Txe1#
1. ... Txc1 2. a8=D+ Kb1 3. Da3 Te1 4. Da2+ Kc1 5. Db2+ Kd1 6. Txe3 Txf1#
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SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-10-17)
comment
Keywords: Echo, Phoenix (D)
Genre: s#
FEN: 8/P7/8/1p6/1Pp5/2P1p2p/2Q1R2P/kr3R1K
Input: Frank Müller, 2013-10-29
Last update: Marcin Banaszek, 2020-10-19 more...
5 - P1380560
Mirko Degenkolbe
Steven B. Dowd

Orbit 2007
nach Tivadar Kardos
P1380560
(2+9) C+
h#10
1. Lg1 Kxg1 2. e2 Kh1 3. e1=S Kg1 4. Sf3 gxf3 5. e3 f4 6. e2 fxe5 7. e1=S e6 8. Sd3 e7 9. Sc5 e8=S 10. Sb7 Sc7#
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SCHRECKE: Kardos: P0500795 (2020-10-16)
comment
Keywords: Minimal (B), Sacrifice key, under-promotion (ssS), konsekutive Umwandlungen 3, Smothered mate, Antiphönix, Phoenix, Corner mate, Stalemate dissolution
Genre: h#
Computer test: Gustav 4.0c
FEN: kn6/n7/p7/4p3/4p3/4p1p1/5bP1/7K
Input: Felber, Volker, 2020-10-03
Last update: Felber, Volker, 2020-11-17 more...
6 - P1380855
James Malcom
MatPlus.net Forum 12/10/2020
P1380855
(14+14) C+
BP in 12.0
1. g3 d6 2. Lg2 Dd7 3. Ld5 Dh3 4. Le6 fxe6 5. a4 Kf7 6. a5 Kg6 7. a6 Kh5 8. axb7 g6 9. bxa8=L Lg7 10. Lg2 Lxb2 11. Sf3 Lg7 12. Lb2 Lb7
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James Malcom: The theme is that 5 bishops are fianchettoed-one more than normally allowed! (2020-10-13)
Rainer Staudte: Rules allow a 20-bishops-fianchetto. (2020-10-13)
Henrik Juel: Very nice, James
For this short PG any tester will suffice, but if you push this idea further, Natch is much faster than Jacobi (2020-10-13)
A.Buchanan: Can’t a fianchettoed bishop go round to the bank rank and do it again? So even 20 is not a barrier (2020-10-13)
A.Buchanan: Dates in PDB are yyyy-mm-dd or dd/mm/yyyy. Hence I will change publication date from Dec to Oct (2020-10-13)
James Malcom: Right-the date slipped me again!

Andrew, while a bishop can easily be fianchettoed twice+, about the number of bishops doing it, not how many times it is done. I'm sure that an expert could do 6 fianchettoing bishops. (2020-10-13)
A.Buchanan: I am joking James: this is cool already (2020-10-13)
comment
Keywords: under-promotion (L), Phoenix, Impostor (L), Unique Proof Game
Genre: Retro
Computer test: Jacobi v0.7.5
FEN: 1n4nr/pbp1p1bp/3pp1p1/7k/8/5NPq/1BPPPPBP/RN1QK2R
Input: James Malcom, 2020-10-13
Last update: James Malcom, 2020-10-14 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (1)
Felber, Volker (2)
Frank Müller (2)
James Malcom (1)