Die Schwalbe

8 problem(s) found in 3091 milliseconds (displaying 8 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT K='Rex Multiplex' AND A='Aschwanden, Reto'] [download as LaTeX]

1 - P1007296
Reto Aschwanden
11787 Die Schwalbe 199 02/2003
3. Preis
P1007296
(13+14) C+
BP in 19,0
1. d4 h5 2. d5 h4 3. d6 Th5 4. dxc7 d5 5. c4 Dd7 6. c5 Dh3 7. c6 Lg4 8. c8=L Sh6 9. Ld7+ Sxd7 10. c7 Sf6 11. c8=L Sh7 12. Lf5 Txf5 13. e4 0-0-0 14. e5 Td6 15. e6 Ta6 16. exf7 e5 17. b3 La3 18. f8=L Lb2 19. La3 Txa3
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Drei wUW-LL werden geschlagen, hier aber nicht durch Bauern!
Henrik Juel: Natch 3.1 found the solution but did not finish testing in more than an hour (2018-12-18)
Henrik Juel: Stelvio 2.0 is slightly faster than Stelvio 1.14: 55 sec. (2024-02-04)
comment
Keywords: Ceriani-Frolkin Theme (LLL), Unique Proof Game, Prentos Theme (LLL), Promotion (LLL)
Genre: Retro
Computer test: Natch 3.3: 47min, Euclide 1.11: 30min, Stelvio 1.14: 1min20sec.
FEN: 2k5/pp4pn/7n/3ppr2/6bp/rP5q/Pb3PPP/RNBQKBNR
Reprints: feenschach 155 2004
H1-5 WCCI 2001-2004
11787 Die Schwalbe 211, p. 16, 02/2005
Input: Gerd Wilts, 2003-03-23
Last update: Reto, 2023-03-22 more...
2 - P1011888
Michel Caillaud
Reto Aschwanden

Retros mailing list 31/12/2003
5. Preis
Gianni Donati 50th Jubilee Tourney
P1011888
(15+14) C+
BP in 24,5
1. c4 e5 2. c5 Ld6 3. cxd6 c5 4. Db3 c4 5. Dh3 c3 6. d3 c2 7. Ld2 c1=L 8. b4 Lb2 9. Sa3 Lc3 10. 0-0-0 g5 11. Le1 Ld2+ 12. Kb2 g4 13. Tc1 g3 14. Txc8 gxf2 15. Tc3 Dh4 16. g3 Sf6 17. Lg2 f1=L 18. e3 Le2 19. Sc4 Lf3 20. Se2 Tg8 21. Tf1 Tg6 22. Lh1 Lg2 23. Tf3 Lf1 24. Ka3 Lc1+ 25. Sb2
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Matching squares traced by the promoted Bishops! That this is managed without extra-set pieces is astounding. (PR Gianni Donati)
Cook: 1. c4 e5 2. c5 Ld6 3. cxd6 g5 4. d3 g4 5. e3 g3 6. Dg4 c5 7. Sc3 c4 8. Sa4 c3 9. Ld2 Sh6 10. 0-0-0 c2 11. b4 Tg8 12. Kb2 gxf2 13. g3 Tg6 14. Lg2 f1=L 15. Ka3 c1=L+ 16. Sb2 Le2 17. Le1 Ld2 18. Tc1 Sg8 19. Txc8 Lc1 20. Tc3 Lf3 21. Se2 Dh4 22. Tf1 Sf6 23. Lh1 Lg2 24. Tf3 Lf1 25. Dh3
Henrik Juel: an important keyword is missing: Donati theme
same in (some of) P1011889-P1011929 (2018-12-18)
Henrik Juel: Natch 3.1 found nothing in half an hour (2018-12-18)
Michel Caillaud: Reprint : H71 p.585, FIDE Album 2001-03

Cooked using Jacobi 0.7.5 with constraints :
1.c4 e5 2.c5 Ld6 3.cxd6 g5 4.d3 g4 5.e3 g3 6.Dg4 c5 7.Sc3 c4 8.Sa4 c3 9.Ld2 Sh6 10.0-0-0 c2 11.b4 Tg8 12.Kb2 gxf2 13.g3 Tg6 14.Lg2 f1=L 15.Ka3 c1=L+ 16.Sb2 Le2 17.Le1 Ld2 18.Tc1 Sg8 19.Txc8 Lc1 20.Tc3 Lf3 21.Se2 Dh4 22.Tf1 Sf6 23.Lh1 Lg2 24.Tf3 Lf1 25.Dh3

Correction : sTg6 to g4 (21...Tg4 instead of 21...Tg6 in the solution)
With the set of constraints used to uncork the cook, Jacobi 0.7.5 finds only the intended solution... (2021-09-20)
Michel Caillaud: The correction sTg6 to g4 was published in StrateGems 99 (p.138, sept. 2022)
It is C+ by Stelvio 0.93 (2022-12-18)
comment
Keywords: Unique Proof Game, Round Trip, Pure Round Trip (ll), Obvious promotion (l), Promotion (ll), Donati Theme
Genre: Retro
Computer test: Resolution time: Natch 3.3: ---, Euclide 1.11: ---, Stelvio 1.14: 15:10min
FEN: rn2k3/pp1p1p1p/3P1n2/4p3/1P4rq/K1RPPRPQ/PN2N2P/2b1Bb1B
Input: Gerd Wilts, 2004-01-01
Last update: Silvio Baier, 2023-08-15 more...
3 - P1013082
Reto Aschwanden
R229 Probleemblad 02/2004
1. Preis
P1013082
(14+10) C+
BP in 21,5
1. a4 f5 2. Ta3 f4 3. Th3 f3 4. Th4 fxg2 5. Sh3 g1=D 6. f4 Db6 7. Sc3 Dxb2 8. Lxb2 g5 9. Db1 g4 10. Sd1 g3 11. Le5 g2 12. c3 g1=S 13. Dxh7 Sf3+ 14. exf3 Sc6 15. Ld3 Sd4 16. 0-0 Se2+ 17. Kh1 Sg1 18. Txg1 c6 19. Txg8 Db6 20. Lg6+ Kd8 21. d3 Dg1+ 22. Sxg1
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Schlag der beiden Anti-Pronkin-Steine Dg1 und Sg1 (auf demselben Feld!)
Reto: Solving in parallel with Stelvio v1.25 at brings this down to 24h (with room for improvement still) (2023-05-28)
comment
Keywords: Anti-Pronkin (ds), Ceriani-Frolkin Theme (ds), Unique Proof Game
Genre: Retro
Computer test: Stelvio 1.2, 101h. This is way too slow...
FEN: r1bk1bRr/pp1pp2Q/2p3B1/4B3/P4P1R/2PP1P2/7P/3N2NK
Input: Gerd Wilts, 2004-02-20
Last update: Reto, 2023-05-15 more...
4 - P1067404
Reto Aschwanden
8967 feenschach 152 07-09/2003
P1067404
(11+15) C+
BP in 20,5
1. e3 h5 2. La6 bxa6 3. f4 Lb7 4. f5 Ld5 5. f6 Sc6 6. fxg7 f5 7. g4 Sf6 8. g8=D Tc8 9. De6 Lh6 10. Dd6 cxd6 11. g5 Da5 12. g6 Sd8 13. g7 Tc3 14. g8=L Lc4 15. Ld5 Da4 16. Lg2 0-0 17. Dg4 Kh8 18. Dg8 Txg8 19. Lf1 Txg1 20. d3 Txf1 21. Kd2
play all play one stop play next play all
Schlag der Pronkin- und Antipronkin-Themafigur.
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 00:01:15 (hh:mm:ss).
Keine Lösung: BP 19.5, BP 20.0. (2023-03-01)
comment
Keywords: Anti-Pronkin (D), Unique Proof Game, Pronkin Theme (L)
Genre: Retro
Computer test: Solving time: Natch 3.3: 3:58h , Euclide 1.11: >10h, Stelvio 1.15: 1:40min
FEN: 3n3k/p2pp3/p2p1n1b/5p1p/q1b5/2rPP3/PPPK3P/RNB2r1R
Input: Gerd Wilts, 2005-01-09
Last update: Reto, 2023-03-29 more...
5 - P1068028
Reto Aschwanden
12768 Die Schwalbe 214 08/2005
1. Preis
P1068028
(14+11) C+
BP in 20,0
1. h4 d5 2. h5 d4 3. Th4 d3 4. Sh3 dxc2 5. d4 a5 6. Dd2 a4 7. Dg5 a3 8. Le3 c1=L 9. f4 Ld2+ 10. Sxd2 axb2 11. Sf3 b1=L 12. Sh2 Lg6 13. f5 e5 14. fxg6 Lf5 15. 0-0-0 Lb1 16. Kxb1 e4 17. Txe4+ Kd7 18. g4 La3 19. Lg2 Lc1 20. Txc1 Kc8
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Anti-Pronkin-Thema mit 2 sLL, die geschlagen werden.
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comment
Keywords: Anti-Pronkin (ll), Unique Proof Game
Genre: Retro
Computer test: Solving time: Natch 3.3: 15:53min, Euclide 1.11: 24sec, Stelvio 1.14: 47sec
FEN: rnkq2nr/1pp2ppp/6P1/6QP/3PR1P1/4B2N/P3P1BN/1KR5
Input: Gerd Wilts, 2005-09-04
Last update: Reto, 2023-03-24 more...
6 - P1080421
Reto Aschwanden
R285c Probleemblad 07-08/2005
P1080421
(13+13) C+
BP in 22,0
1. h4 c5 2. h5 c4 3. Th4 c3 4. Tc4 a6 5. Txc8 Sc6 6. Txa8 Db8 7. Ta7 Dg3 8. fxg3 d5 9. Kf2 d4 10. Kf3 d3 11. Kg4 dxc2 12. Kh4 cxb1=L 13. Db3 e5 14. Db6 e4 15. b3 e3 16. Lb2 exd2 17. e3 Lf5 18. Ld3 d1=T 19. Lc2 Td8 20. Td1 Ta8 21. La1 Lc8 22. Td7 Sb8
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Ersatz der beiden auf ihren Ursprungsfeldern geschlagenen sTa8 und sLc8 durch Pronkin-Figuren.
Reto: The 21.5 move paths leading to this position are known to me and they are not cooks in my eyes, as move parity is part of the position to find. Anyone who likes can think "exact spg" or similar if that helps them. (2023-03-13)
A.Buchanan: A number of different opinions exist. To me:
(1) a shorter PG, unique or not, does not cook a PG in x.y.
(2) This is true whether the delta is z.0 or z.5 moves.
(3) A composer may choose to include "exactly" in the stipulation, but if they choose not to then the composer's stipulation "Originalforderung" may not be fiddled with by later generations.
(4) However, there may be a "database stipulation" added by curators for uniformity within a catalogue, and if the database stipulation does not match the Originalforderung, then the Originalforderung must appear in an Originalforderung field, not just as a comment. [PDB does not support this feature.]
(5) Accidental shorter solutions do constitute a defect, in my view.
Again to say: this is just my personal opinion :) (2023-03-14)
more ...
comment
Keywords: Unique Proof Game, Pronkin Theme (tl)
Genre: Retro
Computer test: Solving time: Natch 3.3: >10h, Euclide 1.11: >10h, Stelvio 1.15: 33:30min
FEN: rnb1kbnr/Rp1R1ppp/pQ6/7P/7K/1Pp1P1P1/P1B3P1/B5N1
Reprints: H34 Vkontakte 2013
H34 Phénix 261/262, p. 10354, 2013
Input: Gerd Wilts, 2009-01-06
Last update: Reto, 2023-03-30 more...
7 - P1388892
Reto Aschwanden
Michel Caillaud

18363 Die Schwalbe 305 10/2020
P1388892
(14+14)
Beweispartie in 27,5 Zügen
1. h4 h5 2. Th3 Th6 3. Td3 Ta6 4. e3 Ta3 5. Df3 a5 6. Df6 exf6 7. b4 Lc5 8. b5 La7 9. b6 De7 10. bxa7 b6 11. Sc3 Lb7 12. Sa4 Lf3 13. Sc5 Sc6 14. Sa6 0-0-0 15. Sb8 g5 16. a8=D gxh4 17. Da7 h3 18. Sa6 h2 19. Sc5 h1=T 20. Sb7 Th4 21. Da6 Tha4 22. Dc4 Db4 23. Sc5 Sge7 24. Se4 Tg8 25. Sc3 Tg3 26. Sb1 Lg4 27. Dc3 Tf3 28. gxf3
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The knight undertakes a 12 move captureless roundtrip to prevent twice that the pheni\x queen gives harmful check (this ties the record for the longest captureless roundtrip by a knight). Not computer tested.
Reto: A version of this is C+ by Stelvio 2.0: Ra4-d4 and Qb4-e4 (the content remains the same, but easier to test). (2023-12-17)
Reto: The above comment should read: Ra4 to d4, Qb4 to e4. (2023-12-17)
comment
Keywords: Round Trip (S schlagfrei)), Check Protection, Unique Proof Game
Genre: Retro
FEN: 2k5/2ppnp2/1pn2p2/p6p/rq4b1/r1QRPP2/P1PP1P2/RNB1KBN1
Input: Schwalbe, 2021-04-21
Last update: Reto, 2023-12-17 more...
8 - P1404842
Reto Aschwanden
18879 Die Schwalbe 313 02/2022
P1404842
(13+13) C+
BP in 18.0
1. f4 a5 2. f5 a4 3. f6 Ta5 4. fxg7 f5 5. gxh8=L Lh6 6. d4 Le3 7. d5 f4 8. d6 Tg5 9. dxc7 d5 10. c4 Dd7 11. c5 Dh3 12. c6 Le6 13. c8=L Sh6 14. c7 Sf7 15. Ld7+ Kxd7 16. c8=S h6 17. Sd6 Kxd6 18. Le5+ Kxe5 Dia
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Alle drei Prentos-Steine werden vom sK geschlagen.
Henrik Juel: cooked, e.g.
1. Bd2-d4 Ba7-a5 2. Bd4-d5 Ba5-a4 3. Bd5-d6 Sg8-h6
4. Bd6xc7 Bd7-d5 5. Bc2-c3 Lc8-e6 6. Dd1-d2 Dd8xc7
7. Bf2-f4 Dc7xc3 8. Bf4-f5 Dc3-h3 9. Bf5-f6 Ke8-d7
10. Bf6xg7 Bf7-f5 11. Dd2-a5 Sh6-f7 12. Bg7-g8=D Lf8-h6
13. Da5xa8 Lh6-e3 14. Da8-a6 Bf5-f4 15. Da6-d6 Kd7xd6
16. Dg8-c8 Kd6-e5 17. Dc8-c2 Th8-g8 18. Dc2-d1 Tg8-g6 (2022-10-03)
Mario Richter: The black rook is on g5 (and not on g6)! - diagram is now corrected. (2022-10-04)
Henrik Juel: Thanks, Mario
The same cook works with 18... Tg8-g5, so there may be more diagram errors (2022-10-04)
Mario Richter: You are right, Henrik, I overlooked that a black pawn is on h6 and not on h7, I changed zhe diagram accordingly. (2022-10-04)
Henrik Juel: Now C+ Euclide 1.01 (2022-10-04)
Henrik Juel: Actually C++ (meaning no solution in 17.5, and surely no shorter solution) (2022-10-04)
comment
Keywords: bi-coloured Bristol, Prentos Theme (LLS), Homebase
Genre: Retro
Computer test: Solving time: Natch 3.3: 2:09min, Euclide 1.11: 2:12min, Stelvio 1.14: 6sec
FEN: 1n6/1p2pn2/4b2p/3pk1r1/p4p2/4b2q/PP2P1PP/RNBQKBNR
Input: Gunter Jordan, 2022-10-03
Last update: Reto, 2023-03-25 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (6)
Schwalbe (1)
Gunter Jordan (1)