Die Schwalbe

8 problem(s) found in 2830 milliseconds (displaying 8 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT K='Schnoebelen-Thema' AND K='Serienzüger'] [download as LaTeX]

1 - P0000250
Nikita M. Plaksin
Valery Liskovets

7577v Die Schwalbe 132 12/1991
P0000250
(5+14)
ser-h#5 (AP)
Typ Tauber/Caillaud
1. Kd4 2. bxc3ep (zuletzt nur K,T-Zug oder c2-c4) 3. e5! (nicht 4. Tb4? weil zuletzt K,T-Zug und 0-0-0 nicht mehr möglich) 4. Tb4 (zuletzt e7xLd8=S möglich) 5. Tc4 & 1. 0-0-0# nicht 1. Td1#? wegen fehlender AP-Legalisierung
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"das zeigt die Paradoxie der AP-Bedingung!" (MS). Gleich 1. bxc3 ep.? und dann 2. Kd4 geht natürlich nicht, weil zuvor außer K,T-Zug und c2-c4 auch S-Züge und c3-c4 möglich waren. "Interessanter und genau abgestimmter Lösungsverlauf" (GW) "Sehr schöne und ökonomische Verbindung zwischen konsequentem sh# und AP!" (TB) Mit 'Typ Tauber/Caillaud' ist gemeint, daß die einzelnen Stellungen doch als retroanlytischer Gesamtkomplex betrachtet werden dürfen/sollen (sonst wäre keine AP-Legalisierung möglich), obwohl sie ja aufgrund der retroanalytischen Neubewertung nach jedem Rückzug voneinander unabhängig sind. 6L./5+5P.
A.Buchanan: "By 'type Tauber/Caillaud' it is meant that the individual positions may/should be regarded as a retroanalytic overall complex (otherwise no AP legalization would be possible), although they are independent of each other due to the retroanalytic reassessment after each retraction." (2023-06-29)
comment
Keywords: Castling (wl), a posteriori (AP), Promotion (S), Seriesmover, Consequent, En passant
Genre: Retro, Fairies
FEN: 1N6/1ppppppn/n7/1Pq1k3/1pP1r3/4p3/1r6/R3K3
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-06-29 more...
2 - P0004479
Matjaz Zigman
Länderkampf Mazedonien-Slowenien 1969
6. Platz
P0004479
(10+13) C+
ser-h#5* (AP)
* 1. ... Lxd2#
1. dxe3ep 2. Txf2 3. Txg2 4. Th2 5. Th3 0-0#
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comment
Keywords: Castling (wk), Seriesmover, En passant as key, a posteriori (AP) (Type Petrovic)
Genre: Retro, Fairies
Computer test: HC+ Popeye 4.61 after analysis
FEN: 8/8/8/4pPp1/1p1pPkpb/1P1P2p1/pPpr1PP1/rbB1K2R
Reprints: 103 Bilten 1970 1971
(70) Problem 144-147 12/1971
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-07-20 more...
3 - P1004439
Unto Heinonen
A9 Problemkiste 137 10/2001
P1004439
(6+3)
-1w, dann ser-h=9
R: 1. a7-a8=D, dann 1. a1=L 2. Le5 3. Lb8 4. Kc7 5. f2 6. f1=S 7. Sd2 8. Sc4 9. Sxb6 axb8=T=
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Henrik Juel: C+ Popeye 4.61 (without the retraction, which is unique) (2022-11-08)
comment
Keywords: Help retractor, Seriesmover, Allumwandlung
Genre: Retro, Fairies
FEN: Q2R4/1k6/1N6/B4K2/8/5p2/p7/7B
Input: Gerd Wilts, 2003-01-11
Last update: A.Buchanan, 2024-01-12 more...
4 - P1012052
Henri Nouguier
diagrammes 2004
P1012052
(9+15)
shc#6
1. dxc3ep 2. Kxb5 3. Kc6 4. Kd7 5. Ke8 6. 0-0 Txg7#
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Un des PNd a pris 1 pièce blanche. pour venir de e7. Donc les PB b, c et d ne peuvent se croiser. Le PBg6 ne peut venir de f5 car il faudrait 2 prises noires! Seule reste le dernier coup blanc 0... c2-c4 Ceci implique que le FNb1 est issue de promtion ! C'est le PNb7, il aurait pris 2 pièces blanches. Les PNg5 et h5 ont pris 2 pièces blanches.
No. 11661 HN
A.Buchanan: “Obvious promotion” is intended to refer to something visible in the initial diagram position, not what is reached during series play (2022-09-14)
A.Buchanan: Similarly “non-standard material (2022-09-14)
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comment
Keywords: Seriesmover, Consequent, En passant as key, Promotion in the retro play (sLb1), Castling, Valladao Task
Genre: Retro, Fairies
FEN: 7r/5pnR/5PnR/1Pp2ppq/1kPp4/p2P4/P2pP3/Kbb4r
Input: Henri Nouguier, 2004-01-11
Last update: Mario Richter, 2022-09-14 more...
5 - P1093521
Göran Wicklund
8662v Springaren 02/1977
P1093521
(16+8)
ser-BP in 53
1. b4 2. b5 3. b6 4. bxa7 5. axb8=L 6. La7 7. Le3 8. Lg5 9. f4 10. Kf2 11. Kg3 12. Kh4 13. g3 14. Lh3 15. Lf5 16. h3 17. Th2 18. Tf2 19. Tf3 20. Ta3 21. Txa8 22. Ta4 23. Te4 24. a4 25. a5 26. a6 27. a7 28. a8=S 29. Sb6 30. Sxc8 31. Sa7 32. Sc6 33. Sxd8 34. Se6 35. Sxf8 36. Sg6 37. Sxh8 38. Sg6 39. Se5 40. Sg4 41. Sh6 42. Sxg8 43. Sh6 44. Sg4 45. Se3 46. Sg2 47. e3 48. Se2 49. Sec3 50. Sa2 51. c3 52. Da4 53. Da8#
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Frank Müller: Korrektur in Springaren 08/1997, Seite 161: ser-Beweispartie in 53 mit wDa8 (2009-11-12)
paul: Author's solution: 1. b4 2. b5 3. b6 4. ba7 5. ab8=B 6. Ba7 7. Be3 8. Bg5 9. f4 10. Kf2 11. Kg3 12. Kh4 13. g3 14. Bh3 15. Bf5 16. h3 17. Rh2 18. Rf2 19. Rf3 20. Ra3 21. Rxa8 22. Ra4 23. Re4 24. a4 25. a5 26. a6 27. a7 28. a8=N 29. Nb6 30. Nxc8 31. Na7 32. Nc6 33. Nxd8 34. Ne6 35. Nxf8 36. Ng6 37. Nxh8 38. Ng6 39. Ne5 40. Ng4 41. Nh6 42. Nxg8 43. Nh6 44. Ng4 45. Ne3 46. Ng2 47. e3 48. Ne2 49. Nec3 50. Na2 51. c3 52. Qa4 53. Qa8# (2010-05-29)
paul: See P1007350 (2010-05-29)
Henrik Juel: I believe that the year should be 1997 (2022-09-30)
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comment
Keywords: Seriesmover, Homebase
Genre: Fairies, Retro
FEN: Q3k3/1ppppppp/8/5BB1/4RP1K/2P1P1PP/N2P2N1/RNB5
Input: hpr, 2009-11-01
Last update: A.Buchanan, 2023-06-03 more...
6 - P1299824
Georgi Hadzi-Vaskov
Länderkampf Mazedonien-Slowenien 1969
4. Platz
P1299824
(9+6) cooked
ser-h#10
1. bxc3ep 2. cxb2 3. Kc3 4. Kc2 5. Kc1 6. b1=T 7. Tb2 8. Kb1 9. Ka1 10. Txa2 0-0#
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Cook: 1. a3 2. axb2 3. b1=S 4. b3 5. Kc3 6. Kb2 7. Ka3 8. Ka4 9. Sa3 axb3#
Anton Baumann: cook: 2 Lösungen in 9 Zügen: 1.a3 sowie 1.b3
1.a3 2.axb2 3.b1=S 4.b3 5.Kc3 6.Kb2 7.Ka3 8.Ka4 9.Sa3 axb3# (mit ZU) (2020-05-11)
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comment
Keywords: Seriesmover, En passant as key, a posteriori (AP) (Type Petrovic), Castling (wk)
Genre: Fairies, Retro
FEN: 8/8/1P6/PRP5/ppPk4/3pp2p/PP6/4K2R
Reprints: 101 Bilten 1970 1971
Input: Frank Müller, 2015-03-22
Last update: A.Buchanan, 2023-04-06 more...
7 - P1347359
François Labelle
8061 Phénix 279-280, p. 10986, 2017
P1347359
(16+16)
ser-BP in 31
1. Sc3 2. Sd5 3. c3 4. Da4 5. Da6 6. a4 7. a5 8. Ta4 9. Tg4 10. Tg5 11. g4 12. Lg2 13. Le4 14. Lb1 15. d3 16. Lf4 17. e3 18. Se2 19. Tg1 20. Tg3 21. Th3 22. Th6 23. h3 24. Lh2 25. Sdf4 26. Sh5 27. f4 28. Kf2 29. Kg3 30. Kh4 31. Seg3
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Längste eindeutige Serienzug-BP ohne Schläge
Cf: P1017659
paul: Verified by Jacobi with: stip ser-dia 31 forsyth rsbqkbsr/pppppppp/Q6R/P5RS/5PPK/2PPP1SP/1P5B/1B6 (2021-12-09)
Joost de Heer: This is probably Kriegspiel? If there are no black pieces, the knight path on moves 25/26 can go over f6 as well. (2022-10-25)
A.Buchanan: Good catch, Joost. The black units (because of bK) are necessary. I haven’t heard the term Kriegspiel used to describe this. (2022-10-25)
Henrik Juel: This is a series proof game (where only White moves, and he may not check with an intermediate move)
I see no relation to the fairy condition Kriegspiel (2022-10-25)
comment
Keywords: Unique Proof Game, Seriesmover, Move Length Record (ex-aequo), Capture-free, Homebase (s)
Genre: Retro, Fairies
Computer test: paul: Verified by Jacobi with: stip ser-dia 31 forsyth rsbqkbsr/pppppppp/Q6R/P5RS/5PPK/2PPP1SP/1P5B/1B6
FEN: rnbqkbnr/pppppppp/Q6R/P5RN/5PPK/2PPP1NP/1P5B/1B6
Input: A.Buchanan, 2018-02-28
Last update: A.Buchanan, 2023-06-29 more...
8 - P1407176
Andrew Buchanan
Retros mailing list 01/01/2023
P1407176
(16+0)
ser-PG in 19
How many solutions?
1. a4 2. Ta3 3. d4 4. h4 5. Thh3 6. Thf3 7. Tf6 8. f4 9. f5 10. Lf4 11. e3 12. Lc4 13. Ld5 14. c4 15. Db3 16. Db6 17. b4 18. Tb3 19. b5 for example
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2023 solutions
Joost de Heer: See Problemas april 2023 for a detailed explanation on how to calculate the number of solutions. (2023-04-04)
A.Buchanan: Hi Joost thanks for the comment. This problem basically is about "triangle + triangle = square", but the article uses a different mechanism (Elastic Belt) to reach the same number (2023-04-05)
comment
Keywords: Path enumeration (year), Seriesmover, Non-Unique Proof Game
Genre: Retro, Mathematics
FEN: 8/8/1Q3R2/1P1B1P2/P1PP1B1P/1R2P3/6P1/1N2K1N1
Input: A.Buchanan, 2023-01-08
Last update: A.Buchanan, 2023-08-27 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (3)
Henri Nouguier (1)
hpr (1)
Frank Müller (1)
A.Buchanan (2)