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11 problem(s) found in 1875 milliseconds (displaying 11 problem(s)). [COMMENTDATE>=20200919 AND CPLUS AND S='RIFACE'] [download as LaTeX]

1 - P1305233
Alexandre Leroux
4 Retro Championnat de France RIFACE 2015
P1305233
(2+1) C+
KBP in 7.0
Ergänze die fehlenden Steine!
a) 1. a4 Sf6 2. a5 Se4 3. a6 Sxd2 4. Kxd2 h5 5. Kc3 Th6 6. Kb4 Te6 7. Ka5 Te4
play all play one stop play next play all
Originalforderung: Ajouter des pieces pour avoir une PCPJ en 7,0 Coups
Henrik Juel: Given the final position, the proof game is C+ by Euclide 1.01 (2015-07-08)
paul: Easily verified by Jacobi with the code: stipulation PG 7 pieces white Ka5 Pa6 black Re4 AddPieces (2021-07-06)
A.Buchanan: An essential linking word in the author's stipulation has been lost in translation: "Ajouter des pieces *pour* avoir une PCPJ en 7,0 Coups." I'm glad that on this occasion the Originalforderung was retained, but can we use a German template for these which is something like "Ergänze die fehlenden Steine um ein KBP in 7,0 zu haben". In English it would be "Add the missing pieces for an SPG in 7.0." (2021-07-07)
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Keywords: Unique Proof Game, Add pieces, Constrained problem
Genre: Retro
Computer test: rawbats, jacobi & Euclide
FEN: 8/8/P7/K7/4r3/8/8/8
Reprints: Phénix 2015
12 Phénix 296-297, p. 11536, 05-06/2019
1 Die Schwalbe 301, p. 440, 02/2020
Input: A.Buchanan, 2015-07-08
Last update: A.Buchanan, 2023-04-13 more...
2 - P1347210
Pascal Wassong
Thierry Le Gleuher
Axel Gilbert

RIFACE 2017
2nd Prize
P1347210
(16+16) C+
KBP in 16,5
Weißer Längstzüger
Weißer Ohneschlag
1. Sf3 Sc6 2. Sd4 Se5 3. Sc6 a6 4. Sb8 c6 5. Sa3 Db6 6. Sc4 Db3 7. Sa5 Sc4 8. a4 Db5 9. Sb3 g5 10. Sc5 Lg7 11. Se4 Le5 12. Sc3 Lc7 13. Sb1 d6 14. Sd7 Sf6 15. Se5 0-0 16. Sf3 Kh8 17. Sg1
play all play one stop play next play all
Joost de Heer: Solution: 1.Sf3 Sc6 2.Sd4 Se5 3.Sc6 a6 4.Sb8 c6 5.Sa3 Qb6 6.Sc4 Qb3 7.Sa5 Sc4 8.a4 Qb5 9.Sb3 g5 10.Sc5 Bg7 11.Se4 Be5 12.Sc3 Bc7 13.Sb1 d6 14.Sd7 Sf6 15.Se5 O-O 16.Sf3 Kh8 17.Sg1 (2021-01-04)
comment
Keywords: Unique Proof Game, No-capture chess (w), Maximummer (w), RIFACE Retro Composition Tourney (2017)
Genre: Retro, Fairies
FEN: r1b2r1k/1pb1pp1p/p1pp1n2/1q4p1/P1n5/8/1PPPPPPP/RNBQKBNR
Reprints: Phénix 279-280, p. 10966, 11-12/2017
Input: A.Buchanan, 2018-02-24
Last update: Gerd Wilts, 2021-01-04 more...
3 - P1347216
Philippe Rouzaud
RIFACE 2017
1. Lob
P1347216
(12+16) C+
KBP in 15,0
Weißer Längstzüger
Weißer Ohneschlag
paul: 1.Sa3 d5 2.Sc4 d×c4 3.Sf3 Qd3 4.Sd4 Kd8 5.Sb3 c×b3
6.h4 b×c2 7.Rh3 c×d1=B 8.Re3 Ba4 9.Re6 Be8 10.Ra6 Qd7
11.Rh6 g6 12.a4 Bg7 13.Ra3 Be5 14.Rh3 Bg3 15.Rh1 Bh2 (2021-08-19)
comment
Keywords: Unique Proof Game, No-capture chess (w), Maximummer (w), Non-standard material (l), RIFACE Retro Composition Tourney (2017)
Genre: Retro, Fairies
FEN: rnbkb1nr/pppqpp1p/6pR/8/P6P/8/1P1PPPPb/2B1KB1R
Reprints: Phénix 279-280, p. 10967, 11-12/2017
Input: A.Buchanan, 2018-02-24
Last update: A.Buchanan, 2020-10-05 more...
4 - P1347219
François Labelle
RIFACE 2017
3. Lob
P1347219
(16+16) C+
Move a black rook to c2 in 6 moves
Längstzüger
Schwarzer Ohneschlag
1. c4 Sc6 2. Dc2 Sd4 3. Dxh7 Sb5 4. Dh4 Th5 5. cxb5 Tc5 6. Dg5 Tc2
play all play one stop play next play all
Joost de Heer: 1. c4 Sc6 2. Qc2 Sd4 3. Qh7 Sb5 4. Qh4 Rh5 5. cxb5 Rc5 6. Qg5 Rc2 (2021-01-04)
comment
Keywords: Synthetic problem, No-capture chess (s), Maximummer, RIFACE Retro Composition Tourney (2017), Homebase
Genre: Retro, Fairies
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR
Reprints: Phénix 279-280, p. 10968, 11-12/2017
Input: A.Buchanan, 2018-02-24
Last update: James Malcom, 2023-07-04 more...
5 - P1380663
Pascal Wassong
RIFACE 2016
1st prize
P1380663
(15+16) C+
BP in genau 9.5
vertikaler Zylinder
1. d4 Sf6 2. Lh6 Tg8 3. e3 Ta8-h8 4. Da6 Sxa6 5. Sd2 Tb8 6. 0-0-0 Tba8 7. Kb1 Sb8 8. La6 Tgh8 9. Sf1 Sg8 10. Le1
play all play one stop play next play all
Henrik Juel: C+ Jacobi 0.7.5
1.d4 Sf6 2.Bh6 Rg8 3.e3 Rah8 4.Qa6 Sxa6 5.Sd2 Rb8 6.O-O-O Rba8 7.Kb1 Sb8 8.Ba6 Rgh8 9.Sf1 Sg8 10.Be1
On a standard board Black would have made an even number of moves; not so here, with Ra8-h8-b8-a8 (2020-10-05)
A.Buchanan: This has exactly 200 solutions as a PG in 8.5, for example 1.d4 Sf6 2.Sd2 Sd5 3.e3 Sc3 4.Ba6 Sxd1 5.Sf1 Sc3 6.Bd2 Se4 7.O-O-O Sf6 8.Kb1 Sg8 9.Be1. It's restored to soundness if "genau" is stuck in the stipulation. (2021-06-10)
comment
Keywords: Unique Proof Game, Vertical Cylinder, Homebase (s), RIFACE Retro Composition Tourney (2016), Initial Game Array (s)
Genre: Retro, Fairies
Computer test: C+ Jacobi 0.7.5 but shorter BPs exist
FEN: rnbqkbnr/pppppppp/B7/8/3P4/4P3/PPP2PPP/1K1RBNNR
Reprints: II Phénix 310-311, p. 12121, 09-10/2020
Input: A.Buchanan, 2020-10-05
Last update: A.Buchanan, 2021-06-10 more...
6 - P1380664
Michel Caillaud
RIFACE 2016
2nd prize
P1380664
(15+15) C+
BP in 7.5
vertikaler Zylinder
more ...
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Keywords: Unique Proof Game, Vertical Cylinder, RIFACE Retro Composition Tourney (2016)
Genre: Retro, Fairies
Computer test: C+ Jacobi
FEN: r1bq1bnr/ppppp1pp/k3R3/6n1/7P/8/PPPP1PP1/RNBQKBN1
Input: A.Buchanan, 2020-10-05
Last update: A.Buchanan, 2021-06-09 more...
7 - P1380666
Thierry Le Gleuher
Pascal Wassong
Jacques Dupin

RIFACE 2016
2nd honourable mention
P1380666
(14+15) C+
BP in 8.0
vertikaler Zylinder
Henrik Juel: C+ Jacobi 0.7.5
1.Sf3 b5 2.Sh4 Bf3 3.gxf3 b4 4.Bc6 dxc6 5.h3 Qd6 6.Rh2 Qxh2 7.Sg2 Qd6 8.O-O-O-O Qd8
Looks like kingside castling, but is loong castling with [Ra1] (2020-10-05)
comment
Keywords: Unique Proof Game, Vertical Cylinder, RIFACE Retro Composition Tourney (2016)
Genre: Retro, Fairies
Computer test: C+ Jacobi v0.7.5 & no shorter solution -0.5,-1.0,-1.5
FEN: rn1qkbnr/p1p1pppp/2p5/8/1p6/5P1P/PPPPPPN1/1NBQ1RK1
Input: A.Buchanan, 2020-10-05
Last update: A.Buchanan, 2021-06-10 more...
8 - P1380667
Thierry Le Gleuher
RIFACE 2016
3rd honourable mention
P1380667
(15+13) C+
BP in 9.0
vertikaler Zylindre
1. Sc3 g5 2. Sd5 g4 3. Sxe7 g3 4. Sxg8 gxf2+ 5. Kxf2 h5 6. Kg3 Th6 7. Kh3 Te6 8. Sh6 Te7 9. Ka3 Te3#
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Henrik Juel: C+ Jacobi 0.7.5
Cylinder-specific mate with triple-check (2020-10-05)
comment
Keywords: Unique Proof Game, Vertical Cylinder, RIFACE Retro Composition Tourney (2016)
Genre: Retro, Fairies
Computer test: C+ Jacobi v0.7.5 & no shorter solution -0.5,-1.0,-1.5 (AB)
FEN: rnbqkb2/pppp1p2/7N/7p/8/K3r3/PPPPP1PP/R1BQ1BNR
Input: A.Buchanan, 2020-10-05
Last update: A.Buchanan, 2021-06-10 more...
9 - P1380668
Michel Caillaud
RIFACE 2016
1st commendation
P1380668
(0+1) C+
BP in 6,0
Ergänze Steine zu einem Vierfachschach
vertikaler Zylinder
1. e4 e6 2. Dd1xb7 Da3 3. Dxa7 Txa7 4. e5 Tb7 5. Ke2 Da8 6. Kf3 Tb3++++
play all play one stop play next play all
Henrik Juel: This proof game is C+ Jacobi 0.7.5 (2020-10-06)
A.Buchanan: Thanks Henrik: wish we could show any solution in the animation, by including a sequence of actual diagrams where a fairy move cannot be animated directly. All this requires to implement this is some documentation (2020-10-07)
comment
Keywords: Unique Proof Game, Vertical Cylinder, RIFACE Retro Composition Tourney (2016), Miniature
Genre: Retro, Fairies
Computer test: C+ Jacobi 0.7.5 & no shorter solution -1.0 (WTM)
FEN: 8/8/4p3/8/8/8/8/8
Input: A.Buchanan, 2020-10-05
Last update: Arnold Beine, 2022-10-27 more...
10 - P1380669
Marco Bonavoglia
RIFACE 2016
2nd commendation
P1380669
(14+15) C+
BP in 5.0
2 Lösungen
vertikaler Zylindre
Kees: 1.e4 g6 2.Da6 hxa6 3.c4 Th6 4.d3 Fg7 5.Fxh6 axh6
1.c4 a6 2.Dg6 hxg6 3.d3 Th6 4.Fxh6 gxh6 5.e4 Fg7 (2022-11-22)
more ...
comment
Keywords: Unique Proof Game, Vertical Cylinder, RIFACE Retro Composition Tourney (2016)
Genre: Retro, Fairies
Computer test: C+ Jacobi
FEN: rnbqk1n1/1pppppb1/p5pp/8/2P1P3/3P4/PP3PPP/RN2KBNR
Input: A.Buchanan, 2020-10-05
Last update: A.Buchanan, 2021-06-09 more...
11 - P1389734
Paul Raican
6 Retro Championnat de France RIFACE 2020
P1389734
(15+15) C+
KBP in 14.5
1. e4 d5 2. exd5 Dxd5 3. Dg4 Db3 4. Db4 Kd7 5. Sc3 Ke6 6. Lc4+ Ke5 7. d3 Kd4 8. Lg5 e5 9. f4 Ke3 10. Kf1 Kd2 11. Kf2 Lc5+ 12. Kf3 Lf2 13. Tf1 Le1 14. Se4+ Kd1 15. Dd2#
play all play one stop play next play all
Moldenhauer: Computerprüfung: C+ Stelvio 1.4 in 10 Sekunden.
Keine Lösung: BP 14.0 mit Stelvio 1.0 geprüft.
Notation: 1.e4 d5 2.exd5 Dxd5 3.Dg4 Db3 4.Db4 Kd7 5.Sc3 Ke6 6.Lc4+ Ke5
7.d3 Kd4 8.Lg5 e5 9.f4 Ke3 10.Kf1 Kd2 11.Kf2 Lc5+ 12.Kf3 Lf2 13.Tf1 Le1
14.Se4+ Kd1 15.Dd2# (2023-07-22)
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: Stelvio 1.4
FEN: rnb3nr/ppp2ppp/8/4p1B1/2B1NP2/1q1P1K2/PPPQ2PP/3kbRNR
Input: A.Buchanan, 2021-05-17
Last update: Silvio Baier, 2023-08-15 more...
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A.Buchanan (11)