Die Schwalbe

35 problem(s) found in 4236 milliseconds (displaying 35 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT S='Chess Enigma' AND A='Rotenberg, Jacques'] [download as LaTeX]

1 - P0003899
Jacques Rotenberg
diagrammes 41 09-10/1979
P0003899
(2+3)
shc#5
1. Kf8 2. Ke8 3. 0-0 4. Kh8 5. Tg8 Sf7#
play all play one stop play next play all
Version Bernd Schwarzkopf
Henrik Juel: Not 1.Kf8 2.Tg8 3.Tg7 4.Kg8 5.Kh8 6.Tg8, one move too many (2021-01-18)
comment
Keywords: Seriesmover, Consequent, Castling
Genre: Retro, Fairies
FEN: 6kr/7p/7K/6N1/8/8/8/8
Input: Gerd Wilts, 1995-06-03
Last update: James Malcom, 2021-09-14 more...
2 - P0006467
Michel Caillaud
Jacques Rotenberg

3927 Problemkiste 102, p. 168, 12/1995
P0006467
(14+15)
BP in 6.0
N statt S in der PAS
wSU,sSU=Nachtreiter
a) 1. Nxe7 Nxe2 2. Nb1 Nxc1 3. Df3 Nca5 4. Ke2 Ngc6+ 5. Kd3 Nb8 6. Ke4 Ng8+
play all play one stop play next play all
paul: Verified by Jacobi with this input:

stip dia 6
forsyth rnbqkbnr/pppp1ppp/8/8/4K3/5Q2/PPPP1PPP/RN3BNR
cond cavaliermaj (2023-06-16)
more ...
comment
Keywords: Unique Proof Game, Cavalier majeur
Pieces: su = Nightrider (N)
Genre: Retro, Fairies
FEN: r*2nbqkb*2nr/pppp1ppp/8/8/4K3/5Q2/PPPP1PPP/R*2N3B*2NR
Input: Gerd Wilts, 1996-06-16
Last update: A.Buchanan, 2021-02-19 more...
3 - P1045248
Jacques Rotenberg
diagrammes 1978
2. Preis
P1045248
(13+6)
#2

BS Problemid: 30256
Authors: Rotenberg, Jacques
Sources: Dutch Solving Championship 2001
Years: 1978
J. Rotenberg: 1.Cé7?,Cb4? blocus
mais 1…C×h2!

1.Td7? blocus
mais 1…C×é1!

1.Cd3? blocus
mais 1…C×f7!

1.Fg1? blocus
mais 1…C×ç6!

1.Td2! blocus
1…R×é3 2.Té2‡
1…Cé~ 2.D×f3‡
1…Cf~ 2.D×é5‡

"simple" Zappas twice (2007-03-02)
SCHRECKE: C+, popeye 4.87 (2022-12-31)
Jacques Rotenberg: "simple" Zappas :
a square around the black king (a flght square) is controlled three times by white, however white cannot remove any of these controls (2024-02-01)
comment
Keywords: Brian Stephenson Collection (30256)
Genre: 2#
FEN: 8/2K2R2/1pN1PQp1/1B1Pn1p1/4k1P1/4Pn2/2P1R2B/4N3
Input: Brian Stephenson, 2004-08-12
4 - P1090925
Jacques Rotenberg
128 Phénix 10/1988
1. ehrende Erwähnung
P1090925
(6+2) C+
s#8*
* 1. ... Lb7 2. Dc6 Lxc6#
1. Sb8! Lb7 2. Sd7 Lc6 3. Sf8 Lb7 4. Dc6 Kb8 5. Se6 Ka8 6. Sc7+ Kb8 7. Sa6+ Ka8 8. Ta1 Lxc6#
play all play one stop play next play all
Frank Müller: läßt sich mit wDf3 und sLe4 um zwei Züge erweitern
Hier liegt Keine Vorgängerschaft vor, denn es wird ein interessanter 6-zügiger Rundlauf des wS gezeigt!
paul: Anticipated by P1186964 (Schildberg) (2022-09-14)
Jacques Rotenberg: not at all anticipated !!
the solution is completely different (2022-12-04)
Jacques Rotenberg: the P1186964 itself is anticipated! (2022-12-04)
Jacques Rotenberg: about P1186964 see P1186601 (2022-12-04)
Iwan Soroka: @paul. P1186964 is kein Vorgänger zu P1090925. Was genau ist anticipated? (2022-12-04)
more ...
comment
Keywords: Minimal (l), Corner mate, Model mate, Switchback (Skl), Tempo Loss, Round Trip (S-6)
Genre: s#
Computer test: I. Soroka: Gustav 3.2 d
FEN: k7/8/N1b5/3Q4/8/8/7P/1R4BK
Input: Frank Müller, 2009-09-09
Last update: Gunter Jordan, 2022-12-05 more...
5 - P1193688
Jacques Rotenberg
Guy Sobrecases

H3218 The Problemist 11/2008
P1193688
(2+13) C+
h#4
0.4.1...
1) 1. ... c8=T+ 2. Kd7 Te8 3. Kc6 Txe7 4. Kc5 Tc7#
2) 1. ... c8=S 2. Sc5 Kb6 3. Tf6 Kc7 4. Tf8 Sxd6#
3) 1. ... c8=L 2. Df6 Kb6 3. Df8 Kc7 4. Lf7 Ld7#
4) 1. ... Kb5 2. Lf7 Ka5 3. Sg8 Kb5 4. Te7 c8=D#
play all play one stop play next play all
Yuri Bilokin: There is a shorter way h#3 1.Bf7 Kb5 2.Sg8 Ka5 3.Re7 c8=Q# (MM) (2021-11-28)
Olaf Jenkner: The stipulation is White to play (2021-11-28)
A.Buchanan: set play can form part of a h#, but it’s certainly not a mandatory consideration, and here only exists because of the tempo play in solution 4. In no sense does set play affect soundness of a helpmate. I agree the 0.4.1 notation is confusing, particularly when the problem *does* feature set play, and try to avoid it whenever possible (2021-11-29)
comment

Genre: h#
Computer test: Popeye Windows-32Bit v4.51 (100000 KB)
FEN: 4k1b1/1pP1n1pp/3pr1p1/K2p1p2/3qn3/8/8/8
Input: hpr, 2011-04-27
Last update: hpr, 2011-04-27 more...
6 - P1234298
Jacques Rotenberg
002 Problemiste 01/2012
P1234298
(2+5)
#11
1. Kb6 Ld5 2. Te2 Lc6 3. Tf2 Lf3 4. Kc7 Ld5 5. Tf4 Lb3 6. Tf1 Ld1 7. Tf5 Sb3 8. Kb6 Sg6 9. Td5 Se7 10. Td8+ Sc8+ 11. Txc8#
6. ... Sc2 7. Tf5 Ld5 8. Txd5 usw.
5. ... Lc6? 6. Kb6 Sg6 7. Td4 usw.
3. ... Sg6 4. Td2 Ld5 5. Txd5 usw.
2. ... Lf7? 3. Th2 Lh5 4. Td2 Sf7 5. Kc7 Sc2 6. txc2 Sd6 7. Ta2#
play all play one stop play next play all
Anton Baumann: C+ Gustav 4.1d (2020-11-27)
comment
Keywords: Minimal
Genre: n#
FEN: k6n/2K2b2/8/8/6p1/8/3R4/n7
Input: Frank Müller, 2012-03-11
Last update: Frank Müller, 2012-05-26 more...
7 - P1257885
Guy Sobrecases
Jacques Rotenberg

H826 Probleemblad , p. 27, 01-03/2009
Probleemblad gewidmet
P1257885
(2+12) C+
h#4
2.1...
1) 1. Lh7 g8=T 2. Dg7 Th8 3. Kg6 Txh7 4. Kg5 Txg7#
2) 1. Ke7 g8=D 2. Le8 Dh8 3. Kf7 Df8+ 4. Kg6 Dg8#
play all play one stop play next play all
Laut Henrik Juel gab es im Originalabdruck keine Widmung.
Mario Richter: Illegales Schach durch wBg7. (2013-01-17)
Henrik Juel: I believe the black king should be moved to f7, which renders a nicer P, and makes the problem C+ by Popeye
1.Lh7 g8=T 2.Dg7 Th8 3.Kg6 Txh7 4.Kg5 Txg7#
1.Ke7 g8=D 2.Le8 Dh8 3.Kf7 Df8+ 4.Kg6 Dg8# (2013-01-17)
Henrik Juel: The diagram in Probleemblad nr. 1, Jan.-Mar. 2009, p. 27 has sKf7, not f8.
The magazine does not mention a dedication to Probleemblad; the problem could also honour Peter van den Heuvel, who stepped down as helpmate editor at the end of 2008, but no dedication is included (2013-01-17)
Yuri Bilokin: Version: in view of the presence h#3.5 1...g8=R 2.Bh7 Rh8 3.Kg6 Rxh7 4.Kg5 Rg7# only two endings can be saved: -bQg4 8/5kP1/5pbp/5p1r/5r1b/5pp1/5p2/5K2 (2+11) h#4*
1...g8=R 2.Bh7 Rh8 3.Kg6 Rxh7 4.Kg5 Rg7# (MM)
1.Ke7 g8=Q 2.Be8 Qh8 3.Kf7 Qf8+ 4.Kg6 Qg8# (MM) (2021-11-28)
comment
Keywords: Character problem (P), Illegal position, Minimal
Genre: h#
Computer test: Popeye Windows-32Bit v4.51 (100000 KB)
FEN: 8/5kP1/5pbp/5p1r/5rqb/5pp1/5p2/5K2
Input: hpr, 2012-12-29
Last update: Olaf Jenkner, 2021-11-28 more...
8 - P1257896
Guy Sobrecases
Jacques Rotenberg

11319 Springaren , p. 79, 06/2008
Lob
P1257896
(3+4) C+
h#5
0.2.1...
1) 1. ... Ld3 2. Ka3 Kb5 3. Kb3 Lb1 4. Ld3+ Ka5 5. Kc4 La2#
2) 1. ... Lc2+ 2. Ka5 Kb3 3. Kb5 Ka3 4. Kc4 Ka4 5. Ld3 Lb3#
play all play one stop play next play all
Yuri Bilokin: you can see 1.Ka3 Kb5 2.Kb3 Ka5 3.Kc4 Ka4 4.Bd3 Ba2#
1.Ka5 Kb3 2.Kb5 Ka3 3.Kc4 Ka4 4.Bd3 Ba2#
1.Ka3 Kb5 2.Bd3+ Kb6 3.Kb3 Ka5 4.Kc4 Ba2# (2023-01-02)
comment

Genre: h#
Computer test: Popeye Windows-32Bit v4.51 (100000 KB)
FEN: 8/8/8/2p5/k1Kpb3/8/3P4/1B6
Input: hpr, 2012-12-29
Last update: Felber, Volker, 2013-07-01 more...
9 - P1280536
Jacques Rotenberg
22 Die Schwalbe 263, p. 240, 10/2013
1. ehrende Erwähnung
Rainer-Ehlers-Gedenkturnier
208. Thematurnier
P1280536
(11+12)
#15
1. Tc5+! Kd4 2. Tcxf5+ Kc4 3. Tc5+ Kd4 4. Txc2+ Kd5 5. Tc5+ Kd4 6. Txc1+ Kd5 7. Tc5+ Kd4 8. Tc2+ Kd5 9. Td3+ Tdxd3 10. Tc5+ Kd4 11. Tg5+ Kc4 12. Se3+ Txe3 13. Tc5+ Kd4 14. Te5+ Kc4 15. Sd6#
9. ... Taxd3 10. Tc5+ Kd4 11. Te5+ Kc4 12. Sd6+ Txd6 13. Tc5+ Kd4 14. Tg5+ Kc4 15. Se3#
2. ... Ke4 3. T5f4+ Kd5 4. Le4+ Kc4 5. Ld3+ Kd5 6. Td4#
play all play one stop play next play all
Jacques Rotenberg: .

2...Ke4 2.T5f4+ Kd5 3.Le4+ Kc4 4.Ld3+ Kd5 5.Lc4#

Plachutta, closing of black lines (2017-07-18)
Sally: Die offensichtlichen Verteidigungen im Satz:
1. Ta2#/Sab3+/Scb3+,
weisen mit dem Zaunpfahl auf eine Schachserie hin. Trotzdem ist das Problem wahrscheinlich nicht so leicht zu lösen.
Zunächst wird mit :
1. Tc5+ - Kd4, 2. Tcxf5+ - Kc4, die Linie h7 -d3 geöffnet.
(2.-Ke4, 3. T5f4+ Kd5, 4. Le4+-Kc4, 5. Ld3+-Kd5,6.Td4,Se3#
Weiter geht es mit :
3. Tc5+ - Kd4, 4. Txc2+!
was ungeschickterweise Lb1 einschaltet (Antiziehelement)
4. - Kd5, 5. Tc5+ - Kd4,
Aber der Sc1 stört und muss geschlagen werden.
6. Txc1+ - Kd5, Mit 7. Tc5+ - Kd4, 8. Tc2+;
wird dieses Manko behoben und die Verstellung nach :
8. - Kd5 mittels 9. Td3+ verwertet.
Die Nutzung der Plachutta-Verstellung erfordert als Zwischenplan reziproke Verstellungen der s. Dame h6 und des s. Läufers h2.
Diese folgen dann auf :
9. - Tdxd3, .... 15. Sd6# , bzw 9.- Taxd3, .... 15. Se3#.
Die Plachutta-Verstellungen in Verbindung mit dem Rehm-Mechanismus und die reziproken Verstellungen s. Linienfiguren sorgen für eine kraftvolle, ungewöhnliche Umsetzung des geforderten Themas. (2017-07-19)
Anton Baumann: C+ Gustav 4.1d (2020-12-19)
more ...
comment
Keywords: Plachutta
Genre: n#
FEN: 8/B4N1B/2P1p2q/nP2Rp2/1pk5/r4R2/PPp4b/Kbnr1N2
Input: Felber, Volker, 2013-11-18
Last update: Alfred Pfeiffer, 2017-07-18 more...
10 - P1298074
Jacques Rotenberg
Problemiste 2012
1st prize
P1298074
(10+16)
#11
1. Sfxe7+! exd5+ 2. Sxd5+ Sef6+,Shf6+ 3. Sdxf6+ d5+ 4. Sxd5+ Sf6+ 5. Sdxf6+ d5+ 6. Sxd5+ Te7+ 7. Sdxe7+ Ld5+ 8. Sxd5+ Te7+ 9. Sdxe7+ f5+ 10. Sxf5+ De7+ 11. Sfxe7#
play all play one stop play next play all
correction of P1298046
Henrik Juel: 21 consecutive checks; unfortunately, the position is illegal.
White never captured, while black pawns captured six times by axbxcxd, b7xc6, c7xd6, and h7xg6; but [Pf2] could not have been captured.
Nowadays it is rare to see an illegal prize winner, so the diagram may be incorrect (Pg2?) (2015-02-25)
Henrik Juel: Now I see that Jacques, in his comment to P1298046, gave this position, so my last sentence does not apply (2015-02-25)
Henrik Juel: The illegality is even 'worse' than I first thought, because [Pe2] could not have been captured either (2015-02-27)
James Malcom: I think it would be nice to have a legal version of this record. To do this, I propose we shorten the solution until a legal position is reached.

A #9 with 33B2N1/qrrp1ppn/1Ppp1np1/2QN2k1/3PKR2/8/b2p2P1/8 seems legal, no? (2021-02-06)
Anton Baumann: störender Dual in der Lösung: ... 7.Sde7+ f5+ 8.Sxf5+ Te7+ 9.Dxe7+,Lxe7+,Sxe7+ ...
Die Stellung wird legal mit schwarzer Umwandlungsfigur: d2=sT! Aber es bleibt der Dual in der Lösung.
Mögliche legale Stellung, ohne Dual in der Lösung: a7=sT, b7=sD, -sBc6, wBb6 nach c6 (10+15) #10
Lösung: 1.Sfe7+ exd5+ ... 7.Sde7+ Ld5+ 8.Dxd5+ f5+ 9.Sxf5+ De7+ 10.Sxe7# (2021-02-11)
comment
Keywords: Illegal position, Consecutive checks (21), Checking key, Construction task, Construction record, Move Length Record
Genre: n#
FEN: 3Bn1N1/qrrpbppn/1Pppp1p1/2QR1Nk1/3PKR2/8/b2p2P1/8
Input: A.Buchanan, 2015-02-25
Last update: James Malcom, 2021-02-07 more...
11 - P1381149
Jacques Rotenberg
Tehtäväniekka 2018
3. Preis
Syväniemi-50 JT
P1381149
(3+11) C+
h#5
0.3.1...
1) 1. ... Te1 2. Sgf2 Te7 3. Kg1 Txc7 4. Tg2 Te7 5. Lxh2 Te1#
2) 1. ... Tc3 2. Kh1 Txh3 3. Se3 Tf3 4. Tg1 h4 5. Sg2 Th3#
3) 1. ... Tc4 2. Shf2 Txg4+ 3. Kh3 Tf4 4. Tg2 Txf5 5. Sg4 Th5#
play all play one stop play next play all
Jacques Rotenberg: .
a lighter version was published soon after the judgement : p.91, Tehtäväniekka (juin 19)

Weiss : Kb7 Ta1 Bh2
Schwarz : Kg2 Tg6 Lb8 Sg4h3 Bc7d7c6f5

FEN : 1b6/1Kpp4/2p3r1/5p2/6n1/7n/6kP/R7 (2022-06-08)
comment
Keywords: Corner mate (in 2), Line opening, Model mate, Switchback, Selfblock
Genre: h#
FEN: 1b6/2p5/K1p3r1/1ppp1p2/6n1/7n/6kP/2R5
Reprints: A5556 Phénix 305, p. 11938, 03/2020
Input: Gunter Jordan, 2020-10-19
Last update: Gunter Jordan, 2020-10-19 more...
12 - P1382055
Jacques Rotenberg
Dominique Forlot

7852 Phénix 273-274 05-06/2017
P1382055
(3+3) C+
h#4
b) sLg7 statt sBg7
a) 1. Se5-f7 Tc6-c8 2. Kd5-e6 Tc8-a8 3. Ke6-e7 Lh2-b8 4. Ke7-f8 Lb8-d6#
b) 1. Kd5-d4 Tc6-c8 2. Se5-d3 Lh2-c7 3. Kd4-c3 Ka1-a2 4. Lg7-d4 Lc7-a5#
play all play one stop play next play all
Jacques Rotenberg: Dominique Forlot is co-author

Themes :
Indian, critical moves, echo model mates (2020-11-20)
comment
Keywords: Forsberg Twins
Genre: h#
Computer test: Popeye 4.83
FEN: 8/6p1/2R5/3kn3/8/8/7B/K7
Input: Marcin Banaszek, 2020-11-18
Last update: Alfred Pfeiffer, 2020-11-26 more...
13 - P1382303
James Malcom
Jacques Rotenberg

(10) MatPlus.net Forum 22/11/2020
P1382303
(8+5) C+
#2
1. Tb2+? Ka3!

1. Lf3! ... 2. Ld1#
play all play one stop play next play all
Inspired by P1182074

White releases stalemate as a #2, giving Black 20(!) moves. First record in a new task. See:
http://matplus.net/start.php?px=1606065655&app=forum&act=posts&fid=gen&tid=2586&pid=20040#n20040
Henrik Juel: No record, P1182074 is far better in terms of giving Black moves, 32
But this problem also a #2 (2020-11-22)
A.Buchanan: First record in a new task (2020-11-22)
James Malcom: Henrik, you misunderstood! The task is different from the 32! This is about Black release in the #2 form, not releae in the fairy form. (2020-11-22)
comment
Keywords: Stalemate dissolution
Genre: 2#
Computer test: Popeye 4.85
FEN: 8/8/NN1p4/1p1B4/1Pr5/1kb4R/3R4/1KB5
Input: James Malcom, 2020-11-22
Last update: James Malcom, 2021-06-22 more...
14 - P1382971
Jacques Rotenberg
Mat Plus 05/05/2019
P1382971
(11+4)
#1 with double check

16 mates with double check

http://matplus.net/start.php?px=1607750786&app=forum&act=posts&fid=gen&tid=2281
HBae: vgl. P1178768 von Colin V. Vaughan fs 1976 (2020-12-13)
HBae: An der Mittelsenkrechten gespiegelt durch Vaughn fast steingetreu vorweggenommen. (2020-12-13)
comment

Genre: n#
FEN: 1n1b1n2/1QPkPQ2/2N5/2KN4/B5N1/7B/8/3R4
Input: James Malcom, 2020-12-13
Last update: James Malcom, 2020-12-13 more...
15 - P1391055
Jacques Rotenberg
Michel Caillaud

PS3607 The Problemist Supplement 169, p. 115, 11/2020
P1391055
(6+14) C+
h#2
5.1...
1) 1. Sb5 axb5 2. Dxb5 La3#
2) 1. Dxb6 Le3 2. Dc5 Lxc5#
3) 1. Dxe5 Lf4 2. Dd6 Lxd6#
4) 1. f5 Lg5 2. De7+ Lxe7#
5) 1. g6 Lh6 2. Df8+ Lxf8#
play all play one stop play next play all
Jacques Rotenberg: 1st commended (2024-02-21)
comment
Keywords: Capture key
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: rn6/Qpn2Kp1/1P2pp2/2q1P3/Pkb1p3/1pb2r2/8/2B5
Input: Felber, Volker, 2021-06-25
Last update: Alfred Pfeiffer, 2021-11-13 more...
16 - P1391350
Jacques Rotenberg
Uri Avner

G34 8. WCCT 2005-2008
3. Platz
P1391350
(15+15) C+
#2
Anticirce type Cheylan
wTR,sTR=Pao
wLR,sLR=Vao
* 1. ... VAf4xh6[+sVAh1] 2. Ta1xc1[+wTa1]#
* 1. ... PAf6xh6[+sPAh1] 2. Ld5xb7[+wLf1]#
* 1. ... PAf5xh5[+sPAh1] 2. Ta1-b1#
* 1. ... VAf7xh5[+sVAh1] 2. Sd6xb7[+wSb1]#

1. Ke6-e5! droht 2. Ta8-b8#
1. ... VAf4xh6[+sVAh1] 2. Ld5xb7[+wLf1]#
1. ... PAf6xh6[+sPAh1] 2. Ta1-b1#
1. ... PAf5xh5[+sPAh1] 2. Sd6xb7[+wSb1]#
1. ... VAf7xh5[+sVAh1] 2. Ta1xc1[+wTa1]#
1. ... Tc8-b8 2. Sd6-c8#
play all play one stop play next play all
Jacques Rotenberg: Lacny 4x2
rebirth clash or a1, c1, d1, h1 (and, arguably on a8)
specific battery mates - non of the mates are given by the moving piece
reminder "Cheylan" means that a capture on the rebirth square is forbidden, here, the Pao a5 cannot capture on a8 (2021-10-14)
comment
Keywords: Circe (Anti-, Cheylan)
Pieces: tr = Pao (PA), lr = Vao (VA)
Genre: Fairies
Computer test: Popeye 4.83
FEN: R1r1r2n/kpQ2*1b*1b1/P2NK*1rpP/*1R2B1*1rpP/2N2*1b2/n3BP2/b5P1/R1b1*1B3
Input: Marcin Banaszek, 2021-07-04
Last update: Alfred Pfeiffer, 2021-12-08 more...
17 - P1393858
Jacques Rotenberg
2397 Die Schwalbe 1978
Informalturnier der
Schwalbe 1978 Dreizüger
2. Preis
P1393858
(12+11)
#3
1. Sbxc4? Dxd5! 1. Sexc4? Te5! 1. Lxc4? Txa6!

1. Te6! Tgxe6 2. Sbxc4
1. ... Dxe6 2. Sexc4
1. ... Texe6 2. Lxc4
play all play one stop play next play all
Henrik Juel: Many double threats, duals, and mate duals
The three thematical variations are (almost) correct (2021-09-20)
Jacques Rotenberg: The way the tries and solution should be shown is as follow :

1.Sbxc4? Dxd5!/Txe5!
1.Lxc4? Dxd5!/Tb6!
1.Sexc4? Ta6!/Txe2!

1.Te6! [2.Sbxc4!/2.Lxc4!/2.Sexc4!]

1. ...Tgxe6 2. Sbxc4! [3.Sxa3#, 3.Se3#] (2...Dxd5?/T7xe5?)
1. ...Dxe6 2. Sexc4! [3.Sxa3#, 3.Ld3#] (2...Ta6?/Txe2?)
1. ...Texe6 2. Lxc4! [3.Lb3#, 3.Ld3#] (2...Dxd5?/Tgb6?)
reciprocal interception of 3 same moving pieces on the same square with clear logic structure.
The three white moves are on the same square

1...Sxd2 2.Sed3! [3.Sb4#, 3.Se1#, 3.Tc1#]
1...Sxe5 2.a8=D!
1...axb2 2.b8=D!
no dual and no mate dual (2021-09-23)
Henrik Juel: Thanks for the enlightenment, Jacques (2021-09-23)
comment
Keywords: Doppeldrohung
Genre: 3#
FEN: 5bq1/PP1pr2b/R5r1/3PN3/2pB2p1/p1P2n2/KNkPB3/3R4
Reprints: 2397 Die Schwalbe 61, p. 26, 02/1980
Input: Dieter Berlin, 2021-09-20
Last update: Dieter Berlin, 2021-09-20 more...
18 - P1394237
Jacques Rotenberg
18543 Die Schwalbe 308 04/2021
Julia Vysotska gewidmet
P1394237
(2+10+2)
h#2 2.1;1.1
take&make
a) 1.nTe4 nT:e2-g1 2.L:g2-g8 nL:g1-a1#, b) 1.f:g2-g7+ nT:f1-g2 2.nT:h2-c7 nT:b7-a8#.
play all play one stop play next play all
LaTeX-import:
Keyword not uniquely identified: reziproke Schläge
SCHRECKE: C+, popeye 4.87 (2021-10-04)
Jacques Rotenberg: .
Diagonal/orthogonal echo
reciprocal captures
mates in the corners
paradoxical capture of the only white piece of the diagram in both solutions (2021-10-14)
Jacques Rotenberg: it means : Zilahi (2021-10-14)
comment
Keywords: Zilahi
Genre: Fairies
FEN: 7k/pq1p3p/8/1p3p2/5-R2/5p1K/4n1R-B/5b2
Input: Stefan Höning, 2021-10-03
Last update: Stefan Höning, 2021-10-03 more...
19 - P1399804
Jacques Rotenberg
Jean-Marc Loustau

4727 Die Schwalbe 87, p. 271, 06/1984
2. Preis
Informalturnier
Dreizüger
P1399804
(12+14)
#3
1. Dg7? Dxd5 2. Se6+ 1. ... Dd4 2. Se4+ 1. ... Dxe5 2. Sf7+ 1. ... De3!
1. Db7? Dxd5 2. Se4+ 1. ... Dd4 2. Sf7+ 1. ... Dxe5 2. Se6+ 1. ... De3!

1. Da7! Dxd5 2. Sf7+ 1. ... Dd4 2. Se6+ 1. ... Dxe5 2. Se4+
1. ... De3 2. fxe3+ 1. ... Kxe5 2. Dg7+
play all play one stop play next play all
Henrik Juel: In solution trial 1... Lg2 2.Sf3,Sf7,fxg3+ and mate duals after 1... De3 2.fxe3+ Kxe5 (2022-03-15)
comment
Keywords: Lacny cycle
Genre: 3#
FEN: 2n3B1/5Q1R/K2n3B/3PPpN1/2p1qkpR/3p1bpP/3bpP2/5Nrr
Reprints: 4727 Die Schwalbe 100, p. 122, 08/1986
Input: Dieter Berlin, 2022-03-15
Last update: Dieter Berlin, 2022-03-15 more...
20 - P1401691
Jacques Rotenberg
OP009 The Hopper Magazine I01 24/12/2021
P1401691
(9+13) C+
#7
Circe
Jacques Rotenberg: 1.Se3+?
1…Kd2 2.Ld4+ T×c6(c2) 3.L×d3(d7) [4.Sc4‡] e5+ 4.S×d5(Lc8) [5.Le3‡, 5.Lc3‡] Tf6+ 5.S×f6 [6.Se4‡, 6.c×b3(Sg8)‡]
mais 1…Ke2!

1.Sh2+? Ke2 2.Ld4+ S×c5(c2), T×c6(c2), L×c6(c2) 3.L×d3(d7)+ Kd2 4.Sf3‡
mais 1…Kd2!

1.Ld4? [2.Se3‡, 2.Sh2‡, 2.Sg3‡]
mais 1…e5+!

1.Sg3+!
1…Kd2 2.Ld4+!
2…T×c6(c2) 3.c×b3(Sg8)+ T×c7(c2)+ 4.c×d3(d7)+ T×c5(c2) 5.c4+ Tc×c4(c2) 6.c3+ T×c3(c2) 7.Le3‡
5…L×c4(c2) 6.T×g2(g7)+ D×g2(Th1) 7.Td1‡
6…Ke1 7.Ta1‡ (7…L×d4(Lc1)??)
(5.c3+? L×b3(b2)!)
3…T×c5(c2) 4.c3+ T×c7(c2)+ 5.c×d3(d7)+ L×b3(b2) 6.Le3+ Kc2 7.d4‡
4…L×b3(b2) 5.Le3+ Kc2 6.L×d3(d7)‡
(4.c×d3(d7)+? L×b3(b2) 5.Le3+ Kc2 6.Tc1+ D×c1(Ta1) 7.T×c1(Dd8)‡, 4…Tc2!
4.c4+? Ta×c4(c2) 5.c3+ T×c7(c2)+ 6.c×d3(d7)+ T×c3(c2) 7.Le3‡
4…Tc×c4(c2)! 5.c3+ T×c7(c2)+! 6.c×d3(d7)+ L×b3(b2)!)
(3.c×d3(d7)+? S×c5(c2)!
3.L×d3(d7)? [4.Se4‡] e5+!)
2…S×c5(c2) 3.L×d3(d7) [4.Se4‡] e5+ 4.Ke8 [5.Se4‡] Lf7+ 5.K×f7(Lc8) [6.Se4‡] S×d3(Lf1) 6.Se4+ Kc1 7.L×d3(Sg8)‡
(4.Kg6? T×c6+!)
(6.L×d3(Sg8)? [7.Se4‡] Sh6+!) (2022-06-08)
Jacques Rotenberg: Albino (2022-06-08)
Anton Baumann: C+ Alybadix (2023-05-11)
comment
Keywords: Circe, Albino
Genre: n#, Fairies
Computer test: C+ Alybadix
FEN: 7b/p1P2K1B/r1P1p3/2Pb3p/r7/pn1p4/RB4p1/3k1NRq
Input: A.Buchanan, 2022-06-08
Last update: A.Buchanan, 2023-07-28 more...
21 - P1402237
James Malcom
Jacques Rotenberg

Problemiste 2012
JR Version JM
SuperProblem.net 01/06/2022
P1402237
(9+14)
#10
1. Sfxe7+ cxd5+ 2. Sxd5+ Sef6+ 3. Sdxf6+ d5+ 4. Sxd5+ Sf6+ 5. Sdxf6+ d5+ 6. Sxd5+ Te7+ 7. Sdxe7+ Ld5+ 8. Dxd5+ f5+ 9. Sxf5+ Te7+ 10. Sfxe7#
7. ... f5+ 8. Sxf5+ Te7+ 9. Sfxe7+ Ld5+ 10. Dxd5#
play all play one stop play next play all
See P1298074
Record for consecutive checks in a legal directmate
http://superproblem.ru/archive/probl/N/Rotenberg-10x-2012.gif
Henrik Juel: mate trial in first variation
9.Sxf5+ Kh5 10.Sxg7,Sg3,Th4# (2022-06-26)
Jacques Rotenberg: If you really want a legal diagramme, you can begin after the key of P1298074, black to play, it will be legal and the longest sequence of checks (2022-06-30)
Jacques Rotenberg: ...doing so is not really enough ... no last move!
a tricky way would be - from diag P1298074 : - f5, -e7, + white knight f6 with 20 checks ahead + 2 retro checks ! (2022-07-01)
Jacques Rotenberg: ...not good either (2022-07-05)
Jacques Rotenberg: btw, I don't agree that my name will be as author of this diagram.
I am author of P1298074 not of this. (2022-07-08)
comment
Keywords: Consecutive checks (19)
Genre: n#
FEN: 3Bn1N1/qrrpbppn/1Ppp2p1/2QR1Nk1/3PKR2/8/b7/8
Input: James Malcom, 2022-06-26
Last update: James Malcom, 2022-06-26 more...
22 - P1402371
Matthieu Leschemelle
Jacques Rotenberg

435/2 Europe Echecs 1995
Paris 09/12/1994
P1402371
(6+6) C+
#2
1. Sb4! droht 2. Db3#
1. ... Tbxb4 2. Ta5#
1. ... Tcxb4,Tcxd4 2. Txc3#
1. ... Kxb4 2. Txb5#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2022-06-30)
Jacques Rotenberg: Plachutta in 2 moves! (2022-07-06)
comment

Genre: 2#
Computer test: Henrik Juel (2022-06-30): C+ Popeye 4.61
FEN: 8/1q2B3/2p5/1rR5/2rN4/k1p5/N1Q3K1/8
Input: ML, 2022-06-30
Last update: Mario Richter, 2022-07-01 more...
23 - P1402372
Matthieu Leschemelle
Jacques Rotenberg

2245 Phénix 1996
Paris 20/12/1994
P1402372
(6+6)
#2
Solution: 1. Sac4! [2. Sb6, Qa3#]
1. ... Bxc4 2. Bd7#
1. ... Qb2 2. Sxb2#
1. ... Qxc4 2. Bd1#
play all play one stop play next play all
Henrik Juel: double threat and duals after 1... Df3,Dd3,De3 (2022-07-01)
Jacques Rotenberg: 1...Df3 and 1...Dd3 are not defences
To add a black pawn on c5 would forbid De3 to be a defence, but... it is not evident to know if it is worth doing so (2022-07-01)
comment

Genre: 2#
FEN: 8/5p2/p2Nb2K/6n1/k5BR/N1Q5/4q3/8
Input: ML, 2022-06-30
Last update: ML, 2022-06-30 more...
24 - P1402458
Jean-Marc Loustau
Michel Caillaud
Jacques Rotenberg

5900 Die Schwalbe 08/1987
3. Preis
2. Halbjahr 1987
P1402458
(8+10) C+
#2
1. Dg6-g3? droht 2. Sf4-d3#
1. ... Dh3-f5 2. Dg3-a3#
1. ... Dh3xg3 2. Sf4-e6#
1. ... e2-e1=S!
1. Dg6-g4? droht 2. Sf4-e6#
1. ... Dh3-e3 2. Dg4-c8#
1. ... Dh3xg4 2. Sf4-d3#
1. ... e2-e1=D!

1. Dg6-e4! droht 2. De4xd4# 2. De4xe7#
1. ... Dh3-f5 2. Sf4-d3#
1. ... Dh3-e3 2. Sf4-e6#
1. ... Sf6xe4 2. Th5xd5#
1. ... Sf6xh5 2. De4xd5#
play all play one stop play next play all
Judge Fritz Hoffmann 08/1990
Jacques Rotenberg: :
Dombrovskis paradox
1. Dg6-g3? droht 2. Sf4-d3# A
1. ... Dh3-f5 a 2. Dg3-a3#
1. ... Dh3-f5 forbids 2. Sf4-d3# (a forbids A)

1. Dg6-g4? droht 2. Sf4-e6# B
1. ... Dh3-e3 b 2. Dg4-c8#
1. ... Dh3-e3 forbids 2. Sf4-e6# (b forbids B)

1. Dg6-e4! droht 2. De4xd4# 2. De4xe7#
1. ... Dh3-f5 2. Sf4-d3#
1. ... Dh3-e3 2. Sf4-e6#
now a provokes A and b provokes B (2022-07-19)
comment

Genre: 2#
Computer test: Popeye 4.83
FEN: 8/Kp2b3/1R3nQ1/1Bkr3R/p1Pp1N1p/7q/2N1p3/8
Input: Marcin Banaszek, 2022-07-05
Last update: Marcin Banaszek, 2022-07-05 more...
25 - P1411271
Jacques Rotenberg
OP023 The Hopper Magazine I03 30/12/2022
P1411271
(2+2) C+
HS#5 Antineukoko b) Kh2-->b1 c) Kh2-->h6 d) Kb4-->f3
a) 1. Lg1 Kc3 2. Kh3 c1=D 3. Ld4+ Kb3 4. Lb2 Ka4 5. Lh8 Da3#
b) 1. Ka2 Kb3+ 2. Ka1 c1=S 3. Kb1 Kb2 4. Ld2 Ka3 5. Ka1 Kb2#
c) 1. Lg5 Kb3 2. Kh7 c1=L 3. Lh6 Lg5 4. Lf8 Lh6 5. Kh8 Lg7#
d) 1. Ld4 Ke4 2. Lf2 Kd3 3. Kg3 c1=T 4. Lc5 Kc4 5. Lf8 Tc3#
play all play one stop play next play all
more ...
comment
Keywords: AntiNeuKöko, Allumwandlung, Minimal, Miniature
Genre: Fairies
Computer test: C+, Jacobi v0.7.5
FEN: 8/8/8/8/1k6/4B3/2p4K/8
Input: Miguel Ambrona, 2023-07-26
Last update: Dieter Berlin, 2024-02-01 more...
26 - P1411272
Jacques Rotenberg
SS071 The Hopper Magazine I03 30/12/2022
P1411272
(5+7) C+
H#4
1. Kg1 Tb1 2. h1=S Ta1 3. Sxg3 Kxg3 4. Kh1 Txc1#
play all play one stop play next play all
Jacques Rotenberg: waiting moves in the corners (2024-01-30)
more ...
comment

Genre: h#
Computer test: C+, Gustav 4.2e, Brute Force
FEN: 8/8/6p1/6Pb/6pK/p5P1/P6p/R1n4k
Input: Miguel Ambrona, 2023-07-26
Last update: A.Buchanan, 2023-07-28 more...
27 - P1411273
Jacques Rotenberg
SS085 The Hopper Magazine I03 30/12/2022
P1411273
(6+9) C+
h#1.5
b) wDh7->h4
Breton
a) 1. ... Sb3 2. Txb3[-sSg1] Tc4#
b) 1. ... Tb5 2. Kxd3[-sSg1] Tb3#
play all play one stop play next play all
Jacques Rotenberg: Black must capture a white knight to make Sg1 disappear, making the second white knight taboo.

a) 1.Tc4+? Kxd3!
b) 2.T3~? Tb3+ Kxd4! (2024-01-30)
more ...
comment
Keywords: Breton
Genre: h#, Fairies
Computer test: C+, popeye 4.87
FEN: b6r/7Q/B7/8/1R1Nn3/r1kN2p1/3q1p2/6nK
Input: Miguel Ambrona, 2023-07-26
Last update: A.Buchanan, 2023-07-28 more...
28 - P1411302
Jacques Rotenberg
SS030 The Hopper Magazine I02 25/6/2022
P1411302
(3+3) C+
#2
1. Dh1! droht 2. Da8#
1. ... Sf3,Se4,Sc4,Sb3,Sb1 2. Db1#
play all play one stop play next play all
Jacques Rotenberg: a special kind of anti-dual (or black correction) :
a random move of the knight d2 provokes 2.Qb1# that would come as a dual. It appears that all the possible moves forbid the threat and 1...Sg1!? forbids the mate on b1

tries :

1.Dd1? blocus e2!
1.De1? blocus e2!
1.Dg1? blocus Cf1!
1.b3?/1.b4? [2.Db2‡] Cc4!
1.D×d2? [2.Da5‡] e×d2! (2024-02-01)
more ...
comment
Keywords: Miniature
Genre: 2#
Computer test: C+, popeye 4.87
FEN: 8/8/8/8/8/4p3/kPKn4/2Q5
Input: Miguel Ambrona, 2023-07-27
Last update: A.Buchanan, 2023-07-28 more...
29 - P1411303
Jacques Rotenberg
SS031 The Hopper Magazine I02 25/6/2022
P1411303
(9+8) C+
#2
Jacques Rotenberg: .
1.Le4? [2.D×e3 A,Df5‡ B]
1…K×e4 2.Dc4‡
1…e×f2 !

1.D×e7? [2.D×e3‡ A]
1…Le4 a 2.D×e4‡ C
1…e×f2 !

1.D×c2? [2.Df5‡ B]
1…Te4 b 2.D×e4‡ C
1…Te5 !

1.Lc6! [2.Sg2‡]
1…Le4 a 2.D×e3‡ A
1…Te4 b 2.Df5‡ B
1…L×g6+ 2.S×g6‡
1…e×f2 2.D×f2‡

1.Dd5? [2.Sg2,Df3‡]
mais 1…Le4 !

1.La8? [2.Sg2‡]
1…c6 !

Grimshaw
Novotny
Dombrovskis paradox (2024-02-20)
Jacques Rotenberg: .
1.Ld5? [2.Sg2‡]
1…Le4 2.D×e3‡
1…L×g6+ 2.S×g6‡
1…T×f7 2.D×e3‡
1…e×f2 2.D×f2‡
1…Te4!

1.Dd5? [2.Sg2‡, 2.Df3‡]
1…L×g6+ 2.S×g6‡
1…Te4 2.Df5‡
1…Le4!

a pair of tries refuted by the Grimshaw moves (2024-02-20)
more ...
comment

Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 1b6/2p1rNpK/5pP1/2Q5/5kPN/4p2P/2b2P2/7B
Input: Miguel Ambrona, 2023-07-27
Last update: Dieter Berlin, 2024-02-20 more...
30 - P1411304
Jacques Rotenberg
SS037 The Hopper Magazine I02 25/6/2022
P1411304
(5+7) C+
H#2 (2 solutions)
1) 1. Tg3! Txf4 2. Tf3 Te4#

2) 1. Kd4! e4 2. Ke3 Lc5#
play all play one stop play next play all
Jacques Rotenberg: switchbacks (2024-02-01)
more ...
comment
Keywords: Switchback (1) + 2))
Genre: h#
Computer test: C+, popeye 4.87
FEN: 8/8/8/6p1/1B3r1b/4kr1q/4PRb1/1B4K1
Input: Miguel Ambrona, 2023-07-27
Last update: Dieter Berlin, 2024-02-01 more...
31 - P1411305
Jacques Rotenberg
SS038 The Hopper Magazine I02 25/6/2022
P1411305
(4+4) C+
H#3 (set play, 2 solutions)
*) 1. ... Ta4 2. c3 bxc3 3. Se5 Td4#

1) 1. Sa4! Lxc6+ 2. Kc5 Ta5+ 3. Kb4 Tb5#
2) 1. Sa6! Lc8 2. Kc5 b4+ 3. Kb6 Tb7#
play all play one stop play next play all
Jacques Rotenberg: Echo model mates, chameleon echo, the bishop being used in the mates as a pawn going backwards (2024-02-01)
more ...
comment

Genre: h#
Computer test: C+, popeye 4.87
FEN: 7K/R2B4/2n5/2nk4/2p5/8/1P6/8
Input: Miguel Ambrona, 2023-07-27
Last update: Dieter Berlin, 2024-02-01 more...
32 - P1411306
Jacques Rotenberg
OP017 The Hopper Magazine I02 25/6/2022
P1411306
(5+8)
H#2 Take & Make (just 1 solution)
Jacques Rotenberg: .
1.T×g3(Tg4) T×a6(Ta5) 2.T×g2(Tg4) T×a7(Ta5)‡

each move is a switchback : 4 'invisible' moves
black/white echo (2024-02-21)
Henrik Juel: C+ Popeye 4.61 (2024-02-21)
comment
Keywords: take&make Chess
Genre: h#, Fairies
FEN: krb5/pq6/p7/R7/6r1/1p4PK/6R1/7B
Input: Miguel Ambrona, 2023-07-27
Last update: A.Buchanan, 2023-07-27 more...
33 - P1411329
Jacques Rotenberg
SS051 The Hopper Magazine I02 25/06/2022
P1411329
(2+2+2)
H#2 Neutrals
(2 solutions)
Jacques Rotenberg: .
Mistake in the diagram! :the queen g8 is neutral!

1.Sne2+ Sn×g3+ 2.Snf5 g4‡
1.Dn×g3+ Dng6+ 2.Kh4 g3‡

exchange of functions between Sng1 and Dng8
cross checks (2024-02-21)
Henrik Juel: C+ Popeye 4.61 (2024-02-21)
comment
Keywords: Miniature
Genre: h#, Fairies
FEN: 6q1/8/8/7k/8/2K3-P1/6P1/6-N1
Input: A.Buchanan, 2023-07-27
Last update: A.Buchanan, 2023-07-27 more...
34 - P1411336
Jacques Rotenberg
Guy Sobrecases

SS082 The Hopper Magazine I03 30/12/2022
P1411336
(3+2) C+
H#4 Grasshoppers b) Ge1-->f2
c) Continued Kh1-->h8 d) Continued Kf5-->f8
a) 1. c1=L Kg4 2. Ld2 Gc3 3. Le3 Kg3 4. Lg1 Gh3#
b) 1. c1=G Kg5 2. Gh6 Kf4 3. Ge3 Kg3 4. Gg1 Gh4#
c) 1. c1=T Gf6 2. Tc2 Gb2 3. Tc8 Kg6 4. Tg8+ Gg7#
d) 1. c1=D Ge2 2. Dc2 Gb2 3. Df5+ Gf6 4. Dh7 Gg7#
play all play one stop play next play all
Jacques Rotenberg: all the possible promotions with these pieces (no possible mate with a black S) (2024-02-01)
more ...
comment

Pieces: du = Grasshopper (G)
Genre: h#, Fairies
Computer test: C+ Popeye 4.61
FEN: 8/8/8/5K2/8/8/2p4*2Q/4*2Q2k
Input: A.Buchanan, 2023-07-27
Last update: A.Buchanan, 2023-07-28 more...
35 - P1415128
Jacques Rotenberg
PS3952 The Problemist Supplement 185, p. 306, 07/2023
P1415128
(9+8) C+
#2
2 Lösungen
1) 1. Df7 droht 2. Te3#
1. ... Lxe4 2. Lh5#
1. ... Sd5 2. Sd4#
1. ... Sf6 2. Sg5#

2) 1. Db7 droht 2. Lh5#
1. ... Lxe4 2. Dxe4#
1. ... Sd5 2. Sd4#
1. ... Sf6 2. Sg5#
play all play one stop play next play all
Jacques Rotenberg: .
Exchange of motive of defense between Sd5 and Sf6
long lines black focal queen
Dombrovskis paradox (2024-02-20)
comment

Genre: 2#
Computer test: Gustav 4.1d
FEN: 3qn3/Q5pN/1n2p1B1/1N2P3/2p1RB2/3b1k1P/8/6K1
Input: Felber, Volker, 2024-02-19
Last update: Felber, Volker, 2024-02-19 more...
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