Die Schwalbe

7 problem(s) found in 3594 milliseconds (displaying 7 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND K='Pickaninny']

1 - P1000901
Tomislav Petrovic
3 feenschach 137, p. 340, 08-09/2000
Zdravko Maslar gewidmet
P1000901
(14+8) C+
s#2
1. dxc6ep!
1. ... dxc6+ 2. Lxc6 Sc7#
1. ... d6 2. d5 Sc7#
1. ... d5 2. exd5 Sc7#
1. ... dxe6 2. e5 Sc7#
1. ... gxf6 2. Sf5 Sc7#
1. ... g6 2. Lxg6 Sc7#
1. ... g5 2. Sg4 Sc7#
1. ... gxh6 2. Lh5 Sc7#
play all play one stop play next play all
James Malcom: This is a most excellent problem! En passant as the key and a double pickaninny in a short s#2 is surely no easy feat, I'd say. Now, question: Why can't dxc5 be Black's last move? The illegal retraction od b6-b7 is already quite obvious. (2020-10-24)
A.Buchanan: R: 1. cxb6/dxc5? both imply 3 pawn captures by Bl (2020-10-24)
A.Buchanan: I agree this is a beautifully integrated composition (2020-10-24)
more ...
comment
Keywords: En passant, Pickaninny (2x), En passant as key, grab
Genre: Retro, s#
Computer test: C+ Popeye 4.61 after retro-analysis shows that last move was c7-c5
FEN: n2RB3/k2p2pR/Pp2PP1N/bKpP4/PpNPP3/1P6/8/8
Input: Gerd Wilts, 2000-10-08
Last update: A.Buchanan, 2020-10-25 more...
2 - P1128457
Michel Meynsbrughen
?
P1128457
(5+2)
#2
1. Da7+? Kd8 2. Dc7#,2. La5#
1. ... Ke6!

1. De6+? Kd8 2. Dc8#,La5#
1. ... Kxe6!

1. Dh3+?
1. ... Kd8 2. Dc8#,La5#
1. ... e6!

1. Lf6! droht 2. Dxe7#
1. ... e5 2. Dh3#
1. ... e6 2. Da7#
1. ... exf6 2. De8#
play all play one stop play next play all
SCHRECKE: Vorgänger: P1176155 (2020-11-24)
comment
Keywords: Miniature Collection (0010268), Pickaninny
Genre: 2#
FEN: 1K6/3kp3/R2N4/8/8/2B1Q3/8/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2019-01-13 more...
3 - P1145489
Ernst Siemon
169 Die Schwalbe , p. 123, 01/1941
21. Thematurnier (aus 'Der junge Aufgabenfreund')
P1145489
(5+2)
#2
1. Kd7
play all play one stop play next play all
G9-2
vf: Der junge Aufgabenfreund (25), 01.1941
Felber, Volker: Gespiegelter Nachläufer unter P1154225 (2012-01-24)
SCHRECKE: C+, popeye 4.85
1.Kd7! (2.D:g7#)
1. ... g5 2.Dh5#
1. ... g6 2.De6#
1. ... g:h6 2.Dg8#
1. ... g:f6 2.Dg7# (2020-11-19)
comment
Keywords: Miniature Collection (0310125), Pickaninny
Genre: 2#
FEN: 3K4/5kp1/5N1B/3N4/6Q1/8/8/8
Input: Felber, Volker, 2010-09-11
Last update: James Malcom, 2020-11-19 more...
4 - P1226153
Erich Ernst
3214 Badische Neueste Nachrichten 11/06/1994
P1226153
(10+5) cooked
#3
1. Lxe6! (2. c8=S+ 3. Le7#)
1. Lxe6! fxe6 2. c8=T
1. Lxe6! fxg6 2. c8=L
1. Lxe6! f5 2. c8=S+
1. Lxe6! f6 2. c8=D
play all play one stop play next play all
Rosalie Fay: 1 ... f5 doesn't parry the threat. 1 ... fxg6 2 c8=B/Sf8 both work, so this line is dualistic. So no Pickaninny and no AUW. (2020-09-26)
A.Buchanan: I've been meaning to ask about threats, and here's a good chance. They are a cool shorthand for many solutions, and some folks have invented themes about them. But (as here) they destroy the logic of many problems where Black has a limited choice of moves, so we shouldn't apply them robotically, imho.
One obvious case is that in a problem where *every* Black move counters the threat, the threat is meaningless. Another obvious case is if it only counters one Black move, then it's kind of lame and again meaningless as shorthand. So unless there is an artificial theme declared with the solution, a threat should not be given unless it works against at least two Black moves.
Here every Black play except for 1... f5 defeats the "threat". Even 1... Kc5 which leads to the short solution 2. Le7# also refutes 2. c8=S. There *is* a theme AUW/Pickaninny, but the symmetric expression of this threatless theme is actually damaged by including a threat in the solution. (2020-09-27)
A.Buchanan: According to the Codex, a directmate or selfmate is unsound if it is cooked [i.e. has a solution that differs in its first move from the author’s solution] or has a short solution or no solution. The gravity of defects such as unintended duals, or unintended multiple refutations of [intended] tries is a matter for a tourney judge.
One issue with PDB is that we do not have a "sound/unsound" field, nor even a keyword for this! But even a brutally dualized problem can never be classified as cooked, and this one is only mildly dualized. (2020-09-27)
A.Buchanan: I am not trying to be "kind to duals" here. They are defects, and I applaud Henrik's analysis of them. Since we are not running a tourney, could we imagine some formula based on the graph structure of the solution which will automatically give us a figure. E.g. dual-less = 0, any dual in 2nd move is twice as bad as a dual in 3rd move, etc? The length & breadth of the problem would has to be a factor. Can we construct an ideal solution, suppressing all duals, and come up with a comparison of that? E.g. sum(i=2..n) (d_i - s_i)/(2^i), where d_i & s_i are the number of dual moves & solution moves respectively occurring at the ith White move. (2020-09-27)
A.Buchanan: I agree with Rosie that 1 ... fxg6 2 c8=B/Sf8 is fatal to the intended AUW. Replacing wSh7 with sBf8 or wBg7g8 does restore AUW, but with an obvious cost. [Legality does not affect soundness, according to the Codex.] As discussed earlier, I think the problem is still Pickaninny as the threat is meaningless. (2020-09-27)
comment
Keywords: Allumwandlung, Pickaninny
Genre: 3#
FEN: N1B5/2P2p1N/3kp1R1/1P2p1B1/2P1p3/4P1K1/8/8
Input: Felber, Volker, 2011-12-02
Last update: James Malcom, 2020-09-26 more...
5 - P1252301
G. Karlsson
Our Folder 08/1924
P1252301
(11+4) cooked
#3
1.b7 e5/e\x f6/e\x d6/e6
2.b8=D[S]/T/L/S
play all play one stop play next play all
Erich Bartel: Nachdruck:
1) Themes-64 (2) IV 1956 (2012-10-27)
Rosalie Fay: 1 ... e5 doesn't parry White's key's threats, and 1 ... e6 2 Sb6+/b8=S+ both work, so no Pickaninny.

No Black move uniquely forces 2 b8=S, so no AUW. (2020-09-26)
comment
Keywords: Allumwandlung, Pickaninny
Genre: 3#
FEN: B5Kb/P2kp1nR/1P1N1BR1/3N1P2/3P4/8/8/8
Input: Erich Bartel, 2012-10-27
Last update: James Malcom, 2020-09-27 more...
6 - P1286792
Ernests Gize
144/29 Deutsche Zeitung im Ostland 27/12/1943
1.Preis
P1286792
(13+11)
#3
1. Dc8!
1. ... d5 2. d4+ Kd6 3. Dd7#, Dd8#
1. ... d6 2. d3 d5 3. Se4#
1. ... dxc6 2. dxc3 bxc3 3. Lxc3#
1. ... dxe6 2. dxe3 bxa5 3. Dxe6#
play all play one stop play next play all
Einsendung zum "Karl-Behtinsch-Gedächtnis-Problemturnier"
PR A.Keirans: "Vier Schritte eines schwarzen und weißen Bauern (Picaninny) in vier Varianten! Im Dreizüger ist diese Idee bereits dargestellt worden, doch sind die unmittelbar symmetrischen Bauernschritte als Echospiel im Problem von Giese eine eigenartige Neuerung, die außerordentlich schwer zu konstruieren ist."
Henrik Juel: Slightly damaged by mate duals, but the beautiful theme is OK:
4 defenses by a black pawn are met by 'the same' move by a white pawn (2020-09-14)
James Malcom: As far as I know, this is the only problem with an Albino echo directly after a Pickaninny on the second move, and not the third as mate. I found this idea on the Frances Eches forum a few days back-https://www.france-echecs.com/article.php?art=20050924201056675. (2020-09-14)
A.Buchanan: Very nice - what year please? (2020-09-15)
James Malcom: I'm unsure of the date, but a look at YACPDB revealed a modern day Pickaninny-Albino echo just like this one-ttps://www.yacpdb.org/#344495 (2020-09-15)
Frank Richter: Jahreszahl inkorrekt - 193 ? (2020-09-16)
Mario Richter: Ja, da hat meine Tastatur geklemmt und eine Ziffer verschluckt. (Kleiner Tip: Wenn es wichtig gewesen wäre, das genaue Datum zu kennen: Ich gebe meist einen kompletten Jahrgang einer Schachpalte auf einmal ein, es hätte sich also eine Abfrage wie "CREATIONUSER='Richter' AND S='Deutsche Zeitung im Ostland' gelohnt, um anhand der "Nachbarprobleme" das Publkikationsdatum zu bestimmen.)

Btw., my typo has made it into the YACPDB too (https://www.yacpdb.org/#381507), so some kind Soul with edit rights should change the date there too ... (2020-09-20)
James Malcom: Mario, I have edited the YACPDB info, so now it is fixed. The solution is also playable now as well. (2020-09-20)
comment
Keywords: Pickaninny, Albino, Echo (Pickaninny-Albino)
Genre: 3#
FEN: n4b2/2pppPp1/QpP1N1K1/PP2k1NR/1p6/2n1p3/1BPP4/3R4
Input: Mario Richter, 2014-08-05
Last update: Mario Richter, 2020-09-20 more...
7 - P1287382
Martin Minski
3144v Freie Presse (Chemnitz) 09/11/1990
P1287382
(11+7)
#3
1. f7!
1. ... dxc6 2. fxe8=T Kd7 3. Txd8#
1. ... d6 2. fxe8=D d5,dxc5 3. Dxd8#,Dd7#
1. ... d5 2. fxe8=L Lc7,L~ 3. Ld7#
1. ... dxe6 2. fxe8=S Lc7,L~ 3. Lxe6#
1. ... Tf8 2. gxf8=D d6,d~3. Dxd8#
1. ... Tg8 2. fxg8=D d6,d~ 3. Dxd8#
1. ... Th8 2. gxh8=D d6,d~ 3. Dxd8#
play all play one stop play next play all
Korrekturfassung vom 11.01.1991 zu P1234674
Henrik Juel: Impressive problem by the recent study GM, but slightly damaged by the mate dual after 1... d6 (2020-11-17)
James Malcom: Even so, a Pickaninny+AUW with the Black king on the last rank is still further impressive! (2020-11-17)
comment
Keywords: Pickaninny, Allumwandlung
Genre: 3#
FEN: Rnkbr3/1N1pp1P1/P1P1NP2/2P4p/3P3K/8/B7/8
Input: Felber, Volker, 2014-08-26
Last update: James Malcom, 2020-11-16 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (1)
Felber, Volker (4)
Erich Bartel (1)
Mario Richter (1)