Die Schwalbe

20 problem(s) found in 3987 milliseconds (displaying 20 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT A='Reich, Hans-Peter' AND S='The Hopper Magazine'] [download as LaTeX]

1 - P1398779
Andrew Buchanan
AA006 The Hopper Magazine I01 24/12/2021
P1398779
(12+5) cooked
h=3*

play all play one stop play next play all
Cook: Set: 1. ... Th1 2. Ka1 Dg1/Tg1 3. Ka2 Df1=/Th1=
Main: 1. Ka1 Th1 2. Ka2 Dg1/Tg1 3. Ka1 Df1=/Th1=
A.Buchanan: Oops! Vlaicu Crisan informed me of a bug in the forward play. Not so easy to fix, but think I've managed. Sent back to Vlaicu, and will republish in The Hopper. (2022-12-03)
comment
Keywords: Draw by repetition, Superseded by (P1408741)
Genre: Retro, Fairies
FEN: 8/p7/8/8/8/P4P1P/kPPPPRPr/2KnrQR1
Input: A.Buchanan, 2022-01-31
Last update: Miguel Ambrona, 2023-07-26 more...
2 - P1398780
Andrew Buchanan
AA007 The Hopper Magazine I01 24/12/2021
P1398780
(16+15)
Drawn game. PG in 9.0
Moldenhauer: Computerprüfung: C- oder Cooked Stelvio 1.4 in 1 Sekunde.
Die Diagrammstellung ist verschieden erreichbar.
Hier 2 Möglickeiten:
1.Sa3 d5 2.Sb1 Kd7 3.f3 De8 4.Kf2 e5 5.Kg3 De6 6.Kh4 Dg6
7.Kh3 e4 8.fxe4 f6 9.e5 Ke8+
1.Sa3 d5 2.Sb1 Dd6 3.f3 Da6 4.Kf2 Sd7 5.Kg3 Dg6+ 6.Kh4 e5
7.Kh3 e4 8.fxe4 f6 9.e5 Sb8+ (2023-07-29)
A.Buchanan: Hi Moldenhauer this problem is sound. You are forgetting the constraint: "Drawn game". (2023-07-29)
Moldenhauer: Hi Andrew, ich habe deshalb nur die Diagrammstellung angegeben.
Ich hoffe Andrew ist erlaubt! Mein Vorname ist Klaus. (2023-07-29)
A.Buchanan: Hi Klaus nice to meet you, thanks for all your work. The point of HC+ is that it combines human & computer logic intelligently. It makes zero sense to solve robotically for 9.0. It is definitely valuable to solve this kind of stipulation (1) as PG in 5.0, and then (2) as PG A-B for 2.0. Apparent duals can then be resolved through reasoning about castling, e.p. and premature draw. (2023-07-29)
comment
Keywords: Draw by repetition, Unique Proof Game, Constrained problem, Castling, En passant (not!)
Genre: Retro
FEN: rnb1kbnr/ppp3pp/5pq1/3pP3/8/7K/PPPPP1PP/RNBQ1BNR
Input: A.Buchanan, 2022-01-31
Last update: Miguel Ambrona, 2023-07-26 more...
3 - P1401711
Andrew Buchanan
OP008 The Hopper Magazine I01 24/12/2021
"Ak ja, retten, retten; hvad hjælper det, at du har retten, når du ikke har nogen magt?"
P1401711
(3+3) C+
h#2.5 (2 solutions)
Position after Black's 5,696th move
1. ... Se6 2. Th2 Ta8 3. Th7 Txe8#
1. ... Txa2 2. Lg6 Tg2 3. Lh7 Sf7#
not 1. ... 0-0-0 2. Lg6 Tg1 3. Lh7 Sf7#?? (game just ended by 50M)
play all play one stop play next play all
A full solution is really too big for PDB, but it is available at https://www.thehoppermagazine.com/AA084
Henrik Juel: solutions
1...Sg5-e6 2.Ra2-h2 Ra1-a8 3.Rh2-h7 Ra8*e8 #
1...Ra1*a2 2.Be8-g6 Ra2-g2 3.Bg6-h7 Sg5-f7 #
not 1...0-0-0? 2.Be8-g6 Rd1-g1 3.Bg6-h7 Sg5-f7 #
because White has lost his right to castle, as Andrew will explain, I hope... (2023-07-29)
A.Buchanan: White has not necessarily lost the right to castle, but if he can castle then the 50M rule triggers before the mate can be executed. It is pretty complicated, sorry. (2023-07-29)
A.Buchanan: We don't do mottoes much these days. Mrs Baird was a big fan. On page 301 of the July 1916 Chess Amateur P.H. Williams wrote:
"I think it was Mrs Baird who did more to search Shakespeare for accidental (or deliberate) reference to chess, since all her retractors had Shakespearean mottoes, and her knowledge of the Avonian bard was obviously extensive. Her example was followed by other composers of retractors, who considered such positions would be incomplete without some reference to the poet."
But there are other great playwrights, and Asteroid 5696 was named after one such, whose bitter quotation accurately states this problem's theme. (2023-07-31)
Henrik Juel: The citation is by danish philosopher Søren Kierkegaard (1813-1855) and means something like
Oh yes, to be right, to be right; it does not help much that you are right, when you have no power. (2023-07-31)
Henrik Juel: Asteroid 5696 is named Ibsen after the norwegian playwright Henrik Ibsen (1828-1906), who must have borrowed the citation from Søren Kierkegaard (2023-07-31)
A.Buchanan: Thanks for this Henrik - I resolved the question here: https://philosophy.stackexchange.com/questions/101229/did-ibsen-originate-this-statement
Beyond the castling try, the other innovation here is in the solution beginning 1...Se6. Castling convention and 50M I think are trying to combine by Retro Strategy (being optimistic about 50M rights like we are with castling, rather than pessimistic like we are with ep). (2023-08-04)
more ...
comment
Keywords: Aristocrat, Miniature, 50 move rule, Castling, Exchange of roles (T/S, Guard/Mate), Chumakov theme (l/t, simplified), Retro Strategy (RS), Model mate (2), Constrained problem
Genre: h#, Retro
Computer test: HC+ Popeye 4.61 and analysis
FEN: 4b2k/8/8/6N1/8/8/r7/R3K3
Reprints: AA084 The Hopper Magazine I04 13/07/2023
Input: A.Buchanan, 2022-06-09
Last update: A.Buchanan, 2023-08-27 more...
4 - P1405296
Andrew Buchanan
Andrey Frolkin

AA042 The Hopper Magazine I02 23/06/2022
P1405296
(13+9)
First move of wRb2?
R: 1. g2xBh3 h4-h3 2. Te2-b2 h5-h4 3. 0-0-0-0-0-0 h6-h5 4. e7-e8=T h7-h6 5. f6xDe7,f6xL/Se7
play all play one stop play next play all
https://drive.google.com/file/d/1e6e77hAXxKajrJdu5Rd3hdsA0k3QSH9D/view
Thanks to Mario Richter for finding a bug, now fixed by switching pawns g-h files
more ...
comment
Keywords: Type A, First Move?, Staugaard castling, Economy record
Genre: Retro, Fairies
FEN: n2N4/PPkp1pp1/PNBp4/Bp1p4/1p6/4K2P/PR5P/7R
Input: James Malcom, 2022-10-20
Last update: A.Buchanan, 2023-07-27 more...
5 - P1406456
Werner Keym
OP016 The Hopper Magazine I02 25/06/2022
corrects Keym Schach-Echo 1967 / Die Schwalbe 2007
P1406456
(15+5)
#1 AP
b) - Lh8
a) 1. ... bxa3ep 2. Dc3#!
(2. 0-0#?)
1. 0-0#? (rights lost)

b) 1. ... bxa3ep 2. 0-0#!
(2. Dc3#?)
1. 0-0#? (Black to move if rights remain)
play all play one stop play next play all
a) White & Black have made 11+1 pawn captures, accounting for all missing material. bPa captured to b file (must be bPb2 now, to get behind wPb) so bPh promoted on h1, to supply balance. Therefore White cannot castle. Black has no last move, so by Article 15 we can conclude that Black has the move. The only way to give Black a move is R: 1. a2-a4 a3xNb2. Therefore ep is legal, and indeed that is Black's only move. After 0... bxa3ep, White mates with 1.Dc3#! not 1.0-0#? since castling is illegal. AP is not used in this twin, but is available as a condition in order to make twins as similar as possible, and show that the difference in behaviour comes just from wBh8, not from conditions.
b) Now there is a second white unit missing, which gives more retro possibilities. One case is that bPh might have captured to g-file, to promote (or to be captured if original bPg promoted), so White may retain castling rights, but in this case it must be Black to move. So 1.0-0#? doesn't work as a solution. Alternatively, if White has lost castling rights, Black might have just played c2xNb1=R, or c3xNb2 or a/c5xb4. So in this scenario we cannot prove unconditionally that it's really Black to play.
However, under adversarial AP, White makes a double claim: firstly that it is Black to move (AP Type Keym), and secondly that ep is legal (AP Type Petrovic). If White retains castling rights, then both of these items are correct, and the ep must be bxa3 not bxc3. So White mates with 1.0-0#! for AP justification, not 1.Dc3#?.
corrects P1108454
Henrik Juel: here is my guess
a) 0... bxa3ep 1.Dc3#
b) 1.0-0# (2022-12-05)
A.Buchanan: Comments on the proposed solution welcome (2023-08-21)
more ...
comment
Keywords: a posteriori (AP) (Type Keym), a posteriori (AP) (type Petrovic), No legal last move for Black, En passant as key, Castling, Cant Castler (wk)
Genre: Retro
FEN: 7B/2P5/3P4/1P2Q3/PpP1N3/1P1P4/1p1RBP2/brk1K2R
Input: A.Buchanan, 2022-12-05
Last update: A.Buchanan, 2023-08-22 more...
6 - P1409850
Andrew Buchanan
H1327 Problem Paradise 97, p. 11, 01-03/2022
P1409850
(3+13) C+
h#3
b) sSb5<->sBa7
a) 1. ... axb7 2. Kc7 Kd5 3. Kd8 b8=D#
b) 1. Tc7 e7 2. Kd7 Kd5 3. Kc8 e8=D#
play all play one stop play next play all
Unique set play retro try in the retro twin s). 1.Kc7 axb7 2.Kd8 b8=D#. Zero set play in b).
All pieces are necessary for soundness in at least one twin except for sBa4 ("the manager").
First publication had typo in stipulation
Henrik Juel: If you disregard retro considerations and blindly test with Popeye 4.61, you get lots of cooks in part a) and 1.Re7-c7 e6-e7 2.Kc6-d7 Ke4-d5 3.Kd7-c8 e7-e8=Q #
in part b) (2023-05-20)
Henrik Juel: Part b) is OK, because last move could be Kd4-e4, and a normal h#3 ensues
But in part a) White (not Black as intimated by the Keyword) has no last move, and the stipulation changes to h#2.5 with the solution 1...a6*b7 2.Kc6-c7 Ke4-d5 3.Kc7-d8 b7-b8=Q #
Nice symbol problem (2023-05-20)
more ...
comment
Keywords: No legal last move for White, Character problem (PP)
Genre: h#, Retro
Computer test: HC+ Popeye 4.61 and simple analysis
FEN: 8/pp2rp2/P1k1P1p1/pn2nr2/p3K3/q3b3/8/8
Reprints: OP015 The Hopper Magazine I02 25/06/2022
Input: A.Buchanan, 2023-05-20
Last update: A.Buchanan, 2023-12-06 more...
7 - P1411123
Anirudh Daga
SS075 The Hopper Magazine I03 30/12/2022
P1411123
(16+12) C+
PG in 15.5
1. c2-c4 g7-g6 2. Dd1-a4 Lf8-g7 3. Da4xa7 Lg7-d4 4. Da7xb8 Sg8-f6 5. Db8xc8 0-0 6. Dc8xd8 Ta8-a4 7. Dd8-a8 Ta4-b4 8. Da8-a4 Tf8-a8 9. Da4-d1 Ta8-a3 10. h2-h4 Ta3-h3 11. a2-a4 Kg8-f8 12. a4-a5 Kf8-e8 13. a5-a6 Ke8-d8 14. a6-a7 Kd8-c8 15. Ta1-a6 Tb4-a4 16. b2-b4
play all play one stop play next play all
Henrik Juel: Nice proof game, Anirudh, starting with a long march by Dd1 and ending with one by Kc8 via g8 (2023-07-25)
more ...
comment

Genre: Retro
Computer test: C+ Stelvio 1.31, no solution in 15.0
FEN: 2k5/Pppppp1p/R4np1/8/rPPb3P/7r/3PPPP1/1NBQKBNR
Input: Miguel Ambrona, 2023-07-25
Last update: Silvio Baier, 2023-08-15 more...
8 - P1411151
Andrew Buchanan
SS101 The Hopper Magazine I04 13/07/2023
P1411151
(12+11) C+
PG in 8.0
1. b4 g5 2. b5 g4 3. b6 g3 4. bxc7 gxh2 5. cxb8=T hxg1=D 6. Txb7 Dxg2 7. Txd7 Dd5 8. Txd8+ Dxd8
play all play one stop play next play all
more ...
comment
Keywords: Homebase, Unique Proof Game
Genre: Retro
Computer test: C+, Jacobi v0.7.5
FEN: r1bqkbnr/p3pp1p/8/8/8/8/P1PPPP2/RNBQKB1R
Input: Miguel Ambrona, 2023-07-25
Last update: A.Buchanan, 2023-07-27 more...
9 - P1411152
Joachim Hambros
SS103 The Hopper Magazine I04 13/07/2023
P1411152
(15+14) C+
PG in 18.5
1. c2-c4 Sg8-f6 2. Dd1-c2 Sf6-d5 3. Dc2-g6 Sd5-c3 4. d2xc3 h7xg6 5. Lc1-g5 Th8-h3 6. Lg5xe7 Th3-d3 7. Le7-a3 Lf8-b4 8. h2-h4 Lb4-a5 9. La3-f8 d7-d6 10. h4-h5 Dd8-d7 11. h5-h6 Dd7-a4 12. h6-h7 Lc8-d7 13. h7-h8=D Ld7-b5 14. Dh8-h6 Sb8-d7 15. Lf8-e7 Ta8-d8 16. Le7-g5 Ke8-f8 17. Lg5-c1 Kf8-g8 18. Dh6-d2 Sd7-f8 19. Dd2-d1
play all play one stop play next play all
Henrik Juel: Nice round-trip by Lc1
Dd1 is a Pronkin queen (2023-07-25)
more ...
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: C+ Stelvio 1.31, no solution in 18.0
FEN: 3r1nk1/ppp2pp1/3p2p1/bb6/q1P5/2Pr4/PP2PPP1/RNBQKBNR
Input: Miguel Ambrona, 2023-07-25
Last update: Silvio Baier, 2023-08-15 more...
10 - P1411211
Werner Keym
OP035 The Hopper Magazine I04 13/07/2023
P1411211
(3+11)
Last move?
R: 1. Ke8xDf7#
play all play one stop play next play all
Version of Die Schwalbe 1990, see P0000180
SCHRECKE: vergleiche: P0000180 (2023-07-25)
more ...
comment
Keywords: Last Move? (KxD), Type C, Type M
Genre: Retro
FEN: nBk2Rn1/pp1ppKp1/1p3p1p/8/8/8/8/8
Input: Miguel Ambrona, 2023-07-25
Last update: A.Buchanan, 2023-07-27 more...
11 - P1411238
Lukas Schwab
SS102 The Hopper Magazine I04 13/07/2023
P1411238
(15+15) C+
PG in 9.5
1. e3 d6 2. Dh5 Lg4 3. Lb5 Dd8-d7 4. d3 Sa6 5. Sd2 0-0-0 6. Sdf3 Kb8 7. Ld2 Dc8 8. 0-0-0 Td7 9. Sh4 Lxd1 10. Dxd1
play all play one stop play next play all
Henrik Juel: C+ Euclide 1.01, no solution in 9.0 (2023-07-26)
more ...
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: C+ Euclide 1.01, no solution in 9.0
FEN: 1kq2bnr/ppprpppp/n2p4/1B6/7N/3PP3/PPPB1PPP/2KQ2NR
Input: Miguel Ambrona, 2023-07-26
Last update: A.Buchanan, 2023-07-28 more...
12 - P1411240
Min Hang Kyaw
SS105 The Hopper Magazine I04 13/07/2023
P1411240
(12+10)
Last 7 single moves?
R: 1. h2xLg3 Lh4-g3 2. h5-h6 Le7-h4 3. h4-h5 Lf8-e7 4. h3-h4 (e7xDTSd6)
play all play one stop play next play all
more ...
comment
Keywords: Last Moves? (7)
Genre: Retro
FEN: Rb6/rp1p1pp1/pK1p3P/p7/1k6/1P1PP1P1/1P1PP3/N1B5
Input: Miguel Ambrona, 2023-07-26
Last update: A.Buchanan, 2023-07-28 more...
13 - P1411248
Alexey Gasparyan
SS073 The Hopper Magazine I03 30/12/2022
P1411248
(11+5) C+
H=2 (5 solutions)
1. Kd8 gxf8=L 2. Sd6+ Lxd6=
1. Sh8 gxh8=D 2. Txb8 Dxb8=
1. Sd8 gxf8=T 2. Sxb7 d8=T=
1. Te8 g8=S+ 2. Kf8 dxe8=S=
1. Th8 gxh8=L 2. Kf8 d8=L=
play all play one stop play next play all
more ...
comment

Genre: Retro
Computer test: C+ Popeye 4.61
FEN: 1N3r2/RP1PknPP/2B1pR2/4p1B1/4K3/5P2/8/8
Input: Miguel Ambrona, 2023-07-26
Last update: A.Buchanan, 2023-07-28 more...
14 - P1411253
Hiroaki Maeshima
SS074 The Hopper Magazine I03 30/12/2022
P1411253
(9+2) C+
H#2 (try)
1. Dxa2 Th4 2. Da4 Txa4#
1. Dxb2 0-0?? 2. Da3 Lxa3# because Ke1 moved to let Ka1 in
play all play one stop play next play all
more ...
comment
Keywords: Minimal
Genre: h#, Retro
Computer test: HC+ trivial retro analysis & Popeye v4.87
FEN: 8/8/8/7P/8/2N5/PP2PP2/kqB1K2R
Input: Miguel Ambrona, 2023-07-26
Last update: A.Buchanan, 2023-07-28 more...
15 - P1411259
Joachim Hambros
SS076 The Hopper Magazine I03 30/12/2022
P1411259
(12+16) C+
PG in 16.5
1. c4 Sf6 2. Dc2 Sd5 3. Dg6 hxg6 4. f4 Th3 5. Kf2 Tc3 6. Sh3 Txc1 7. Kf3 Txf1 8. Ke4 Tf3 9. Sf2 Th3 10. Kd4 Th8 11. h4 f5 12. h5 Kf7 13. h6 gxh6 14. Kd3 Lg7 15. Kc2 Tf8 16. Kd1 Kg8 17. Ke1
play all play one stop play next play all
Henrik Juel: Good proof game with long round-trip by Ke8, cross-capture by [Pg7,h7], and fake castling (2023-07-26)
more ...
comment

Genre: Retro
Computer test: C+ Euclide 1.01, no solution in 16.0
FEN: rnbq1rk1/ppppp1b1/6pp/3n1p2/2P2P2/8/PP1PPNP1/RN2K2R
Input: Miguel Ambrona, 2023-07-26
Last update: A.Buchanan, 2023-07-28 more...
16 - P1411261
Silvio Baier
SS078 The Hopper Magazine I03 30/12/2022
P1411261
(13+13) C+
PG in 27.0
1. f2-f4 h7-h5 2. f4-f5 h5-h4 3. f5-f6 h4-h3 4. f6xe7 h3xg2 5. e7xd8=L Lf8-b4 6. h2-h4 c7-c5 7. Ld8-b6 a7xb6 8. Th1-h3 Ke8-d8 9. Th3-c3 Kd8-c7 10. Sg1-h3 g2-g1=D 11. h4-h5 Dg1-g5 12. h5-h6 Dg5-d8 13. h6-h7 Sg8-h6 14. a2-a3 Th8-e8 15. h7-h8=D g7-g5 16. Dh8-f6 g5-g4 17. Df6-c6+ b7xc6 18. a3xb4 Lc8-a6 19. Ta1-a3 La6-d3 20. Ta3-b3 Ld3-h7 21. e2-e4 Ta8-a3 22. Lf1-a6 g4-g3 23. d2-d3 g3-g2 24. Lc1-d2 g2-g1=L 25. Ke1-f1 c5-c4 26. Ld2-e1 Lg1-c5 27. Sh3-f2 Lc5-f8
play all play one stop play next play all
Henrik Juel: solution
1.Pf2-f4 Ph7-h5 2.Pf4-f5 Ph5-h4 3.Pf5-f6 Ph4-h3 4.Pf6xe7 Ph3xg2
5.Pe7xd8=B Bf8-b4 6.Ph2-h4 Pc7-c5 7.Bd8-b6 Pa7xb6 8.Rh1-h3 Ke8-d8
9.Rh3-c3 Kd8-c7 10.Sg1-h3 Pg2-g1=Q 11.Ph4-h5 Qg1-g5 12.Ph5-h6 Qg5-d8
13.Ph6-h7 Sg8-h6 14.Pa2-a3 Rh8-e8 15.Ph7-h8=Q Pg7-g5 16.Qh8-f6 Pg5-g4
17.Qf6-c6+ Pb7xc6 18.Pa3xb4 Bc8-a6 19.Ra1-a3 Ba6-d3 20.Ra3-b3 Bd3-h7
21.Pe2-e4 Ra8-a3 22.Bf1-a6 Pg4-g3 23.Pd2-d3 Pg3-g2 24.Bc1-d2 Pg2-g1=B
25.Ke1-f1 Pc5-c4 26.Bd2-e1 Bg1-c5 27.Sh3-f2 Bc5-f8 (2023-07-27)
Henrik Juel: Superb technique
Double Frolkin-Ceriani (LD) and double Pronkin (Dd8,Lf8) (2023-07-27)
more ...
comment
Keywords: Unique Proof Game, Pronkin Theme (dl), Ceriani-Frolkin Theme (DL)
Genre: Retro
Computer test: C+ Stelvio 1.4, no solution in 26.5
FEN: 1n1qrb2/2kp1p1b/Bpp4n/8/1Pp1P3/rRRP4/1PP2N2/1N1QBK2
Input: Miguel Ambrona, 2023-07-26
Last update: Silvio Baier, 2023-08-15 more...
17 - P1411262
Silvio Baier
SS077 The Hopper Magazine I03 30/12/2022
P1411262
(12+12) C+
PG in 23.0
1. f2-f4 h7-h5 2. f4-f5 h5-h4 3. f5-f6 h4-h3 4. f6xe7 h3xg2 5. e7xf8=L Th8-h3 6. Lf8-b4 Th3-b3 7. h2-h4 g7-g5 8. Sg1-h3 g2-g1=L 9. h4-h5 Lg1-c5 10. h5-h6 Ke8-f8 11. h6-h7 Kf8-g7 12. h7-h8=T Lc5-f8 13. Th8-h6 c7-c5 14. Th6-c6 d7xc6 15. a2xb3 Dd8-d3 16. e2xd3 g5-g4 17. Dd1-f3 g4-g3 18. Lf1-e2 g3-g2 19. Ke1-f2 c5xb4 20. Th1-d1 g2-g1=T 21. Ta1-a3 Tg1-h1 22. Kf2-g3 b4xa3 23. Sh3-f2 Th1-h8
play all play one stop play next play all
Henrik Juel: solution
1.Pf2-f4 Ph7-h5 2.Pf4-f5 Ph5-h4 3.Pf5-f6 Ph4-h3 4.Pf6xe7 Ph3xg2
5.Pe7xf8=B Rh8-h3 6.Bf8-b4 Rh3-b3 7.Ph2-h4 Pg7-g5 8.Sg1-h3 Pg2-g1=B
9.Ph4-h5 Bg1-c5 10.Ph5-h6 Ke8-f8 11.Ph6-h7 Kf8-g7 12.Ph7-h8=R Bc5-f8
13.Rh8-h6 Pc7-c5 14.Rh6-c6 Pd7xc6 15.Pa2xb3 Qd8-d3 16.Pe2xd3 Pg5-g4
17.Qd1-f3 Pg4-g3 18.Bf1-e2 Pg3-g2 19.Ke1-f2 Pc5xb4 20.Rh1-d1 Pg2-g1=R
21.Ra1-a3 Rg1-h1 22.Kf2-g3 Pb4xa3 23.Sh3-f2 Rh1-h8 (2023-07-27)
Henrik Juel: Very impressive
Double Frolkin-Ceriani (LT) and double Pronkin (Lf8,Th8) (2023-07-27)
more ...
comment
Keywords: Unique Proof Game, Pronkin Theme (tl), Ceriani-Frolkin Theme (TL)
Genre: Retro
Computer test: C+ Stelvio 1.4, no solution in 22.5
FEN: rnb2bnr/pp3pk1/2p5/8/8/pP1P1QK1/1PPPBN2/1NBR4
Input: Miguel Ambrona, 2023-07-26
Last update: Silvio Baier, 2023-11-11 more...
18 - P1411296
Joachim Hambros
SS045 The Hopper Magazine I02 25/6/2022
P1411296
(12+16) C+
PG in 27.0
1. e2-e4 Sg8-f6 2. Dd1-h5 Th8-g8 3. Dh5-h6 g7xh6 4. e4-e5 Tg8-g4 5. e5-e6 Tg4-h4 6. g2-g4 Lf8-g7 7. g4-g5 Sf6-g4 8. g5-g6 Lg7-f6 9. g6-g7 Lf6-g5 10. g7-g8=S Ke8-f8 11. Sg8-f6 e7xf6 12. e6-e7+ Kf8-g7 13. e7-e8=S+ Kg7-g6 14. Se8-d6 c7xd6 15. c2-c4 Dd8-b6 16. c4-c5 Db6-b3 17. c5-c6 b7-b5 18. c6-c7 Lc8-b7 19. c7-c8=S Lb7-g2 20. Sc8-b6 a7xb6 21. a2-a4 Ta8-a7 22. a4-a5 Ta7-c7 23. a5-a6 Tc7-c4 24. a6-a7 Tc4-a4 25. a7-a8=D Ta4-a6 26. Da8-f3 Sb8-c6 27. Df3-d1 Lg2-d5
play all play one stop play next play all
Henrik Juel: Very good proof game
Triple Frolkin-Ceriani (SSS) and Pronkin (Dd1)
White homebase and nice play by [Ta8,Lc8] (2023-07-27)
Joachim Hambros: Main content anticipated by P0008910 (2024-02-14)
more ...
comment
Keywords: Unique Proof Game, Ceriani-Frolkin Theme (SSS), Pronkin Theme (Dd1), Homebase
Genre: Retro
Computer test: C+ Stelvio 1.4, no solution in 26.5
FEN: 8/3p1p1p/rpnp1pkp/1p1b2b1/6nr/1q6/1P1P1P1P/RNBQKBNR
Input: Miguel Ambrona, 2023-07-27
Last update: A.Buchanan, 2024-02-14 more...
19 - P1411299
Jan Hein Verduin
SS046 The Hopper Magazine I02 25/6/2022
P1411299
(8+4) C+
H#1.5
1. ... d8=S 2. a1=T gxh8=D#
R: 1. b2-b1=L
play all play one stop play next play all
Yuri Bilokin: more economical -wBg5, -wSh7, -wPa3, bQh8(-bRh8) 6kq/3P1NP1/8/8/8/1K6/p1P5/1b6 (5+4) H#1.5

1...d8=S 2.a1=R gxh8=Q# (MM)

Tempo promotion
Promotion (QSr, 2, 1)
Tempo move (bP, waiting, type 1)
Model mate × 1 (2023-08-04)
Henrik Juel: C+ Popeye 4.61 (2023-08-04)
A.Buchanan: heh Yuri the 4th promotion is in the retraction: R: 1. b2-b1=L. The other pieces serve to force retro-uniqueness. (2023-08-04)
Olaf Jenkner: Vergleiche mit P1190770 oder P1190771 (2023-08-04)
A.Buchanan: Very nice! These remind me of my own P1408845. (2023-08-05)
comment
Keywords: Allumwandlung, Last Move?
Genre: h#, Retro
Computer test: HC+ forward popeye v4.61 retro thinking
FEN: 6kr/3P1NPN/8/6B1/8/PK6/p1P5/1b6
Input: Miguel Ambrona, 2023-07-27
Last update: A.Buchanan, 2023-08-04 more...
20 - P1411300
Joachim Hambros
SS044 The Hopper Magazine I02 25/6/2022
P1411300
(14+16)
PG in 15.5
1. h4 a5 2. Th3 a4 3. Tb3 axb3 4. a4 Ta6 5. a5 Td6 6. a6 Td4 7. a7 d5 8. Ta6 Kd7 9. Tg6 hxg6 10. a8=T Th5 11. Ta1 Te5 12. h5 Tee4 13. h6 e5 14. h7 Ke6 15. h8=T Dd6 16. Th1
play all play one stop play next play all
Moldenhauer: Computerprüfung: C+ Stelvio 1.4 in 1 Sekunde,
Keine Lösung: BP 15.0.
Notation: 1.h4 a5 2.Th3 a4 3.Tb3 axb3 4.a4 Ta6 5.a5 Td6 6.a6 Td4
7.a7 d5 8.Ta6 Kd7 9.Tg6 hxg6 10.a8=T Th5 11.Ta1 Te5 12.h5 Tee4
13.h6 e5 14.h7 Ke6 15.h8=T Dd6 16.Th1
Bitte Player einrichten! Danke (2023-08-17)
Henrik Juel: The main content seems to be double Pronking: Ta1 and Th1 (2023-11-14)
comment
Keywords: Unique Proof Game, Quasi-symmetrical position, Homebase
Genre: Retro
FEN: 1nb2bn1/1pp2pp1/3qk1p1/3pp3/3rr3/1p6/1PPPPPP1/RNBQKBNR
Input: Miguel Ambrona, 2023-07-27
Last update: Silvio Baier, 2023-11-14 more...
Show statistic for complete result. Show search result faster by using ids.

https://pdb.dieschwalbe.de/search.jsp?expression=COMMENTDATE%3E%3D20220810+AND+G%3D%27Retro%27+AND+NOT+A%3D%27Reich%2C+Hans-Peter%27+AND+S%3D%27The+Hopper+Magazine%27

The problems of this query have been registered by the following contributors:

A.Buchanan (5)
James Malcom (1)
Miguel Ambrona (14)