31 problem(s) found in 2655 milliseconds (displaying 31 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT A='Keym, Werner' AND K='Hilfsrückzüger'] [download as LaTeX]
R: 1. b2xBc3 b4xc3ep, dann bxa6 b3=
Cook: R: 1. b2xDc3 Da3xSc3, dann 1. bxa6 bxa3=
Cook: R: 1. b2xDc3 Da3xSc3, dann 1. bxa6 bxa3=
Keywords: En passant in the retro play, Help retractor, Kindergarten Problem, Minimal, Miniature, Ideal stalemate, Superseded by (P1360139)
Genre: Retro, Fairies
Computer test: cooked by Deadpos v2.3 14-Jan-2024
FEN: 8/1pK5/P7/k7/8/2P5/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-18 more...
Genre: Retro, Fairies
Computer test: cooked by Deadpos v2.3 14-Jan-2024
FEN: 8/1pK5/P7/k7/8/2P5/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-18 more...
2 - P0000084
Rudolf Queck
6013 Die Schwalbe 107 10/1987
(4+4) cooked
-1(w+s), dann h#1
2 Lösungen
Circe
(R: ws, V: sw)
Rudolf Queck
6013 Die Schwalbe 107 10/1987
(4+4) cooked
-1(w+s), dann h#1
2 Lösungen
Circe
(R: ws, V: sw)
R: 1. Lh6xTf8[+sTh8] Tf7-f8, dann 1. g5 Lxg5[+sBg7]#
R: 1. e7xTf8=L[+sTh8] Tf7-f8, dann 1. g5 e8=S#
R: 1. e7xTf8=L[+sTh8] Tf7-f8, dann 1. g5 e8=S#
Anton Baumann: NL: R: 1.Ke8-d8 g7-g6 V: 1.Th1..6 Le7#
Korrektur in 'Die Schwalbe' 06/1989 S.78: +sBh7 (2022-12-30)
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Korrektur in 'Die Schwalbe' 06/1989 S.78: +sBh7 (2022-12-30)
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Keywords: Circe, Help retractor, Promotion in forward play
Genre: Retro, Fairies
FEN: 3K1B1r/8/5kp1/4nP2/4P3/8/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2018-12-06 more...
Genre: Retro, Fairies
FEN: 3K1B1r/8/5kp1/4nP2/4P3/8/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2018-12-06 more...
R: 1. ... Kg8xBf7,(If5-e4) Kb4xSb3,(If6-f5), dann 1. Ka4,(Ie6) Sc5#,(If8)
Cook: NL
R: 1. Ke7xLf7,xSf7,xBf7,(Id4-e4) d6xDe5,(Ic5-d4), dann 1. Kc2,(Id4) Db2#,(Ia1)
R: 1. Kg6xTf7,Ke6xTf7,(If3-e4,Id3-e4) d6xDe5,(Ie4,Ic4), dann 1. Te7,Tg7,(Id4) Db2#,(Ia1)
Cook: NL
R: 1. Ke7xLf7,xSf7,xBf7,(Id4-e4) d6xDe5,(Ic5-d4), dann 1. Kc2,(Id4) Db2#,(Ia1)
R: 1. Kg6xTf7,Ke6xTf7,(If3-e4,Id3-e4) d6xDe5,(Ie4,Ic4), dann 1. Te7,Tg7,(Id4) Db2#,(Ia1)
Anton Baumann: 'Die Schwalbe' 08/1984 S.308: der Autor korrigiert: wBe5 statt sBe5 (2022-12-23)
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Keywords: Help retractor, Kindergarten Problem
Pieces: = Imitator (I)
Genre: Retro, Fairies, h#
FEN: 8/5K2/8/4p3/4-I3/1k6/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2021-12-13 more...
Pieces: = Imitator (I)
Genre: Retro, Fairies, h#
FEN: 8/5K2/8/4p3/4-I3/1k6/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2021-12-13 more...
4 - P0000772
Klaus Wenda
1419 Die Schwalbe 30 12/1974
4. ehrende Erwähnung
(4+7)
Weiß nimmt 1 Zug zurück, dann #2
b) sBh7 nach b6
Klaus Wenda
1419 Die Schwalbe 30 12/1974
4. ehrende Erwähnung
(4+7)
Weiß nimmt 1 Zug zurück, dann #2
b) sBh7 nach b6
a) R: 1. Kd5-e4, dann 1. Kd6
b) R: 1. dxc6ep, dann 1. d6
In a) ist die s0-0-0 nicht mehr möglich, weil sich das Schach durch den sLg8 nur durch Kf7(x)e8 erklären läßt, in b) muß mindestens einer der sTT via e8 auf seinen Diagrammplatz gelangt sein.
b) R: 1. dxc6ep, dann 1. d6
In a) ist die s0-0-0 nicht mehr möglich, weil sich das Schach durch den sLg8 nur durch Kf7(x)e8 erklären läßt, in b) muß mindestens einer der sTT via e8 auf seinen Diagrammplatz gelangt sein.
In a) Entschlagdual R: Kd5xBe4, das wurde in der Lösungsbesprechung noch kritisiert und als NL vermerkt. Hat das der PR gelassener gesehen ('geduldeter Entschlagdual'), oder gibt's noch eine korrigierte Version dieses Problems?
Anton Baumann: Korrektur in 'Die Schwalbe' 12/1975 S.422: +sLh2, +sBe5;
nun geht in a) nur noch zurück: Kd5 x Be4.
Ausgezeichnet wurde gem. Preisbericht in 'Die Schwalbe' 06/1977 S.82 die korrigierte Version 1419v. (2022-12-08)
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Anton Baumann: Korrektur in 'Die Schwalbe' 12/1975 S.422: +sLh2, +sBe5;
nun geht in a) nur noch zurück: Kd5 x Be4.
Ausgezeichnet wurde gem. Preisbericht in 'Die Schwalbe' 06/1977 S.82 die korrigierte Version 1419v. (2022-12-08)
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Keywords: Castling (sg), Help retractor, En passant in the retro play, Cant Castler (sl)
Genre: Retro
FEN: r3k1bR/pr1p3p/2P5/8/2B1K3/8/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-02-10 more...
Genre: Retro
FEN: r3k1bR/pr1p3p/2P5/8/2B1K3/8/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-02-10 more...
5 - P0002484
Aegidius Samuel van Ommeren
4733 Tijdschrift van den NSB 01/1927
(1+2) C+
-1(w+s), dann h#1
Aegidius Samuel van Ommeren
4733 Tijdschrift van den NSB 01/1927
(1+2) C+
-1(w+s), dann h#1
R: 1. Kc6xLc7 Te3xDb3, dann 1. Lf4 Dd5#
Adrian Storisteanu: See twin P1216951. Another possible twin (see Thomas Brand's Retroblog 11/2019):
wKc7->.h5
- 1.Kg4xRh5 Re3xQb3 & 1.Re5 Qc4# (2024-03-19)
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wKc7->.h5
- 1.Kg4xRh5 Re3xQb3 & 1.Re5 Qc4# (2024-03-19)
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Keywords: Help retractor
Genre: Retro
Computer test: Popeye Windows-32Bit v4.55 (312 MB) & Rawbats
FEN: 8/2K5/8/8/4k3/1r6/8/8
Reprints: 8458 FEENSCHACH 11/1967
Problemkiste 92 04/1994
Input: Gerd Wilts, 1995-06-03
Last update: Frank Müller, 2011-11-07 more...
Genre: Retro
Computer test: Popeye Windows-32Bit v4.55 (312 MB) & Rawbats
FEN: 8/2K5/8/8/4k3/1r6/8/8
Reprints: 8458 FEENSCHACH 11/1967
Problemkiste 92 04/1994
Input: Gerd Wilts, 1995-06-03
Last update: Frank Müller, 2011-11-07 more...
R: 1. Se4xLd2 Kh7xTg8, dann Lh6 Sf6#
Adrian Storisteanu: Possible twin:
b)wSd2->d6
- 1.Sf7xRd6 Rd8xQd6 & 1.Rd8-f8 Qd6-g6# (2024-03-19)
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b)wSd2->d6
- 1.Sf7xRd6 Rd8xQd6 & 1.Rd8-f8 Qd6-g6# (2024-03-19)
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Keywords: Help retractor
Genre: Retro
FEN: 6k1/8/8/8/8/8/3N4/8
Reprints: Problemkiste 92 04/1994
Input: Gerd Wilts, 1995-06-03
Last update: Alfred Pfeiffer, 2014-06-03 more...
Genre: Retro
FEN: 6k1/8/8/8/8/8/3N4/8
Reprints: Problemkiste 92 04/1994
Input: Gerd Wilts, 1995-06-03
Last update: Alfred Pfeiffer, 2014-06-03 more...
R: 1. c7xTb8=L Tb7-b8, dann Ta7 c8=D#
Henrik Juel: Cook: -1.a7xFb8=L Kb7xTa8, 1.Ka6 axb8DT#. (2004-04-01)
Mario Richter: vgl. mit P0006207 (2009-12-24)
Adrian Storisteanu: Possible (expensive, 50% more units) fix: Ka8 Bd8 / Kc8 (2+1) -- R: 1.e7xRd8=B Rd7-d8 & 1.Rc7 e8Q#. On the plus side, there is a wK in the picture now. (2016-02-10)
Adrian Storisteanu: See P1389595 (not clear which was first). (2024-03-19)
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Mario Richter: vgl. mit P0006207 (2009-12-24)
Adrian Storisteanu: Possible (expensive, 50% more units) fix: Ka8 Bd8 / Kc8 (2+1) -- R: 1.e7xRd8=B Rd7-d8 & 1.Rc7 e8Q#. On the plus side, there is a wK in the picture now. (2016-02-10)
Adrian Storisteanu: See P1389595 (not clear which was first). (2024-03-19)
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Keywords: Help retractor, Promotion (L)
Genre: Retro
FEN: kB6/8/8/8/8/8/8/8
Reprints: Problemkiste 92 04/1994
Input: Gerd Wilts, 1995-06-03
Last update: Alfred Pfeiffer, 2014-06-03 more...
Genre: Retro
FEN: kB6/8/8/8/8/8/8/8
Reprints: Problemkiste 92 04/1994
Input: Gerd Wilts, 1995-06-03
Last update: Alfred Pfeiffer, 2014-06-03 more...
R: 1. Kh2-g1 Kg4xDf3, dann 1. Kh4 Df5=
R: 1. Kf1-g1 Kg3xDf3, dann 1. Kh2 Kf2=
"set play" ( -s, dann h=1 )
R: 1. Ke2xDf3, dann 1. Ke1 Dd3=
R: 1. Kf1-g1 Kg3xDf3, dann 1. Kh2 Kf2=
"set play" ( -s, dann h=1 )
R: 1. Ke2xDf3, dann 1. Ke1 Dd3=
Duplicate Diagram: P1187070
Adrian Storisteanu: Is the star "*" in the stipulation supposed to indicate a kind of "set play" in the retro part -- in effect a "-1s dann h=1"? Because there is one:
- 1.Ke2xQf3 & 1.Ke2-e1 Qf3-d3=. (2015-08-02)
A.Buchanan: That's a clever interpretation Adrian, I am sure you are right, and it's sound according to Deadpos (2024-01-13)
Adrian Storisteanu: A more precise stipulation would be something like: (-w -s)*, dann h=1 (2024-01-14)
A.Buchanan: Good idea. The convention is that * promises at least one set play instance. (2024-01-15)
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- 1.Ke2xQf3 & 1.Ke2-e1 Qf3-d3=. (2015-08-02)
A.Buchanan: That's a clever interpretation Adrian, I am sure you are right, and it's sound according to Deadpos (2024-01-13)
Adrian Storisteanu: A more precise stipulation would be something like: (-w -s)*, dann h=1 (2024-01-14)
A.Buchanan: Good idea. The convention is that * promises at least one set play instance. (2024-01-15)
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Keywords: Help retractor, only Kings, Aristocrat, Miniature
Genre: Retro, Fairies
Computer test: C+ Deadpos v2.3 14-Jan-2024
FEN: 8/8/8/8/8/5k2/8/6K1
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-18 more...
Genre: Retro, Fairies
Computer test: C+ Deadpos v2.3 14-Jan-2024
FEN: 8/8/8/8/8/5k2/8/6K1
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-18 more...
9 - P0004325
Charles Edward Kemp
London Evening News 1943
(7+9) cooked
Schwarz nimmt 1 Zug zurück, dann h#1
Charles Edward Kemp
London Evening News 1943
(7+9) cooked
Schwarz nimmt 1 Zug zurück, dann h#1
R: 1. g5xSf4, dann 1. Le5 Sd5#
Cook: R: 1. e7xSd6, dann 1. Le5 Se4#
Cook: R: 1. e7xSd6, dann 1. Le5 Se4#
Henrik Juel: Diagram error? -1... g5xSf4, 0... Le5 1.Sd5#. But the symmetrical solution -1... e7xSd6 etc. seems legal too. (2004-03-22)
A.Buchanan: Yes bBf8 would have died at home but bPc could capture twice to promote on c1 or e1 (2023-03-31)
A.Buchanan: Odd. The diagram is thematically symmetric, so not just missing a unit. WinChloe has the same diagram. I wondering if we are missing something from the stipulation. Does anyone have access to an archive for this? It's also odd that it was reprinted: surely there would be a comment there? I suppose it can be rendered sound by placing wTTSS somewhere symmetric. Then Black runs out of pawn captures if sLd4 is promoted. In any case, wPh7xg8=S is affordable. (2023-04-01)
Mario Richter: The reprint in 'Problem' says: "Ne e7xSd6 radi nepravilne postave" ("Not e7xSd6 because of illegal Position.") The diagram in 'Problem' is the same as here in the PDB.
How about adding black pawns on b7 and g2? (2023-04-01)
A.Buchanan: Hi Mario. I considered adding sBb5e2. That gives 10 needed captures by Black and 6 by White, including sLf8. So the try fails for *two* reasons. sBb7g2 fails even more badly. I thought that also adding wTTSS although more uneconomical in pieces defeats the try for only one reason. Also I liked the trick h7xg8=S. And it must make it harder to find the solution. Does Rawbats do simple retractors? Can you try wTa0h1 wSa7g1 as a risky initial bid, and then back off until there are no cooks? (2023-04-01)
Mario Richter: Hi Andrew, I was well aware that with adding sBb5e2 or sBb7g2 the try fails for two reasons (for [subjective] optical reasons I preferred sBb7g2 to sBb5e2]). The reason I suggested the addition of 2 black pawns was the following consideration: I cannot believe that such an experienced Retro Composer like C.E. Kemp could make such a big mistake. It's much more likely that the printer made an error by omitting two pieces.
On the other hand, if we want to correct the problem including a unique reason for the try to fail, your suggestion of adding wTa8h1+wSa7g1 (FEN=R7/N4pp1/1P1pnkp1/5n2/3b1p2/1PP5/1PP2P2/K5NR) works - rawbats gives exactly R: 1. ... Bg5xSf4, dann 1. Ld4-e5 Sf4-d5# (and says about R: Be7xSd6 - "Illegal: Mehr schwarze Bauern-Schlaege notwendig als weisse Steine fehlen") (2023-04-01)
A.Buchanan: Hi Mario, thanks for this, I agree with everything you say. It's curious that the reprint in Problem did not pick up the error. Any overlooked black units are more likely to have been lurking on dark squares, maybe sBb4d2. This forces the try to only fail for 1 reason, albeit rather banal. Does this work. Or the +wTTSS mentioned forces the solver to do a little more counting, and there is a lot more solving space to search for the h#1. Rawbats' conversational skills seem to have improved: have you integrated it with ChatGPT maybe? (2023-04-02)
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A.Buchanan: Yes bBf8 would have died at home but bPc could capture twice to promote on c1 or e1 (2023-03-31)
A.Buchanan: Odd. The diagram is thematically symmetric, so not just missing a unit. WinChloe has the same diagram. I wondering if we are missing something from the stipulation. Does anyone have access to an archive for this? It's also odd that it was reprinted: surely there would be a comment there? I suppose it can be rendered sound by placing wTTSS somewhere symmetric. Then Black runs out of pawn captures if sLd4 is promoted. In any case, wPh7xg8=S is affordable. (2023-04-01)
Mario Richter: The reprint in 'Problem' says: "Ne e7xSd6 radi nepravilne postave" ("Not e7xSd6 because of illegal Position.") The diagram in 'Problem' is the same as here in the PDB.
How about adding black pawns on b7 and g2? (2023-04-01)
A.Buchanan: Hi Mario. I considered adding sBb5e2. That gives 10 needed captures by Black and 6 by White, including sLf8. So the try fails for *two* reasons. sBb7g2 fails even more badly. I thought that also adding wTTSS although more uneconomical in pieces defeats the try for only one reason. Also I liked the trick h7xg8=S. And it must make it harder to find the solution. Does Rawbats do simple retractors? Can you try wTa0h1 wSa7g1 as a risky initial bid, and then back off until there are no cooks? (2023-04-01)
Mario Richter: Hi Andrew, I was well aware that with adding sBb5e2 or sBb7g2 the try fails for two reasons (for [subjective] optical reasons I preferred sBb7g2 to sBb5e2]). The reason I suggested the addition of 2 black pawns was the following consideration: I cannot believe that such an experienced Retro Composer like C.E. Kemp could make such a big mistake. It's much more likely that the printer made an error by omitting two pieces.
On the other hand, if we want to correct the problem including a unique reason for the try to fail, your suggestion of adding wTa8h1+wSa7g1 (FEN=R7/N4pp1/1P1pnkp1/5n2/3b1p2/1PP5/1PP2P2/K5NR) works - rawbats gives exactly R: 1. ... Bg5xSf4, dann 1. Ld4-e5 Sf4-d5# (and says about R: Be7xSd6 - "Illegal: Mehr schwarze Bauern-Schlaege notwendig als weisse Steine fehlen") (2023-04-01)
A.Buchanan: Hi Mario, thanks for this, I agree with everything you say. It's curious that the reprint in Problem did not pick up the error. Any overlooked black units are more likely to have been lurking on dark squares, maybe sBb4d2. This forces the try to only fail for 1 reason, albeit rather banal. Does this work. Or the +wTTSS mentioned forces the solver to do a little more counting, and there is a lot more solving space to search for the h#1. Rawbats' conversational skills seem to have improved: have you integrated it with ChatGPT maybe? (2023-04-02)
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Keywords: Help retractor, Symmetrical position, Asymmetrical solution
Genre: Retro
FEN: 8/5pp1/1P1pnkp1/5n2/3b1p2/1PP5/1PP2P2/K7
Reprints: (24) Problem 83-86 09/1962
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-04-02 more...
Genre: Retro
FEN: 8/5pp1/1P1pnkp1/5n2/3b1p2/1PP5/1PP2P2/K7
Reprints: (24) Problem 83-86 09/1962
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-04-02 more...
R: 1. Ka3-a4?, dann 1. Lxa2=
R: 1. Ka3xBa4!, dann 1. Lxa2=
Mit folgender witziger Begründung des Autors: "If on the board are only KL-KL (and LL on squares of the same colour), by the rules of chess an immediate draw occurs! Therefore, the retro move Ka3-a4 is illegal." Ein Fehllöser: "Reichlich trivial." Ein Ratloser: "... oder wie darf ich das sehen?" TK hatte den Durchblick: "Die doppelte Rücknahmemöglichkeit kann man aber gar nicht übersehen (und schon gar nicht der Autor). Einzige Möglichkeit: nur Ka3xBa4, weil andernfalls die Stellung schon vorher patt wäre. Aber, aber: das ist remis, kein Patt!!" FR: "Meine 'Ehrenlösung' für diese Gruppe (hoffentlich stimmt sie auch)." WM: "Nette Pointe. Das erzähl' ich meinen Kindern, daß ich einen PLAKSIN gelöst habe." 1,2/I
R: 1. Ka3xBa4!, dann 1. Lxa2=
Mit folgender witziger Begründung des Autors: "If on the board are only KL-KL (and LL on squares of the same colour), by the rules of chess an immediate draw occurs! Therefore, the retro move Ka3-a4 is illegal." Ein Fehllöser: "Reichlich trivial." Ein Ratloser: "... oder wie darf ich das sehen?" TK hatte den Durchblick: "Die doppelte Rücknahmemöglichkeit kann man aber gar nicht übersehen (und schon gar nicht der Autor). Einzige Möglichkeit: nur Ka3xBa4, weil andernfalls die Stellung schon vorher patt wäre. Aber, aber: das ist remis, kein Patt!!" FR: "Meine 'Ehrenlösung' für diese Gruppe (hoffentlich stimmt sie auch)." WM: "Nette Pointe. Das erzähl' ich meinen Kindern, daß ich einen PLAKSIN gelöst habe." 1,2/I
A harbinger of Dead Reckoning-style reasoning, before that rule ever existed. As sound today in 2018, as when it was composed under "insufficient material for mate" rule.
Henrik Juel: Nice to see that I am not the only freak who mixes english text with german notation (to avoid the ambiguous B)
Were you inspired by this problem in your work on Dead Reckoning, Andrew? (2020-05-04)
A.Buchanan: Ha no: when I stumbled across DP rule I knew even less about chess problems than I know now, if you can imagine, and had never encountered this one which Werner Keym unearthed and published it in "Out Of the Box". Ecclesiastes 1:9 says "There is nothing new under the sun." Mario made this point about origin of Schnoebelen promotions too. Gollon's intepretation of Chaturanga (the earliest known forebear of chess) offers fascinating possibilities for Schnoebelen promotion, which I am sure the Indian retrograde analysts of 7th Century CE were adept at exploiting, in tablets alas now lost. See https://www.chessvariants.com/historic.dir/chaturanga.html.
The "insufficient material" composition does perhaps explain Plaksin's openness to the concept of DP, at a time when perhaps some noses elsewhere were being turned up, as he later composed with Kornilov *27* other DP problems, all to be found in PDB. (2020-05-04)
Ladislav Packa: Interesting, but on YouTube I saw a game (one of the actors was Magnus Carlsson), which ended in a position with only two kings and one of the players still made a move. (2020-05-05)
A.Buchanan: http://wismuth.com/chess/illegal-moves.html contains many other games where GMs were unable to tear themselves away from playing the dead game. I think it's kind of sweet that the GMs just can't stop playing. Have you got a link to the Carlsen game please, Ladislav? (2020-05-06)
Ladislav Packa: I'm sorry, Andrew, but I don't remember. I've seen hundreds of games on youtube. But I encountered similar cases in my own practice, mostly a joke, and the game immediately ended with a smile and a handshake. (2020-05-06)
A.Buchanan: A completely different stipulation: -w, h=1 half-duplex (2024-01-11)
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Henrik Juel: Nice to see that I am not the only freak who mixes english text with german notation (to avoid the ambiguous B)
Were you inspired by this problem in your work on Dead Reckoning, Andrew? (2020-05-04)
A.Buchanan: Ha no: when I stumbled across DP rule I knew even less about chess problems than I know now, if you can imagine, and had never encountered this one which Werner Keym unearthed and published it in "Out Of the Box". Ecclesiastes 1:9 says "There is nothing new under the sun." Mario made this point about origin of Schnoebelen promotions too. Gollon's intepretation of Chaturanga (the earliest known forebear of chess) offers fascinating possibilities for Schnoebelen promotion, which I am sure the Indian retrograde analysts of 7th Century CE were adept at exploiting, in tablets alas now lost. See https://www.chessvariants.com/historic.dir/chaturanga.html.
The "insufficient material" composition does perhaps explain Plaksin's openness to the concept of DP, at a time when perhaps some noses elsewhere were being turned up, as he later composed with Kornilov *27* other DP problems, all to be found in PDB. (2020-05-04)
Ladislav Packa: Interesting, but on YouTube I saw a game (one of the actors was Magnus Carlsson), which ended in a position with only two kings and one of the players still made a move. (2020-05-05)
A.Buchanan: http://wismuth.com/chess/illegal-moves.html contains many other games where GMs were unable to tear themselves away from playing the dead game. I think it's kind of sweet that the GMs just can't stop playing. Have you got a link to the Carlsen game please, Ladislav? (2020-05-06)
Ladislav Packa: I'm sorry, Andrew, but I don't remember. I've seen hundreds of games on youtube. But I encountered similar cases in my own practice, mostly a joke, and the game immediately ended with a smile and a handshake. (2020-05-06)
A.Buchanan: A completely different stipulation: -w, h=1 half-duplex (2024-01-11)
more ...
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Keywords: Help retractor, Dead Position, Aristocrat, Miniature, Minimal
Genre: Retro, Fairies
Computer test: C+ deadpos v2.1 8-Jan-2024
FEN: 8/8/8/8/K7/8/b7/kB6
Reprints: 440 Out Of the Box , p. 141, 2018
www.thbrand.de 14/01/2018
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-18 more...
Genre: Retro, Fairies
Computer test: C+ deadpos v2.1 8-Jan-2024
FEN: 8/8/8/8/K7/8/b7/kB6
Reprints: 440 Out Of the Box , p. 141, 2018
www.thbrand.de 14/01/2018
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-18 more...
R: 1. f7-f8=D g2xDh1=S, dann 1. g2xh1=T f7-f8=L=
Cook: R: 1. Df7xDf8 Bg2xDh1=S, dann 1. gxh1=T exf8=L/S= zB
Cook: R: 1. Df7xDf8 Bg2xDh1=S, dann 1. gxh1=T exf8=L/S= zB
Mario Richter: Ist die Stellung korrekt? Es geht auch (mit vielen Variationen): R: 1.Df7xDf8 Bg2xDh1, dann 1.g2xh1=T e7xf8=L/S= (2009-12-08)
A.Buchanan: I don't see any obvious typo or fix. This is not in WinChloe (2024-01-14)
comment
A.Buchanan: I don't see any obvious typo or fix. This is not in WinChloe (2024-01-14)
comment
Keywords: Help retractor, Allumwandlung (Ds:tL), Type C
Genre: Retro, Fairies
Computer test: Cooked by Deadpos v2.3 14-Jan-2024
FEN: NRKRBQ1k/1PPPP2P/1P3rP1/8/2p5/2B5/5p1p/5Nbn
Reprints: 114 206mal Allumwandlung 1991
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-21 more...
Genre: Retro, Fairies
Computer test: Cooked by Deadpos v2.3 14-Jan-2024
FEN: NRKRBQ1k/1PPPP2P/1P3rP1/8/2p5/2B5/5p1p/5Nbn
Reprints: 114 206mal Allumwandlung 1991
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-21 more...
12 - P0005547
Erich Bartel
Josef Haas
988 feenschach 16 08/1973
(13+6) cooked
-1w -1s, dann h=1
b) wBd2 nach e4
Erich Bartel
Josef Haas
988 feenschach 16 08/1973
(13+6) cooked
-1w -1s, dann h=1
b) wBd2 nach e4
a) R: 1. e7-e8=L Da8xSh1, dann Da8-f8 e7xf8=L=
b) R: 1. e7-e8=L g2xSh1=D, dann g2xh1=T e7-e8=S=
Cook: R: 1. Kd2-e2 Df3xSh1, dann 1. Df3-f6 Bg5xf6=
b) R: 1. e7-e8=L g2xSh1=D, dann g2xh1=T e7-e8=S=
Cook: R: 1. Kd2-e2 Df3xSh1, dann 1. Df3-f6 Bg5xf6=
A.Buchanan: In both candidate solutions, counting of wPs after retraction on means it must be an original unit uncaptured on h1 so can only be wS.
The solution for b) does not work for a) because, if one retracts two promoting moves, then wPs have captured 9/10 missing Black units, while Black has 1/2 accounted for by wBc1. However wPg & bPg passed one another, which requires two more captures by a single player.
In b) the exciting retraction Qa8xh8 is blocked, however now the free pawn captures to explain g-file are shifted from 1+1 to 2+0, so bPg can pass wPg. But the vacation of d2 allows a new cook. This is fixable by shifting wPb instead of wPd. We don't need to shift it to an adjacent file: the solution is still ok if the balance is 2+1.
So "b) wPb2 to b7" fixes the cook, and it's validated by deadpos. (2024-01-15)
comment
The solution for b) does not work for a) because, if one retracts two promoting moves, then wPs have captured 9/10 missing Black units, while Black has 1/2 accounted for by wBc1. However wPg & bPg passed one another, which requires two more captures by a single player.
In b) the exciting retraction Qa8xh8 is blocked, however now the free pawn captures to explain g-file are shifted from 1+1 to 2+0, so bPg can pass wPg. But the vacation of d2 allows a new cook. This is fixable by shifting wPb instead of wPd. We don't need to shift it to an adjacent file: the solution is still ok if the balance is 2+1.
So "b) wPb2 to b7" fixes the cook, and it's validated by deadpos. (2024-01-15)
comment
Keywords: Help retractor, Allumwandlung (Ld:tS), Non-standard material (L)
Genre: Retro, Fairies
Computer test: HC+ for a) & fix for b), HC- for original a) Deadpos v2.3 14-Jan-2024
FEN: 4B2k/3p1B2/3P2P1/6P1/6P1/6P1/1P1PKp1p/1R1R1Qbq
Reprints: 216 Hobelspäne (2) 26/08/2017
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-18 more...
Genre: Retro, Fairies
Computer test: HC+ for a) & fix for b), HC- for original a) Deadpos v2.3 14-Jan-2024
FEN: 4B2k/3p1B2/3P2P1/6P1/6P1/6P1/1P1PKp1p/1R1R1Qbq
Reprints: 216 Hobelspäne (2) 26/08/2017
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-18 more...
13 - P0006255
Filip S. Bondarenko
5901 FEENSCHACH 07/1962
(1+2)
Weiß und Schwarz nehmen je 3 Züge zurück, dann h#1
Es dürfen nur 2 weiße Bauern entschlagen werden.
Filip S. Bondarenko
5901 FEENSCHACH 07/1962
(1+2)
Weiß und Schwarz nehmen je 3 Züge zurück, dann h#1
Es dürfen nur 2 weiße Bauern entschlagen werden.
Bernd Schwarzkopf: zurück: 1.Kg4xBg3 Kd3-c2 2.Kg5-g4 Ke4-d3 3.Kh5xBg5 Kf5-e4; vor: 1.g3-g4# (2024-03-29)
comment
comment
Keywords: Constrained problem, Help retractor
Genre: Retro
FEN: 8/8/8/8/7p/6k1/2K5/8
Input: Gerd Wilts, 1995-08-20
Last update: Gerd Wilts, 1996-07-06 more...
Genre: Retro
FEN: 8/8/8/8/7p/6k1/2K5/8
Input: Gerd Wilts, 1995-08-20
Last update: Gerd Wilts, 1996-07-06 more...
1) R: 1. Kc5xDd6 Dd7xDd6, dann 1. Dc6 Dxc6=
2) R: 1. Kc5xBd6 c7xDd6, dann 1. c6 Dxc6#
2) R: 1. Kc5xBd6 c7xDd6, dann 1. c6 Dxc6#
siehe 9200
mri: Mehrere NL, z.B. R: Kc6xLd6 Lc5xDd6 V: 1.Ka5-a6 Dd6xc5 oder R: Kc5xTd6 Tb6xDd6 V: 1.Tb6-c6 Dd6xc6 (2007-10-25)
Mario Richter: s. P0005054 (2009-12-31)
A.Buchanan: Reasonable to suppose that P0005054 is the correction (2024-01-15)
comment
mri: Mehrere NL, z.B. R: Kc6xLd6 Lc5xDd6 V: 1.Ka5-a6 Dd6xc5 oder R: Kc5xTd6 Tb6xDd6 V: 1.Tb6-c6 Dd6xc6 (2007-10-25)
Mario Richter: s. P0005054 (2009-12-31)
A.Buchanan: Reasonable to suppose that P0005054 is the correction (2024-01-15)
comment
Keywords: Help retractor, only Kings, Aristocrat, Miniature, Superseded by (P0005054)
Genre: Retro, Fairies
Computer test: C- Deadpos v2.3 14-Jan-2024
FEN: 8/8/3K4/k7/8/8/8/8
Input: Gerd Wilts, 1995-09-10
Last update: A.Buchanan, 2024-01-18 more...
Genre: Retro, Fairies
Computer test: C- Deadpos v2.3 14-Jan-2024
FEN: 8/8/3K4/k7/8/8/8/8
Input: Gerd Wilts, 1995-09-10
Last update: A.Buchanan, 2024-01-18 more...
R: 1. a7-a8=D+ h2-h1=S, dann 1. h1=L a8=T=
Cook: NL
R: 1. Da4-a8+ Sf2xLh1, dann 1. Kxb6 Lxg2=
R: 1. Da4-a8+ Sf2xTh1, dann 1. Kxb6 Th7=
Cook: NL
R: 1. Da4-a8+ Sf2xLh1, dann 1. Kxb6 Lxg2=
R: 1. Da4-a8+ Sf2xTh1, dann 1. Kxb6 Th7=
Adrian Storisteanu: Two wPs (e.g. +wPe4,+wPh4) can restore the glory to this nice, thoroughly mixed AUW... (2015-06-10)
A.Buchanan: Or instead +wPa5 or +wPc5. In either case, free to "downgrade" wBg1 to wS. This is more economical than adding two pawns, but separates the two islands conceptually, as b6 no longer needs to be controlled by wBg1. (2024-01-15)
more ...
comment
A.Buchanan: Or instead +wPa5 or +wPc5. In either case, free to "downgrade" wBg1 to wS. This is more economical than adding two pawns, but separates the two islands conceptually, as b6 no longer needs to be controlled by wBg1. (2024-01-15)
more ...
comment
Keywords: Allumwandlung (Ds:lT), Help retractor, Miniature, Type C
Genre: Retro, Fairies
Computer test: C- for original & C+ for Adrian's & Andrew's proposed fixes. Deadpos v2.3 14-Jan-2024
FEN: Q7/1k6/1N1K4/8/8/8/6p1/6Bn
Input: Gerd Wilts, 1996-07-28
Last update: A.Buchanan, 2024-01-21 more...
Genre: Retro, Fairies
Computer test: C- for original & C+ for Adrian's & Andrew's proposed fixes. Deadpos v2.3 14-Jan-2024
FEN: Q7/1k6/1N1K4/8/8/8/6p1/6Bn
Input: Gerd Wilts, 1996-07-28
Last update: A.Buchanan, 2024-01-21 more...
R: 1. c7-c8=T h2-h1=D, dann 1. h1=L cxd8=S=
Cook: NL
R: 1. Tb8-c8 Dh6xDh1, dann 1. Sd8-e6 Dh1xh6=
Cook: NL
R: 1. Tb8-c8 Dh6xDh1, dann 1. Sd8-e6 Dh1xh6=
Adrian Storisteanu: Possible fix: +wPh5 (4+4). (2015-08-05)
A.Buchanan: A cool fix which keeps miniature status is -bSd8 + bRd8 (2024-01-15)
A.Buchanan: Alas my suggestion is anticipated by P1202424, ah well. (2024-01-16)
comment
A.Buchanan: A cool fix which keeps miniature status is -bSd8 + bRd8 (2024-01-15)
A.Buchanan: Alas my suggestion is anticipated by P1202424, ah well. (2024-01-16)
comment
Keywords: Allumwandlung (Td:lS), Help retractor, Miniature, Superseded by (P1202424)
Genre: Retro, Fairies
Computer test: C- for original & C+ for Adrian & Andrew's fixes. Deadpos v2.3 14-Jan-2024
FEN: 2Rn4/8/k7/8/K7/8/6p1/6Bq
Reprints: Problemkiste (32) 10/1985
Input: Gerd Wilts, 1996-07-28
Last update: A.Buchanan, 2024-01-18 more...
Genre: Retro, Fairies
Computer test: C- for original & C+ for Adrian & Andrew's fixes. Deadpos v2.3 14-Jan-2024
FEN: 2Rn4/8/k7/8/K7/8/6p1/6Bq
Reprints: Problemkiste (32) 10/1985
Input: Gerd Wilts, 1996-07-28
Last update: A.Buchanan, 2024-01-18 more...
17 - P0007185
Jesse George Ingram
10231 The Fairy Chess Review 06/1955
(2+2)
-1w, dann h=1 half-duplex
Jesse George Ingram
10231 The Fairy Chess Review 06/1955
(2+2)
-1w, dann h=1 half-duplex
R: 1. a5xDb6, dann 1. a6 Dd6=
Olaf Jenkner: Wieso wird Weiß pattgesetzt? (2010-03-02)
Mario Richter: Weil der Komponist das so wollte :-)
In fs33 ist die Forderung wie folgt wiedergegeben: "Wei� nimmt einen Zug zurück und hilft, da� Schwarz sofort pattsetzen kann." (2010-03-03)
Olaf Jenkner: Ach so, h=1 bedeutet eigentlich, daß Schwarz beginnt. (2010-03-03)
Henrik Juel: Yes, it is a bit confusing; but for retros it is an old tradition that you should not interpret one move stipulations too rigorously. (2010-03-05)
Mario Richter: But at least retro play and forward play harmonize: the side that retracted last starts the forward play. (2010-03-05)
Adrian Storisteanu: Can easily make it conform to today's accepted standards (i.e., drop the half-duplex indication):
Ka1 pa2 / Kc1 pb3 (2+2)
-1b & h=1
- 1.a4xQb3 & 1.a4-a3 Qb3-d3= (2024-01-13)
Olaf Jenkner: Das wären dann viele Mütter. (2024-01-14)
A.Buchanan: @Olaf :-) (2024-01-15)
Adrian Storisteanu: :-) Just in reverse Polish notation...
(Didn't know the many fathers thing started that long ago. I totally missed both the obvious setting and the recorded keyword.) (2024-01-15)
more ...
comment
Mario Richter: Weil der Komponist das so wollte :-)
In fs33 ist die Forderung wie folgt wiedergegeben: "Wei� nimmt einen Zug zurück und hilft, da� Schwarz sofort pattsetzen kann." (2010-03-03)
Olaf Jenkner: Ach so, h=1 bedeutet eigentlich, daß Schwarz beginnt. (2010-03-03)
Henrik Juel: Yes, it is a bit confusing; but for retros it is an old tradition that you should not interpret one move stipulations too rigorously. (2010-03-05)
Mario Richter: But at least retro play and forward play harmonize: the side that retracted last starts the forward play. (2010-03-05)
Adrian Storisteanu: Can easily make it conform to today's accepted standards (i.e., drop the half-duplex indication):
Ka1 pa2 / Kc1 pb3 (2+2)
-1b & h=1
- 1.a4xQb3 & 1.a4-a3 Qb3-d3= (2024-01-13)
Olaf Jenkner: Das wären dann viele Mütter. (2024-01-14)
A.Buchanan: @Olaf :-) (2024-01-15)
Adrian Storisteanu: :-) Just in reverse Polish notation...
(Didn't know the many fathers thing started that long ago. I totally missed both the obvious setting and the recorded keyword.) (2024-01-15)
more ...
comment
Keywords: Help retractor, Vielväterstellung, Kindergarten Problem, Minimal, Miniature
Genre: Retro, Fairies
FEN: k1K5/p7/1P6/8/8/8/8/8
Reprints: (5) feenschach 33 04-05/1976
Input: Gerd Wilts, 1996-08-15
Last update: A.Buchanan, 2024-01-18 more...
Genre: Retro, Fairies
FEN: k1K5/p7/1P6/8/8/8/8/8
Reprints: (5) feenschach 33 04-05/1976
Input: Gerd Wilts, 1996-08-15
Last update: A.Buchanan, 2024-01-18 more...
R: 1. Bg7xSh8=D=, dann 1. g8=D#
A.Buchanan: What is MsP, please? (2024-01-12)
Henrik Juel: Mate instead of stalemate (Mat statt Pat)
In the diagram position Black is stalemated; White retracts and mates (2024-01-12)
comment
Henrik Juel: Mate instead of stalemate (Mat statt Pat)
In the diagram position Black is stalemated; White retracts and mates (2024-01-12)
comment
Keywords: Help retractor
Genre: Retro
FEN: 3b3Q/2pRnk1B/2p1p3/2p1K3/2p5/2p5/2P5/8
Input: Gerd Wilts, 1996-09-04
Last update: Gerd Wilts, 1996-09-06 more...
Genre: Retro
FEN: 3b3Q/2pRnk1B/2p1p3/2p1K3/2p5/2p5/2P5/8
Input: Gerd Wilts, 1996-09-04
Last update: Gerd Wilts, 1996-09-06 more...
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=
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...
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...
R: 1. f7xDe8=D+, dann 1. fxg8=S#
R: 1. f7xDe8=D+ Kf6-e7 g7xLh8=L+ ... Tb8-a8 ... c7xTb8=T
R: 1. f7xDe8=D+ Kf6-e7 g7xLh8=L+ ... Tb8-a8 ... c7xTb8=T
No. 1449 HN
AV: Je crois que c'est un Fou blanc en h8 et non un Cavalier, et les derniers coups sont gxFh8=F+ Rf6-e7 fxDe8=D+ (au lieu de fxCg8=C#). Avec l'antérieur cxTb8=T, cela donne une "Allumwandlung" avec une pièce noire prise de la même nature. (2005-06-09)
Henrik Juel: You must be right, AV, because with wSh8 the retroplay might be the bland -1.f7xDe8=D Kf6 etc. without unpromotion on h8. (2005-06-13)
Michel Caillaud: Indeed the diagram is wrong : there should be a white Bishop on h8
AUW spread over retro play (-1.fxDe8=D+ Kf6-e7 -2.gxLh8=L+ ...-n.cxTb8=T) and forward play 1.fxSg8=S#
Matching nature of promoted piece and piece captured by promotion. (2023-03-25)
comment
AV: Je crois que c'est un Fou blanc en h8 et non un Cavalier, et les derniers coups sont gxFh8=F+ Rf6-e7 fxDe8=D+ (au lieu de fxCg8=C#). Avec l'antérieur cxTb8=T, cela donne une "Allumwandlung" avec une pièce noire prise de la même nature. (2005-06-09)
Henrik Juel: You must be right, AV, because with wSh8 the retroplay might be the bland -1.f7xDe8=D Kf6 etc. without unpromotion on h8. (2005-06-13)
Michel Caillaud: Indeed the diagram is wrong : there should be a white Bishop on h8
AUW spread over retro play (-1.fxDe8=D+ Kf6-e7 -2.gxLh8=L+ ...-n.cxTb8=T) and forward play 1.fxSg8=S#
Matching nature of promoted piece and piece captured by promotion. (2023-03-25)
comment
Keywords: Help retractor, Promotion in the retro play, Promotion in forward play, Allumwandlung
Genre: Retro, h#
FEN: R1brQnnB/pp1pk2p/3pp1p1/6N1/6Kp/8/8/8
Input: Henri Nouguier, 2004-01-11
Last update: A.Buchanan, 2024-01-21 more...
Genre: Retro, h#
FEN: R1brQnnB/pp1pk2p/3pp1p1/6N1/6Kp/8/8/8
Input: Henri Nouguier, 2004-01-11
Last update: A.Buchanan, 2024-01-21 more...
21 - P1067164
Siegfried Hornecker
12437 Die Schwalbe 209 10/2004
nach N. Petrovic
(10+12)
Weiß nimmt 1 Zug zurück und gewinnt
Siegfried Hornecker
12437 Die Schwalbe 209 10/2004
nach N. Petrovic
(10+12)
Weiß nimmt 1 Zug zurück und gewinnt
R: 1. 0-0, dann 1. fxg6ep
Keywords: En passant, Help retractor, Castling
Genre: Retro, Studies
FEN: b7/p4P2/n1kbPp1p/3ppPp1/4pp2/8/P1PPP2P/5RK1
Input: Gerd Wilts, 2004-11-06
Last update: A.Buchanan, 2023-11-28 more...
Genre: Retro, Studies
FEN: b7/p4P2/n1kbPp1p/3ppPp1/4pp2/8/P1PPP2P/5RK1
Input: Gerd Wilts, 2004-11-06
Last update: A.Buchanan, 2023-11-28 more...
22 - P1068215
Zdravko Maslar
4936 feenschach 12/1986
2. Preis WJP
(1+2)
-1s, dann h=1
b) Kc1 nach b2
c) Kc1 nach a3
d) Kc1 nach a4
Zdravko Maslar
4936 feenschach 12/1986
2. Preis WJP
(1+2)
-1s, dann h=1
b) Kc1 nach b2
c) Kc1 nach a3
d) Kc1 nach a4
a) R: 1. Kb2xDc1, dann 1. Kb3 Da1=
b) R: 1. Ka1xTb2, dann 1. b3 Kc3=
c) R: 1. a5xSb4, dann 1. a4 Kc3=
d) R: 1. c5xLb4, dann 1. c4+ Kxc4=
b) R: 1. Ka1xTb2, dann 1. b3 Kc3=
c) R: 1. a5xSb4, dann 1. a4 Kc3=
d) R: 1. c5xLb4, dann 1. c4+ Kxc4=
Henrik Juel: a real gem (2023-05-20)
Adrian Storisteanu: Not an Allentschlag, there is no pawn uncapture. (2023-05-21)
comment
Adrian Storisteanu: Not an Allentschlag, there is no pawn uncapture. (2023-05-21)
comment
Keywords: Help retractor, RIFACE Retro Solving Tourney (2022), Kindergarten Problem, Minimal, Miniature, Kindergarten Problem, Miniature, Kindergarten Problem, Kindergarten Problem
Genre: Retro, Fairies
FEN: 8/8/8/8/1p6/3K4/8/2k5
Reprints: feenschach 158 01-03/2005
3 Phénix 331, p. 12922, 06/2022
Input: Gerd Wilts, 2006-01-21
Last update: A.Buchanan, 2024-01-18 more...
Genre: Retro, Fairies
FEN: 8/8/8/8/1p6/3K4/8/2k5
Reprints: feenschach 158 01-03/2005
3 Phénix 331, p. 12922, 06/2022
Input: Gerd Wilts, 2006-01-21
Last update: A.Buchanan, 2024-01-18 more...
23 - P1068439
Niels Høeg
Hannu Lehto
10095 Thema Danicum 123 07/2006
Niels Hoeg, Version Hannu Lehto
(9+15)
Weiß nimmt 1 Zug zurück, dann #1
Niels Høeg
Hannu Lehto
10095 Thema Danicum 123 07/2006
Niels Hoeg, Version Hannu Lehto
(9+15)
Weiß nimmt 1 Zug zurück, dann #1
Mario Richter: I think, the intended solution is R: -1.Qa1-g1, then 1.Qd1#
Further retraction: -1. ... g3-g2 -2.c2-c3 g4-g3 -3.Qh8-a1 g5-g4 -4.h7-h8=Q h3-h2 -5.h6-h7 f3-f2 -6.h5-h6 h6xBg5 -7. Bf6-g5 h7-h6 -8.Rg1-g8 f4-f3 -9.Ra1-g1 f5-f4 -10.Bb2-f6 f6-f5 -11.Bc1-b2 f7-f6 -12.b2-b4 Kb4-a4 -13.h4-h5 Qa4-a5 (2010-01-07)
Hans-Jürgen Manthey: zurück Da1-g1, vor Da1-d1#
R. 1. g3-g2 c2-c3 2. g4-g3 Dh8-a1 3. g5-g4 h7-h8D 4. f3-f2 h6-h7 5. f4-f3 h5-h6 6. h6xLg5 Lf6-g5 8. f5-f4 Lb2-f6 9. f6-f5 Tg1-g8 10. f7-f6 Ta1-g1 11. h3-h2 Lc1-b2 12. h7-h6 b2-b4 13. b4xSa3 Sb1-a3 14. c5xSb4 Sd5-b4 15. d6xTc5 Sf6-d5 16. Kb4-a4 Tg5-c5 17. Kc4-b4 Tg8-g5 18. Dc3-a5 Ta3-a6 19. Sa6-b8 g7-g8T 20. Lb8-a7 g6-g7 21. a7xDb6 Dg1-b6 22. Sc5-a6 g5-g6 23. Tb6-b7 g4-g5 24. Ta6-b6 g3-g4 25. g4xLh3 Sg8-f6 26. Dh8-c3 Dd1-g1 27. Tb7-c7 Lf1-h3 28. Ta4-a6 g2-g3 29. Kd5-c4 Th3-a3 30. Lc7-b8 Th1-h3 31. La5-c7 h4-h5 32. Tb6-b7 h2-h4 33. Sb7-c5 Kb8-a8 34. g5-g4 Kc7-b8 35. Sc5-b7 Kd8-c7 36. Sa6-c5 Ke7-d8 37. Tb8-b6 g7-g8S 38. Ta8-b8 Kf6-e7 39. sb8-a6 Kf5-f6 40. Ta3-a4 f6xSg7 41. Se8-g7+ Kg4-f5 42. Lc3-a5 Kf3-g4 43. b7-b5 Kf2-f3 44. c7-c6 f5-f6 45. Lg7-c3 Ke1-f2 46. Sf6-e8 Kf2-e1 47. Te3-a3 Ke1-f2 48. Dd8-h8 f4-f5 49. Te8-e3 Kf2-e1 50. Ke6-d5 Ke1-f2 51. Ke7-e6 Kf2-e1 52. Th8-e8 Ke1-f2 53. Ke8-e7 f2-f4 54. e7xSd6 Sf5-d6+ 55. Lf8-g7 Sh4-f5 56. Sg8-f6 Sf3-h4 57. g7-g5 Sg1-f3 (2023-03-11)
comment
Further retraction: -1. ... g3-g2 -2.c2-c3 g4-g3 -3.Qh8-a1 g5-g4 -4.h7-h8=Q h3-h2 -5.h6-h7 f3-f2 -6.h5-h6 h6xBg5 -7. Bf6-g5 h7-h6 -8.Rg1-g8 f4-f3 -9.Ra1-g1 f5-f4 -10.Bb2-f6 f6-f5 -11.Bc1-b2 f7-f6 -12.b2-b4 Kb4-a4 -13.h4-h5 Qa4-a5 (2010-01-07)
Hans-Jürgen Manthey: zurück Da1-g1, vor Da1-d1#
R. 1. g3-g2 c2-c3 2. g4-g3 Dh8-a1 3. g5-g4 h7-h8D 4. f3-f2 h6-h7 5. f4-f3 h5-h6 6. h6xLg5 Lf6-g5 8. f5-f4 Lb2-f6 9. f6-f5 Tg1-g8 10. f7-f6 Ta1-g1 11. h3-h2 Lc1-b2 12. h7-h6 b2-b4 13. b4xSa3 Sb1-a3 14. c5xSb4 Sd5-b4 15. d6xTc5 Sf6-d5 16. Kb4-a4 Tg5-c5 17. Kc4-b4 Tg8-g5 18. Dc3-a5 Ta3-a6 19. Sa6-b8 g7-g8T 20. Lb8-a7 g6-g7 21. a7xDb6 Dg1-b6 22. Sc5-a6 g5-g6 23. Tb6-b7 g4-g5 24. Ta6-b6 g3-g4 25. g4xLh3 Sg8-f6 26. Dh8-c3 Dd1-g1 27. Tb7-c7 Lf1-h3 28. Ta4-a6 g2-g3 29. Kd5-c4 Th3-a3 30. Lc7-b8 Th1-h3 31. La5-c7 h4-h5 32. Tb6-b7 h2-h4 33. Sb7-c5 Kb8-a8 34. g5-g4 Kc7-b8 35. Sc5-b7 Kd8-c7 36. Sa6-c5 Ke7-d8 37. Tb8-b6 g7-g8S 38. Ta8-b8 Kf6-e7 39. sb8-a6 Kf5-f6 40. Ta3-a4 f6xSg7 41. Se8-g7+ Kg4-f5 42. Lc3-a5 Kf3-g4 43. b7-b5 Kf2-f3 44. c7-c6 f5-f6 45. Lg7-c3 Ke1-f2 46. Sf6-e8 Kf2-e1 47. Te3-a3 Ke1-f2 48. Dd8-h8 f4-f5 49. Te8-e3 Kf2-e1 50. Ke6-d5 Ke1-f2 51. Ke7-e6 Kf2-e1 52. Th8-e8 Ke1-f2 53. Ke8-e7 f2-f4 54. e7xSd6 Sf5-d6+ 55. Lf8-g7 Sh4-f5 56. Sg8-f6 Sf3-h4 57. g7-g5 Sg1-f3 (2023-03-11)
comment
Keywords: Help retractor
Genre: Retro
FEN: Knb3R1/brrp4/Rpp5/qp6/kP6/p1P5/P2PPppp/6Q1
Input: Gerd Wilts, 2006-06-10
Last update: Gerd Wilts, 2006-06-10 more...
Genre: Retro
FEN: Knb3R1/brrp4/Rpp5/qp6/kP6/p1P5/P2PPppp/6Q1
Input: Gerd Wilts, 2006-06-10
Last update: Gerd Wilts, 2006-06-10 more...
R: 1. ... f2xDg1=K, dann 1. f1=L Dd4 2. Lc4 Db2#
R: 1. ... h2xDg1=K, dann 1. Ka1 Db6+ 2. Kba2 Db2#
R: 1. ... h2xDg1=K, dann 1. Ka1 Db6+ 2. Kba2 Db2#
Arnold Beine: Die erste Lösung geht nicht, weil am Ende der sKa3 noch das Fluchtfeld b4 hat.
Korrekturvorschlag: +sBb4 (dann geht nur die 1. Lösung) und als Zwilling "b) -sBb4" (dann geht nur die 2. Lösung) (2022-08-28)
more ...
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Korrekturvorschlag: +sBb4 (dann geht nur die 1. Lösung) und als Zwilling "b) -sBb4" (dann geht nur die 2. Lösung) (2022-08-28)
more ...
comment
Keywords: Help retractor, Rex Multiplex
Genre: Retro, Fairies
FEN: 8/8/8/8/p7/kk6/k5P1/2K3k1
Reprints: (1) Mat Plus 09/10 01-06/2009
Input: Gerd Wilts, 2009-05-30
Last update: James Malcom, 2020-10-07 more...
Genre: Retro, Fairies
FEN: 8/8/8/8/p7/kk6/k5P1/2K3k1
Reprints: (1) Mat Plus 09/10 01-06/2009
Input: Gerd Wilts, 2009-05-30
Last update: James Malcom, 2020-10-07 more...
25 - P1112386
Mrs. W. J. Baird
(2) British Chess Magazine , p. 136, 03/1903
(1+1) C+
Hilfsrückzüger
siehe Text
Mrs. W. J. Baird
(2) British Chess Magazine , p. 136, 03/1903
(1+1) C+
Hilfsrückzüger
siehe Text
R: 1. Kf6xBg6, dann 1. ... Kh8 Kf7, dann R: sBh7xBg6, dann 2. ... g7#
Originalforderung: 1) White to retract his last move 2) Black to play 3) White to play 4) Black retract a previous move so that 5) White can give mate with Pawn.
Originalforderung: 1) White to retract his last move 2) Black to play 3) White to play 4) Black retract a previous move so that 5) White can give mate with Pawn.
A.Buchanan: Deadpos v2 can now solve this, even though PDB animation can't manage to show it:
6k1/8/6K1/8/8/8/8/8 b }}= r1 }}= flip }}= m2 }}= flip }}= r1 }}= flip }}= #1 (p)
h5xRg6 flip then g8h7 h5h4 flip h6xPh7 flip then h7h8q#
f5xRg6 flip then g8h7 f5f4 flip h6xPh7 flip then h7h8q#
g5xPg6 flip then g8h7 g5f6 flip h6xPh7 flip then h7h8q#
g5xPg6 flip then g8h7 g5f6 flip h6xPh7 flip then h7h8r#
g5xPg6 flip then g8h7 g5h4 flip h6xPh7 flip then h7h8q#
g5xPg6 flip then g8h7 g5g4 flip h6xPh7 flip then h7h8q#
g5xPg6 flip then g8h7 g5f4 flip h6xPh7 flip then h7h8q#
f6xPg6 flip then g8h8 f6f7 flip h7xPg6 flip then g6g7#
nsols 8 (2024-01-05)
comment
6k1/8/6K1/8/8/8/8/8 b }}= r1 }}= flip }}= m2 }}= flip }}= r1 }}= flip }}= #1 (p)
h5xRg6 flip then g8h7 h5h4 flip h6xPh7 flip then h7h8q#
f5xRg6 flip then g8h7 f5f4 flip h6xPh7 flip then h7h8q#
g5xPg6 flip then g8h7 g5f6 flip h6xPh7 flip then h7h8q#
g5xPg6 flip then g8h7 g5f6 flip h6xPh7 flip then h7h8r#
g5xPg6 flip then g8h7 g5h4 flip h6xPh7 flip then h7h8q#
g5xPg6 flip then g8h7 g5g4 flip h6xPh7 flip then h7h8q#
g5xPg6 flip then g8h7 g5f4 flip h6xPh7 flip then h7h8q#
f6xPg6 flip then g8h8 f6f7 flip h7xPg6 flip then g6g7#
nsols 8 (2024-01-05)
comment
Keywords: only Kings, Help retractor, Aristocrat, Miniature
Genre: Retro
Computer test: C+ deadpos v2.0
FEN: 6k1/8/6K1/8/8/8/8/8
Input: Frank Müller, 2010-08-06
Last update: A.Buchanan, 2024-01-05 more...
Genre: Retro
Computer test: C+ deadpos v2.0
FEN: 6k1/8/6K1/8/8/8/8/8
Input: Frank Müller, 2010-08-06
Last update: A.Buchanan, 2024-01-05 more...
R: 1. b7-b8=S, dann 1. Ld8 Ka6 2. b8=S#
R: 1. b7-b8=S, dann 1. Ld8 Kb8 2. Sc6#
Cook: R: 1. Sa6-b8, dann 1. Lc5+! Kxa6 2. Ta7#
R: 1. Sa6-b8, dann 1. Lc5+! Ka8 2. Ta7#
R: 1. b7-b8=S, dann 1. Ld8 Kb8 2. Sc6#
Cook: R: 1. Sa6-b8, dann 1. Lc5+! Kxa6 2. Ta7#
R: 1. Sa6-b8, dann 1. Lc5+! Ka8 2. Ta7#
Keywords: Miniature Collection (0011852), Help retractor, Aristocrat, Miniature, Promotion in the retro play (S), Promotion in forward play (S)
Genre: 2#, Retro
FEN: 1N6/k3BR2/8/8/3N4/2K5/8/8
Input: Felber, Volker, 2010-09-11
Last update: A.Buchanan, 2024-01-18 more...
Genre: 2#, Retro
FEN: 1N6/k3BR2/8/8/3N4/2K5/8/8
Input: Felber, Volker, 2010-09-11
Last update: A.Buchanan, 2024-01-18 more...
R: 1. Sc5xTe6 h7xTg6, dann 1. Te6-d6 Tg6-g5#
Cook: R: 1. Sc5-e6 (oder Sc5xTe6) Kc4xTd5, dann 1. Kc4-b5 Sc5-d3# (oder Sa6#)
Cook: R: 1. Sc5-e6 (oder Sc5xTe6) Kc4xTd5, dann 1. Kc4-b5 Sc5-d3# (oder Sa6#)
Motto: "Our play"
Originalforderung 1.White played last, retract his move 2.Black retracts his last move 3.Black plays so as to enable-- 4.White to mate 5.No Queens
A.Buchanan: The issue is that wPb3 covers a4. Rotate the board clockwise by 90 deg & shift wPc7 to c5 gives unique queenless solution R: 1. Se6xTf4 g3xTf2, dann 1. Tf5 Te2#, together with 68 queeny tries. (2022-11-13)
Adrian Storisteanu: The wQ is, unfortunately, extremely deadly. In your suggested position, there are still cooks, e.g.,
- 1.Kg6xPg7 g3xQf2 & 1.g3-g2 Qf2-e3#
- 1.Sg2xRf4 e3xQf2 & 1.Rf4-e4 Qf2-f6# (2022-11-13)
A.Buchanan: Yes I make no attempt to remove the "keine Damen" constraint, which is a kind of thematic aid that Baird employs quite often. deadpos identifies 69 solutions in the rotated position 8/6K1/8/2Ppk3/5N2/8/5p2/8, of which 68 require a queen (2022-11-13)
Adrian Storisteanu: The "no queens" constraint seems here almost thematic, as the intended solution works just as fine with a wQ uncapture: - 1.Sc5xRe6 h7xQg6 & 1.Re6-d6 Qg6-g5#... (2022-11-13)
Adrian Storisteanu: (What is "deadpos"?) (2022-11-13)
Adrian Storisteanu: A quick fix along your intention is also -wPb3,+bPc4 (90 queeny tries). (2022-11-13)
A.Buchanan: deadpos is a software engine that determines very efficiently whether a position is dead or not, and allows stipulations such as h=, hdp, h#. Simple retractions are also important for DP last move problems, and since no-one who's written help retractor functionality has ever made it public, this is of use for testing neglected problems such as Mrs Baird's, which have little to do with DP rule. A broader name for this engine will probably emerge at some point.
Your fix -wPb3, + bPc4 also works! (2022-11-13)
comment
Originalforderung 1.White played last, retract his move 2.Black retracts his last move 3.Black plays so as to enable-- 4.White to mate 5.No Queens
A.Buchanan: The issue is that wPb3 covers a4. Rotate the board clockwise by 90 deg & shift wPc7 to c5 gives unique queenless solution R: 1. Se6xTf4 g3xTf2, dann 1. Tf5 Te2#, together with 68 queeny tries. (2022-11-13)
Adrian Storisteanu: The wQ is, unfortunately, extremely deadly. In your suggested position, there are still cooks, e.g.,
- 1.Kg6xPg7 g3xQf2 & 1.g3-g2 Qf2-e3#
- 1.Sg2xRf4 e3xQf2 & 1.Rf4-e4 Qf2-f6# (2022-11-13)
A.Buchanan: Yes I make no attempt to remove the "keine Damen" constraint, which is a kind of thematic aid that Baird employs quite often. deadpos identifies 69 solutions in the rotated position 8/6K1/8/2Ppk3/5N2/8/5p2/8, of which 68 require a queen (2022-11-13)
Adrian Storisteanu: The "no queens" constraint seems here almost thematic, as the intended solution works just as fine with a wQ uncapture: - 1.Sc5xRe6 h7xQg6 & 1.Re6-d6 Qg6-g5#... (2022-11-13)
Adrian Storisteanu: (What is "deadpos"?) (2022-11-13)
Adrian Storisteanu: A quick fix along your intention is also -wPb3,+bPc4 (90 queeny tries). (2022-11-13)
A.Buchanan: deadpos is a software engine that determines very efficiently whether a position is dead or not, and allows stipulations such as h=, hdp, h#. Simple retractions are also important for DP last move problems, and since no-one who's written help retractor functionality has ever made it public, this is of use for testing neglected problems such as Mrs Baird's, which have little to do with DP rule. A broader name for this engine will probably emerge at some point.
Your fix -wPb3, + bPc4 also works! (2022-11-13)
comment
Keywords: Help retractor, Miniature, Constrained problem, Superseded by (P1414378)
Genre: Retro
Computer test: C- deadpos v1.0: 1 solution + 2x2 cooks
FEN: 8/1K6/4N1p1/3k4/3p4/1P6/8/8
Reprints: 66 Twentieth Century Retractor 1907
Input: Mario Richter, 2011-01-23
Last update: A.Buchanan, 2024-01-08 more...
Genre: Retro
Computer test: C- deadpos v1.0: 1 solution + 2x2 cooks
FEN: 8/1K6/4N1p1/3k4/3p4/1P6/8/8
Reprints: 66 Twentieth Century Retractor 1907
Input: Mario Richter, 2011-01-23
Last update: A.Buchanan, 2024-01-08 more...
28 - P1216951
Aegidius Samuel van Ommeren
4734 Tijdschrift van den NSB 01/1927
(1+2) C+
-(w+s), dann h#1
Aegidius Samuel van Ommeren
4734 Tijdschrift van den NSB 01/1927
(1+2) C+
-(w+s), dann h#1
R: 1. Kd6xTc7 Te3xDb3, dann 1. Tcc3 Dd5#
Keywords: Help retractor
Genre: Retro
Computer test: rawbats
FEN: 8/2K5/8/8/3k4/1r6/8/8
Input: Frank Müller, 2011-11-07
Last update: Mario Richter, 2011-11-25 more...
Genre: Retro
Computer test: rawbats
FEN: 8/2K5/8/8/3k4/1r6/8/8
Input: Frank Müller, 2011-11-07
Last update: Mario Richter, 2011-11-25 more...
R: 1. Bc7xTb8=L Tb7-b8, dann 1. Ta7 c8=D#
Der letzte Zug von Weiß muß: Bc7xTb8 und wird Läufer gewesen sein. Schwarz hat vorher Tb7-b8+ gezogen. Nach Rücknahme des letzten Zuges von Weiß und des letzten Zuges von Schwarz ergibt sich daher die Stellung : Weiß: Kh8 Bc7; Schwarz: Ka8, Tb7. Schwarz zieht daher jetzt, um das Matt in einem Zug zu ermöglichen: Tb7-a7 worauf Weiß mit c7-c8=D matt setzt.
Cook: Co-NLs
R: 1. Ba7xLb8=L Kb7xTa8, dann 1. Ka6 axb8=D,axb8=T
R: 1. Ba7xSb8=L Kb7xTa8, dann 1. Ka6 axb8=D,axb8=T
Der letzte Zug von Weiß muß: Bc7xTb8 und wird Läufer gewesen sein. Schwarz hat vorher Tb7-b8+ gezogen. Nach Rücknahme des letzten Zuges von Weiß und des letzten Zuges von Schwarz ergibt sich daher die Stellung : Weiß: Kh8 Bc7; Schwarz: Ka8, Tb7. Schwarz zieht daher jetzt, um das Matt in einem Zug zu ermöglichen: Tb7-a7 worauf Weiß mit c7-c8=D matt setzt.
Cook: Co-NLs
R: 1. Ba7xLb8=L Kb7xTa8, dann 1. Ka6 axb8=D,axb8=T
R: 1. Ba7xSb8=L Kb7xTa8, dann 1. Ka6 axb8=D,axb8=T
Forderung im 'Boten von der Ybbs': "Weiß nimmt seinen letzten Zug zurück, dann nimmt Schwarz seinen letzten Zug zurück und dann zieht Schwarz so, daß Weiß in einem Zug matt-setzen kann!"
Motto: "Das Waidhofner Problem"
als Autor ist angegeben "Dr. S. Knirt", dabei dürfte es sich um ein Pseudonym von Dr. Otto Trinks handeln (S.Knirt rückwärts gelesen ergibt trinKS)
Adrian Storisteanu: See P0002517. (2024-03-19)
comment
Motto: "Das Waidhofner Problem"
als Autor ist angegeben "Dr. S. Knirt", dabei dürfte es sich um ein Pseudonym von Dr. Otto Trinks handeln (S.Knirt rückwärts gelesen ergibt trinKS)
Adrian Storisteanu: See P0002517. (2024-03-19)
comment
Keywords: Help retractor, Aristocrat, Minimal, Miniature, under-promotion (L), Promotion in the mating move
Genre: Retro
FEN: kB5K/8/8/8/8/8/8/8
Reprints: 13 Bote von der Ybbs 28/12/1929
Input: Mario Richter, 2021-05-14
Last update: Alfred Pfeiffer, 2021-08-16 more...
Genre: Retro
FEN: kB5K/8/8/8/8/8/8/8
Reprints: 13 Bote von der Ybbs 28/12/1929
Input: Mario Richter, 2021-05-14
Last update: Alfred Pfeiffer, 2021-08-16 more...
30 - P1408845
Andrew Buchanan
Phénix 11/2021
after J-F. Baudoin & J-C. Gandy
(9+13)
-1s -1w -1s, dann h#1
Andrew Buchanan
Phénix 11/2021
after J-F. Baudoin & J-C. Gandy
(9+13)
-1s -1w -1s, dann h#1
R: 1. ... h2-h1=S+ 2. a7-a8=L Kc8-d8 dann 1. h1=T a8=D#
AB: Mario was kind enough to check this 2-Jul-2021. I hope it's ok if I quote his email:
The trick with the light-squared black Bishop is fine, but makes things too complicated for rawbats. It will happily retract e.g. R: 1. ... h2-h1=S+ 2. Lb7-a8 Ke7xDd8, dann 1. Kd6 Df6# without noticing that the retractions lead to a conflict on the g-file: either wPh2 captured the original Bishop c8 on the g-file, then bPg7 was not available a a capture object for the remaining white pawn captures, or wPh2 captured the original bPg7 on the g-file, then the original light-squared black bishop c8 was not available a capture object for the remaining white pawn captures f2xe3xd4 (both on dark squares).
So brain-checking your retractor and your logical argumentation I found no defects, and I think the problem is sound now
AB: Mario was kind enough to check this 2-Jul-2021. I hope it's ok if I quote his email:
The trick with the light-squared black Bishop is fine, but makes things too complicated for rawbats. It will happily retract e.g. R: 1. ... h2-h1=S+ 2. Lb7-a8 Ke7xDd8, dann 1. Kd6 Df6# without noticing that the retractions lead to a conflict on the g-file: either wPh2 captured the original Bishop c8 on the g-file, then bPg7 was not available a a capture object for the remaining white pawn captures, or wPh2 captured the original bPg7 on the g-file, then the original light-squared black bishop c8 was not available a capture object for the remaining white pawn captures f2xe3xd4 (both on dark squares).
So brain-checking your retractor and your logical argumentation I found no defects, and I think the problem is sound now
Keywords: Help retractor, Allumwandlung
Genre: Retro, h#
FEN: B2k4/2pp4/8/8/1PPP4/1rpP2PN/1pppPK2/nrbq3n
Input: A.Buchanan, 2023-04-13
Last update: A.Buchanan, 2024-01-21 more...
Genre: Retro, h#
FEN: B2k4/2pp4/8/8/1PPP4/1rpP2PN/1pppPK2/nrbq3n
Input: A.Buchanan, 2023-04-13
Last update: A.Buchanan, 2024-01-21 more...
31 - P1414564
Erich Bartel
Mario Richter
I Problemkiste , p. 313, 01/2007
EB correction MR
(13+6) C+
-1w -1s, dann h=1
Erich Bartel
Mario Richter
I Problemkiste , p. 313, 01/2007
EB correction MR
(13+6) C+
-1w -1s, dann h=1
R: d7-d8=D g2xSh1=L, dann 1. gxh1=T dxe8=S=
See P0005542.
A.Buchanan: WinChloe incorrectly reports this as M.Rittirsch. But what is the true source & date of this correction? Obviously, it wasn't F.Lapya. (2024-01-19)
Adrian Storisteanu: I'd would have put a wB (instead of the wQ) on d8 -- a subtler non-standard material?!... (2024-01-19)
Adrian Storisteanu: (... Ooops, but then no 'AUW'.) (2024-01-19)
comment
A.Buchanan: WinChloe incorrectly reports this as M.Rittirsch. But what is the true source & date of this correction? Obviously, it wasn't F.Lapya. (2024-01-19)
Adrian Storisteanu: I'd would have put a wB (instead of the wQ) on d8 -- a subtler non-standard material?!... (2024-01-19)
Adrian Storisteanu: (... Ooops, but then no 'AUW'.) (2024-01-19)
comment
Keywords: Help retractor, Allumwandlung (Dl:tS), Non-standard material (D)
Genre: Retro, Fairies
Computer test: HC+ Deadpos v2.3 14-Jan-2024 + simple retro-logic
FEN: 3Qn2k/7P/6P1/8/8/P4P2/RPPP1p1p/RQK2Bbb
Input: A.Buchanan, 2024-01-18
Last update: A.Buchanan, 2024-01-20 more...
Genre: Retro, Fairies
Computer test: HC+ Deadpos v2.3 14-Jan-2024 + simple retro-logic
FEN: 3Qn2k/7P/6P1/8/8/P4P2/RPPP1p1p/RQK2Bbb
Input: A.Buchanan, 2024-01-18
Last update: A.Buchanan, 2024-01-20 more...
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https://pdb.dieschwalbe.de/search.jsp?expression=COMMENTDATE%3E%3D20220810+AND+G%3D%27Retro%27+AND+NOT+A%3D%27Keym%2C+Werner%27+AND+K%3D%27Hilfsr%C3%BCckz%C3%BCger%27
The problems of this query have been registered by the following contributors:
Gerd Wilts (23)Henri Nouguier (1)
Frank Müller (2)
Felber, Volker (1)
Mario Richter (2)
A.Buchanan (2)
Miguel Ambrona: The fix proposed by Adrian works.
Verified with Deadpos v.2.2. (2024-01-12)
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