Die Schwalbe

9 problem(s) found in 5641 milliseconds (displaying 9 problem(s)). [COMMENTDATE>=20200919 AND NOT S='Schach' AND K='Opfer schwarzer Figuen'] [download as LaTeX]

1 - P1117080
Herbert Hultberg
14082 Tidskrift för Schack 10/1981
P1117080
(4+3) C+
#4
1. Td8 Sb5+ 2. Kb3 Sd4+ 3. Txd4 Kb1 4. Td1#
1. ... Sd5 2. Txd5 Kb1 3. Td1+ Kc2 4. Se3#
play all play one stop play next play all
C5c4
Henrik Juel: C+ Popeye 4.61 (2022-05-30)
comment
Keywords: Miniature Collection (0332048), Miniature, Sacrifice of black pieces
Genre: n#
Computer test: Popeye 4.61
FEN: 1R6/2n5/8/8/8/K7/1P3p2/k4N2
Input: Zuncke/Bruder, 2010-09-11
Last update: Dieter Berlin, 2022-05-30 more...
2 - P1262324
Wilfried Neef
50 Problem-Forum H 636, p. 17, 2012
P1262324
(2+11) C+
h#5
1. Tb4 Kxb4 2. Lc4 Kxc4 3. Dd5+ Kxd5 4. Le5 Kxe5 5. Tf6 Kxf6#
play all play one stop play next play all
Wilfried Neef: 2. ehrende Erwähnung (2022-11-25)
comment
Keywords: Sacrifice of black pieces, Opferhäufung
Genre: h#
Computer test: Popeye Windows-32Bit v4.55 (195 MB)
FEN: 8/8/5brp/2Rbq2k/p1r3pp/K6p/8/8
Input: Wilfried, 2013-02-11
Last update: Wilfried, 2013-02-11 more...
3 - P1337680
Rainer Kuhn
Springaren 141, p. 110, 09/2016
4. ehrende Erwähnung
Springaren Winter Tourney 2015-16
PR Kenneth Solja
P1337680
(2+13) C+
h#7
1. Le8 Lh1 2. Dg2+ Kxg2 3. Tf3 Kxf3 4. e4+ Kxe4 5. Td5 Kxd5 6. Lc6+ Kxc6 7. Sc7 Kxc7#
play all play one stop play next play all
Turnier-Thema: Aktive weiße oder/und schwarze Opfer.
Jakob Leck: cf. P1240915 or P1356948 (2022-12-28)
comment
Keywords: discovered checkmate, Battery creation, Batteriematt diagonal, Minimal, Sacrifice of black pieces, Opferhäufung
Genre: h#
FEN: k7/pq1r3p/n5b1/4p1pp/3pB2p/4r3/7K/8
Input: Gunter Jordan, 2017-08-14
Last update: Gunter Jordan, 2017-08-14 more...
4 - P1356948
Harald Grubert
Reinhardt Fiebig

Bulletin 2012
JT Tschumakow-70
3. Lob
P1356948
(2+10) C+
h#7
1. Ta1+ Lxa1 2. Db2+ Kxb2 3. c3+ Kxc3 4. Ld4+ Kxd4 5. e5+ Kxe5 6. Tf6 Kxf6 7. Sf7 Kxf7#
play all play one stop play next play all
Jakob Leck: cf. P1240915 (2022-12-28)
comment
Keywords: discovered checkmate, bi-coloured Bristol, Battery creation, Batteriematt diagonal, Minimal, Sacrifice of black pieces, Sacrifice key, Checking key, Schlüssel = Eckzug
Genre: h#
FEN: 7k/6qp/r3pB1n/8/1np5/4b3/r7/1K6
Input: Gunter Jordan, 2018-10-28
Last update: Gunter Jordan, 2018-10-28 more...
5 - P1380563
Kurt Keller
1649 Augsburger Allgemeine 02/10/2020
P1380563
(10+4) C+
#5
1. d6! droht 2. Dc6#
1. ... a2 2. Db7 droht 3. Db3#
2. ... a1=S 3. Db1 droht 4. Dxa1 La3 5. Dd1#
3. ... Lb2 4. Dxb2 droht 5. Da2#
4. ... Sc2 5. Db3#
play all play one stop play next play all
Aufgabe Nr. 1649 (Fünfzüger
Keller): 1.d6! (droht 2.Dc6#)
1.-,a2 2.Db7 (droht 3.Db3#)
2.-,a1S 3.Db1 (droht 4.Dxa1,La3 5.Dd1#)
3.-,Lb2, 4.Dxb2 (droht 5.Da2#)
4.-,Sc2 5.Db3#.
Harmloser Löwenkäfig!

(Heinz Däubler (Amberg, Germany): Schach, in: Augsburger Allgemeine, 2020-10-17)
Comments:
  • Author – Kurt Keller (Ulm, Germany)
  • Yet Another Chess Problem Database (520193)

Mirko Degenkolbe: Wenn man auf den Käfig verzichtet (der Schlüssel spielt sich ja quasi "von selbst"), kann man den Inhalt auf das Miniaturformat herunterbrechen:
Kc4, Bb6
Ka4, Lc1, Ba3, Ba5, Bc7.
#5
In diesem weißen Minimal gibt es jetzt eine zusätzliche Verführung und ein zusätzliches Matt im Lösungsspiel.
Außerdem ist der Mattdual aus der Originalversion nicht mehr vorhanden. (2020-10-03)
Kurt Keller: Ein interessantes Problem ohne den Käfig zum Vergleich! Das Minimal enthält nicht mehr "Verführungen" als das Käfigproblem. Die einzige "Verführung" des Minimals scheitert an 6! Verteidigungszügen. Das zusätzliche Matt ist nur vierzügig. Das Ende der vollzügigen Lösung beider Probleme ist gleich. Sieht man von der Teilparade jeweils ab, gibt es keinen Mattdual. (2020-10-04)
more ...
comment
Keywords: Skittles, Skittles setup (lion cage), Line opening, Promotion, under-promotion, Sacrifice of black pieces, Active sacrifice
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 8/8/8/p2PPP2/k1KPQP2/p2PPP2/8/2b5
Input: Kurt Keller, 2020-10-03
Last update: Kurt Keller, 2020-10-17 more...
6 - P1386957
Oleksandr Spitsyn
Chorno-bili stezhyny 4/53, p. 32, 10-12/2016
4. ehrende Erwähnung
JT Waleri Stankewitsch-85
PR Alexandr Semenenko
P1386957
(2+8) C+
h#5
1. Tc3 bxc3 2. Dd4 cxd4 3. Se5+ dxe5 4. Tf6+ exf6 5. Lg8 fxg7#
play all play one stop play next play all
Yuri Bilokin: more economical bRf7-b4(-bPb4), bQd5-h4, bNc4-c6 7k/6b1/2n3K1/8/1r5q/1r6/bP6/8 (2+7) h#5
1.Rc3 bxc3 2.Rd4 cxd4 3.Se5+ dxe5 4.Qf6+ exf6 5.Bg8 fxg7# (IM)
Active sacrifice (black) × 4
Ideal mate (2022-12-01)
more ...
comment
Keywords: Corner mate, Line opening, Minimal (B), Model mate, Sacrifice of black pieces, Selfblock
Genre: h#
Computer test: C+, Gustav 4.1d, Brute Force
FEN: 7k/5rb1/6K1/3q4/1pn5/1r6/bP6/8
Input: Gunter Jordan, 2021-03-03
Last update: A.Buchanan, 2022-12-01 more...
7 - P1402955
Kurt Keller
3675 ChessStar 23/07/2022
P1402955
(2+5) C+
h#5
1. a4 bxa4+ 2. Kc4 a5 3. Kb5 a6 4. Ka5 a7 5. b5 a8=D,T#
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Comments:
SCHRECKE: Umwandlungsdual (a8T#) im Hilfsmatt ist nicht jedermanns Sache - meine auch nicht! (2022-07-23)
Henrik Juel: so the problem is not C+... (2022-07-23)
Kurt Keller: see keyword "tolerated dual promotion":
"Sometimes, the mating move is a promotion, and both D/T would mate. Similarly, sometimes D/L would both work. This is a tolerated dual under Article 13 of the Codex, because if it were not allowed, too many matrices would be invalid."
Article 13 (https://www.wfcc.ch/1999-2012/codex/):
"(2) Help-play compositions are unsound also if they are dualized, except that in the final move a promotion into different pieces having partially the same power (for example queen/rook or queen/bishop) may be tolerated [16]."
Therefore, the problem is sound (C+). (2022-07-23)
comment
Keywords: Symbol problem (cross), Kindergarten Problem, Minimal (B), Miniature, Symmetrical position, Asymmetrical solution, Sacrifice key, Sacrifice of black pieces (active), Active sacrifice, White correction (for Black), Selfblock, Switchback (k), Promotion in the mating move, Tolerated dual promotion (D/T)
Genre: h#
Computer test: Gustav 4.1 d
FEN: 8/1K6/1p6/pkp5/1p6/1P6/8/8
Input: Kurt Keller, 2022-07-23
Last update: Kurt Keller, 2022-10-28 more...
8 - P1403521
Christopher James Austin Jones
861 Problemskak 18 04-06/2012
1. ehrende Erwähnung
Hilfsmatts 2011-2012
PR Franz Pachl
P1403521
(7+14)
h#3
2.1...
1) 1. c4 f4+ 2. gxf4 exf4+ 3. Kd4 Txc4#
2) 1. Lg3 Td4 2. cxd4 exd4+ 3. Kf4 fxg3#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2022-08-06)
comment
Keywords: Sacrifice of black pieces (2 + 2), Sacrifice of white pieces (2), Zilahi (wBf2, wTa4)
Genre: h#
Computer test: Popeye Windows-64Bit v4.87 (11 GB)
FEN: 8/3r4/1p6/2pnkbp1/R3p1pb/1P2P3/1p2PP1p/1n1K1N1r
Input: Björn Enemark, 2022-08-06
Last update: Gunter Jordan, 2022-08-06 more...
9 - P1411357
Carlos de la Fe Dahlin
15167 Springaren 164 12/2022
P1411357
(2+6) C+
h#5
2.1...
1) 1. Tf5+ Kxf5 2. Te6 Kxe6 3. Ld7+ Kxd7 4. Lc7 Kxc7 5. Da2 Txa2#
2) 1. Lb6 Tc5 2. Tb2 Kf6 3. Kb8 Ke7 4. La7 Kd8 5. Tb7 Tc8#
play all play one stop play next play all
Yuri Bilokin: slip of the pen wKg5 8/k7/r7/b5K1/b7/q7/2R2r2/8 (2+6) (2023-08-04)
comment
Keywords: Aristocrat, Ideal mate (in 1), Minimal (T), Sacrifice of black pieces (in 1), Checking key (in 1), Selfblock (in 2)
Genre: h#
FEN: 8/k7/r5K1/b7/b7/q7/2R2r2/8
Input: Gunter Jordan, 2023-07-28
Last update: Gunter Jordan, 2023-07-28 more...
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The problems of this query have been registered by the following contributors:

Zuncke/Bruder (1)
Wilfried (1)
Gunter Jordan (4)
Kurt Keller (2)
Björn Enemark (1)