Die Schwalbe

32 problem(s) found in 7302 milliseconds (displaying 32 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND K='fluchtfeldgebender Schlüssel' AND K='Switchback'] [download as LaTeX]

1 - P1012445
Thomas R. Dawson
Allgemeine Zeitung Chemnitz 1925
P1012445
(6+6) C+
#2
1. Lg6! droht 2. Dd8#
1. ... 0-0 2. Lh7#
1. ... Txg5 2. Txh8#
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No. 278 HN
A.Buchanan: Without sTa5, Black castling rights would be gone. But I don’t think that observation is sufficient to make the problem retro, even if sTa5 had no role in the forward play. Have changed the genre from
Retro to #2. (2022-04-26)
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comment
Keywords: Flight-giving key, Castling, Switchback (wL)
Genre: 2#
Computer test: popeye 4.87 C+, popeye 4.87
FEN: 4k2r/1p2pNpB/7R/1K1Q2Pr/8/8/8/8
Reprints: Am Rande des Schachbretts , p. 14, 1947
Input: Henri Nouguier, 2004-01-11
Last update: A.Buchanan, 2022-04-26 more...
2 - P1015168
Petko A. Petkov
22 Miniaturen 1991
P1015168
(5+2) C+
s#4*
* 1. ... h3xg2#
1. Sf6 Kg3 2. Se2+ Kf2 3. Sg1 Kg3 4. Sfg4 h3xg2#
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Synthese-Meeraner (im Selbstmatt), Themafigur: sB
0859
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-26)
comment
Keywords: Pawn mate, Corner mate, Mutate, Switchback (k), Meerane-Thema, Obvious promotion, Miniature, Flight-giving key
Genre: s#
FEN: 8/8/8/7N/3N4/7p/5kNN/7K
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Marcin Banaszek, 2020-11-30 more...
3 - P1031220
A. C. J. van van Eelde
G. C. A. Oskam

452 Schweizerische Schachzeitung , p. 35, 03/1905
3. ehrende Erwähnung (aufgerückt)
1. Problemturnier 1905
Schweizerischer Schachbund
P1031220
(10+5)
#3
1. Sg6! droht 2. Se7+ Ke6 3. Lg4#
1. ... Lxh3 2. Sf8 Lc8,Ld7 3. Dh1#
1. ... Ke6 2. Sf4+ gxf4 3. Lc4#
1. ... Lf5 2. Db7+
1. ... Ke4 2. Se7+ Kf4 3. Sd5# 2. ... Lf5 3. Dxf5#
1. ... Kc6 2. Se5+ Kd5 3. Lc4#
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ohne wBh3 ginge sofort Dh1#. Also wird Schwarz zur Beseitigung dieses wB gezwungen.
Henrik Juel: dual 1... Lf5 2.Db7,Df7+ (2022-10-04)
comment
Keywords: Brian Stephenson Collection (16122), Switchback (wS), Flight-giving key
Genre: 3#
FEN: K1b2N2/7Q/5P2/p1Pk2p1/3B4/7P/2N1BP2/2b5
Reprints: Politiek en Cultuur 10/1938
158 Versunkene Schätze , p. 71, 1998
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-10-04 more...
4 - P1081146
Manfred Zucker
5315 Die Schwalbe 12/1985
1. ehrende Erwähnung
P1081146
(7+6) C+
s#13
1. Le3! Kc3 2. Ld2+ Kb3 3. Lh6 Kc3 4. Lg7+ Kb3 5. Se5 Kc3 6. Sc4+ Kb3 7. Tf6 Kc3 8. Td6+ Kb3 9. Lh6 Kc3 10. Ld2+ Kb3 11. Le3 Kc3 12. Ld4+ Kb3 13. Sxa5+ Txa5#
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Perikritische Umgehung der Schnittpunkte e5 und f6 - hin und zurück. Akkurates PendelManöver eines wL damit wS und wT ihre Lestimmungsfelder erreichen können. Eine glatte und elegante Darstellung, auch wenn man bereits noch ausgefeiltere Werke dieser Art gesehen hat (Preisrichter Uri Avner, Tamat-Gan, Israel)
(MZ629)
Sally: S. 148 Ausgewählte S. aufgaben (M. Zucker). (2010-08-18)
Moldenhauer: Computerprüfung: C+ Gustav 4.1d in 3 Tagen 4 Std. 7 Min. (2022-07-03)
comment
Keywords: Perikritikus, Pendulum, Flight-giving key, Switchback (Lk), Rücknahme Schlüsselzug, Selfblock, Battery creation, Discovered check
Genre: s#
FEN: 8/8/1PP5/p1K5/rp1B4/bk3N2/1p6/1B3R2
Input: HBae, 2009-02-06
Last update: Gunter Jordan, 2022-07-15 more...
5 - P1125223
Godfrey F. Heathcote
Norwich Mercury 08/02/1911
P1125223
(4+2) C+
#3*
* 1. ... b6 2. Kb5 Ke4 3. De6#

1. Dg6! Ke5 2. Sf3+ Kd5 3. e4#
1. ... b6 2. Sf3 b5 3. e4#
1. ... b5 2. Df6 Ke4 3. De6#
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BfS BK3 mm
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comment
Keywords: Miniature Collection (0043851), Minimal, Miniature, Pawn mate, Flight-giving key, Mutate, Pawn mate, Switchback (wD), Zugzwang-Goal
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 8/1p6/5Q2/3k4/1K6/4P3/8/4N3
Reprints: 203 Versunkene Schätze , p. 91, 1998
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2022-10-02 more...
6 - P1134326
Otto B. Wurzburg
Pittsburgh Gazette Times 26/02/1915
P1134326
(3+4) C+
#3
1. Lg5! 0-0 2. Lh6 Ta8 3. Dg7#
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E2-d3 m
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comment
Keywords: Miniature Collection (0330474), Miniature, Switchback, Flight-giving key
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 4k2r/5p2/2p2Q1B/2K5/8/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Dieter Berlin, 2023-12-07 more...
7 - P1134592
Claus Grupen
3374 Kieler Nachrichten 25/01/1997
P1134592
(5+1)
#5
1. La5 Kd4 2. Lc7 Kc4 3. Ld8 Kd4 4. Lf6+ Kc4 5. d3#
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BsL0 IM D20
Henrik Juel: C+ Popeye 4.61 (2023-05-27)
comment
Keywords: Miniature Collection (0073492), anticipated (P1152960), Rex solus (s), Miniature, Flight-giving key, Switchback (k), Pawn mate, Ideal mate
Genre: n#
FEN: 8/8/2K5/2N5/2k5/P1B5/3P4/8
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2023-05-27 more...
8 - P1144985
Nikolay S. Zinovyev
14893 Ideal-Mate Review 99 07/2005
P1144985
(4+3)
#12
1. Lf2 Kxh2 2. Ke7 Kh1 3. Tg1+ Kh2 4. Txg4 Kh1 5. Lg1 h2 6. Lxh2 Kxh2 7. Kf6 Kh3 8. Kg5 Kh2 9. Kh4 Kh1 10. Kg3 Kg1 11. Tf4 Kh1 12. Tf1#
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Ta IM LO6
Anton Baumann: C+ Gustav 4.2a (2022-02-24)
comment
Keywords: Miniature Collection (0329249), Ideal mate, Flight-giving key, Corner mate, Switchback (Lk), Rücknahme Schlüsselzug
Genre: n#
FEN: 3K4/8/8/8/6p1/6Rp/7P/6Bk
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2023-01-06 more...
9 - P1146390
Wilhelm Kienzl
Kieler Nachrichten 11/12/1971
P1146390
(5+2)
#3
1. 0-0-0 Kxc3 2. Kb1 Kb3 3. Td3#
1. ... Ka3 2. Kc2 Ka2 3. Ta1#
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E2-b3 m
SCHRECKE: C+, popeye 4.87 (2022-08-07)
comment
Keywords: Miniature Collection (0330185), Castling (wl), Castling key, Switchback (Tk), Flight-giving key, Model mate (Gnaden-), Miniature, Minimal (b)
Genre: 3#
FEN: 8/8/8/p7/P3R3/1kB5/8/R3K3
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2022-08-06 more...
10 - P1147496
Josef Belschan
3536 Wiener Schach-Zeitung 20, p. 319, 10/1937
Internationales Dreizügerturnier des "Interessanten Blattes"
1. ehr. Erw.
P1147496
(3+4) C+
#3
1. Ta3 droht 2. Th3+ Kg4 3. Df3#
1. ... g4 2. Ta4 g3 3. Th4# 2. ... d4 3. Txa5#
1. ... Kg4 2. Df3+ Kh4 3. Dh3#
1. ... Kh4 2. De6 Kh5 3. Th3# 2. ... g4 3. Dh6#
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B11-3DT Bg4 MW
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comment
Keywords: Miniature Collection (0052275), Miniature, Flight-giving key, Switchback, Blocknutzung
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 8/8/5Q2/p2p2pk/R7/8/8/4K3
Reprints: 46 Das interessante Blatt , p. 14, 18/11/1937
1407 Hamburger Nachrichten 21/03/1938
3 Problem-Palette , p. 5, 1970
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2022-08-10 more...
11 - P1151436
Oskar Blumenthal
633 Bohemia 27/11/1904
P1151436
(4+1)
#3
1. Dg2! Kb2 2. Sd3+ Kc3 3. Dc2#
1. ... Kxa1 2. Sd1 Kb1 3. Db2#
1. ... Kc1 2. Sd3+ Kd1 3. Dc2#
1. ... Ka2 2. Sd3+ Ka3 3. Da8#
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A5-DDD+ mm
Henrik Juel: dual 1... Kxa1 2.Sd1,Sd3 (2023-01-05)
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comment
Keywords: Miniature Collection (0053411), Aristocrat, Miniature, Switchback, ambush key, Model mate, Flight-giving key, Rex solus
Genre: 3#
FEN: Q7/8/8/4K3/8/8/5N2/Nk6
Reprints: 656 Schweizerische Schachzeitung , p. 105, 07/1906
15 Arbeiter-Zeitung (Wien) 07/06/1924
10 Die Schwalbe 5, p. 44, 02/1925
45 Das Schachproblem , p. 25, 1981
223 Perlen der Schachkomposition 1985
Schach-Echo 7, p. 190, 04/1993
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-01-05 more...
12 - P1156283
Friedhelm Schwieger
Stern 02/04/1992
P1156283
(5+2) C+
#3
1. Tc4! Ka3 2. Lc2 a1=D 3. Ta4#
1. ... a1=D 2. Lc2+ Ka3 3. Ta4#
1. ... a1=S 2. Ta4 Sc2 3. Lc4#
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B7-3b3
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comment
Keywords: Miniature Collection (0055446), Minimal, Miniature, Flight-giving key, Switchback (wT), Promotion (sD), under-promotion (sS), Blocknutzung
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/8/8/8/R2B4/1k1B4/pN3K2/8
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2022-11-05 more...
13 - P1194773
Camillo Gamnitzer
S1614 The Problemist 05/1995
4. Preis
P1194773
(12+13) C+
s#6
1. Df6?/Dg7? gxh2!

1. Dh8! droht 2. Sxg4+ Kf4 3. Sf2+ Kg5 4. Th5+ Kf4 5. Sg6+ Ke3 6. Sxd1+ Txd1#
1. ... gxh2 2. Txg4 droht 3. Dxh2 ... 4. Dg1+ Sf2#
2. ... bxc3! 3. Tb4 c2 4. Txe4+ Kxe4 5. De5+ dxe5 6. d5+ Lxb4#
1. ... Kf4 2. Txg4+ Ke3 3. Txg3+ Kf4 4. Tg4+ Ke3 5. Dh4 ... 6. Df2+ Sxf2#
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Anton Baumann: C+ Gustav 4.1d (2021-05-15)
comment
Keywords: Battery creation, Flight-giving key, Switchback, Line closure
Genre: s#
Computer test: Gustav 4.1d
FEN: 1R6/B3N3/3p4/b3QP2/1p1Pp1pR/2Ppk1p1/pp4PN/rr1nKB2
Input: Frank Müller, 2011-05-07
Last update: Marcin Banaszek, 2021-05-21 more...
14 - P1263343
Ralf Krätschmer
178 Rhein Main Presse 09/06/2001
P1263343
(6+13) C+
#5
1. De1+! Kxd4 2. Dd1+ Ke3 3. Le5 Sb3 4. Sd5+ Lxd5 5. Lf4# 3. ... Sc2 4. Sxg2+ Txg2 5. Lf4#
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more ...
comment
Keywords: Checking key, Flight-giving key, Switchback
Genre: n#
Computer test: SCHRECKE: Gustav 4.2c
FEN: b7/8/1p1B4/b4pr1/p2PpN2/2p1k2N/K5pp/n2Q2n1
Input: Felber, Volker, 2013-02-25
Last update: Dieter Berlin, 2023-07-13 more...
15 - P1374138
Kurt Keller
2020/13 Schach in Schleswig-Holstein 03/2020
P1374138
(5+1) C+
#4
b) Ke1->d1
a) 1. Tc5! Kd3 2. Sf8 Kd4,Ke3 3. Se6+,Se6 Kd3,Ke3 4. Tc3#
1. ... Ke3 2. Tc4 Kd3 3. Se5+ Ke3 4. Te4#

b) 1. Ta3! Kc4 2. Lc6 Kd4,Kb4 3. Kc2 Kc4 4. Ta4#
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Die Lösungen zur Aufgabe 2020/13 (Kurt Keller) lauten: a) 1. Tc5 Kd3 2. Sf8 Kbel. 3. Se6 (+) Kd3 4. Tc3# sowie b) 1. Ta3 Kc4 2. Lc6 Kb4/Kd4 3. Kc2 Kc4 4. Ta4#. „Als Zwillingsstück akzeptabel“ (Baldur Kozdon). „a) bietet zwei hübsche Varianten mit analogen Springer-Zügen und Rückkehr des weißen Turms im Mattzug. b) fällt demgegenüber ab“ (Stephen Rothwell). „attraktive, übersichtliche Miniatur mit guter Ausnutzung des wenigen Materials“ (Claus Grupen).
(Winus Müller (Rathjensdorf, Germany): Problemschach. Lösungen zur Ausgabe 03/2020, in: Schach in Schleswig-Holstein, 2020-05)
Comments:
  • Note on publication (German): Liebe Löser, die beiden direkten Mattaufgaben sind etwas schwieriger [...]. (Winus Müller (Rathjensdorf, Germany): Problemschach, in: Schach in Schleswig-Holstein, 2020-03)
  • Author – Kurt Keller (Ulm, Germany)
  • Yet Another Chess Problem Database (500597)

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comment
Keywords: Rex solus (s), Miniature, Stalemate dissolution, Flight-giving key, Model mate, Switchback (T), Twin
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 8/1B1N4/8/8/3k4/2R5/1P6/4K3
Input: Kurt Keller, 2020-04-04
Last update: Kurt Keller, 2021-03-30 more...
16 - P1381913
Mirko Degenkolbe
S258 Problem Paradise 91, p. 20, 07-09/2020
WCCI=5
P1381913
(6+3) C+
s#10
* 1. ... La1xb2#

1. Sb7! Zugzwang
1. ... Kc4 2. Db3+ Kd4 3. Dd3+ Ke5 4. Df5+ Kd4 5. Df4+ Kc3 6. Dd2+ Kc4 7. Db4+ Kd5 8. Dd6+ Kc4 9. Sa5+! Kc3 10. Dd1! La1xb2#
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Synthese-Meeraner (im Selbstmatt), Themafigur: sL
[MD 1607]
In the starting position there is an immediate set matt.
But this cannot be maintained by white.
That's why he has to come up with something new.
In order to restore the starting position and thereby shift the duty to move to black, White needs ten moves.
The black king has to run two linear Rundlaufs and the white queen must be led a tempo onto the square d6. Only when all of this has been implemented can white S and white Q return to their original stands, forcing black to set the mat.
Model mate.
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comment
Keywords: Switchback (D-8, S), Model mate, Mutate, Selfblock, Meerane-Thema, Flight-giving key
Genre: s#
Computer test: SCHRECKE: C+, Gustav 4.1d, Brute Force
FEN: 8/8/8/N6p/7P/2k5/1R6/bBKQ4
Input: Felber, Volker, 2020-11-14
Last update: Marcin Banaszek, 2022-09-01 more...
17 - P1384836
Kurt Keller
StrateGems 93, p. 51, 01-03/2021
Happy Holidays
P1384836
(9+3) C+
#3 v
1. Kd6? Kxb5 2. Tb1+ Kc4 3. La6#
2. ... Ka4!
2. Ta1 Ka4 3. Ld7#
2. ... Kc4 3. La6#
2. ... c4!

1. Kb6! Kxd5 2. Lf5 c4 3. Td1#
2. ... Kc4 3. Le6#
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Happy Holidays
By Mike Prcic

As the holiday season approaches, we are reminded of the current COVID-19 pandemic. It has been a difficult time for many of us. I have been in touch with many composers. Many are suffering, especially the older ones. Some are not infected but still need medical care, which is not available, since the hospitals are swamped with COVID-19 patients. One of StrateGems’ editors lost his younger brother to COVID-19. A long-time subscriber from Italy informed me that his whole family was infected. He had the hardest time with the infection but survived and is now COVID-19 negative.
On a positive side (if there is such a thing), we all have ample time for composing (and in my case for playing online bridge). WCCT-11 should benefit from the pandemic. Nevertheless, I hope the vaccine arrives soon, is effective, and that we all can go back to our lives.
To brighten the holiday spirit, Kurt Keller has sent a composition that reminds us of the Christmas tree. Thank you, Kurt!

1.Kd6? Kxb5 2.Rb1+ Ka4! (Kc4? 3.Ba6#);
2.Ra1 c4! (2…Ka4/Kc4 3.Bd7/Ba6#)
1.Kb6! Kxd5 2.Bf5 zz c4/Kc4 3.Rd1/Be6#

(Mike Prcic (Westlake Village, CA): Happy Holidays, in: StrateGems, January 2021)
Comments:
  • Author – Kurt Keller (Ulm, Germany)
  • Yet Another Chess Problem Database (...)

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comment
Keywords: Symbol problem (Christmas tree), Stalemate dissolution, Flight-giving key, Selfblock, Switchback (k,k), Line opening, Symmetrical position, Asymmetrical solution
Genre: 3#
Computer test: Henrik Juel: C+ Popeye 4.61 (2021-01-01)
FEN: 2B5/2B5/2K5/1PpP4/2k5/P1p1P3/2P5/2R5
Input: Kurt Keller, 2021-01-01
Last update: Kurt Keller, 2021-01-09 more...
18 - P1384868
Kurt Keller
2101 Gaudium 235, p. 1, 24/12/2020
Allen Gaudiumlesern zum Fest
P1384868
(10+1) C+
#4
1. Ld8! droht 2. a5 [A] droht 3. Le7#
2. ... Kd6 [a] 3. Lf6 [B] droht 4. c5#
3. ... Kc5 [b] 4. Le7#

1. ... Kd6 2. Lf6 [B] droht 3. c5#
2. ... Kc5 [b] 3. a5 [A] droht 4. Le7#
3. ... Kd6 [a] 4. c5#
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Den nun schon fast traditionellen Weihnachtsbaum stiftet diesmal unser Leser Kurt Keller aus Ulm. Die Löser mögen beachten, dass dieses Problem ebenfalls am Löseturnier teilnimmt!
(Gunter Jordan (Jena, Germany): Urdrucke, in: Gaudium, Ausgabe 235, 2020-12-24)

2101 (Keller) 1.Ld8! droht 2.a5 [A] (3.Le7#) Kd6 [a] 3.Lf6 [B] (4.c5#) Kc5 [b] 4.Le7#, 1. .. Kd6 2.Lf6 [B] (3.c5#) Kc5 [b] 3.a5 [A] (4.Le7#) Kd6 [a] 4.c5#. Ein Weihnachtsbaum mit thematischem Inhalt (reziproke Züge zwischen [unausführbarer] Drohung und Lösung bei Weiß und Schwarz), was bei Symbolproblemen eher selten ist. Deshalb ragt dieser Festtagsgruß aus der großen Masse heraus (der Autor beglückte im Vorjahr diverse Problemspalten mit Weihnachtsbäumen). „Ein hübscher Baum mit einer moderaten Lösung.“ [Bert Kölske] „☺“ [Berthold Leibe] „Netter Weihnachtsgruß.“ [Karl-Heinz Siehndel] „Ein etwas dürrer Weihnachtsbaum mit nur einer schwarzen Kugel wird im Zugzwang ‚ermattet‘!“ [Joachim Benn] „Eine schlichte Tanne.“ [Claus Grupen]
(Gunter Jordan (Jena, Germany): Lösungen aus Gaudium 235, in: Gaudium, Ausgabe 237, 2021-02-28)
Comments:
  • Author – Kurt Keller (Ulm, Germany)
  • Gaudium (original problem) (235)
  • Gaudium (solution text) (237)
  • Yet Another Chess Problem Database (...)

Henrik Juel: C+ Popeye 4.61 (2021-01-02)
comment
Keywords: Symbol problem (Christmas tree), Rex solus, Symmetrical position, Asymmetrical solution, Reversal 1 (AaBb-BbAa), Stalemate dissolution, Flight-giving key, Switchback (k)
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 2K5/2B5/8/1PkP4/P1P1P3/P3P3/8/2R5
Input: Kurt Keller, 2021-01-02
Last update: Kurt Keller, 2021-03-04 more...
19 - P1389460
Petrasin Petrasinovic
Sahmat besteciliyi 22, p. 12, 2020
Azerbaidschanische Kommisssion für Schachkomposition - 50
3. Lob
P1389460
(6+1) C+
#4
1. Lb7? Kf6!
1. Db6? Kxe4!

1. Se1! Kf4 2. Dc3 Kxe4 3. Le6 Kf4 4. Dd4#
1. ... Kf6 2. Df8+ Ke5 3. Sc2 Kxe4 4. Df5#
2. ... Kg6 3. Lf5#
play all play one stop play next play all
more ...
comment
Keywords: Miniature, Rex solus (s), Flight-giving key, Switchback (k), Model mate (Gnaden-)
Genre: n#
Computer test: Popeye 4.61
FEN: 2B5/8/8/3Pk3/1Q2P2K/8/6N1/8
Input: Rainer Staudte, 2021-05-11
Last update: Alfred Pfeiffer, 2021-08-12 more...
20 - P1389601
Kurt Keller
2932 ChessStar Static2021 11/05/2021
P1389601
(3+3) C+
#7
1. Kf3? Kf1 2. Sg2 Kg1 3. S6f4 Kf1 4. Se2 Tg1 5. Sg3#
2. ... Tg1!

1. Sh5! Kg2 2. Sh4+? Kg1 3. Kf3 Kf1 4. Sg2 transposes to main line
2. ... Kh3!
2. Sgf4+ Kg1 3. Kf3 Kf1 4. Sg2 Kg1 5. Sg3? stalemate!
5. Shf4 Kf1 6. Se2 Tg1 7. Sg3#
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Comments:
SCHRECKE: vergleiche: P1124561 (2021-05-15)
comment
Keywords: Miniature (only 6 pieces), Exchange of roles (SS), Stalemate dissolution, Flight-giving key, Stalemate avoidance, Pendulum (k), Switchback (Sk), Selfblock, Square vacation (e2f4g1), Line closing (g1-g3)
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 8/8/6N1/8/5N2/8/4K2p/6kr
Input: Kurt Keller, 2021-05-15
Last update: Kurt Keller, 2021-05-15 more...
21 - P1392905
Kurt Keller
Mihail Croitor

1592 Troll 18, p. 28, 18/08/2021
P1392905
(10+7) C+
#12
1. Tc4! Kd5 2. Kg4 Kd6 3. Kf3 Kd5 4. Ke2 Kd6 5. Kd1 Kd5 6. Kc2 Kd6 7. Kc3 Kd5 8. Kb4 Kd6 9. Kb5 Kd5 10. Txa4 Kd6 11. Ta8 Kd5 12. Td8#
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Aufgabe Nr. 1592 (Keller/Krojtor [Kurt Keller (Ulm, Germany) / Mihail Vasil'evich Krojtor (Moldova)]): 1. Tc4! Kd5 2. Kg4 Kd6 3. Kf3 Kd5 4. Ke2 Kd6 5. Kd1 Kd5 6. Kc2 Kd6 7. Kc3 Kd5 8. Kb4 Kd6 9. Kb5 Kd5 10. T:a4 Kd6 11. Ta8 Kd5 12. Td8 matt. (4 Punkte)
(Udo Degener, Grandmaster of Chess Composition (Potsdam, Germany), Unsere Schachseite. Lösung aus TROLL 18, in: TROLL 21/2021, p. 28, 2021-09-29 [2021TRO.pdf])
Henrik Juel: The keywords almost give away the solution, which is also found by Popeye 4.61 in a few minutes and tested C+ in 27 minutes (2021-09-06)
comment
Keywords: Stalemate dissolution, Flight-giving key, Annihilation, Pendulum (black k), Switchback (black k), Königswanderung
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB), Gustav 4.1 d
FEN: 5b2/2p1p1p1/2PkPpP1/2R2P1K/p2P4/P2P4/3P4/8
Input: Kurt Keller, 2021-08-18
Last update: Kurt Keller, 2021-12-14 more...
22 - P1394730
Kurt Keller
2969 ChessStar 20/10/2021
Rasim-100MT
Judge: Ferhat Karmil

P1394730
(8+9) C+
#10
b) wSa6>a4
a) 1. La6? illegal!
1. Lc8! Ka8 2. Sb4 Ka7 3. Sc2 Ka8 4. Sxd4 La7 5. Se6 Lb8 6. Sf8 Ka7 7. Sxg6 Ka8 8. Lb7+ Ka7 9. Se7 g6 10. Sc8#
6. ... La7? 7. Lb7+ Kb8 8. Sd7#
5. ... Kb8 6. Ld7 Ka8 7. Sxc7+ Kb8 8. Sa6+ Ka8 9. c7 Lb8 10. cxb8=D#
9. ... Kb7 10. c8=D#
4. ... Ka7 5. Se6 ... (transposes into lines above)
2. ... La7? 3. Lb7+ Kb8 4. Sa6#

b) 1. Lc8?
1. La6! Ka8 2. Sb2 La7 3. Sc4 Lb8 4. Sd2 La7 5. Sf3 Lb8 6. Sh4 La7 7. Sxg6 Lb8 8. Lb7+ Ka7 9. Se7 g6 10. Sc8#
7. ... Kb8 8. Sf8 Ka8 9. Lb7+ Kb8 10. Sd7#
8. ... g6 9. Sd7+ Ka8 10. Lb7#
6. ... Ka7 7. Sxg6 ...
5. ... Kb8 6. Sh4 ...
4. ... Ka7 5. Sf3 ...
3. ... Kb8? 4. Se5 dxe5 5. fxe5 Ka8 6. Lb7+ Kb8 7. e6 f4 8. e7 f3 9. e8=D#
5. ... f4 6. e6 Ka8 7. Lb7+ ...
6. ... f3 7. e7 Ka8 8. Lb7+ ...
7. ... f2? 8. e8=D#
4. ... Ka8? 5. Lb7+ Kb8 6. Sd7#
2. ... Ka7 3. Sc4 ...
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Comments:
more ...
comment
Keywords: Twin, Model mate, Switchback, Pendulum, Selfblock, Annihilation, Springerwanderung, Stalemate dissolution, Flight-giving key, Stalemate avoidance, Corner mate
Genre: n#
Computer test: Gustav 4.1 d
FEN: 1b6/kBp3p1/NpPp2p1/1P1P1pP1/3p1P2/3K4/8/8
Input: Kurt Keller, 2021-10-20
Last update: Kurt Keller, 2022-04-03 more...
23 - P1404662
Claus Grupen
Mitteilungsblatt der SG Kiel-Ost 12/1972
P1404662
(8+2)
#3
1. c5! axb5 2. Sc7 b4+ 3. cxb4#
1. ... Kxb5 2. Le1 Ka5 3. c4#
2. ... a5 3. Sc7#
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Cook: Dual: 2. c4+ Ka5 3. Le1#
Henrik Juel: The dual appears after 1... Kxb5 (2.Le1,c4+) (2022-09-25)
comment
Keywords: discovered checkmate, Batteriematt diagonal, Pawn mate, Flight-giving key, Switchback (k), Minimal (b)
Genre: 3#
FEN: N7/8/p7/kP1B4/2PP4/K1P5/5B2/8
Input: Gunter Jordan, 2022-09-25
Last update: Gunter Jordan, 2022-09-25 more...
24 - P1404821
Jörgen Möller
Deutsches Wochenschach 1909
P1404821
(11+5) C+
#3
1. Dc2? cxb4 2. Lb3 Kxg4! 1. Dd3? c4 2. Lxc4 Kxg4!

1. Db5! cxb4 2. Lb3 Kxg4 3. Ld1#
1. ... c4 2. Lxc4 Kxg4 3. Le2#

1. ... Kxg4 2. De2+ Kxf5 3. Dh5#
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more ...
comment
Keywords: Flight-giving key, Knight sacrifice, Switchback (wD), ambush
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/8/4PpP1/2pB1P1k/1P3PNp/4P2p/K3Q2P/8
Reprints: 186 Versunkene Schätze , p. 84, 1998
Input: Dieter Berlin, 2022-10-02
Last update: Dieter Berlin, 2022-10-03 more...
25 - P1406124
Alois Johandl
Themes-64 1967
1. Preis
P1406124
(6+11) C+
#7
1. Sh8! Kxe5 2. Sf7+ Kf4 3. Lxf2 Sc4 4. Th4+ Kf3 5. Se5+ Sxe5 6. Th3+ Kf4 7. Le3#
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more ...
comment
Keywords: Flight-giving key, Switchback (S), Knight sacrifice, Blocknutzung, Pure mate, Model mate, Schlüssel = Eckzug, Rücknahme Schlüsselzug
Genre: n#
Computer test: SCHRECKE: Gustav 4.2b
FEN: 8/5N2/4pN1p/n3Pp2/1p3k1B/1p5R/qp3p2/2n2K2
Reprints: 1760 Beispiele zur Ideengeschichte des Schachproblems , p. 356, 1982
Input: Dieter Berlin, 2022-11-24
Last update: Dieter Berlin, 2022-11-24 more...
26 - P1407780
Claus Grupen
3093 Kieler Nachrichten 06/1991
P1407780
(8+1) C+
#6
1. Le2! Ke6 2. Lb5 Ke5 3. Lf1 Ke6 4. Lh3+ Ke5 5. Kg4 Ke6 6. Kf4#
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more ...
comment
Keywords: Keirans theme, discovered checkmate, Battery creation, Batteriematt diagonal, Flight-giving key, Königsbatterie, Stalemate dissolution, Periführung, Rex solus (s), Switchback (k)
Genre: n#
Computer test: Gustav 4.1 a
FEN: 6N1/8/6P1/2P1k3/4P1B1/2P3K1/5N2/8
Input: Gunter Jordan, 2023-02-13
Last update: Gunter Jordan, 2023-02-14 more...
27 - P1409739
Stephen Rothwell
3310 Kieler Nachrichten 07/10/1995
P1409739
(6+5) C+
#2
1. Db8! c3 2. Db4#
1. ... Kc5 2. Db6#
1. ... Ke4 2. Df4#
1. ... Kc3 2. Db2#
1. ... f5 2. De5#
play all play one stop play next play all
more ...
comment
Keywords: Flight-giving key (doppelt), Switchback, Y-flight
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/4N3/p4pN1/P7/1Qpk4/4p3/4P3/K7
Reprints: 465 Problemschach-Jahrbuch 1995 D , p. 184, 1995
Input: Dieter Berlin, 2023-05-16
Last update: Dieter Berlin, 2023-05-16 more...
28 - P1411059
Vasily Murashov
7001 Zadachi i etyudy 89 27/06/2023
P1411059
(5+1)
#6
1. Ld8! Kd6 2. Kd4 Ke6 3. Se3 Kd6 4. Sf5+ Ke6 5. Sg7+ Kd6 6. c5#
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Henrik Juel: C+ Popeye 4.61 (2023-07-22)
comment
Keywords: Rex solus (s), Flight-giving key, Pawn mate, Switchback (k), Ideal mate
Genre: n#
FEN: 8/2B5/8/2k1N3/2P5/2K5/2N5/8
Input: Rainer Staudte, 2023-07-22
Last update: Gunter Jordan, 2023-07-23 more...
29 - P1413202
Claus Grupen
2011/10 Schach in Schleswig-Holstein 03/2011
P1413202
(4+4) C+
#5
1. Sh7! Kg4 2. Ke4 Kh4! 3. Sd4 Kg4 Sf3 h4 5. Sf6#
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Stefan Felber: Kein Modellmatt! (2023-10-27)
Gerald Ettl: Warum soll das kein Mustermatt sein? Fuer mich ist es eins. (2023-10-28)
SCHRECKE: Das Feld h4 ist geblockt+gedeckt! (2023-10-28)
Gerald Ettl: geblockt macht nichts aus, nur wenn es 2-mal von Weiss gedeckt ist, dann wuerde es was ausmachen. (2023-10-29)
SCHRECKE: Die Definition des M. lautet: "Mattbild, bei dem alle weissen Figuren ... mitwirken und jedes Feld um den schwarzen König nur einfach gedeckt oder geblockt ist."
Jedes Feld darf also nur aus einem (!) Grund für den sK unzugänglich sein und das ist nicht der Fall. Hier liegt definitiv kein M. vor ... (2023-10-30)
Gerald Ettl: Danke Schrecke, das war mir auch neu. Ausserdem habe ich nochmal bei ein paar Schachfreunden nachgefragt, die sind auch der Meinung, dass es kein Mustermatt ist. (2023-10-30)
Henrik Juel: for what it may be worth: I also think that there is no model mate here (2023-10-30)
comment
Keywords: Switchback (Sk), Flight-giving key, Model mate, Stalemate dissolution, Rücknahme Schlüsselzug
Genre: n#
Computer test: Gustav 4.1 a
FEN: 8/8/4NN1p/4K2p/7k/7p/7P/8
Input: Gunter Jordan, 2023-10-27
Last update: Gunter Jordan, 2023-10-27 more...
30 - P1413664
Andrzej Szypulski
Bogusz Piliczewski

M1806 StrateGems 100 10/2022
P1413664
(4+3)
#4
1. Dg3? droht 2. Dd3+ Ke5 3. De4#
2. ... Kc5 3. Dd6#
2. Kd6 droht 3. De5#,Dd3#
1. ... Sf6 2. Kxf6 droht 3. De5#
2. ... Kc5 3. Dc7+ Kd4 4. De5#
1. ... Sg5!

1. Ld5! droht 2. Sb3+ Kc3 3. Dd2#
2. ... Ke3 3. Df3#,Dd2#
2. ... Ke5 3. De4#
2. ... Kd3 3. Dd2#
1. ... Ke3 2. Sf1+ Kf4 3. Dg3+ Kf5 4. Se3#
2. ... Kd4 3. Kd6 droht 4. Dd2#
2. ... Kd3 3. Dd2#
1. ... Kc5 2. Sb3+ Kb6 3. La8 droht 4. Db7#
3. ... Kb5 4. Dc6#
2. ... Kb5 3. Da2 droht 4. Da5#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-11-25)
comment
Keywords: Bahnung, Switchback, Flight-giving key
Genre: n#
FEN: 8/4K2n/8/8/1pBk4/8/3N2Q1/8
Input: Rainer Staudte, 2023-11-25
Last update: Rainer Staudte, 2023-11-25 more...
31 - P1413665
Andrzej Szypulski
Bogusz Piliczewski

M1805 StrateGems 100 10/2022
P1413665
(6+1)
#4
1. Tb2! Kc3 2. Sc6 Kd3 3. Sb6+ Ke4,Ke3 4. Te2#
3. ... Kc3 4. Sa4#
1. ... Kc5 2. Sc6 Kd5 3. Te2 ... 4. Te5#
1. ... Kd3 2. Td2+ Ke4 3. Lc6#
2. ... Kc3 3. Sd5+ Kb3 4. Tb2#
1. ... Ke4 2. Sc6 droht 3. Se3 Kxe3 4. Te2#
3. Sb6 ... 4. Te2#
2. ... Kd3 3. Sb6+ Ke4,Ke3 4. Te2#
3. ... Kc3 4. Sa4#
2. ... Kd5 3. Te2 ... 4. Te5#
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Henrik Juel: C+ Popeye 4.61 (2023-11-25)
comment
Keywords: Switchback, Koshakin Theme, Flight-giving key
Genre: n#
FEN: 8/4N3/8/1B3P2/2Nk2K1/8/4R3/8
Input: Rainer Staudte, 2023-11-25
Last update: Rainer Staudte, 2023-11-25 more...
32 - P1414363
Paul Wenman
87 The Two-move Chess Problem: Trad. & Dev. , p. 24, 1945
P1414363
(6+3) C+
#2
1. Sxf3! Ke6 2. Sg5#
1. ... Kc4 2. Sd2#
1. ... Kc6 2. Se5#
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more ...
comment
Keywords: Capture key, double-check mate, Switchback, Flight-giving key
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 8/5R2/3p4/3k2N1/3P4/1R2Kp2/8/7B
Input: Dieter Berlin, 2024-01-07
Last update: Dieter Berlin, 2024-01-07 more...
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