Die Schwalbe

22 problem(s) found in 3136 milliseconds (displaying 22 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT A='Gomez Palazon, Luis' AND K='Schnoebelen-Thema'] [download as LaTeX]

1 - P1068641
Michel Caillaud
Moutecidis Fougiaxis Prentos Jubiläumst. 2006
1. Preis
K. Prentos 40 Jahre
P1068641
(12+12) C+
BP in 19,5
1. b4 h5 2. b5 h4 3. b6 Th5 4. bxa7 Sh6 5. axb8=T Taa5 6. d4 Tag5 7. d5 f5 8. d6 Sf7 9. dxe7 d5 10. c4 Kd7 11. e8=T Df6 12. c5 Lxc5 13. a4 Lb6 14. a5 c5 15. a6 Kc7 16. a7 Ld7 17. a8=L Lxe8 18. Ta7 Kxb8 19. Txb7+ Kxa8 20. Tb8+
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Bob Baker: C+ Stelvio 2.0 Solving time: 00:00:39 seconds (2024-02-28)
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Keywords: Unique Proof Game, Schnoebelen Theme (TTL), Anti-Pronkin (T), Prentos Theme (TTL), Ceriani-Frolkin Theme (TTL), Promotion (TTL)
Genre: Retro
Computer test: Natch 3.1 (3:58 h)
FEN: kR2b3/5np1/1b3q2/2pp1prr/7p/8/4PPPP/1NBQKBNR
Reprints: (2) StrateGems 10/2007
Input: Gerd Wilts, 2006-12-21
Last update: A.Buchanan, 2021-02-20 more...
2 - P1098713
Guy Sobrecases
Internet-Turnier 28/01/2010
3. Preis Weihnachtsturnier 2009, Retro
P1098713
(14+14) C+
BP in 9,5
2 Varianten
Immun-Schach
1. e4 b5 2. Se2 b4 3. Sec3 bxc3 4. b4
4. ... La6 5. Lb2 cxb2 6. Sa3 b1=L 7. Txb1 Lb7 8. Tb3 a6 9. Lxa6 Lc8 10. Td3
4. ... a6 5. Lb2 cxb2 6. Sa3 b1=T 7. Lxa6 Tb3! 8. Tb1 Ta7 9. Txb3 Ta8 10. Td3
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Judge Michel Caillaud: Composer succeeds in making Schnoebelen promotion less obvious, thanks to using 2 phases with 2 switchbacks as motivation. The need of a black tempo is the trick that allows differentiation of the phases (and the Schnoebelen Rook becomes an "anti-Schnoebelen" Rook!). Well done.
Sobrecases: Specific try play:

1.Sf3? b5 2.b3 b4 3.Ba3 b×a3 4.b4 Bb7 5.S×a3?? B×f3 6.Rb1 Bc6 7.e4 a6 8.B×a6 Bb7 9.Rb3 Bc8 10. Rd3

4.?a6!? 5.S×a3 Bb7 6.Rb1 B×f3?? 7.Rb3 Bc6 8.e4 Bb7 9.B×a6 Bc8 10.Rd3 (2010-04-12)
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Keywords: Unique Proof Game, Immune Chess, Schnoebelen Theme (TL), Prentos Theme, Ceriani-Frolkin Theme, Homebase (s)
Genre: Retro, Fairies
Computer test: Jacobi+
FEN: rnbqkbnr/2pppppp/B7/8/1P2P3/N2R4/P1PP1PPP/3QK2R
Input: Gerd Wilts, 2010-02-02
Last update: A.Buchanan, 2023-06-29 more...
3 - P1256160
Bernd Graefrath
14448 Die Schwalbe 242 04/2010
Dem Taoisten Hilmar zum 60. Geburtstag gewidmet
P1256160
(15+11)
BP in genau 6,0
Tibetschach
1. e3 a6 2. Lxa6 bxa6[=wBa6] 3. Df3 Lb7 4. axb7 Sa6 5. bxa8=D Dxa8 6.Dxa8+ Sb8
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Moldenhauer: Computerprüfung: C+ Jacobi v0.7.6 beta1 in 6 Min. (2022-08-18)
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Keywords: Unique Proof Game, Tibetan chess, Schnoebelen Theme (D), Anti-Pronkin (D), Prentos Theme, Ceriani-Frolkin Theme
Genre: Retro, Fairies
FEN: Qn2kbnr/2pppppp/8/8/8/4P3/PPPP1PPP/RNB1K1NR
Input: Gerd Wilts, 2012-12-13
Last update: A.Buchanan, 2019-02-03 more...
4 - P1274528
Andrew Buchanan
15611 Die Schwalbe 261 06/2013
P1274528
(10+5) C+
Proof game in 12.0
1. f4 e5 2. fxe5 Sf6 3. exf6 Ld6 4. fxg7 Lxh2 5. gxh8=L Lxg1 6. Txh7 Le3 7. Txf7 Lxd2+ 8. Dxd2 a5 9. Dxa5 Kxf7 10. Dxc7 Dxh8 11. Dxc8 De8 12. Dxe8+ Kxe8
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Die Schwalbe 12/2013
MRi: "Nach dem ersten, naturgemäs schlaglosen Zug muss Weiß im Rest der Partie permanent schlagen. Dass sich gleich drei weiße Steine aktiv an dieser Fresserei beteiligen, kommt ebenso überraschend wie der Schnoebelen-Läufer auf h8, den man beim bloßen Blick auf die Endstellung wohl kaum erwartet hätte. Netter (Computer?!)-Fund im Bereich der At-Home-BPs."
HG: Siehe Kommentar zu 15609; hier mit Schnoebelen-Läufer, sK-Rückhehr und sD-Opferzug."
SBa zu 15069 und 15611: "Das dürften die ersten orthodoxen Doppelhomebase it Schnoebelenumwandungen sein. 156909 ist inbesondere weben des genialen Tempozugs Ke7, der die eigentliche Begründung der Umwandlung liefert, viel besser, die andere errinerte eher an Massakerbeweispartien, Nichesdestotrotz will das erstmal konstruiert sein.
A.Buchanan: @Mario: no computer: found by hand over the course of several evenings on a business trip to Mumbai, but I take the suspicion as a compliment! :D (2021-07-18)
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Keywords: Unique Proof Game, Homebase (2), Schnoebelen Theme (L), Switchback (k), Ceriani-Frolkin Theme (L), Prentos Theme (L)
Genre: Retro
FEN: rn2k3/1p1p4/8/8/8/8/PPP1P1P1/RNB1KB2
Input: Mario Richter, 2013-07-20
Last update: A.Buchanan, 2021-07-18 more...
5 - P1316696
Torsten Linss
11180 feenschach 213 05-06/2015
Thomas Brand gewidmet
P1316696
(2+4) C+
h#6
1. c3 Kg4 2. c2 Kf3 3. c1=T Ke2 4. d1=L+ Kd2 5. Lb3 Kxc1 6. La2 Ld4#
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Schnoebelen-sT
See P1359492 and P1359493
VL: Reprint: (1) Problemas 37, p.1232, 01/2022 (2022-01-23)
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Keywords: Schnoebelen Theme (t), Minimal, Promotion (tl), Prentos Theme (t), Ceriani-Frolkin Theme (t)
Genre: h#
Computer test: DB2013.1
FEN: 8/8/8/3p3K/2p5/4B3/3p4/k7
Input: TLi, 2016-02-04
Last update: A.Buchanan, 2021-05-03 more...
6 - P1332546
Nicolas Dupont
528 Julias Fairies 16/04/2014
1st Prize
P1332546
(14+14)
BP in 16
Disparate Steine
1. d4 Sf6 2. d5 Sh5 3. Dd4 a5 4. Sf3 Ta6 5. d6 Tb6 6. dxc7 Sa6 7. Ld2 d5 8. Sh4 Lg4 9. c8=D Lxe2 10. Kxe2 e5 11. Kf3 Dd7 12. Lb5+ Ke7 13. La4 Ke6 14. Te1 Le7 15. Te2 Db5 16. Le1+ Txc8
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It is a fine demonstration of the potential of the fairy condition Disparate. In the solution, a white promotion (into piece X) occurs on square c8 before any move of [Qd8] or [Ke8]. The following move Qd7 proves that X is not a rook (it can still be a queen because of the fairy condition!). The immediately following move Ke7 proves that X is not a knight. Then Ke6 is played, followed by a move by Qd7 which proves that X is not a bishop.
X thus can only be a queen! (We still have to show that the position is legal.) Only after completion of the proof, the promoted queen is captured. It is admirable that the author managed to compose a move sequence obeying all mentioned constraints concerning the move order. A rich demonstration of the fairy condition, exciting to solve.
Henrik Juel: Definition of Disparate from Julia's Fairies:
If one side makes a move with a piece of type “x” (black, white,neutral, half-neutral, etc., King included), the other side cannot answer immediately by moving a piece of the same type “x”.). A pawn promoting is a pawn move.
To me, it is not clear from the definition that 9.c8 is undetermined, and only later is inferred to be 9.c8=Q
Why can White not decide to promote to queen? (2017-03-18)
Henrik Juel: I misunderstood your text, Vlaicu
Now I see that White indeed decides to promote to queen, and your argument shows why the other promotion choices do not work in this proof game (2017-03-18)
Henrik Juel: ... even though the promoted man never moves (2017-03-18)
paul: Jacobi checked the last 12 moves and gave unique solution.
cond disparate
stip dia 4 pieces white Ke1 Qd4 Ra1h1 Bc1f1 Sb1f3 Pa2b2c2e2f2g2h2d5 black Ke8 Qd8 Ra6h8 Bc8f8 Sh5b8 Pa5b7c7d7e7f7g7h7
stip dia 12 forsyth 2r5/1p2bppp/sr2k3/pq1pp2s/B2Q3S/5K2/PPP1RPPP/RS2B3 (2023-07-12)
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Keywords: Schnoebelen Theme, Disparate, Prentos Theme, Ceriani-Frolkin Theme
Genre: Fairies, Retro
FEN: 2r5/1p2bppp/nr2k3/pq1pp2n/B2Q3N/5K2/PPP1RPPP/RN2B3
Input: Vlaicu Crisan, 2017-03-18
Last update: A.Buchanan, 2019-02-03 more...
7 - P1359492
Andrew Buchanan
17464 Die Schwalbe 291, p. 492, 06/2018
to Torsten Linß
P1359492
(2+4) C+
h#6
1. f3 Kg4 2. f2 Kf3 3. c1=L Ke2 4. f1=L+ Kd1 5. Lc4 Kxc1 6. La2 Lc3#
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See P1316696 and P1359493
Henrik Juel: Pg2 prevents cooks ending 5... Kxc2 6.La2 Lc3# (2019-01-12)
A.Buchanan: I just realized I chose the dedications of these two problems the right way round luckily: L for Linß and S for Schnoebelen :D (2019-01-12)
VL: Reprint: (2) Problemas 37, p.1232, 01/2022 (2022-01-23)
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Keywords: Minimal, Schnoebelen Theme (l), Prentos Theme (l), Ceriani-Frolkin Theme (l), Miniature, Promotion (ll)
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/8/8/7K/5p2/8/2pB2p1/k7
Input: Felber, Volker, 2019-01-12
Last update: A.Buchanan, 2021-01-21 more...
8 - P1359493
Andrew Buchanan
17465 Die Schwalbe 291, p. 492, 06/2018
to Philippe Schnoebelen
P1359493
(2+4) C+
h#6
1. c1=S Lxe7 2. d3 Kf2 3. d2 Ke3 4. d1=L Kd2 5. Lb3 Kxc1 6. La2 Lf6#
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See P1316696 and P1359492
And see P1375440 for a fairy version
Mario Richter: Henrik wrote: "The term Schnoebelen theme first was used in proof games".

Even if it's like fighting against windmills, "Schnoebelen promotions" were *NOT* first used in proof games, but in orthodox retros. Ceriani invented the theme in 1948, maybe even before Philippe was born!
See my post in the Retros Mailig List:
https://pairlist1.pair.net/pipermail/retros/2008-December/002752.html (2019-01-13)
VL: Reprint: (3) Problemas 37, p.1232, 01/2022 (2022-01-23)
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Keywords: Minimal, Promotion key (s), Schnoebelen Theme (s), Prentos Theme (s), Ceriani-Frolkin Theme (s), Miniature, Promotion (sl)
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/4p3/5B2/8/3p4/8/2p5/k5K1
Input: Felber, Volker, 2019-01-12
Last update: A.Buchanan, 2021-01-21 more...
9 - P1375440
Andrew Buchanan
17465v Die Schwalbe 291, p. 492, 06/2018
to Rewan Demontay
P1375440
(3+4) C+
h#6
White Dummy f2
1. c1=DU Lxe7 2. d3 Kf1 3. d2 Ke2 4. d1=L Kd2 5. Lb3 Kxc1 6. La2 Lf6#
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Added 1 Dummy to P1359493, and changed the dedicatee. My luck with this little series continues to hold: the dedicatee's surname begins with a D!
James Malcom: Andrew, I just found this today-I thank you very much, but perhaps it holds no more, for my true name is known now! (2020-10-28)
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Keywords: Miniature, Promotion key (du), Schnoebelen Theme (du), Prentos Theme (du), Ceriani-Frolkin Theme (du), Promotion (du,l)
Pieces: i = Dummy (DU)
Genre: h#, Fairies
Computer test: Popeye 4.81
FEN: 8/4p3/5B2/8/3p4/8/2p2I2/k5K1
Input: A.Buchanan, 2020-05-03
Last update: A.Buchanan, 2021-05-01 more...
10 - P1375654
Andrew Buchanan
(2) MatPlus.net Forum 09/05/2020
in memory of Wilhelm Steinitz
P1375654
(13+14) C+
PG in 8.0 (-:
1. f4 a5 2. f5 a4 3. f6 a3 4. fxe7 axb2 5. exf8=B! bxa1=L 6. Lb2 Ke7! 7. Lf6+ Ke6! 8. Sc3 Dxf8!
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Henrik Juel: The solution is almost given away by the keywords
1.f4 a5 2.f5 a4 3.f6 a3 4.fxe7 axb2 5.exf8! bxa1=L 6.Lb2 Ke7 7.Lf6+ Ke6 8.Sc3 Dxf8
Even though Black captures the white man on f8, promotion to DTLS will not work
First Schnoebelen with dummy pawn as the captured man, I would think
Very good, Andrew (2020-05-08)
Henrik Juel: Another first:
Never before was a problem commented in the PDB before it was published... (2020-05-08)
James Malcom: When Andrew messaged me this asking about a PG with two dummies, I came back almost right away with the same idea, albeit in a flawed form-1. a4 f5 2. a5 f4 3. a6 f3 4. axb7 fxe2 5. bxa8=Q exd1 6. Ke2 e6 7. Ke3 Qg5+ 8. Kd4 Qxg2 9. Qf3 Qxh1 10. Qxd1. Great minds think alike after all! The best way. I think, to have two dummies is to have one per side and have both kings make the same journey. An idea to make it all unique is the problem though. (2020-05-08)
A.Buchanan: Haha Henrik thank you. Well I'm in lockdown in Singapore, and it was 9-May already when I posted in Matplus. (2020-05-09)
A.Buchanan: Can claim that this is not Schnoebelen because the pawn wasn't promoted! Just remained as a pawn! But I'm sure the Schnoebelen theme was interpreted in a looser sense in 1860s. Although exponents in that era would have been baffled as to *why* the theme was termed "Schnoebelen", as Philippe was not yet born. (2020-05-09)
Henrik Juel: I am sorry to learn about the Singapore lockdown, but here the merriment has no bounds (apart from the notational dilemma: exf8 is not a promotion and still the PDB animation requires exf8=B) (2020-05-09)
Olaf Jenkner: If you consider each pawn move onto the 8th rank as a promotion then we have the Schnoebelen. (2020-05-09)
A.Buchanan: This is not "non-standard material", removing that keyword. (2022-01-26)
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Keywords: Unique Proof Game, Schnoebelen Theme (B), Phoenix (l), Prentos Theme (B), Ceriani-Frolkin Theme (B), Dummy Pawn, Golden Age (Dummy Pawn), Promotion (Bl)
Genre: Retro
Computer test: Jacobi v0.7.4 2020-05-08
FEN: rnb2qnr/1ppp1ppp/4kB2/8/8/2N5/P1PPP1PP/b2QKBNR
Input: A.Buchanan, 2020-05-08
Last update: A.Buchanan, 2023-08-04 more...
11 - P1379376
James Malcom
(30) MatPlus.net Forum 26/8/2020
P1379376
(13+13) C+
BP in 11.0
(-:
1. f4 b5 2. f5 b4 3. f6 b3 4. fxe7 bxc2 5. exf8=B cxb1=L 6. Da4 Ke7 7. Dh4+ Ke6 8. g4 Se7 9. Lg2 Txf8 10. Lb7 Sc6 11. Lxc8 Tb8
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Henrik Juel: What is the joke, James?
Natch 3.1 found no solution (2020-08-26)
James Malcom: The solution has now been added in, Henrik.

This PG has two purposes.
1) It is another exploration of what themes be realized with the dummy pawn involves.
2) It is also to push the boundaries of how long a dummy pawn PG can be made. (2020-08-27)
Henrik Juel: Thanks, James
Apparently you also extended the proof game; the one I tested was in 10.5
The solution shows the Schnoebelen theme, by the way (2020-08-27)
Henrik Juel: You forgot to remove wPf2 from the diagram position (2020-08-27)
James Malcom: Removed, and yes I did manage to find a way to extend it by a ply, in theme for its purpose. The version is also C+. (2020-08-27)
A.Buchanan: I think sLb1 is kind of anti-Belfort Any way to replace it with a Phoenix/Prenix knight? (2020-08-27)
Henrik Juel: Strictly speaking, this is not Belfort, which requires two units to stand away
As Andrew suggests, if sLb1 were a black knight, we would have Belfort (2020-08-27)
A.Buchanan: It's limiting to just talk about Belfort Theme - one historical tourney which had a fiddly constraint about the number of pieces exhibiting the property. Want really to talk more generally about Belfort *Effect*, which is a property of a single unit (2022-01-26)
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Keywords: Belfort (L), Dummy Pawn, Schnoebelen Theme, Golden Age (Dummy Pawn), Ceriani-Frolkin Theme (B), Prentos Theme (B), Unique Proof Game, Non-standard material (l)
Genre: Retro
Computer test: Jacobi v.0.7.5
FEN: 1rBq1r2/p1ppnppp/2n1k3/8/6PQ/8/PP1PP2P/RbB1K1NR
Input: James Malcom, 2020-08-26
Last update: A.Buchanan, 2023-08-04 more...
12 - P1381345
James Malcom
(36) MatPlus.net Forum 14/10/2020
P1381345
(13+11) C+
BP in 9.5
(-:
1. f4 h5 2. f5 h4 3. f6 h3 4. fxe7 hxg2 5. exf8=B gxh1=T 6. Lg2 Ke7 7. Lxb7 Ke6 8. Lxa8 Se7 9. Lb7 Txf8 10. Lxc8
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http://matplus.net/start.php?px=1603899391&app=forum&act=posts&tid=2475&fid=gen&page=1
James Malcom: The point of this PG was to make a true Belfort, after the lone bishop in P1379376 was pointed out to not be a true Belfort. (2020-10-28)
A.Buchanan: Belfort is not in the Encyclopedia! (2020-10-30)
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Keywords: Schnoebelen Theme (B), Dummy Pawn, Golden Age (Dummy Pawn), Belfort (Lt), Prenix (t), Prentos Theme (B), Ceriani-Frolkin Theme (B), Unique Proof Game
Genre: Retro
Computer test: Jacobi v.0.7.5
FEN: 1nBq1r2/p1ppnpp1/4k3/8/8/8/PPPPP2P/RNBQK1Nr
Input: James Malcom, 2020-10-28
Last update: A.Buchanan, 2023-08-04 more...
13 - P1384178
Bernd Graefrath
481 Julias Fairies 07/01/2014
P1384178
(15+14) C+
Beweispartie in 6,5 Zügen
Schlagschach
Immunschach
1. e4 e5 2. Ke2 d5 3. exd5 Le6 4. dxe6 a6 5. e7 Kd7 6. e8=K Kxe8 7. Ke1
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Something must occupy e2 on move W2 in order to protect the brave wPe as it advances.
- T is not near enough
- If this is D, then it would play 5. Dxe5 or 5. Dxa6
- If this is L, then is would play 5. Lxa6
- If this is Sg1, any promoted S on e8 is still immune because of Sb1
So by elimination, it must be Ke2
http://juliasfairies.com
Henrik Juel: Why does the animation not work?
The solution seems to be written correctly (2021-10-20)
A.Buchanan: I have changed the stipulation, and that seems to have fixed things (2021-10-21)
A.Buchanan: While this is ingenious, in the diagram position, Black is in the losing chess equivalent of check, implying that White's last move can only be Ke2-e1 or Se2-g1. This spoils the logic. Is it possible to find a 7th move for Black which escapes the check? (2021-10-21)
Henrik Juel: Thanks, Andrew
Surprising that changing Beweispartie to BP fixes the animation (2021-10-21)
A.Buchanan: And changing it back again to Beweispartie, it still works. Maybe there was an old version of the generated code which drives the animation based on the solution, and that needed to be refreshed? All very odd. (2021-10-21)
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Keywords: Homebase (w), Losing Chess, Switchback (Kk), Unique Proof Game, Immune Chess, Schnoebelen Theme (K), Ceriani-Frolkin Theme (K), Prentos Theme (K)
Genre: Retro, Fairies
Computer test: C+ Jacobi 0.7.5
FEN: rn1qkbnr/1pp2ppp/p7/4p3/8/8/PPPP1PPP/RNBQKBNR
Input: RJB, 2014-01-08
Last update: A.Buchanan, 2021-10-21 more...
14 - P1393307
James Malcom
1627 Julias Fairies 22/06/2021
P1393307
(13+14) C+
BP in 18.0 (-:
Dummy Pawn Promotion
1. a4 f5 2. Ta3 f4 3. Th3 f3 4. g3 fxe2 5. Lg2 exd1=B 6. Lc6 dxc6 7. Ke2 Lg4+ 8. Ke3 e6 9. Se2 Lb4 10. Txd1 Lc3 11. dxc3 Sf6 12. Td5 Tf8 13. Ta5 Tf7 14. Ta6 Td7 15. a5 Td1 16. Ld2 Tg1 17. Le1 Tg2 18. Sd2 Dd3+
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Henrik Juel: What is the (-: trick, James? (2021-08-30)
James Malcom: Nothing special; merely the usual. (2021-08-30)
Henrik Juel: Ah, the old dummy pawn...
Why not spell it out in the stipulation? Not everybody knows 'the usual', and I had forgotten all about it (2021-08-30)
James Malcom: Done! (2021-08-31)
comment
Keywords: Dummy Pawn, Move Length Record, Schnoebelen Theme, Golden Age (Dummy Pawn), Prentos Theme (B), Ceriani-Frolkin Theme (B), Unique Proof Game
Genre: Retro
Computer test: Jacobi v0.7.5 in 24 hours by Michael Caullaud
FEN: rn2k3/ppp3pp/R1p1pn2/P7/6b1/2PqK1PR/1PPNNPrP/4B3
Input: James Malcom, 2021-08-30
Last update: A.Buchanan, 2023-08-04 more...
15 - P1393313
Michel Caillaud
James Malcom

1639 Julias Fairies 07/30/2021
P1393313
(14+13) C+
BP in 11.0
Dummy Pawn Promotion & Royal Dynasty
1. d4 a5 2. d5 a4 3. d6 a3 4. dxe7 Ta4 5. exf8=B Dh4 6. g4 Ke7 7. g5 Ke6 8. g6 Se7 9. gxh7 Txf8 10. h8=K Tg4 11. f4 Dxh8
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2 “special” Schnoebelen promotions in a single line
Henrik Juel: Definition of the Royal Dynasty condition from Schwalbe
Königsdynastie: Im Diagramm kann jede Partei keinen, einen oder mehrere Könige haben. Ein König ist genau dann königlich, wenn er der einzige König seiner Partei ist. Eine Bauernumwandlung in einen König (derselben Partei) ist erlaubt. Ein König darf nur dann rochieren, wenn er königlich ist und nicht gezogen hat, seit er zuletzt königlich wurde. Die anderen für die Rochade vorgeschriebenen Bedingungen bestehen weiter.
In this problem 10.h8=K makes both white kings non-royal, so 11.f4 is not an illegal self-check
The black king is royal throughout, so 5.exf8=KDTLS? would have given a disturbing check to him, leaving just 5.e8=B
It is nice that both conditions are invisible in the diagram, but they should be mentioned in the stipulation, I think (2021-08-30)
Henrik Juel: Euclide 1.01 reports no solutions in orthodox chess (2021-08-30)
Henrik Juel: in my first comment you should read 5.exf8=B, of course, not 5.e8=B (2021-08-30)
James Malcom: I forget to add the C+, and thank you for your comments. (2021-08-31)
Henrik Juel: Jacobi 0.7.5 in Heuristic Mode found the solution in 35 seconds
A full test required 917 seconds (2021-08-31)
Henrik Juel: Here is a way to use Jacobi:
1. Open the homepage https://wismuth.com/jacobi/latest/solver.html
2. Copy the following two lines to the rectangle for Text representation:
stipulation dia11.0 forsyth 1sb2r1q/1pppspp1/4k3/8/5Pr1/p7/PPP1P2P/RSBQKBSR
condition RoyalDynasty PromOnly P S B R Q K
3. Click on 'Set problem from text'
4. Click on Start (with Heuristic Mode marked, if you just want to find the solution)
5. When Jacobi ends, click on the solution to view it in the Game editor
. (2021-08-31)
James Malcom: For those who advocate N for knight, use "EnglishN" to avoid changing the FEN each time. (2021-08-31)
Henrik Juel: That sounds good, James
Exactly how do you do that? Where do you write EnglishN?
There is an output option called English-N, is that it?
Is there a similar trick to use in Popeye? (2021-08-31)
Henrik Juel: This works in Jacobi, but note the s in promonly
englishn
stipulation dia11.0 forsyth 1nb2r1q/1pppnpp1/4k3/8/5Pr1/p7/PPP1P2P/RNBQKBNR
cond RoyalDynasty PromOnly P s B R Q K
And what about Popeye? (2021-08-31)
James Malcom: Popeye is S only as far as I know. (2021-08-31)
comment
Keywords: Dummy Pawn, Royal Dynasty, Promotion (BK), Schnoebelen Theme (BK), Unique Proof Game, Prentos Theme (BK), Ceriani-Frolkin Theme (BK), Golden Age (Dummy Pawn)
Genre: Retro, Fairies
Computer test: Jacobi v0.7.5
FEN: 1nb2r1q/1pppnpp1/4k3/8/5Pr1/p7/PPP1P2P/RNBQKBNR
Input: James Malcom, 2021-08-30
Last update: A.Buchanan, 2023-08-04 more...
16 - P1394899
Andrey Frolkin
Igor Vereshchagin

WCCC Rhodes 10/2021
2nd HM Champagne-TT A
P1394899
(14+11) C+
BP in 11.0
1. a4 g5 2. a5 g4 3. a6 g3 4. axb7 a5 5. b4 Ta6 6. b5 Tg6 7. b6 Sa6 8. b8=S gxh2 9. Sc6 Txg2 10. Sxe7 Sxe7 11. b7 Thg8 12. b8=S T8g7 13. Sc6 Sxc6 14. e4 Df6 15. e5 Df3 16. e6 f5 17. e7 Kf7 18. e8=T Lc5 19. Td8 Sxd8
play all play one stop play next play all
A.Buchanan: Can someone post the A-to-B 1st HM by Per Olin, please (2021-10-25)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 1 Sekunde.
Keine Lösung: BP 10.0, BP 10.5.
Notation: 1.f4 Sf6 2.f5 Sd5 3.f6 h5 4.fxe7 h4 5.exd8=T+ Ke7 6.b4 Ke6
7.b5 Le7 8.b6 Txd8 9.bxa7 b5 10.axb8=S Lb7 11.Sxd7 Txd7 (2023-05-09)
comment
Keywords: Unique Proof Game, Homebase (w), Champagne-TT (2021), Schnoebelen Theme (T)
Genre: Retro
FEN: r7/1bprbpp1/4k3/1p1n4/7p/8/P1PPP1PP/RNBQKBNR
Input: A.Buchanan, 2021-10-25
Last update: Silvio Baier, 2023-11-14 more...
17 - P1396101
Raúl Jordan
StrateGems 94, p. 55, 04-06/2021
Spezialpreis
Pál Benko Memorial Tourney 2020
Section Helpstalemates
PR Mike Prcic
P1396101
(2+13) C+
h=9
1. f1=S+ Kxg1 2. f2+ Kxg2 3. e1=S+ Kxf1 4. e2+ Kxf2 5. d1=S+ Kxe1 6. Ld2+ Kxe2 7. c1=S+ Kxd1 8. c2+ Kxd2 9. Ka2 Kxc1=
play all play one stop play next play all
Erstdarstellung eines 4-fachen Schnoebelen im Hilfspatt! Welchen "Vorgänger" hatte der Preisrichter im Auge, als er einen "Spezial"-Preis vergab??
more ...
comment
Keywords: Antiphönix, Ideal stalemate, konsekutive Umwandlungen 4 (ssss), Phoenix, Checking key, Schnoebelen Theme (4-fach), Promotions to Knights, under-promotion (s), under-promotion key, Minimal (B)
Computer test: Popeye 4.61
FEN: 8/8/8/8/8/1pp1pp2/1PppppbK/nkb3n1
Input: Gunter Jordan, 2021-11-22
Last update: Arnold Beine, 2022-11-09 more...
18 - P1399235
Michel Caillaud
Phénix 2001-2002
3 Pr Jubilé D.Innocenti-44 Phénix
P1399235
(12+11) cooked
BP in 57.5
Alphabetschach
1. a3 a5 2. Ta2 a4 3. Ta1 Ta5 4. Ta2 Tc5 5. Ta1 b5 6. Ta2 b4 7. Ta1 b3 8. Ta2 bxc2 9. Ta1 Sc6 10. Ta2 cxd1=S 11. Ta1 Txc1 12. Ta2 Tc5 13. Ta1 Th5 14. Ta2 Sb4 15. Ta1 Sd5 16. Ta2 c5 17. Ta1 c4 18. Ta2 c3 19. Ta1 c2 20. Ta2 c1=S 21. Ta1 Sb3 22. Ta2 Sd4 23. Ta1 La6 24. Ta2 Ld3 25. Ta1 S1e3 26. Ta2 Lf5 27. Ta1 Sf3+ 28. exf3 Sb4 29. Ta2 Sd3+ 30. Ke2 Se5 31. Ta1 d5 32. Ta2 d4 33. Ta1 d3+ 34. Kxe3 Dd6 35. Ta2 Dh6+ 36. Kd4 Sg6 37. Ta1 e5+ 38. Kd5 e4 39. Ta2 e3 40. Ta1 e2 41. Ta2 e1=S 42. Ta1 Sc2 43. Ta2 Se3+ 44. dxe3 d2 45. Ta1 d1=S 46. Ta2 Sc3+ 47. Sxc3 Ke7 48. Ta1 Kf6 49. Tc1 Lc2+ 50. Kc4 Lb3+ 51. Kd3 La2 52. b4 Lc4+ 53. Kc2 Lb5 54. Tb1 Le8 55. Tb3 axb3+ 56. Kc1 b2+ 57. Kd2 b1=S+ 58. Sxb1
play all play one stop play next play all
Reprint: http://chess.stephen29emmerson.fastmail.fm.user.fm/longalpha.html#
Cook: 1. a3 a5 2. Ta2 a4 3. Ta1 Ta5 4. Ta2 Th5 5. Ta1 b5 6. Ta2 b4 7. Ta1 b3 8. Ta2 bxc2 9. Ta1 Sc6 10. Ta2 cxd1=T+ 11. Kxd1 Sa7 12. Ta1 Sb5 13. Ta2 Sd6 14. Ta1 c5 15. Ta2 c4 16. Ta1 c3 17. Ta2 c2+ 18. Kxc2 Lb7 19. Ta1 Ld5 20. Ta2 Lb3+ 21. Kd3 Lc2+ 22. Kd4 Lf5 23. Ta1 Sb5+ 24. Ke5 Sd4 25. Ta2 Sf3+ 26. exf3 d5 27. Ta1 d4 28. Ta2 d3 29. Ta1 Db8+ 30. Kd5 Db3+ 31. Kc6 Dc2+ 32. Sc3 Db3 33. Tb1 Db6+ 34. Kd5 Dh6 35. Ta1 e5 36. Tb1 e4 37. Ta1 e3 38. Tb1 e2 39. Ta1 e1=S 40. Tb1 Sc2 41. Ta1 Se3+ 42. dxe3 d2 43. Tb1 dxc1=S 44. Ta1 Sd3 45. Tb1 Se5 46. Ta1 Sg6 47. Ta2 Ke7 48. Ta1 Kf6 49. Tc1 Lc2+ 50. Kc4 Lb3+ 51. Kd3 La2 52. b4 Lc4+ 53. Kc2 Lb5 54. Tb1 Le8 55. Tb3 axb3+ 56. Kc1 b2+ 57. Kd2 b1=S+ 58. Sxb1
Michel Caillaud: cook :
4…Th5 5.Ta1 b5 6.Ta2 b4 7.Ta1 b3 8.Ta2 bxc2 9.Ta1 Sc6 10.Ta2 cxd1=T+ 11.Kxd1 Sa7 12.Ta1 Sb5 13.Ta2 Sd6 14.Ta1 c5 15.Ta2 c4 16.Ta1 c3 17.Ta2 c2+ 18.Kxc2 Lb7 19.Ta1 Ld5 20.Ta2 Lb3+ 21.Kd3 Lc2+ 22.Kd4 Lf5 23.Ta1 Sb5+ 24.Ke5 Sd4 25.Ta2 Sf3+ 26.exf3 d5 27.Ta1 d4 28.Ta2 d3 29.Ta1 Db8+ 30.Kd5 Db3+ 31.Kc6 Dc2+ 32.Sc3 Db3 33.Tb1 Db6+ 34.Kd5 Dh6 35.Ta1 e5 36.Tb1 e4 37.Ta1 e3 38.Tb1 e2 39.Ta1 e1=S 40.Tb1 Sc2 41.Ta1 Se3+ 42.dxe3 d2 43.Tb1 dxc1=S 44.Ta1 Sd3 45.Tb1 Se5 46.Ta1 Sg6 47.Ta2… (2022-02-20)
James Malcom: I hope you may find a correction or an acceptable version, Caillaud. Thanks for taking the time to double-check your own work. (2022-02-21)
comment
Keywords: Alphabetic Chess, Promotion (sssss x5), Ceriani-Frolkin Theme (sssss x5), Schnoebelen Theme (Sb1)
Genre: Fairies, Retro
FEN: 4bbnr/5ppp/5knq/7r/1P6/P3PP2/3K1PPP/1N3BNR
Reprints: chess.stephen29emmerson
Input: James Malcom, 2022-02-19
Last update: A.Buchanan, 2023-06-03 more...
19 - P1399880
Anirudh Daga
9191 Phénix 325 12/2021
P1399880
(14+11)
BP in 11.5
1. d4 e5 2. dxe5 Df6 3. exf6 d5 4. fxg7 f5 5. gxh8=T Kf7 6. Dxd5+ Kg7 7. Lh6+ Kxh8 8. e3 f4 9. Lb5 f3 10. Se2 fxe2 11. Kd2 e1=T 12. Kd3
play all play one stop play next play all
Henrik Juel: C++ Euclide 1.01 (2022-03-20)
more ...
comment
Keywords: Excelsior black, Excelsior white, konsekutive Umwandlungen 2 (Tt), Phoenix, Schnoebelen Theme (T), Promotions to rooks, under-promotion (Tt)
Genre: Retro
Computer test: Natch 3.3
FEN: rnb2bnk/ppp4p/7B/1B1Q4/8/3KP3/PPP2PPP/RN2r2R
Input: Gunter Jordan, 2022-03-19
Last update: A.Buchanan, 2022-03-20 more...
20 - P1401191
Norbert Geissler
Raúl Jordan

2241 Gaudium 250 31/10/2021
1. Preis
Abt. h#2,5-3,5
PR Manfred Rittirsch
P1401191
(5+13) C+
h#4
0.2.1...
1) 1. ... Se1+ 2. fxe1=L Kc2 3. Kf2 Kc2-d1 4. Dg2 Lxe1#,
2) 1. ... Le1 2. fxe1=S Kd2 3. Tf2+ Kd2-d1 4. Kf3 Sxe1#
play all play one stop play next play all
Schlüssel- und Mattzüge auf das gleiche Feld.
A.Buchanan: Hi Gunter thanks for your scholarship. The specified syntax for PDB is to separate phases by commas. If something only occurs in 1 phase I guess it would be e.g. "L,". It is not a good idea to have multiple occurrences of the same keyword within a problem, because that makes counting & quality-checking more difficult, and is fiendishly difficult to track. Thanks for your understanding. If you have different opinions, please express them here, in German or English. (2022-08-01)
Yuri Bilokin: more economical c1=a1, then bPc7(-bNc7) 8/2p5/3b4/p1Rpp3/p3n3/K1Prq3/NB1pk3/3br3 h#4 0.2.1…
1...Sc1+ 2.dxc1=B Ka2 3.Kd2 Kb1 4.Qe2 Bxc1# (MM)
1...Bc1 2.dxc1=S Kb2 3.Rd2+ Kb1 4.Kd3 Sxc1# (MM) (2022-08-03)
Mario Richter: Hi Andrew, can you please give an example in what sense "multiple occurrences of the same keyword within a problem" do make "counting & quality-checking more difficult", and what you mean with "is fiendishly difficult to track"! (2022-08-04)
Gunter Jordan: Lieber Yuri, wie mir die Autoren mitteilten, kannten sie die von dir angegebene Stellung (und noch weitere Versionen), doch entschieden sie sich bewusst für ihre Diagrammposition, weil darin Weiß nicht nur drei Anfangszüge hat, wovon sogar zwei lösen, sondern eine größere Auswahl in einer viel freieren Stellung. (2023-01-15)
Gunter Jordan: ... entschuldigung, verzählt. Es sind 4 Anfangszüge bei Yuri. (2023-01-15)
comment
Keywords: Exchange of roles (L-S), Koshakin Theme, Model mate, Reciprocal moves by White, Schnoebelen Theme (l,s), under-promotion (l,s), Zilahi, x pieces move to one square, x pieces capture on one square, Square vacation, Checking key (1)
Genre: h#
Computer test: Popeye Windows-64Bit v4.85 (4096 KB)
FEN: 8/4n3/5b2/2p1Rpp1/2p3n1/2K1Prq1/2NB1pk1/5br1
Reprints: E1 The Problemist , p. 164, 07/2023
Input: Gunter Jordan, 2022-05-08
Last update: Gunter Jordan, 2023-11-27 more...
21 - P1407283
Sergii I. Tkachenko
Andrey Frolkin
Leonid Lyubashevsky

H1530 Problemist Ukrainy 75 01-03/2023
P1407283
(8+10) C+
h#4
1. d1=T Kc3 2. b1=S+! Kc2 3. Lc3 Kxd1 4. Kd3 Lxb1#
play all play one stop play next play all
Yuri Bilokin: you can see 1...Kc3 2.b1=S+ Kc2 3.Bc3 Kd1 4.Kd3 Bxb1# (2023-01-16)
comment
Keywords: Discovered check, Antiphönix, Remote selfblock, konsekutive Umwandlungen 2 (ts), Schnoebelen Theme (ts), under-promotion (ts), under-promotion key
Genre: h#
FEN: 8/3p4/1p1P4/1P6/1PK1k3/1P2P3/Bp1p1Pp1/b4nrb
Input: Gunter Jordan, 2023-01-15
Last update: Gunter Jordan, 2023-01-15 more...
22 - P1414321
Rolf Wiehagen
1858 Springaren 167 0972023
nach D. Elekes & G. Schweig
P1414321
(3+5) C+
h#4
0.1.1...
1. ... f8=S (f8=~?) 2. De6 fxe6 3. Kh8 e7 4. Lxf8 exf8=D#
play all play one stop play next play all
Veröffentlicht in der Rubrik "Samasaker och hugskott".
Vergleiche P0552543. (Autor)
Yuri Bilokin: you can see 1.Qb1+ Kxb1 2.Bc1 Ka1 3.Kh8 f8=Q#
1.Qb1+ Kxb1 2.Bc1 Kxc1 3.Kh8 f8=Q#
1.Qb1+ Kxb1 2.Bc1 Ka2 3.Kh8 f8=Q#
1.Qb1+ Kxb1 2.Bc1 Kc2 3.Kh8 f8=Q# (2024-01-13)
comment
Keywords: Corner mate, Model mate, Phoenix (DS), Schnoebelen Theme (S), Promotion (D), Promotion in the mating move, under-promotion (S), under-promotion key
Genre: h#
FEN: 8/5Pkp/5p1b/5P2/8/1q6/8/K7
Input: Gunter Jordan, 2024-01-02
Last update: Gunter Jordan, 2024-01-02 more...
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