1014 problem(s) found in 1156 milliseconds (displaying 100 problem(s)).

1 - P0000198
Wolfgang Dittmann
Thomas Kolkmeyer

7170 Die Schwalbe 126 12/1990
P0000198
(12+12) cooked
KBP in 16.5, Stellung nach dem 17. Zug von Weiß.
Auf welchem Feld wurde die weiße Dame geschlagen?
Duellantenschach
b) Bg4 nach g2
c) Be7 nach g5
a) 1. Sc3 Sf6 2. Se4 Sd5 3. Sd6+ cxd6 4. Sf3 Sb4 5. Sd4 Sd3+ 6. cxd3 Sc6 7. Dc2 Sa5 8. Dxc8 Sb3 9. Dc4 Sxc1 10. Db3! Sxb3 11. Se6 Sd4 12. Sf4 Sf3+ 13. exf3 Da5 14. g4 Dg5 15. Sd5 Df6 16. Sxf6+ gxf6 17. b4
b) 1. Sc3 Sf6 2. Sa4 Sd5 3. Sb6 Sf6 4. Sxc8 Sd5 5. Sd6+ cxd6 6. Sf3 Sb4 7. Sd4 Sd3+ 8. cxd3 Sc6 9. Se6 Sd4 10. Sf4 Sf3+ 11. exf3 Da5 12. Da4! Dxa4 13. b3 Db4 14. Lb2 Dxf4 15. Lc3 Df6 16. Lxf6 gxf6 17. b4
c) 1. g4 g5 2. Sc3 Sh6 3. Se4 Sf5 4. Sf6+ exf6 5. Sh3 Sd4 6. Sf4 Sf3+ 7. exf3 Sc6 8. Sd5 Sa5 9. Sb6 Sb3 10. Sxc8 Sxc1 11. Sd6+ cxd6 12. De2+! Sxe2 13. b3 Sc1 14. b4 Sd3+ 15. cxd3 De7+ 16. Kd1 De1+ 17. Kxe1
play all play one stop play next play all
Cook: a) Dualistisch ab 7. Zug:
1. Sc3 Sf6 2. Se4 Sd5 3. Sd6+ cxd6 4. Sf3 Sb4 5. Sd4 Sd3+ 6. cxd3 Sc6 7. Se6 Sd4 8. Sf4 Sf3+ 9. exf3 Db6 10. b4 Db5 11. De2 Dc6 12. Dd1 Dxc1 13. Dxc1 Tb8! 14. Dxc8+ Txc8 15. Sd5 Ta8 16. Sf6+ gxf6 17. g4 (G. Wilts)
paul: b)1.Sc3 Sa6 2.Sb5 Sb4 3.Sd4 Sd3+ 4.cxd3 Sf6 5.Sf5 Sd5 6.Sd6+ cxd6 7.Sh3 Sb4 8.Sf4 Sc2+ 9.Qxc2 Qc7 10.Qb3 Qxc1+ 11.Qd1 Qc6 12.Qc2 Qf3 13.Qxc8+! Rxc8 14.exf3 Rd8 15.Sh5 Ra8 16.Sf6+ gxf6 17.b4 (Jacobi). So, wQ could be taken at c8. (2018-9-18)
paul: c)The position could be obtained even faster: 1.Sc3 Sh6 2.Se4 Sf5 3.Sf6+ exf6 4.Sh3 Sd4 5.Sf4 Sf3+ 6.exf3 g6 7.g4 g5 8.Sg6 Qe7+ 9.Sxe7 Sc6 10.Sxc8 Sd4 11.Sd6+ cxd6 12.Qe2+ Sxe2 13.b3 Sxc1 14.b4 Sd3+ 15.cxd3.(Jacobi) (2018-9-18)
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comment
Keywords: Castling (wgsg), Single Combat, Where was piece x captured?, Unique Proof Game
Genre: Retro, Fairies
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-2-7 more...
2 - P0000245
Karlheinz Bachmann
7513 Die Schwalbe 131 10/1991
6. Preis
Informalturnier 1991
PR: Dimitri Pronkin
P0000245
(2+1) C+
BP in 16,5
1. Sf3 e5 2. Sxe5 Df6 3. Sxd7 Dxb2 4. Sxf8 Dxa2 5. Sxh7 Dxb1 6. Txa7 Txh7 7. Txa8 Txh2 8. Txb8 Txg2 9. Txb7 Txf2 10. Txc7 Txe2+ Lxe2 11. Dxc1 0-0 12. Dxd2 Tfxf7 13. Dxe2 Txc8+ Kxf7 14. Txg8 Dxc2 15. Txg7+ Kxg7 16. Dxc2
play all play one stop play next play all
paul: Jacobi+ (in about 30 min) (2018-8-17)
comment
Keywords: Unique Proof Game, Massacre PG, Castling, Rex solus (s), Aristocrat
Genre: Retro
Computer test: Jacobi+
Reprints: 7513 Die Schwalbe 146, p. 453, 04/1994
feenschach 137, p. 371, 08-09/2000
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2018-9-7 more...
3 - P0000400
Waleri A. Liskowez
4295 Die Schwalbe 80 04/1983
P0000400
(14+9)
#2 BG
3 partial solutions in a specific order!

I 1. fxe6ep a try by the BG-logic (beruehrt-gefuehrt) with no
justification 1. ... 0-0-0/- 2. Qc4#/Rxg8# If rejected, the key must be
returned back:
II Unless the touched wP has a move:
1. Nxe5! (1. ... 0-0-0?? illegal)
If rejected again: the touched wP does have a move (ep!) and, thus, W must make it:
III 1. fxg6ep fxg6+ 2. f7#! (1. ... 0-0-0??)
NOT:
II 1. Nc5?? was illegal by the rule of touching chessmen.
(II 1. Kxe5?).
The last move g6(7)-g5 locks wRh8. ... Thus, castling implies ep
play all play one stop play next play all
A.Buchanan: Valery is one of the most rigorous and imaginative retro composers but very often I can’t follow his solutions as they omit too many intermediate steps. Here is an example. Can someone explain the details please? (2018-10-5)
VL: Indeed, some extra details need for the understanding, especially at present. Let me try to clarify a bit.
First of all, BG stands strongly instead of PRA. Restipulated as a PRA problem, this problem would have been soluble (of "Typ Oeffner", aka "a priori", with two partial solutions) but unsound since both 1.Sc5 and 1.Sxe5 solve if castling is illegal. BG always works with PRA-like problems (sound or not).
BG is a hybrid controversial genre that allows to find and justify partial solutions by means of some active actions (in the spirit of RS and AP!) that aren't necessarily legal moves at the moment when they are fulfilled. Namely, BG permits to introduce move attempts into the actual solution as if the moves were fulfilled OTB (of course only meaningful attempts are taken into account; in fact only ep captures or around). Such an attempt forces the referee/opponent to specify the prehistory: the attempt may be adopted (one partial solution), or it may be rejected as contradicting the prehistory of the position (another partial solution). However (contrary to usual PRA variations), in the latter case, the rejected move should be replaced by a move in accordance with the rule of touching pieces.
Now, it is assumed that any capture is made physically in exactly one way: both participating pieces are touched simultaneously...
It is worth adding to the provided solution that wrong (premature) would be the second try II 1.fxg6ep? since after rejection, White were forced to replace it by the capture of the touched bPg5 by an officer, with no mate!
In general, in my opinion, quite a natural logic. However, a very sophisticated scenario with the unexpected rejection of the second (not ep!) try of capturing Pe5. Simpler are my earlier BG-problems including ones considered in my old article Anwendung der `ber"uhrt-gef"uhrt'-Regel in Retroproblemen, Die Schwalbe, 1981, H.69. (2018-10-7)
A.Buchanan: Valery, I love you, but I don't find this sufficient. It is probably a good high level reminder if addressed to someone who basically understands BG,PRA,RS,AP intimately already. It has helped me to expand the definition of the Touch Move keyword. But it does not address my request to make the solution sufficiently detailed. My perspective is almost always to render our art comprenensible by intelligent newcomers from facebook, whatsapp, chess.com etc. It is insufficient to explain in terms of PRA,RS,AP, because those are insufficiently defined here in PDB. You said this is a complicated one: I will pick a simpler one, and have a go to solve that. If the best tutorial is in your 1981 article, maybe you can make that available online, or send it to me, and I will publicize it. Thanks so much! (2018-10-7)
comment
Keywords: Touch Move, Castling (sg), Promoted material on the board (L)
Genre: Retro, 2#
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-10-7 more...
4 - P0000849
Gerd Rinder
184 Die Schwalbe 4 04/1970
P0000849
(2+16)
#2 (RV)
1. Dxg7 oder 1. Dc7
play all play one stop play next play all
Eine der beiden schwarzen Rochaden ist unmöglich, da entweder wBa2 oder wBh2 auf a8/h8 umgewandelt haben müssen, um als Schlagobjekt zur Verfügung zu stehen.
Sally: °
Das Diagramm zeigt zwei Problemstellungen,eine mit zulässiger
s0-0. Die gesamte schwarze Mannschaft steht auf dem Brett. Die
sBB schlugen von rechts nach links 12 mal, dazu axb = 1,
zusammen 13 mal. Weiß vermisst zwar 14 Steine. doch konnten seine Randbauern nicht von den sBB geschlagen werden. Einer davon müsste sich umwandeln, um als Schlagobjekt dienen zu können, der andere fiel duech eine schwarze Figur. So wurde die s0-0 bei Umwandlung des wBh verwirkt (Stellung a), die
s0-0-0 bei Umwamdlung des wB5b (Stellung b). Jeweils eine Rochade bleibt zulässig.
a) 1. Dc7! (2. De7#) - Kf8, 2. Df7#.
.. 1. - Lf8,2. Dd7#; 0-0 unzulässig!
b) 1. Dxg7!(2. De7#) - Kd8, 2. Dd7#.
.. 1. - Th7,2. Dg8#; 0-0-0 unzulässig. (2018-8-29)
comment
Keywords: Castling (sksg), Partial Retro Analysis (PRA)
Genre: Retro
Reprints: Problem 148-151 11/1972
D19 feenschach 27, p. 27, 04/1975
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2018-9-7 more...
5 - P0000957
Theophilus Harding Willcocks
Die Schwalbe 1949
P0000957
(4+8)
Letzter Zug?
R: 1. a7xTb8=L
play all play one stop play next play all
Yoav Ben-Zvi: WBd8 can be replaced with a BN after moving BPg7 to f7 and BPh5 to h6. (2018-8-8)
A.Buchanan: Yes after all these years, I found this a few months ago, but when I told Thomas Brand, he said that Werner Keym had found it - one of a series of modifications through seeking to avoid non-standard material. (2018-8-12)
Henrik Juel: Werner's improvement can be found in his 'Eigenartige Schachprobleme' from 2010, p.196, dia 1.68 (2018-8-12)
A.Buchanan: I thought it was more recent (2018-8-12)
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comment
Keywords: Type A, Last Move? (BxT=L), Promotion in the retro play (L), Economy record, Non-standard material
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2018-8-9 more...
6 - P0002005
George Hume
6 British Chess Magazine 20/12/1893
P0002005
(11+9) cooked
s#1
R: 0. Bg2xSh1=S, dann 0. ... Tgxh1,Thxh1 1. Lxg2+ Txg2#
play all play one stop play next play all
Original solution text: Black has just played P from K Kt 7, taking Kt on R sq, claiming Kt double ch; but as the thereby discovers ch th his own K, White calls upon him to retract his move, and take the Kt legally, viz.: either RxKt, then White 1 BxP ch, RxB mate. (Frank Müller)
In modern notation: Black just played g2xSh1=S illegally. White asks him to retract this and to capture the knight legally, so Black then plays Tgxh1 or Thxh1. Either way White forces selfmate by 1. Lxg2+ Txg2#. (Henrik Juel)
Cook: Question: is this cooked? In "Retrograde Analysis" by Dawson and Hunsdorfer, this is given as one of several examples where both kings are apparently in check. In the solution, they give no mention of the choice of piece captured on h1, and on the next page compliment the problem as being "more plausible" and "sounder" than the other examples, because "in the latter other suppositions would explain the matter just as well". However I think that D&H missed something here. The pieces outside the SE corner only serve to try to force uniqueness of the illegal move, indicated in the original solution.
A.Buchanan: Why was it S captured on h1? Could be anything even wL. E.g. R: 1. gxh1=S Sf3 2. ke1-f1 Dd2+ unwinds ok. Need e.g. to replace wBa4 with wLa5 to force gxSh1=S. Agreed? (2018-10-5)
Mario Richter: Andrew's suggestion doesn't force gxSh1, it's still possible to retract gxLh1. The resulting position (sPawn g2, wLa5+wLh1) can be explained by e.g.
wPawnCaps: b2-b4xBa5 d2xLe3 c2xSd3xLe4xDf5xTg6xSh7
wProms: a8=D a8=L
sPawnCaps: c7xDd6-d5xSe4xTf3xTg2
sProms: b1=T
White's last move after 1. ... g2xLh1 might have been 2. Db4-d2! Ke1-f1 3. Sd2-f3+ (2018-10-5)
A.Buchanan: Hi Mario, well nearly. So wSc2 instead of wLa5 will do it. (2018-10-5)
A.Buchanan: But no: R: 1. g2xh1=S S~f3 2. f3xg2 etc allows the retraction whatever the piece captured on h1. (2018-10-6)
A.Buchanan: I have a fix for this that Mario has verified (thank you!) and will try to publish. (2018-10-7)
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comment
Keywords: Illegal position, Touch Move, Retract illegal move, Joke
Genre: Retro, s#
Reprints: 7 Retrograde Analysis 1915
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-10-7 more...
7 - P0002051
Frideswide F. Rowland
Chess Fruits 1884
P0002051
(15+10)
Nehme 3 Einzelzüge zurück, dann #2 durch Weiß.
Weiß am Zug.
R: 1. ... 0-0 2. Ld5-a8 b7-b6, dann 1. ... Txh8+ Kd7 2. Dxc7#
play all play one stop play next play all
One of the best tests for thoroughly understanding problems of this class is to play a game up to the position. If the solver succeeds in doing so he will find that he has made the moves which are to be retracted, as such must be made to arrive at the position.
A better way is to give the problem an analytical examination, count the numer of captures made on either side, and note where each of the men played from, when and how they played, was it by capturing or otherwise. In the above problem we note that White lost a R only, which must have been captured by Black's KP [e7xf6], as its position shows that it made a capture. Black lost six men, the number off the board. His QP at Q7 [sBd2] did not play from B6 [c3xd2?] ass it made no capture, and consequently could not have moved last, neither could his QKtP [sBb7] or KP [sBe7], otherwise White's Bs could not be where they are. His KRP [sBh7] is off the board - our analysis will presently account for how it was captured. It is obvious that his R at R3 [sTa6] could not have played last, neither could R at RBsq [sTf8], as then the White K would have been in check, and it is not allowable to suppose that it remained in check.
Now the question is, Could Black's last move have been K from Rsq to Ktsq [sKh8-g8], moving from a check given by the R? This, we find on a further analysis, could not be, as the White R did not capture Black's KRP, consequently it could not have given check at the square it stands on. None of the White's pieces made a capture, the men were taken by his Pawns only, QP at QR5 [wBd2xc3xb4xa5] took three, and KP, KBP, and KRP took one each [wBe2xd3,wBf2xe3,wBh2xg3], none of them could have taken a P, consequently it follows that six Black pieces off the board were captured. There are only five Black pieces off the board, also a P, that P is Black's KRP [sBh7], which moved down the file to R8 [h1], was promoted to a Piece, and duly captured.
After all this we find that there is only one possible move Black could have made on his last, and that was Castles, this we accordingly retract. Having retracted it, we look to see what move White could have played for his last. All his men appear to be free, that is, not confined as Black's are, and it may appear difficult to determine what his last move was. In this case we look to see what Black's second last move could have been.
He did not play K or KR [sTh8] as he was able to castle after, neither could he have played QR or QP [sTa6,sBd2], it is also obvious that he did not play KPxR [sBe7xTf6], in consequence of the B at Q8 [wLd8 (außerdem auch, weil sonst der sLf8 als Schlagobjekt fehlt)], but if the B at QR8 [wLa8] were not there he could have played P to Kt3 [sBb7-b6]; consequently to allow of this second last move of Black's, White must retract a move made with his KB. There is only one square it could have played from and that is Q5. Therefore B at Q5 to R8 [wLd5-a8] was White's last move, and P at QKt2 to Kt3 [sBb7-b6] was Black's second last move.
White for his last move could not have made a capture with any of his Ps as Kts stand behind QP and KBP, the KP played early in the game to allow KB to play out, and KRP did likewise to allow Black's RP to play to R8.
The conditions of the problem do not ask for more than two of Black's moves to be retracted, yet the solver could demonsterate what his third last move was, viz., R to R3 [sT-a6].
On word as to the line of play leading up to the position. It may be considered very bad play, and it would be such were it played as a game, burt no matter how improbable the line of play may be, as long as the moves are possible they are sufficient to prove that the position can be arrived at and consequently sound.
Having retracted the moves in the problem [1. ... 0-0 2. Ld5-a8 b7-b6] we give, White mates by 1 RxRch, I K to Q2, 2 QxBP mate.
Frideswide F. Rowland in 'illustrated Science Monthly': "Retraction Problems take the form of end games in which one or more moves are to be retracted prior to playing to effect the required mate. There are two classes, which we will term legal and illegal. In the former the position is constructed in strict conformity with the laws of the game, and proof is shown that the moves to be retracted are those which have been actually made. Problems of this class are, as a rule, most ingenoiusly set, instructive to the solver, and worthy of more attention than is given to themby the composer. There is some difficulty in their construction which may perhaps be the cause of their not being more frequently composed.
In the latter class the move to be retracted may be any, according to the whim of the composern, which will allow of the mate which follows it. There is no proof to show what the last move was, it is left with the solver to assume that the move to be taken back was the one made. These problems are neither ingenious nor abstruse, and very much inferior to all other classes. They are constructed by simply setting up an ordinary direct mate position and misplacing one of the men, the replacing of which constitutes the retraction. If the conditions of such a problem is 'Retract White´s last move and then White to play and mate', it simply means White is to make two moves in succession. We dismiss this class as one unworthy of further attention and give our solvers an illustration of the legal Retraction Problem."
Henrik Juel: -1... 0-0 -2.Ld5 b6, 1.Txh8+ Kd7 2.Dxc7#, although Black has the move! (2004-3-8)
A.Buchanan: Maybe the idea was that by moving b6, Black was playing out of turn and the error when detected later had to be unwound. Black’s prior move had to have been R-a6 from somewhere. (2018-8-29)
A.Buchanan: Her remarks about retractor types are surprisingly direct. Mrs Baird wouldn’t have been too pleased to read that! (2018-8-30)
Henrik Juel: Andrew, on your first comment:
I believe that Frideswide just did not care about irregular move order, which is surprising in view of her 'modern' view on retro problems
On your second comment:
Yes, apparently there was no love lost between the two women; Frideswide was the better analyst, but Mrs. B managed to produce the beautiful Twentieth Century Retractor (I have seen the book) (2018-8-30)
A.Buchanan: @Henrik I disagree that "Frideswide just did not care about irregular move order". Actually I think she cared very much, with two problems here revolving around the idea of unwinding play out of turn. (2018-10-7)
comment
Keywords: Castling in the retro play (sk), Help retractor
Genre: Retro
Reprints: Illustrated Science Monthly , p. 223, 06/1885
29B Retrograde Analysis 1915
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2018-9-7 more...
8 - P0002070
Joseph C. J. Wainwright
American Chess Bulletin 04/1912
P0002070
(7+2) C+
#3
1. b4+? Kb1 2. Lb3 Ka1 3. 0-0?
1. Lb3! Kb1 2. Kd1 Ka1 3. Kc2#
play all play one stop play next play all
Martin Ramsauer: Reprint: Schach-Echo 08/1936, Umschlag-Innenseite (Artikel "Die Scheinlösung" von Emil Ramin) (2018-8-23)
Henrik Juel: Kc1 entered via d2 or e1, so White may not castle
1.Lb3 Kb1 2.0-0?
C+ by Popeye 4.61 (2018-8-23)
comment
Keywords: Cant Castler, Castling (wk)
Genre: Retro
Computer test: Popeye 4.61
Reprints: 40 Retrograde Analysis 1915
Schach-Echo 08/1936
2 L'Echiquier de Paris 01/1956
RA7 diagrammes 13 02/1975
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2018-9-11 more...
9 - P0002188
Gerd Wilts
169 Shortest Proof Games 11/1991
P0002188
(0+16) cooked
Ergänze die 16 weißen Steine so, daß eine dualfreie BP in 10,0 ensteht!
1. g3 Sf6 2. Lg2 Sd5 3. Kf1 Sb6 4. Ld5 Sc6 5. Kg2 Se5 6. Df1 Sg6 7. Kf3 Tg8 8. Dg2 Sh8 9. Kf4 Tb8 10. Df3 Sa8
play all play one stop play next play all
Cook: NL
1. d3 Sf6 2. Le3 Sd5 3. Kd2 Sb6 4. Kc3 Sc6 5. Sd2 Tb8 6. Tb1 Sa8 7. Lb6 Se5 8. e3 Sg6 9. Kc4 Tg8 10. c3 Sh8
1. e3 Sf6 2. Lc4 Sd5 3. Ke2 Sb6 4. Ld5 Sc6 5. c4 Se5 6. Sc3 Sg6 7. Kf3 Tg8 8. De2 Sh8 9. Kf4 Tb8 10. Sf3 Sa8
(François Labelle)
François Labelle: Is the solution supposed to be unique? Some variations of the intention also work, for example 10.De4 instead of 10.Df3. Some completely different solutions also work, for example
1.d3 Sf6 2.Le3 Sd5 3.Kd2 Sb6 4.Kc3 Sc6 5.Sd2 Tb8 6.Tb1 Sa8 7.Lb6 Se5 8.e3 Sg6 9.Kc4 Tg8 10.c3 Sh8
1.e3 Sf6 2.Lc4 Sd5 3.Ke2 Sb6 4.Ld5 Sc6 5.c4 Se5 6.Sc3 Sg6 7.Kf3 Tg8 8.De2 Sh8 9.Kf4 Tb8 10.Sf3 Sa8
There are 16 solutions in total, according to my computer. (2018-10-30)
Henrik Juel: Strange that Gerd did not notice the Df3/De4 'dual' (2018-10-30)
comment
Keywords: Unique Proof Game, Add pieces
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2018-11-2 more...
10 - P0002206
Samuel Loyd
Le Sphinx 10, p. 145, 01/10/1866
P0002206
(16+16)
#4
Schwarz kopiert die weißen Züge
3 Lösungen
1) 1. c4 c5 2. Da4 Da5 3. Dc6 Dc3 4. Dxc8#
2) 1. d4 d5 2. Dd3 Dd6 3. Df5 Df4 4. Dxc8#
3) 1. d4 d5 2. Dd3 Dd6 3. Dh3 Dh6 4. Dxc8#
play all play one stop play next play all
Als Schachgedicht "Loyd und der Pigeon" von C. Kupffer im Deutschen Wochenschach 24.11.1907 (Quelle: Sam Loyd und seine Schachaufgaben, 1926, S. 469)

Loyds englische Formulierung der Forderung: "If both parties make the same moves, how can the first player mate in four moves?"

in 'Ruy Lopez' abgedruckt in der Rubrik "Partidas de fantasia"

Originalabdruck in 'Le Sphinx' in der Rubrik: "Questions du Sphinx" mit folgendem Text:
"Deux joueurs sont en présence et se disposent à commencer une partie. Celui qui les Noirs ne connaît rien du jeu; mais, après s'être donné comme très-fort, il n'a pu se dispenser d'accepter le défi. Il s'est dit en lui-même qu'il lui suffirait, pour se tirer dèmbarras, de copier exactement tous les couops de son adversaire. Le joueur qui a les Blancs, ayant flairé le manége, jouen en conséquence et donne le mat au quattrième coup.
Comment, les Blancs ayant le trait et les Noirs jouant les mêmes trois premiers coups que leur adversaire, celui-ci peut-il obtenir le mat en quatre coups?"
Frank Müller: Im American Chess Journal 1876, Seite 48, wird nur die Lösung mit 1. c4 genannt. (2015-2-23)
Henrik Juel: The third solution is similar to the first, so they are probably a sort of cooks, later promoted to solutions.
1. d4 d5 2. Dd3 Dd6 3. Dh3 Dh6 4. Dxc8# (2015-2-23)
Henrik Juel: After the re-numbering it is solutions 2) and 3) that look like cooks (2015-2-23)
A.Buchanan: I don't think this is a fairy: I think it's just a conditional problem. If it was a fairy, then it would be cooked by e.g. 1. Sa3 Sa6 2. Sb5 Sb4 3. Sc7# since Black cannot continue to imitate White. (2018-9-2)
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comment
Keywords: Conditional problem, Construction task
Genre: n#
Reprints: American Chess Journal , p. 18, 15/06/1876
333 Chess Strategy [Loyd] , p. 174, 1878
Ruy Lopez 3 03/1897
Deutsches Wochenschach , p. 418, 24/11/1907
61-I Sam Loyd and his Chess Problems , p. 58, 1913
61/I Sam Loyd und seine Schachaufgaben 1926
feenschach 46, p. 81, 04-06/1979
K166 Problemkiste (94) 08/1994
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-9-2 more...
11 - P0002212
Anders Olson
7817 Springaren 57 06/1994
P0002212
(0+1)
h-retro-#2
Circe
b) wKg4, sKg1
c) wKb1, sKg6
d) wKe1, sKg7, sBf7
e) wKf8, wBh4, sKg6
A.Buchanan: There are today 1050 Circe problems in PDB which are not marked as fairies! Most are retros, and some poor person has already spent time and energy entering them under the mistaken assumption that a problem can only have 1 genre. And this is just 1 fairy condition. There is no point in us fixing them one by one because if Gerd ever returned to active maintenance of the site, he could fix the whole issue in a few minutes. Very frustrating. PDB is a great system but has a huge data quality issue. (2018-9-20)
Henrik Juel: This problem has the added difficulty that it is unclear what is expected by the solver
Possibly, in part a), the first white 'retraction' is just the addition of the white king somewhere (2018-9-20)
comment
Keywords: Help retractor, Circe, only Kings
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Frank Müller, 2009-10-7 more...
12 - P0002288
Ernest Clement Mortimer
Andrey Frolkin

Die Schwalbe 71 10/1981
P0002288
(15+13) C+
BP in 4,0
1. Sf3 e5 2. Sxe5 Se7 3. Sxd7 Sec6 4. Sxb8 Sxb8
play all play one stop play next play all
Version A. Frolkin. Die Originalfassung war mit sBd5 und e7.
Another version is reflected left-to-right.
YM: Possible symmetrical game:

BP in 4,0 (15+13) C+

1. Sc3 d5 2. Sxd5 Sd7 3. Sxe7 Sdf6 4. Sxg8 Sxg8

and even improved versions:

BP in 4,5 (13+15) C+

1.e3! (tempo) Sf6 2.e4 Sxe4 3.Se2 Sxd2 4.Sc3 Sxb1 5.Sxb1.

BP in 4,5 (13+15) C+

1.d3! (tempo) Sc6 2.d4 Sxd4 3.Sd2 Sxe2 4.Sf3 Sxg1 5.Sxg1. (2016-9-27)
A.Buchanan: These days, the style seems to be more common to mark as "BP in exactly 4.5", if a shorter proof game exists. (2018-10-1)
Olaf Jenkner: Isn't it anticipated by Schweig (P0002287) ? (2018-10-1)
A.Buchanan: Olaf: there is much to unwind here.
Firstly, this is Mortimer v Frolkin. There is no way to indicate the dependency in the Author fields. There is a field called "After" but there is no known way to search that field (see PDB FAQ examples). But putting this information in the Solution Text field is no answer, as this field too is unsearchable! I suggest that this information can best be placed in the Comment field (not UserComment).
Secondly, we don't know when Mortimer published his original: but his 12 publication dates here are between 1917 & 1935, while Schweig's composition is 1938.
It would be good to confirm the original publication date, but Schweig may have been anticipated. (2018-10-1)
comment
Keywords: Unique Proof Game, Homebase (2), Impostor (s)
Genre: Retro
Reprints: 100 Shortest Proof Games 11/1991
(5) diagrammes 103 10-12/1992
6 Introduction to Proof Games 03/2010
06b The Puzzling Side of Chess 8 18/08/2012
72 The Puzzling Side of Chess 141 16/12/2018
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-10-1 more...
13 - P0002302
Kostas Prentos
5426 feenschach 89 10-12/1988
Ehrende Erwähnung
P0002302
(14+13)
BP in 18,0
1. c4 Sc6 2. c5 Se5 3. c6 dxc6 4. Db3 Lh3 5. Kd1 Sg4 6. Kc2 Dd3+ 7. Kxd3 0-0-0+ 8. Ke4 f5+ 9. Kxf5 e6+ 10. Kxe6 Lc5 11. Kf7 Td6 12. Kf8 Se7+ 13. Dg8 Sh6 14. b3 Ld7 15. La3 Le8 16. Lb4 Td8 17. Sa3 Ld6 18. Tc1 Txg8#
play all play one stop play next play all
paul: 2 x Indian theme. (2018-11-9)
Henrik Juel: Euclide 1.01 ran for more than an hour, producing nothing
But the first 17.5 moves were tested correct in 8 minutes (2018-11-9)
Henrik Juel: Good proof game, considering its age
The black bishops go Lc8-h3-d7-e8 and Lf8-c5-d6 with interferences (including a swithcback by Td8) after their first moves to let Kf8 through (2018-11-9)
François Labelle: The last move must be Th8xg8, so Henrik's test in 17.5 moves plus three similar tests with white S, L, T at g8 (returning no solutions) should be considered an HC+ proof of correctness. (2018-11-10)
Henrik Juel: Good point, Francois
What does HC+ stand for? (2018-11-10)
Henrik Juel: ... never mind
It must mean correct by Computer testing with some (correct) Human reasoning added
If so, HC+ is the label we can use with many other retros, where human reasoning rules out a castling, etc. (2018-11-10)
comment
Keywords: Bahnung, Räumung, Unique Proof Game, Castling
Genre: Retro
Reprints: 128 Shortest Proof Games 11/1991
H23 FIDE Album 1986-1988 1995
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2014-11-6 more...
14 - P0002473
Waleri A. Liskowez
(5) Die Schwalbe 69 06/1981
P0002473
(7+3)
#2 BG

Quick solution:
Partial solutions in a specific order.
I 1. dxe6ep a try by the BG-logic (beruehrt-gefuehrt) with no
justification 1. ... 0-0-0 2. Bb7#. If rejected, the key must be returned back:
II 1. Nxe5 capturing the touched wP. (1. ... 0-0-0??)
NOT:
1. Nc5/Nxe5? 0-0-0!
II 1. Nc5/Ke6?? illegal by the rule of touching chessmen.
(II 1. Kxe5?)
Castling implies ep.

Detailed solution:
We don't know if Black castling or White e.p. capture are legal. We do know that if castling is legal, then so is e.p. because Black's last move was certainly e7-e5.
If e.p. is legal, then we have a solution, whether castling is legal or not.
1. dxe6ep! [2. Rf8#]
1. ... O-O-O 2. Bb7#
And we have a number of tries stopped only if castling is legal:
Try: 1. Ke6?/Sc5?/Sxe5? [2. Rf8#]
But 1. ... O-O-O!
So how to tie these facts together? We are going to try out moves, and this will force the opponent to specify the pre-history of the game in his favour. Each phase we will label with Roman numbers.
Suppose we try I) 1. dxe6ep. UNDER SO-CALLED "TOUCH-MOVE" BLACK CAN DEFEND BY DEFINING THE HISTORY OF THE GAME SUCH THAT A THREAT IS ILLEGAL, AND MUST BE RETRACTED. This way of resolving uncertainty is the key to the modern Touch Move convention. The confusing part is that it actually has relatively little to do with Touch Move! This is the secret that you weren't being told!
Now we have to retract 1. dxe6ep. What have we gained? Well we know that ep is illegal, and therefore castling doesn't work either. There is a price to be paid: that we must follow the touch move rule. So although it appears that all of II) 1. Ke6/Sc5/Sxe5 will work, in fact only the last, II) 1. Sxe5, is valid, by the touch-move rule. wPd5 can't move except for the e.p. which we know now isn't going to happen, but we must still capture bPe5 if possible.
Suppose that instead we had begun by trying one of I) 1. Ke6/Sc5/Sxe5. Black can defend by saying that castling is legal, and indeed just plays it I) 1. ... 0-0-0! There is no retraction possible, because none of the White moves were illegal.
A.Buchanan: See my solution. The penny has dropped and I will adjust the definition of Touch Move so that others aren't struggling in ignorance.
I still have no idea how "PR" ("PRA?") & "PF" fit into this problem: they don't seem to be necessary if BG is defined properly. Please can Valery confirm my solution, and explain precisely how "PR" & "PF" contribute. (2018-10-7)
VL: Well, Andrew, your description of the solution is correct.
The mark "PR&PF" (or so) should be removed from this and other problems stipulated BG. It was (and remains) significant only in the general context for the explanation of the genuine nature and place of this hybrid genre in the framework of the family of controversial RA-genres (that is, ones connected with interacting move legalities). In view of this, I recommend to preserve PF as a keyword and even add PRA as such... (2018-10-7)
A.Buchanan: Valery: I have adjusted the stipulations as requested. I have not yet touched the keywords.
If I had a catalogue of pets, and classified a loyal dog called Fido, I would assigned him the keyword "dog". Although there are interesting genetic, evolutionary & cultural relationships between dogs and cats, I would not assign him the keyword "cat", because that would obscure more than it would help, particular to an audience of new and prospective pet owners. The relationship between dogs and cats is much better discussed, once, in the keyword definitions.
I would also make sure that before launching in to such advanced comparative discussions there was a clear, self-contained definition of the concept of "dog". This we still do not have in this database, either for dog or BG. In particular:
- What constrains or motivates the referee/opponent to accept or reject moves?
- Do the regular conventions (accept castling, reject en passant) play any role?
- In an adversarial game (direct or self play), can I reject or accept my opponent's move?
- As the player, do I keep playing moves until I have exhausted all possible partial solutions?
- Is there anything else important to say about BG itself?
Thanks so much! (2018-10-9)
comment
Keywords: Touch Move, En passant, Castling (sg), Post Factum (PF)
Genre: Retro
Reprints: Die Schwalbe 99 06/1986
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-10-9 more...
15 - P0002691
Per Olin
Suomen Tehtäväniekat 15/01/1992
P0002691
(1+1)
Ergänze 4 Bauern zu einem IC!
Wieviele Lösungen?

Typ 1: Dreieck wBa2-a4-c2: 3*12+5=41,
Typ 2: Dreieck wBd2-e2-e3-f2: 10-3=7,
Typ 3: Dreieck wBc4b3c3d3: 2*8=16.
Summe=41+7+16=64!
Per Olin: As published, the Black king was on d5. The problem was
dedicated to the Chess Day of Finnish Chess Federation 15 January 1992.

The solution as given by the composer:

There are three types of solutions.

Type 1) on the six squares triangle a2, a4 and c2 four white pawns can be placed in 15 different ways. Three out of these do not comply with the stipulation, e.g. pawns a2, a3, b2 and c2 is still illegal after removal of c2. Fulfilling the stipulation are 15 - 3 = 12 positions. Mirroring the positions is possible, as well as a similar arrangement of black pawns in NW corner. In the NE corner the white king decreases the amount of solutions to 5. Total of Type 1 is 3 x 12 + 5 = 41.

Type 2) Positions type white pawns d2, e2, e3 and f2 are, including Black's corresponding ones and excluding those included in type 1, altogether 7.

Type 3) A checking white pawn on c4 or e4, whose all starting squares are occupied. The occupying pawns can be 8 combinations of different colors. This gives 2 x 8 positions.

The total of Types 1 - 3 is 41 + 7 + 16 = 64. (2018-8-29)
comment
Keywords: Illegal cluster, only Kings
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-8-29 more...
16 - P0003736
Giuseppe Brogi
1249 Sinfonie Scacchistiche 07-09/1972
P0003736
(12+12) cooked
h#2
b) wSa5
a) 1. f5 Le5 2. 0-0 Th8#
b) 1. Kd8 0-0-0 2. Te8 Lf8#
play all play one stop play next play all
Try to deduce the diagram error, as we do have the intended solutions!
a) wRh7 is original, but cannot have escaped from cage by white cross-capture as there are too many captures needed. On the other hand, Black only has to make 4 captures so the cross-capture is ok.
b) changing the colour of Sa5 shifts the capture balance: now White can cross-capture but not Black, so White but not Black can castle.
Thus the retro-logic works with the diagram as it is, but the forward logic does not. How can we repair the diagram?
A.Buchanan: Something odd going on here. There are numerous h#2 in both a&b. PRA not normally found in a problem with single solution for each twin. White has 8 pawns so trivially wRh7 must be original. (2018-10-13)
A.Buchanan: There are three similar problems by Brogi which are all twinned RS rather than PRA, but don't have diagram error. P0003743, P0003746 & P0003747. (2018-10-13)
comment
Keywords: Castling, Retro Strategy (RS)
Genre: h#, Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-10-13 more...
17 - P0004299
Luis Alberto Garaza
(30) Problem 73-78 06/1961
1.-2. Preis e.a.
P0004299
(12+11)
#3
Längstzüger
31. TT
Henrik Juel: 1.0-0 Ta4 2.Ta1 Ta8 3.Txa8#
C+ by Popeye 4.61
But the real content is probably a proofgame showing how the position could be reached with the maximummer condition in effect throughout (2018-9-23)
Henrik Juel: The magazine issue can be downloaded as
http://problem64.beda.cz/silo/problem_73-78_1961.pdf
On p.39 in solution 30 a proof game in 171.0 moves is given
but I have not checked it (yet) (2018-9-24)
Henrik Juel: The given proof game seems OK, albeit with several typos
The main critical positions are:
after 74.Da1
k6s/1s1ppppp/1p1p2l1/pS1LPt1t/1P3L1P/1PPT4/3P1PP1/D3K2T (15+14)
Here the black knights are controlled as are the other black officers, allowing black pawn captures and the surprising 79... a1=T
after 127.Ld5
1Dsk3s/3ppppp/1p4l1/3LTt1t/1P3ptP/1PP2PS1/3P2P1/4K2T (13+14)
Now the black king can move to g8, after he has been helping out on the board, and we see the need for three black rooks as [Th1] is unavailable
after 151.Dc8
2D1s1k1/3ppppp/1p5s/3LTtt1/1P3PtP/1PP3p1/3P2P1/4K2T (12+13)
Now we can get the black king all the way to h8, and the rest is rather easy... (2018-9-24)
hans: 1. a3 Nc6 2. e3 Ne5 3. Nh3 Ng6 4. Nc3 Nh4 5. Nb5 Ng6 6. Nd6+ cxd6 7. Nf4 Qa5 8. Ne6 Qh5 9. Nc7+ Kd8 10. Na6 Qa5 11. Nb4 Qh5 12. Nc6+ Kc7 13. Qg4 Qa5 14. Qc4 Qh5 15. Ne5+ Kb6 16. Nf3 Qa5 17. Qb3+ Qb4 18. axb4 Ne5 19. Qa3 Nf6
20. Qa6+ Kc7 21. Nh4 Nc6 22. Ng6 Nb8 23. Be2 Ng4 24. Bf3 Ne5 25. Qa5+ b6 26. Qb5 Ba6 27. Bb7 Nc4 28. Nxf8 Ne5 29. h4 Nc4 30. Ng6 Rc8 31. Nf4 Rh8 32. Qf5 Rc8 33. Nd5+ Kd8 34. Nf6 Rc5 35. Qf4 Rh5 36. Qf5 Nc6 37. b3 Nd4 38. Bb2
Ne2 39. Be5 Na5 40. Bf4 Bd3 41. Qe5 Bg6 42. Qf5 Nc4 43. c3 Nd4 44. Ng4 Ne6 45. Ne5 Ng5 46. Nc6+ Kc7 47. Nd4 Rh8 48. Nb5+ Kb8 49. Nc7 Rc8 50. Ne8 Rc5 51. Qe4 Rf5 52. Qb1 Ra5 53. Qc1 Bb1 54. Qc2 Rf5 55. Bd5 Ne5 56. Qb2 Ng6 57. Qc2 Nh8 58. Bc4 Ra5 59. Qb2 Bg6 60. Bd3 Rf5 61. e4 Ra5 62. Nc7 Rf5 63. e5 Ne6 64. Na6+ Ka8 65. Bc4 Nd8 66. Ra5 Ne6 67. Rd5 Nd8 68. Rd3 Ne6 69. Nb8 Nd8 70. Nc6 Ne6 71. Nd4 Nd8 72. Nb5 Nb7 73. Bd5 a5 74. Qa1 dxe5 75. Re3 exf4 76. Re5 a4 77. Qa2 a3 78. Qb1 a2 79. Qd1 a1=R 80. Nc7+ Kb8 81. Nb5 Ra8 82. Nd4 Ra1 83. Nc6+ Kc7 84. Nd4 Ra8 85. Bc4 Ra1 86. Nc2 Ra8 87. Ba6 Rg8 88. Ne3 Ra8 89. Nd5+ Kd6 90. Qe2 Rg8 91. Qc4 Ra8 92. Re4 Rg8 93. Rd4 Ra8 94. Qc7+ Ke6 95. Qc4 Rg8 96. Qd3 Ra8 97. Nf6 Rg8 98. Ne8 Ra5 99. Nf6 Rag5
100. Qg3 Bb1 101. Rd3 Ra8 102. Qh3+ Rg4 103. Nd5 Rg8 104. Rd4 Bg6 105. Nc7+ Kf5 106. Ne8 Nc5 107. Qf3 Na4 108. Nc7 Ra8 109. Bc8 Ra5 110. Nb5 Ra8 111. Qd1 Ra5 112. Qa1 Ra8 113. Qa3 Ra5 114. Ba6 Nc5 115. f3 Ne6 116. Qa4 Ng5 117. Nd6+ Ke6 118. Ne4 Rf5 119. Rd5 Nh3 120. Ng3 Nf2 121. Re5+ Kd6 122. Qa5 Ne4 123. Qd5+ Kc7 124. Qb7+ Kd8 125. Bc4 Nd6 126. Qb8+ Nc8 127. Bd5 fxg3 128. f4 Ke8 129. Qa8 Kf8 130. Qb8 Kg8 131. Qd6 Na7 132. Qxg6 Nb5 133. Qc6 Nd6 134. Qa4 Ne8 135. Bb7 Nf6 136. Ba6 Ng6 137. Rd5 Nf8 138. Rd4 Ra5 139. Rc4 Rhb5 140. Rc5 Nh5 141. Qa3 Ne6 142. Qa4 Nd4 143. Qa3 Nf5 144. Qa4 Nh6 145. Rc4 Rbg5 146. Re4 Raf5 147. Re5 Nf6 148. Bc4 Ne8 149. Bd5 Nf6 150. Qa8+ Ne8 151. Qc8 Kh8 152. Qc6 Nc7 153. Qe6 Nb5 154. Qxf5 Na3 155. Qxg4 Nf5 156. Bb7 Nd6 157. Qe2 Ne4 158. Re6 Ra5 159. b5 Ra8 160. Bc8 Ra4 161. Ba6 Rd4 162. Qc4 Nd6 163. Re2 Ne4 164. Qb4 Nc4 165. Bb7 Ng5 166. Be4 Ne6 167. Bd3 Ng5 168. Qd6 Ne4 169. Qe6 Ng5 170. Qh3 Ne4 171. Qh2 Ne5 position (2018-9-24)
Henrik Juel: Thanks for supplying the intended proof game, Hans
It is remarkable what is possible with the max condition, but with the advent of unique proof games it has no longer much attraction, at least to me (2018-9-24)
comment
Keywords: Maximummer, Castling (wk)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
18 - P0004300
Luis Alberto Garaza
(22) Problem 73-78 06/1961
3. Preis
P0004300
(8+10)
#3
Längstzüger
31. TT
Henrik Juel: 1.0-0 Sc6/Se6/Sf7 2.Tf8+/Txe6/Txf7
C+ by Popeye 4.61
But, like the previous problem, how could the position arise? (2018-9-23)
comment
Keywords: Maximummer, Castling (wk)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
19 - P0004368
Alexander Kislyak
561 Europe Echecs 403 07-08/1992
P0004368
(16+16)
BP in 25,0
1. g4 g5 2. Lg2 Lg7 3. Ld5 Ld4 4. Lc4 Lc5 5. d4 d5 6. Ld2 Ld7 7. La5 La4 8. Dd2 Dd7 9. Db4 Db5 10. Sc3 Sc6 11. 0-0-0 0-0-0 12. Td3 Td6 13. Tf3 Tf6 14. Tf4 Tf5 15. Sf3 Sf6 16. Td1 Td8 17. Td3 Td6 18. Sd1 Sd8 19. Tb3 Tb6 20. Dc3 Dc6 21. Tb4 Tb5 22. b3 b6 23. Kb2 Kb7 24. Ka3 Ka6 25. Sb2 Sb7
play all play one stop play next play all
Sebastian Natschke: Es gibt eine Nebenlösung mit 8. Dd3 Dd6 9. Da3 Da6 und dann 20. Tb4 Tb5 21. Dc3 Dc6 (2018-9-27)
comment
Keywords: Unique Proof Game, Castling, Symmetrical position, Capture-free
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2014-5-22 more...
20 - P0004532
György Paros
Magyar Sakkelet 1954
1. Preis
P0004532
(5+9) C+
h#3
2 Lösungen
1) 1. 0-0-0 0-0 2. Kb7 Tfb1+ 3. Ka6 Txa4#
2) 1. Lxe4 0-0-0 2. 0-0 Tdg1+ 3. Kh7 Txh5#
play all play one stop play next play all
Da Schwarz am Zug ist, muß Weiß im letzten Zug entweder einen der Türme oder den König gezogen haben. Es ist deshalb nur eine der beiden Rochaden legal.
klären: Retrogehalt? darf Weiß rochieren?
klären award: 1. oder 2. Preis?
Sally: Magyar Sakkelett, 1954 2. Preis.
hier sind in der Stellung zwei Probleme versteckt. Durch Retro Analyse kann bewiesen werden, dass die Rochade für W. zulässig ist. Von den beiden Möglichkeiten ist jeweils aber nur eine real. Die beiden Lösungen sind selbstständig. Die Zugabe der s. Rochaden ist ein wertvolles Plus. (2018-11-6)
Henrik Juel: Now we would consider this to display one solution in two parts and omit the stipulated '2 solutions' (2018-11-6)
more ...
comment
Keywords: Partial Retro Analysis (PRA), Castling
Genre: h#, Retro
Reprints: 1313 FIDE Album 1945-1955 1964
(VI) Problem 152-156 04/1973
(17) StrateGems SG19, p. 159, 07/2002
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2017-12-2 more...
21 - P0004893
Waleri A. Liskowez
Bulletin Central Chess Club USSR 1970
3.-4. Preis e.a.
P0004893
(12+13)
#4 BG
Partial solutions in a specific order.

1. e6? 0-0-0! I 1. exd6ep+ a try by the the BG-logic (beruehrt-gefuehrt) with no justification. If rejected, the key must be returned back:
II 1. e6 (1. ... 0-0-0??) by the touched P only! 1. ... Bxb5/gxf6 2. exf7++ (2. ... Kd7 3. Qd7+/bxc6+)
The second key is compatible with the rule of touching chessmen.
The last move? h7xg6 locks wRh8. e6xf5?? illegal (all 3 captures
could not be on light squares). Thus, castling implies ep
play all play one stop play next play all
VL: It seems to be the first BG-problem with
a legal position (cf. P0006091). (2005-7-21)
A.Buchanan: There are broadly two different types of BG problem. The older ones (from 18xx) are retractors, and in some the diagram position is legal (e.g. P1354447 1885). More modern BG compositions have forward stipulations after conventional retro-analysis, and would normally be legal positions. (2018-10-7)
comment
Keywords: Touch Move, Partial Retro Analysis (PRA), Castling
Genre: Retro
Reprints: (1) Die Schwalbe 69 06/1981
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-10-9 more...
22 - P0004967
Lothar Finzer
(X) Die Schwalbe 16 10/1972
P0004967
(14+10)
#2
R: 1. 0-0-0, dann 1. Kd2 (BG) ... 2. Sc1#
play all play one stop play next play all
1. Kb1? ... 2. Lb2# - aber S hat keinen letzten Zug. Wenn W zuletzt gezogen hat, dann stellt nur R: 0-0-0 die schwarze Retrobeweglichkeit wieder her.
ABER: Wegen des sUW-Lf1 war die w0-0-0 illegal. W nimmt die illegale Rochade zurück und macht stattdessen wegen Berührt-Geführt den K-Zug 1. Kd2, gefolgt von 2. Sc1#
more ...
comment
Keywords: Joke, Touch Move, Castling, Illegal position, Retract illegal move, Promoted material on the board (L)
Genre: Retro, 2#
Input: Gerd Wilts, 1995-6-3
Last update: A.Buchanan, 2018-10-7 more...
23 - P0005523
Hansjörg Schiegl
3724 Problemkiste 99 06/1995
P0005523
(2+2) cooked
-1(w+s), dann h#1
Circe
R: 1. Db6xDe3 De6-e3, dann 1. Sc6 Dd8#
play all play one stop play next play all
Cook: NL:
R: 1. Kf5xDf4 Dh2-f4, dann 1. Dc7 De6#
HBae: possible fix: wKf4 nach f2, wDe3 nach e1
R: 1. Da5xDe1 De6-e1, dann 1. Sc6 Dd8# (2018-11-13)
comment
Keywords: Circe, Help retractor, Aristocrat
Genre: Retro
Input: Gerd Wilts, 1995-6-3
Last update: Alfred Pfeiffer, 2018-11-14 more...
24 - P0006091
Jean-Michel Trillon
Themes-64 1969
P0006091
(7+3)
Der letzte Zug muß zurückgenommen werden. Wer gewinnt?
b) wBc5 nach e5
a) R: 1. exd6ep, dann 1. bxa4,+-
b) R: 1. cxd6ep, dann 1. c6 Lxc6#
play all play one stop play next play all
In a) hat der zurückgenommene wBe5 keinen legalen Zug, daher kann Weiß beliebig ziehen und mit bxa4 gewinnen.
In b) kann der zurückgenommene wBc5 ziehen und muß dies auch tun (BG-Regel).
AV: b) Bc5 nach e5 (nicht e4).
Les Blancs ont touché le pion c5 et doivent le jouer ! (2005-6-23)
VL: Both kings in check. It seems to be the first
published BG-problem (cf. P0004893). (2005-7-21)
A.Buchanan: Not clear when the earliest BG problem was published. P1340386 might be the earliest at 1873, but P1354447 could have been earlier, and at the latest 1885. (2018-10-7)
comment
Keywords: Touch Move, Joke, En passant in the retro play, Illegal position, Retract illegal move
Genre: Retro, Studies
Reprints: (4) diagrammes 97 04-06/1991
Chess Life Online 20/05/2011
Input: Gerd Wilts, 1995-7-16
Last update: A.Buchanan, 2018-10-6 more...
25 - P0006474
Mario Velucchi
4103 Problemkiste 105, p. 248, 06/1996
A. Frolkin und A. Kisljak gewidmet
P0006474
(16+16) C+
BP in 11,0
1. d4 e6 2. Dd2 De7 3. Dh6 Da3 4. Lg5 Ld6 5. Sd2 Se7 6. 0-0-0 0-0 7. Kb1 Td8 8. b4 Kf8 9. b5 Ke8 10. b6 g6 11. Dg7 Db2+
play all play one stop play next play all
A.Buchanan: What's this about? (2018-10-13)
comment
Keywords: Unique Proof Game, Castling, Capture-free
Genre: Retro
Input: Gerd Wilts, 1996-6-16
Last update: A.Buchanan, 2014-5-23 more...
26 - P0006550
Juraj Lörinc
F1489R The Problemist 09/1994
P0006550
(16+14) C+
Patrol Chess
a) BP in 13,5 or 14,0?
b) #1 (who)?
a) 1. d3 e5 2. Kd2 Le7 3. Ke3 Lh4 4. Kf4 Sf6 5. Kg5 g6 6. Kh6 0-0 7. Lg5 Te8 8. e3 Te7 9. Df3 Se8 10. Kxh7 d6 11. Kh8 Kh7 12. Dxf7 Lf5 13. f4 Te6 14. De7+ Sg7

8. ... Te7 cannot be escaped, so that no proof game ends with White's 14th

b) White mates with 1. Dxg7# (not 1. ... Dg8)
play all play one stop play next play all
more ...
comment
Keywords: Unique Proof Game, Castling, Patrol Chess
Genre: Retro, Fairies
Computer test: Jacobi
Input: Gerd Wilts, 1996-6-16
Last update: Alfred Pfeiffer, 2018-8-16 more...
27 - P0006741
Peter Kniest
386v Caissas fröhliche Tiefgarage 30/08/1971
P0006741
(4+3) cooked
Schwarz nimmt 1 Zug zurück, dann h#3
2 Lösungen
1) R: Ka2xTb1, dann 1. Ka3 Tc1 2. b1=T Kc2 3. Txb4 Txa1#
2) R: a3xSb2, dann 1. Ka2 Kc2 2. Tb1 Sd1 3. Ta1 Sc3#
play all play one stop play next play all
Cook: R: 1. c3xSb2, dann 1. c2 Ke1,Ke2 2. Kc1 b6 3. Tb1 Sd3#
R: 1. Ka2xDb1, dann 1. Kb3 Dc1 2. Ka3 Kc2 3. b1=S,Ka2 Db2,Dxb2#
Adrian Storisteanu: Is the diagram correct? Solution 1) doesn't work (+1...Sd2+?? is selfcheck), and there seem to be cooks (e.g., - 1.c3xSb2 & 1.c2+ Ke1 2.Kc1 b6 3.Rb1 Sb2-d3#)... (2015-8-5)
Adrian Storisteanu: The intended solutions (from referenced f-6 11/1971, the diagram being correct):
- 1.Ka2xRb1 & 1.Ka3 Rc1 2.b1R Kc2 3.Rxb4 Rxa1#,
- 1.a3xSb2 & 1.Ka2+ Kc2 2.Rb1 Sd1 3.Ra1 Sc3#. (2018-10-25)
comment
Keywords: Help retractor
Genre: Retro
Reprints: (bf) feenschach 6 11/1971
Input: Gerd Wilts, 1996-7-24
Last update: Mario Richter, 2018-10-26 more...
28 - P0008445
Mario Velucchi
3570 diagrammes 118 07/1996
Ph. Schnoebelen gewidmet
P0008445
(5+9)
h#3
1. bxa4 axb3 2. Kxb3 Kd2 3. Kb4 Tb1#
play all play one stop play next play all
A.Buchanan: I like best when all pieces are essential to the chess as well as the letter. Here wfP & beP don't seem to add much. (2018-10-13)
more ...
comment
Keywords: Cant Castler, Castling, Letter problem
Genre: Retro, h#
Input: Gerd Wilts, 1996-10-3
Last update: A.Buchanan, 2018-10-13 more...
29 - P0500984
Herbert Grasemann
Deutsche Schachblätter 1950
Dem deutschen Schachmeister, -schriftsteller und Problemfreund Kurt Richter zum 50. Geburtstag gewidmet
2. Preis
P0500984
(4+8)
#6
1. Dh3+ Ke2 2. Df1+ Kxf1 3. Lh3+ Ke2 4. Lf1+ Kxf1 5. Sf5! Ta2 6. Sg3#
play all play one stop play next play all
ohne den wLf5 ginge sofort 1. Sf5 ... 2. Sg3#
Figuren-Kranz 3×3 d1f3
Erich Bartel: Nachdrucke:
1) Schach-Echo 1955.S.223.---
2) 50 Schach ohne Partner 1977.---
3) 300a Beispiele zur Ideengeschichte des Schachproblems 1982.---
4) feenschach (66) VIII 1983.--
5) 63 logische Phantasien 1986.---
6) 075 Kegelschach 1997.---
7) Die Schwalbe (176) IV 1999,S.64.---
8) Schach VII 1999,S.76.---
9) 1019 Minimalkunst im Schach 2006.---
10) VIII Die Schwalbe (225) VI 2007,S.137.--- (2007-6-18)
Steven Dowd: According to Murkisch, this problem is dedicated "Kurt Richter zum 50. Geburtstag." (2007-6-22)
Sally: 54 Das logische S. Problem.
S. 506 Schwalbe Juni 2008. (2010-4-13)
Sally: S. 26, Nr 23c Schwalben - Treff 90 ( W. E. Kuhn 1990). (2011-12-8)
Sally: Die Aufgabe wurde ferner in "Informal-Ringturnier" der Schwalbe 1950 mit dem 5. Preis ausgezeichnet.
Der Sh4 möchte auf g3 mattsetzen doch wird 1. Sf5?? durch den eigenen Läufer behindert,. Für beliebige Wegzüge des Läufers ist Schwarz zu stark. Dem räumenden Schachgebot :
1. Lh3+?? wiederum steht noch die eigene Dame im Wege. Also hinweg mut ihr, damit der Läufer folgen kann. (2018-9-22)
comment

Genre: n#
Reprints: 206 Volksstimme (Chemnitz) 15/09/1962
Schachsport (LVOOe) 17 03/02/1989
Input: Gerd Wilts, 1996-6-6
Last update: Mario Richter, 2016-9-19 more...
30 - P0502925
György Paros
Magyar Sakkvilag 1945
1.-2. Preis
Ungarische Problemmeisterschaft
P0502925
(4+8) C+
h#3
1. Lg7 h8=S 2. Tf4 Sf7 3. Txf7 Kxb7#
play all play one stop play next play all
Sally: Die ersten beiden w. Züge sind reine Tempozüge; die untätige Figur wird von Schwarz noch geschlagen. die Deckung von f7 ist nur Täuschung. (2018-11-6)
comment
Keywords: Sacrifice of white pieces, under-promotion (S)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 1309 FIDE Album 1945-1955 1964
Input: hpr, 1996-8-29
Last update: Alfred Pfeiffer, 2018-11-6 more...
31 - P0503669
Yuri Bilokin
Alexandr P. Dmitrenko

4824v Mat (Belgrad) 03-04/1986
P0503669
(2+12) cooked
h#6
1. Lc5 La6 2. b5 Lxc8 3. La7 Lxe6 4. Sd7 Lc4 5. 0-0-0 Lxb5 6. Lb8 La6#
play all play one stop play next play all
Cook: NL 1. Kd7 Lxh3 2. Kc6 Kg2 3. Te5 Kf3 4. Tb5 Ke4 5. Ld7 Lg2 6. Lc5 Ke5#
vgl. Castro, P. 1964 (P0503675)
Adrian Storisteanu: Possible fix: +bPf3 (2+13). (2015-8-9)
Yuri Bilokin: https://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1294368%27&s=0 (2018-10-31)
Henrik Juel: Yuri, you do not have to write the long search string
P1294368 suffices (2018-10-31)
more ...
comment
Keywords: Castling, Pure Round Trip (L)
Genre: h#
Input: hpr, 1996-9-23
Last update: Alfred Pfeiffer, 2015-11-4 more...
32 - P0504205
Herbert Angeli
28 harmonie 31 31/12/1990
2. Preis
P0504205
(5+8) C+
h#3
3.1...
1) 1. Tb4 d5+ 2. Ke5 d8=D 3. Te4 Sf3#
2) 1. Ld6 Sf3 2. Lc5 d5+ 3. Kd6 d8=D#
3) 1. Lc6 d8=D 2. Le8 Sf3 3. Lf7 d5#
play all play one stop play next play all
WB- WS- WB= WD
Adrian Storisteanu: The correct setting of P0579084. (2015-11-7)
Sally: 1) 1, Tb4 - d5+ A 2. Ke5 - d8D B 3. Te4 - Sf3 C #.
2) 1. Ld6 - Sf3 B 2. Lc5 - d5+ C 3. Kd6 - d8D A ä.
3) 1. Lc6 - d8D C 2. Le3 - Sf3 A 3. Lf7 - d5. B #.
Weißer Zyklus mit Damen-Umwandlung- (2018-11-7)
comment
Keywords: Cycle
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: Torsten Linss, 1996-10-9
Last update: Alfred Pfeiffer, 2018-11-8 more...
33 - P0504307
Herbert Angeli
13169 Schweizerische Schachzeitung 12/1988
P0504307
(5+5) C+
h#3
3.1...
1) 1. La4 Tb4+ 2. Kc3 Sf4 3. Lc2 Le1#
2) 1. e3 Le1 2. Dc2 Tb4+ 3. Kd3 Sf4#
3) 1. Sf2 Sf4 2. Sd3 Le1 3. Sc5 Tb4#
play all play one stop play next play all
WS- WL- WT
Sally: 1) 1. La4 - Tb4+ A 2. Kc3 - Sf4 B 3. Lc2 - Le1 C #.
2) 1. Sf2 - Sf4, B 2. Sd3 - Le1 C 3. Sc5 - Tb4 A #.
2) 1. Be3 - Le1, C 2. Dc2 - Tb4+A 3. Kd3 - Sf4 B #.
Vollständiger Dreier Zyklus, ökonomische Letzt Form .
Nur der w. König und der wBg5 sind Statisten, werden
aber gebraucht, um Nebenlösungen zu verhindern. Alle
Schlussstellungen enden mit Modellmatt. (2018-11-7)
comment
Keywords: Cycle
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: Torsten Linss, 1996-10-9
Last update: Alfred Pfeiffer, 2018-11-8 more...
34 - P0505031
Norbert Geissler
6102 Thema Danicum 10/1994
P0505031
(4+4) C+
h#6
0.1...
1. ... a4 2. c5 a5 3. c4 a6 4. c3 a7 5. cxb2 a8=D 6. bxc1=S Da1#
play all play one stop play next play all
Erich Bartel: Nachdruck:
1) E3 Problemkiste (107) X 1996.-- (2007-5-29)
Yuri Bilokin: tempo play? Line opening! (2018-10-6)
comment
Keywords: Excelsior (ws), Excelsior, black (auto key), Excelsior, white (auto key), tempo play
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: Markus Manhart, 1996-12-25
Last update: hpr, 2001-9-13 more...
35 - P0506286
Jean-Marc Loustau
Jacques Rotenberg

2595 diagrammes 100 01-03/1992
Preis
P0506286
(4+10) C+
h#3
2.1...
1) 1. Df8 Lg8 2. Df7 Tf4+ 3. Kd5 Lxf7#
2) 1. Dg8 Tf8 2. Df7 Ld5+ 3. Kf5 Txf7#
play all play one stop play next play all
Jacques Rotenberg: .
critical moves
Maslar
Diagonal/orthogonal echo
model mates (2018-3-13)
Jacques Rotenberg: .
withdrawal moves
mates on a same square (2018-10-18)
comment
Keywords: Switchback
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: (P1) Springaren 73, p. 75, 05/1998
E121 FIDE Album 1992-1994 2001
Input: Markus Manhart, 1997-1-6
Last update: Marcin Banaszek, 2018-6-19 more...
36 - P0508298
Veikko August Hynönen
Suomen Tehtäväniekat 1967
P0508298
(6+11) cooked
h#3*
* 1. ... f8=D 2. d1=S Df2 3. Sc3 Sc1#
1. d1=L f8=T 2. Lxe2 Tf5 3. Sd2 Tf3#
play all play one stop play next play all
Cook: NL:
* 1. ... Lf5 2. Sa3 Lc8 3. Sc2 La6# uvm
1. Sa3 Lf5 2. Sc2 Lc8 3. Lg6 La6# uvm
t/Allumwandlung, u/DTsl, u/61112
Adrian Storisteanu: Possible fix: +wPb5 (7+11). (2015-9-22)
Adrian Storisteanu: (The fix is also found in a FIDE Albums errata created by Steen Christensen with Teppo Mänttä.) (2018-10-27)
comment
Keywords: Allumwandlung, Umwandlung im Schlüsselzug
Genre: h#
Reprints: 570 FIDE Album 1965-1967
Input: Erich Bartel, 1997-5-23
Last update: Alfred Pfeiffer, 2018-10-27 more...
37 - P0509100
Arturo Carra
4867 Arbejder-Skak , p. 398, 11/1958
nach T. Kardos
P0509100
(3+10) C+
h#5
1. Kd6 c8=D 2. h1=T+ Dc1 3. Th2 d4 4. Tc2 Dg5 5. Tc6 Dd8#
play all play one stop play next play all
nach L. Talaber
Felber, Volker: Im Original steht 'efter T. Kardos). (2018-9-29)
Gerald Ettl: Laszlo Talaber hat anstelle eines sLa1 einen sT auf a2 stehen. (2018-9-29)
Henrik Juel: The Talaber problem is P0509891 (2018-9-29)
comment
Keywords: Check Protection, Promotion
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: Markus Manhart, 1997-6-27
Last update: Felber, Volker, 2018-9-29 more...
38 - P0509116
Eugene Albert
794 Sahovski Glasnik 05/1963
4. Preis
P0509116
(2+4) C+
h#8
1. Tg1 Lf3 2. T7g3 Lg4 3. Kb4 Kg5 4. Kc3 Kf4 5. Kd2 Lf3 6. Ke1 Ke3 7. Kf1 Kd2 8. T3g2 Le2#
play all play one stop play next play all
more ...
comment
Keywords: Check Protection
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 650 FIDE Album 1962-1964 1968
1174 Ideal-Mate Encyclopedia Vol.1 1999
Input: Markus Manhart, 1997-6-28
Last update: Alfred Pfeiffer, 2018-9-18 more...
39 - P0513103
Stanko Milenkovic
776 Sahovski Glasnik 02-03/1963
1. ehrende Ewähnung
P0513103
(3+3) C+
h#3
b) wLa6 nach a5
c) wLa6 nach a4
a) 1. Ld4+ Kc1 2. Tb3 Sc7+ 3. Kc3 Sd5#
b) 1. Lf4 Sc3 2. Kd4 Kb3 3. Le5 Lb6#
c) 1. Td1 Sd4 2. Kd3 Lb5+ 3. Kd2 Sf3#
play all play one stop play next play all
more ...
comment
Keywords: Aristocrat
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: Markus Manhart, 1997-9-30
Last update: Alfred Pfeiffer, 2018-9-18 more...
40 - P0516356
Max Jacobs
4864 Arbejder-Skak , p. 398, 11/1958
P0516356
(5+2) C+
h#3
b) wLa8 nach h1
a) 1. Kd3 f3 2. Le5 Le4 3. Kd4 Sc2#
b) 1. Ke5 f3 2. Ld4 Sc4 3. Kd5 f4#
play all play one stop play next play all
Verstellung BL
klären: autor welcher Jacobs?
Felber, Volker: Quelle schreibt: 'Max Jacobs, U.S.A. (+)'. Daraus schieße ich 'opus postum' (* 01.04.1904, + 27.02.1958). (2018-9-29)
comment
Keywords: Verstellung
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: Andreas Mokosch, 1997-7-26
Last update: Felber, Volker, 2018-9-29 more...
41 - P0521948
György Paros
Magyar Sakkvilag 11/1948
1. Preis
Kovacs-Gedenkturnier
P0521948
(8+14) C+
h#2
b) +wSa5
a) 1. Ta3 Dxd3 2. Kb3 Db1#
b) 1. Kc5 Da8 2. Kd6 Sb7#
play all play one stop play next play all
Sally: a) Stammt aus der Weihnachtskarte 1948. Diese beiden selbstständigen Probleme hat Paros später immer als Zwillinge behandelt und publiziert. Dieses Problem ragt durch die Schwierigkeit der Lösung über die Schar der landläufigen, Kopf zerbrechend lösbaren Hilfsmattprobleme hinaus. Man hat zunächst den Eindruck, dass in Stellung b) mit einer w. Figur mehr das Mattsetzen leichter wäre. Doch gerade umgekehrt! Paradoxerweise muss sich die stärkere w. Figur mit einem Tempozug verstecken, und außerdem wird sie im Mattzug noch außer Kraft gesetzt.
1. - Da8 ist der einzige Wartezug; alle anderen Damenzüge nehmen S. das Feld "a6" weg, btw. dem Sa5 das Feld "b7! (2018-11-6)
comment
Keywords: Fesselungsspiel (111 101 000), tempo play (D)
Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Reprints: Festgrüße 1948-1949
1279 FIDE Album 1945-1955 1964
1106 Szachy 07/1977
Input: Markus Manhart, 1998-2-10
Last update: Marcin Banaszek, 2018-10-5 more...
42 - P0522040
György Paros
1882 Magyar Sakkelet 05/1955
1. Preis
P0522040
(5+12) C+
h#3
1. g6 Da1 2. Kb6 a5+ 3. Kc7 De5#
play all play one stop play next play all
Sally: Die stärkste Figur führt den auf dem Brett möglichsten längsten Zug aus. 1. - Da1! ist der einzige Wartezug der die kooperative Zugfolge nicht behindert. (2018-11-6)
comment
Keywords: tempo play (D)
Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Reprints: 1314 FIDE Album 1945-1955 1964
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2016-2-15 more...
43 - P0522473
Josef Kupper
12884 Schweizerische Schachzeitung 01/1987
P0522473
(3+4) C+
h#2
2.1...
1) 1. La1 Txe4 2. Lc3 Sc5#
2) 1. Le3+ Kb2 2. Sd2 Sc1#
play all play one stop play next play all
Sally: Zwei ungleiche und ungleich schwierige Lösungen in dieser Miniatur, mit Tempoverschenkung in einem Spiel und zwei Mustermatts. (2018-10-25)
comment
Keywords: tempo play (l)
Genre: h#
Computer test: (Popeye C-Version 3.47 (1024 KB))
Input: Markus Manhart, 1998-2-10
Last update: hpr, 1999-10-29 more...
44 - P0522763
Dmitry Banny
808 Sahovski Glasnik 07/1963
1. Lob
P0522763
(8+9) C+
h#3
1. Tb4 0-0 2. Lb3 cxb3 3. De2 Tf5#
play all play one stop play next play all
more ...
comment
Keywords: Castling (wk), tempo play (d)
Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Input: Markus Manhart, 1998-2-10
Last update: Alfred Pfeiffer, 2018-9-18 more...
45 - P0524424
Jozsef Korponai
1140 Sahovski Glasnik 12/1968
P0524424
(4+3) cooked
h#2*
* 1. ... Sg7 2. Sf4 Db2#
1. Ke6 Sg4 2. Sf7 Dc8#
play all play one stop play next play all
Cook: NL 1. Sxf6 Dxd6+ 2. Ke4 Sg3#
Adrian Storisteanu: Possible fix (all down, wK way up): Kb8 Qb7 Sf4 Sf5 / Ke4 Sd4 Sd5 (4+3) -- *1... Sg6 2.Sf3 Qb1#, 1.Ke5 Sg3 2.Sf6 Qc7#. (2015-9-25)
Harry Fougiaxis: Anticipated by P0536335 (2018-9-16)
comment
Keywords: Echo, Aristocrat
Genre: h#
Input: Markus Manhart, 1998-2-16
Last update: Alfred Pfeiffer, 2015-9-25 more...
46 - P0527622
Markus Ott
Hans Peter Rehm

3453 U.S. Problem Bulletin 104 11-12/1995
P0527622
(2+10) C+
h#6
1. Sa3 Ka2 2. Le4 Kb2 3. d3 Kb3+ 4. Td4 Kc3 5. Td5 Kb2 6. Kd4 Kb3#
play all play one stop play next play all
Sally: Zwei hintereinander geschaltete Rundläufe des weißem Königs
der auf diesem Weg dreimal ein Tempo verliert (und es dadurch gewinnt).
Eine Versio davon erhielt in "idee & form" 1996/97 den ersten Preis. (2018-11-12)
comment
Keywords: Pure Round Trip (KK)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1998-3-9
Last update: Alfred Pfeiffer, 2018-11-13 more...
47 - P0528672
György Paros
3679 Stella Polaris 12/1970
2. Preis
P0528672
(6+5) C+
h#2
2.1...
1) 1. Tc1 Se7+ 2. Txc5 Kf3#
2) 1. Lf8 Sc3+ 2. Lxc5 Kg4#
play all play one stop play next play all
Im FIDE Album steht als Autor "György Bakcsi".
Sally: Dieses Problem stellt die Differenzierung der im s. Spiel
möglichen mehreren Fortsetzungen mit einfachen Mitteln, und leicht verständlich (Dualvermeidung) dar. (2018-11-6)
comment
Keywords: Sacrifice of white pieces
Genre: h#
Computer test: Popeye C-Version 3. 47 (1024 KB)
Reprints: 524 FIDE Album 1968-1970
Input: Hans-Jürgen Schäfer, 1998-3-11
Last update: Alfred Pfeiffer, 2018-11-7 more...
48 - P0528873
György Paros
2154 Magyar Sakkelet 07/1956
1. Preis
BTSB
P0528873
(6+10) C+
h#3
2.1...
1) 1. Ld5 Td1 2. Lf3 Ld2 3. Kxd6 Lf4#
2) 1. Te5 Lh2 2. Te2 Tg3 3. Kxd6 Td3#
play all play one stop play next play all
Sally: Turnier des Landesausschusses für Körperkultur und Sport 1956. 1. Preis.
Der Zusammenhang der beiden Lösungen ist vollkommen:
Zwei w. Figuren sind gefesselt; Schwarz entfesselt in den Lösungen nacheinander beide. Diese bilden eine Batterie; die demaskierende Figur kehrt im Mattzug auf das Ausgangsfeld zurück. (2018-11-6)
comment
Keywords: Fesselungsspiel (224 000 440), Sacrifice of white pieces
Genre: h#
Computer test: Popeye C-Version 3. 47 (1024 KB)
Reprints: 494 FIDE Album 1956-1958 1961
(A1) Springaren 73, p. 70, 05/1998
Input: Hans-Jürgen Schäfer, 1998-3-11
Last update: Alfred Pfeiffer, 2016-2-25 more...
49 - P0529666
Pentti Sola
Essener Anzeiger 1930
2.-3. Preis
P0529666
(2+8) cooked
h#6
1. g1=L+ Kg2 2. f1=L+ Kf3 3. Lc5 Sd2 4. b1=T Ke4 5. Tb6 Sb3 6. Lb5 Sa5#
play all play one stop play next play all
Cook: NL:
1. d5 Kh3 2. Kd6 Kxh4 3. c5 Sc3 4. b1=T Kg5 5. Tb6 Kf6 6. Tc6 Sb5# uvm
RK klären Quelle
Marko Ylijoki: 2.-3. Preis, Essener Anzeiger 1930 (2005-5-15)
Kenneth Solja: bba6 propably missing, because then author's solution works. I haven't seen original diagram. (2010-12-6)
Yuri Bilokin: Correction: bQd7 8/2pq4/2kp4/8/5p2/8/1p3ppK/1N6 (2018-10-31)
Yuri Bilokin: bph4-f4 (2018-10-31)
Henrik Juel: The C+ label should be changed to cooked
Yuri's correction is C+ by Popeye 4.61 (change Pd7 to a black queen and move Ph4 to f4) (2018-10-31)
comment
Keywords: under-promotion (l), Umwandlung im Schlüsselzug
Genre: h#
Input: Ralf Krätschmer, 1997-9-8
Last update: Alfred Pfeiffer, 2018-11-2 more...
50 - P0529768
Josef Kupper
12864 Schweizerische Schachzeitung 11/1986
P0529768
(2+12) C+
h#4
2.1...
1) 1. Le4+ Ld5 2. Lg2 Ka8 3. Se4 Lxg8 4. g3 Le6#
2) 1. Se4 Lb3 2. g3 Lxc2 3. Da2 Lb3 4. Dg2 Le6#
play all play one stop play next play all
Sally: Zweimal erreicht der w. Läufer das gleiche Mattfeld unter prächtigem Kampf, aber auf ganz verschiedener Art. Die beiden schwarzen Themasteine D und Lc2, blockieren reziprok das Feld "g2" und werden vom Läufer geschlagen. (2018-10-25)
comment

Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: Ralf Krätschmer, 1998-1-7
Last update: hpr, 1999-2-12 more...
51 - P0532497
Karl-Heinz Ahlheim
1759 Schachmaty 10/1963
P0532497
(5+8) cooked
h#2
b) wTb8
a) 1. Kc8 Sc6 2. Tc7 Sxd6#
b) 1. Kc6 Sd8+ 2. Kd5 Tb5#
play all play one stop play next play all
Cook: NL:
a) 1. Lc6 Ka7 2. Tc8 Sa6#
a) 1. Kc8 Sc6 2. Tc7 Sa7#
Adrian Storisteanu: Fix: +wPa7 (6+8). 561 in FIDE Album 1962-1964 indeed has a wPa7 (but lacks bPh7, which leads to other cooks). (2018-10-27)
comment
Keywords: Fesselungsspiel (224 000 440)
Genre: h#
Reprints: 561 FIDE Album 1962-1964
(54) diagrammes 21, p. 15, 04-06/1997
Input: Markus Manhart, 1998-3-28
Last update: Marcin Banaszek, 2016-1-31 more...
52 - P0532636
Alexander Toger
827 Sahovski Glasnik 12/1963
2. ehrende Erwähnung
P0532636
(6+6) C+
h#2
b) sKh6 nach h7
a) 1. Kh7 Kf4 2. Tg8 Sg5#
b) 1. Kh6 Sf6 2. Tg5 Sg8#
play all play one stop play next play all
more ...
comment
Keywords: Fesselungsspiel (224 202 202)
Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Input: Markus Manhart, 1998-3-28
Last update: Alfred Pfeiffer, 2018-9-18 more...
53 - P0534966
György Paros
Tipografia Turnier 1963
Magyar Sakkelet 01/1963
2. Preis
P0534966
(6+6) C+
h#2*
* 1. ... Tb8 2. Sd4 Se5#
1. Sd2 Txa7 2. Sc4 Sd4#
play all play one stop play next play all
Sally: Die luftige Stellung deutet gar nicht auf ein Zugwechselproblem hin. Das Satzspiel scheitert als Lösung mangels Wartezug. Die Lösung wiederholt den Mechanismus des Satzspiels. (2018-11-6)
comment
Keywords: Fesselungsspiel (222 000 220)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Reprints: 538 FIDE Album 1962-1964
Input: Michal Dragoun, 1998-4-6
Last update: Alfred Pfeiffer, 2018-11-7 more...
54 - P0536301
Uri Avner
FIDE Tagung 1997
2. Preis
P0536301
(6+8) C+
h#2
2.1...
1) 1. Kxd8 Lxg5 2. Sxg5 Td2#
2) 1. Kd6 Txh6 2. Sxh6 Lb4#
play all play one stop play next play all
Author: Themes: "Enabling black moves"; "Sacrifice of white pieces"; Exchange of function wT/wL". (2004-1-10)
HBae: Der Name für den Account “Author” (=Uri Avner?) ist sehr unglücklich gewählt, weil man dahinter den jeweiligen Problem-Autor vermuten könnte. Siehe z.Bsp. P0544790 (Bakcsi), P0579232 (Haymann), P0527922 (Csak), P0529075 (Ersek), P0566072 (Zoltan), P0005061 (Olin, hidden). (2018-10-7)
comment

Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: Michal Dragoun, 1998-4-6
Last update: hpr, 1999-11-8 more...
55 - P0536685
György Paros
I Die Schwalbe , p. 281, 11-12/1948
P0536685
(8+8) C+
h#2
3.1...
* 1. ... g5 2. fxg5 Se5#
* 1. ... exd4 2. cxd4 Tb4#
* 1. ... a5 2. bxa5 Txc5#
1) 1. Sa6 g5 2. fxg5 Se5#
2) 1. Sc6 a5 2. bxa5 Txc5#
3) 1. Sd7 exd4 2. cxd4 Tb4#
play all play one stop play next play all
Sally: Das erste Hilfsmatt vom Fleck-Typ. In der Stellung scheinen drei Lösungen möglich zu sein; zwei sind immer durch den ersten s. Zug ausgeschaltet. (2018-11-6)
comment
Keywords: Polar-Echo
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: Michal Dragoun, 1998-4-6
Last update: Alfred Pfeiffer, 2018-11-7 more...
56 - P0544628
György Paros
Magyar Sakkelet 03/1976
1. Preis
Thematurnier Budapester Schachbund 1975
P0544628
(9+9) C+
h#2
b) wLb1 nach h7
a) 1. Sf6 Tc3 2. Lf5 Sb5#
b) 1. Sb2 g7 2. Lb5 Sf5#
play all play one stop play next play all
Sally: Nachträglich 1. Preis!! Das ausgeschriebene Thema war: Zwei s. Linienfiguren decken sich untereinander. Im Lösungsverlauf sperrt Schwarz eine Linie, Weiß die andere. Im Mattzug nutzt Weiß diese Liniensperrungen aus. Im Turnier wurde eigentlich ein anderes Paros-Problem an die Spitze gesetzt. einige Jahre später dazu ein totaler Vorgänger entdeckt. Dadurch wurde das folgende Werk, das übrigens Paros selbst als besseres eingeschätzt hatte, nachträglich vom 2. auf den 1. Platz gesetzt. (2018-11-6)
comment
Keywords: Fesselungsspiel (212 202 000)
Genre: h#
Computer test: Popeye C-Version 3.47 (1024 KB)
Input: Markus Manhart, 1998-4-17
Last update: Alfred Pfeiffer, 2018-11-7 more...
57 - P0548616
Josef Kupper
757 idee & form 51 07/1996
P0548616
(2+3) C+
h#3
2.1...
1) 1. Kh5 Kh8 2. Dh4 Kh7 3. g5 Sf6#
2) 1. Dh5 Se5+ 2. Kh6 Kh8 3. g6 Sf7#
play all play one stop play next play all

Duplicate Diagram: P0518987

steingetreuer Vorgänger: P0518987
Sally: Eigentlich ideal:
Chamäleonechomatts, Ausgangsstellung nach Mass und eindeutiger Zugfolge. (2018-10-26)
comment
Keywords: Oneliner, Symmetrical position, Asymmetrical solution, Ideal mate, Echo, Chameleonecho, anticipated (P0518987)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: Thomas Maeder, 1998-5-27
Last update: Alfred Pfeiffer, 2018-10-26 more...
58 - P0550147
Josef Kupper
13132 Schweizerische Schachzeitung 09/1988
P0550147
(3+4) C+
h#3
4.1...
1) 1. Td3 Lg4 2. Ke3 Ke5 3. h5 Te2#
2) 1. Te4 Lh5 2. Ke3 Txc3+ 3. Kf4 Tf3#
3) 1. Kd3 Ld1 2. Ke4 Tg2 3. Kf4 Tg4#
4) 1. h5 Kg5 2. Te6 Td2+ 3. Ke5 Td5#
play all play one stop play next play all
Sally: Miniatur mit viermaliger Abwandlung von Turmblocks. Alle Lösungen enden zwar mattrein, sin aber alles andere als offensichtlich. (2018-10-25)
comment
Keywords: Echo-Kombinationen
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: Ronald Schäfer, 1998-1-3
Last update: hpr, 1999-1-9 more...
59 - P0556089
Ljubomir Anastasov
3. Jugoslawische Meisterschaft 1972
Mat (Belgrad) 06/1974
1.-2. Preis
P0556089
(7+7) cooked
h#3
b) sSf4 nach e2
a) 1. Dd7 Td6 2. Sf3 Te6 3. Dd2 Ld4#
b) 1. Dc7 Ld6 2. Se4 Lxc5 3. Df4 Td3#
play all play one stop play next play all
Cook: NL:
a) 1. Se4 Td1 2. Dd2,Dd3 Tf1 3. De2 Lxf4#
Adrian Storisteanu: Fix: bPg5 (instead of the wP) (6+8). Possibly a misprint in the source used (e.g., the FIDE Album)?! (2018-10-27)
comment

Genre: h#
Reprints: 605 FIDE Album 1971-1973 1978
(B4) Springaren 73, p. 70, 05/1998
Input: Markus Manhart, 1998-8-13
Last update: Alfred Pfeiffer, 2018-10-29 more...
60 - P0559795
Albert Hernitz
785 Sahovski Glasnik 04/1963
2. Lob
P0559795
(4+4) C+
h#3
1. Kc6 Lb8 2. Sc5 Sd6 3. Ld5 Se5#
play all play one stop play next play all
more ...
comment
Keywords: Aristocrat
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1999-2-17
Last update: Alfred Pfeiffer, 2018-9-18 more...
61 - P0570627
György Paros
Magyar Sakkelet 05/1955
1. Preis
BTSB
P0570627
(3+6) C+
h#6
0.1...
1. ... c8=D 2. Lc6 f4 3. Kb6 f5 4. Kc5 f6 5. Kd6 f7 6. Ke7 f8=D#
play all play one stop play next play all
Sally: Turnier des Budapester Ausschusses für Körperkultur und Sport 1955, 1. Preis (Weiß zieht an).
Einer der w. Bauern wird Dame im ersten, der andere im letzen Zug. (2018-11-7)
comment
Keywords: Excelsior, white (auto key), Umwandlung im Schlüsselzug, Umwandlung im Mattzug
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: hpr, 1999-4-7
Last update: Alfred Pfeiffer, 2018-11-7 more...
62 - P0572409
György Paros
9301 Schweizerische Schachzeitung 11/1962
Hans Ott gewidmet
P0572409
(6+5) C+
h#2*
* 1. ... d8=S 2. Sc4 Sf6#
1. Ke6 f8=S+ 2. Kf7 Sh6#
play all play one stop play next play all
Nr. 249
more ...
comment
Keywords: under-promotion (S)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: Markus Manhart, 1999-3-27
Last update: Alfred Pfeiffer, 2018-11-7 more...
63 - P0574674
Laszlo Lindner
Z20v 0-0 8, p. 19, 08/1981
P0574674
(11+10) C+
ser-h#8
b) gespiegelt an d/e-Achse
a) 1. Kxd7 2. Kc6 3. Kxb5 4. Ka4 5. Kxa3 6. Ka2 7. Ka1 8. T8a2 0-0#
b) 1. Th2 2. T2xh3 3. T3h7 4. Txe7 5. Te6 6. 0-0 7. Tf7 8. Tg7 Ta8#
play all play one stop play next play all
Der im Druck vergessene wSb5 ist hier ergänzt.
paul: Popeye+ for a) but without solution in b). A wPb6 is missing, I guess. (2018-10-31)
Alfred Pfeiffer: Das Diagramm Z20 in "0-0" 8 ist anders als hier:
-wBb4, wBd2 nach e2, -wBg2, +wSb5, sBd3f4 nach f5g4 (9+10).
Spätere Korrektur und/oder Lösung nicht gefunden. (2018-11-2)
Mario Richter: Die hier vorliegende Korrektur stammt aus 'Mattbilder eines Lebens', Problem 606, S. 441. (Die Originalstellung, wie von Alfred angegeben, findet sich dort als Problem 606A).
In der Lösung zu a) heißt es dort "3. Kxb5", was die Vermutung nährt, daß im Diagramm ein wSb5 vergessen wurde. (mit +wSb5 sind sowohl a) als auch b) C+.) (2018-11-3)
comment
Keywords: Series mover, Castling, Twin by board reflection
Genre: Fairies
Computer test: Popeye
Reprints: 606 Mattbilder eines Lebens , p. 441, 1996
Input: Felber, Volker, 1999-12-22
Last update: Alfred Pfeiffer, 2018-11-5 more...
64 - P0575923
Vyacheslav Kopaev
193 harmonie 44, p. 141, 31/12/1994
P0575923
(5+10) C+
h#2
b) sKa5 nach d4
c) sKa5 nach f4, sBf2 nach f3
d) sKa5 nach h4
e) sKa5 nach e2
f) sKa5 nach d8
g) sKa5 nach e8
h) sKa5 nach f8
i) sKa5 nach g7
j) ferner -sTh8
a) 1. Lc6 Db7 2. La4 b4#
b) 1. Ld5 Dc6 2. e4 Dc3#
c) 1. Le4 Dd5 2. Sg3 Dxd2#
d) 1. Lf3 De4 2. Lxg4 Dxg4#
e) 1. Lg2 Df3+ 2. Kf1 Dd1#
f) 1. Tc8 Db8 2. Te8 Dd6#
g) 1. Td8 Dc8 2. Tf8 Dxe6#
h) 1. Te8 Dd8 2. Tg8 Df6#
i) 1. Tf8 De8 2. Kg8 Dg6#
j) 1. Tg8 Df8+ 2. Kh8 Dh6#
play all play one stop play next play all
Felber, Volker: vergleiche P0539453, P0540446, P1290766 (2018-10-18)
comment

Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
Input: Felber, Volker, 1999-12-29
Last update: Felber, Volker, 2018-10-18 more...
65 - P0575962
Mario Velucchi
309 harmonie 49 03/1997
P0575962
(3+3) C+
h#3v
1. Sc6? 0-0-0?? 2. Sb4 Td5 3. Sd4 Tc5#
1. Kb4! Tb1+ 2. Ka4 c3 3. Sa3 Tb4#
play all play one stop play next play all
Kein letzter Rochade erhaltender Zug von Weiß.
A.Buchanan: This is wonderfully economical, with all 6 pieces involved in the two different mates which are completely separate. (2018-10-13)
comment
Keywords: Cant Castler, Homebase (w), Castling
Genre: h#, Retro
Computer test: Popeye C-Version 3.52 (2048 KB)
Input: Felber, Volker, 1999-12-29
Last update: A.Buchanan, 2018-10-13 more...
66 - P0578326
Krasimir Gandev
Schach-Echo 1976
2. Preis
P0578326
(4+11) cooked
h#3
2.1...
1) 1. Th7 Ld4+ 2. De5 Lc3 3. Tg7 Tf2#
2) 1. Tf8 Tf2+ 2. Df5 Tf1 3. Tf7 Ld4#
play all play one stop play next play all
Cook: NL:
1. Th7 Lh2 2. Df7 Lc7 3. Tg7 Tf2#
Adrian Storisteanu: Possible fix (also seen in a FIDE Albums errata created by Steen Christensen with Teppo Mänttä): +bPd6 (4+12). (2018-10-27)
comment

Genre: h#
Reprints: 616 FIDE Album 1974-1976
(D1) Springaren 73, p. 71, 05/1998
Input: hpr, 2000-12-6
Last update: Marcin Banaszek, 2016-1-16 more...
67 - P0578397
Mario Velucchi
14156 Schach , p. 101, 11/1998
P0578397
(5+6) C+
h#3v
1. Kd3 Sf3 2. Kc2 Ke2 3. b2 Sd4#
and not
1. Ke3 Sf3 2. d4 0-0? 3. d3 Te1#
play all play one stop play next play all
White can't castle.
A.Buchanan: Two imaginative and very different checkmates. The only tiny gripe is that W1 is the same in both phases. (2018-10-13)
comment
Keywords: Homebase (w), Castling, Cant Castler
Genre: h#, Retro
Computer test: Popeye WIN32-Version 3.64 (2048 KB)
Input: hpr, 2000-12-26
Last update: A.Buchanan, 2018-10-13 more...
68 - P0578398
Josef Kupper
14157 Schach , p. 101, 11/1998
P0578398
(3+7) C+
h#6
b) wLh1->e4 (-sBe4), sBa6->a3
a) 1. Kxe2 Lg2 2. e3 Le4 3. d5 Lxc2 4. d4 Lf5 5. Le4 Lc8 6. Kd3 Lxa6#
b) 1. a2 Lxc2 2. a1=L La4 3. Lf5 Lxd7 4. Ke4 e3 5. c2 Kd2 6. Le5 Lc6#
play all play one stop play next play all
Sally: Hier fragt man sich, wie das Mattbild zustande kommt?
Die Lösungen bestehen aus zwei fein pointierten Zugfolgen,
die zu Idealmatts führen. (2018-10-26)
comment
Keywords: Ideal mate
Genre: h#
Computer test: Popeye WIN32-Version 3.64 (2048 KB)
Input: hpr, 2000-12-26
Last update: Alfred Pfeiffer, 2018-10-26 more...
69 - P1000021
Michel Caillaud
3251 Phénix 80 12/1999
Pascal Wassong gewidmet
P1000021
(11+10) C+
BP in 23,5
1. Sf3 g6 2. Se5 Lg7 3. Sxd7 Lc3 4. dxc3 h6 5. Lxh6 a6 6. Lf8 Txh2 7. Kd2 Th5 8. Ke3 Te5+ 9. Kf4 Txe2 10. Kg5 Txf2 11. Lxa6 Sf6 12. Lxb7 Txa2 13. Th8 Txb2 14. Ta8 Sa6 15. Sb8 Lh3 16. Sd2 Sg4 17. Se4 f5 18. Sf6+ Kf7 19. Sg8 Ke6 20. Kxg6 Ke5 21. Kf7 Dd5+ 22. Ke8 Da2 23. Dd8 Td2 24. Lc8
play all play one stop play next play all
Joost de Heer: Solution:
1. Nf3 g6 2. Ne5 Bg7 3. Nxd7 Bc3 4. dxc3 h6 5. Bxh6 a6 6. Bf8 Rxh2 7. Kd2
Rh5 8. Ke3 Re5+ 9. Kf4 Rxe2 10. Kg5 Rxf2 11. Bxa6 Nf6 12. Bxb7 Rxa2 13. Rh8
Rxb2 14. Ra8 Na6 15. Nb8 Bh3 16. Nd2 Ng4 17. Ne4 f5 18. Nf6+ Kf7 19. Ng8
Ke6 20. Kxg6 Ke5 21. Kf7 Qd5+ 22. Ke8 Qa2 23. Qd8 Rd2 24. Bc8
* (2002-4-21)
paul: Belfort theme. (2018-9-19)
Henrik Juel: I was a little suspicious about the C+ label, as no further details were furnished
But the proof game is indeed C+ by Euclide 1.01, and surprisingly the testing took only 2 minutes, with the solution being found in half a minute (2018-9-19)
comment
Keywords: Unique Proof Game, Ornament
Genre: Retro
Input: Gerd Wilts, 2000-7-31
Last update: Gerd Wilts, 2004-7-5 more...
70 - P1000037
Mario Velucchi
7380 Thema Danicum 90 04/1998
P1000037
(7+4) C+
h#3
1. Sb1 0-0 2. Sc3 Tfb1 3. Sxa2 Txa2#
1. Sc4 0-0-0 2. Ka3 Kc2 3. Kxa2 Ta1#
play all play one stop play next play all
Henrik Juel: 1.Sb1 00 2.Sc3 fRb1 3.Sxa2 Rxa2# or 1.Sc4 000 2.Ka3 Kc2 3.Kxa2 Ra1#. White cannot castle both ways, so there is only one solution. (2003-10-14)
A.Buchanan: Good tutorial example of PRA, showing one solution with 2 parts. (2018-10-13)
Henrik Juel: I agree, Andrew
You might want to refer to this problem in the Keyword definition
'Retro variants (RV,pRA)' is not a good-looking Keyword
RV is rather silly, PRA is much better, although Partial could be misunderstood to stand for something other than In Parts (2018-10-13)
A.Buchanan: OK Henrik, I have put in a brief definition in English. There's a lot more that could be written here. (2018-10-13)
Henrik Juel: Excellent rewriting, Andrew
Two typos: a ) is missing, and problems should be problem
It is interesting and irritating that each new generation must rediscover this area and introduce new names for old things
It is even worse when Codex stuff is reversed... (2018-10-13)
A.Buchanan: Thanks - fixed the typos. Also written a few lines about RS (Retro Strategy). (2018-10-13)
more ...
comment
Keywords: Castling, Homebase (w), Partial Retro Analysis (PRA)
Genre: Retro, h#
Reprints: (20) StrateGems SG19, p. 159, 07/2002
Input: Gerd Wilts, 2000-7-31
Last update: A.Buchanan, 2018-10-13 more...
71 - P1000210
Thierry Le Gleuher
10348 Die Schwalbe 176 04/1999
Gerd Wilts gewidmet
P1000210
(7+3) C+
BP in 13,5
1. h4 g5 2. hxg5 Sf6 3. gxf6 d6 4. fxe7 Le6 5. exf8=L Lxa2 6. Lxd6 Lxb1 7. Lxc7 Lxc2 8. Lxb8 Lxd1 9. Lxa7 Txa7 10. Txa7 Lxe2 11. Txb7 Lxf1 12. Txf7 Lxg2 13. Tfxh7 Lxh1 14. Txh1
play all play one stop play next play all
Damals längste BP mit allen verbleibenden Steinen (scheinbar) auf ihren Ausgangsfeldern.
more ...
comment
Keywords: Unique Proof Game, Homebase (2), Impostor (T), Ceriani-Frolkin Theme (L), Prentos Theme (L), Excelsior (w), under-promotion (L), Massacre PG
Genre: Retro
Computer test: Popeye
Input: Gerd Wilts, 2000-8-1
Last update: A.Buchanan, 2018-10-1 more...
72 - P1000947
Thierry Le Gleuher
Messigny 1998
3. Preis
P1000947
(13+15) C+
BP in 17,5
1. Sc3 Sf6 2. Sd5 Se4 3. Sf6+ gxf6 4. d4 Lg7 5. d5 0-0 6. Dd4 Lh8 7. Db6 axb6 8. Lg5 Ta3 9. 0-0-0 Te3 10. a4 Kg7 11. a5 Kg6 12. a6 Kf5 13. a7 Ke5 14. a8=D Kd6 15. Da4 Sa6 16. Dc6+ dxc6 17. Lf4+ e5 18. dxe6ep++
play all play one stop play next play all
paul: Valladao task. (2018-10-16)
Henrik Juel: Testing with Natch 3.1 took 1:23 minutes on my computer
Testing with Euclide 1.01 would take more than 10 minutes, but testing the first 16.5 moves (which is sufficient) took just 4 seconds (2018-10-16)
Olaf Jenkner: So there is a way to improve Euclide. (2018-10-16)
comment
Keywords: Ceriani-Frolkin Theme (D), Unique Proof Game, En passant, Castling, Valladao Task
Genre: Retro
Computer test: Resolution time : 4 mn 29.34 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
Reprints: M3 Phénix 66 09/1998
Input: Gerd Wilts, 2000-10-15
Last update: A.Buchanan, 2018-10-17 more...
73 - P1001091
Etienne Dupuis
P0074 StrateGems 12 10-12/2000
5. Lob
P1001091
(16+15) C+
BP in 10.5
Vertikaler Zylinder
Nullzüge erlaubt
1. a4 d6 2. Ta3 La2 3. Ta3 e6 4. h3 Le7 5. Sh2 Lf6 6. Sb3 Lc3 7. dxc3 h5 8. Kd2 h4 9. Kd3 Th5 10. Lh6 Th5 11. Sc1
play all play one stop play next play all
Zweimal Tempoverlust durch einen Nullzug.
Henrik Juel: Nice demonstration of cylinder-specific moves (Lc8-a2 and Sb1-h2-b3) and null-moves (3.Ta3-a3 and 10... Th5-h5 around the cylinder) (2018-11-3)
more ...
comment
Keywords: Unique Proof Game, Loss of tempo (T1t1), Cylinder (Vertikaler)
Genre: Retro, Fairies
Computer test: Jacobi+
Input: Gerd Wilts, 2001-2-11
Last update: Alfred Pfeiffer, 2018-11-5 more...
74 - P1001092
Etienne Dupuis
P0075 StrateGems 12 10-12/2000
P1001092
(14+14)
BP in 15,5
Vertikaler Zylinder
Nullzüge erlaubt
1. Sh3 c5 2. Sb4 cxb4 3. Sa3 bxa3 4. hxa3 Da5 5. Th4 b6 6. f4 Lf3 7. f5 h5 8. Th4 Sh7 9. Th4 0-0-0 10. Th4 Kb7 11. Th4 Thc8 12. Th4 Tc3 13. dxc3 a6 14. Dd3 Sa7 15. Ld2 Sg6 16. 0-0-0
play all play one stop play next play all
5 Wartezüge (Nullzüge) des wTh4
Cook: Dual
7. f5 a6 8. Th4 h5 9. Th4 Sh7 10. Th4 Tc8 11. Th4 Tc3 12. dxc3 O-O-O-O! 13. Le3 Kb7 14. Dd3 Sa7 15. O-O-O Sg6 16. Ld2 (Paul)
paul: Cook: 7.f5 a6 8.Rh4 h5 9.Rh4 Sh7 10.Rh4 Rc8 11.Rh4 Rc3 12.dxc3 O-O-O-O! 13.Be3 Kb7 14.Qd3 Sa7 15.O-O-O Sg6 16.Bd2 (Jacobi). A special castling by Black at move 12. (2018-11-3)
Henrik Juel: The loong castling in Paul's cook is new to me
But it does satisfy the formal castling requirements (2018-11-3)
comment
Keywords: Unique Proof Game, Cylinder (Vertikaler), Castling
Genre: Retro, Fairies
Input: Gerd Wilts, 2001-2-11
Last update: Alfred Pfeiffer, 2018-11-5 more...
75 - P1001146
Satoshi Hashimoto
(13) Probleemblad 03/1999
P1001146
(14+16) C+
BP in 6,5
1. e3 Sf6 2. e4 Sxe4 3. Sa3 Sc3 4. Tb1 Sxb1 5. Sb5 Sa3 6. Sc3 Sc4 7. Sb1
play all play one stop play next play all
Mario Richter: brauchen wir wirklich zwei verschiedene Keywords - hier "Tempoverlustmanöver", bei z.B. P1007491 hingegen "Loss of tempo"? (2018-10-21)
Henrik Juel: Good point, Mario
Other things in the never-ending Keyword discussion include:
Tempoverlustmanöver is currently called the same in english and french, and has no definitions
Loss of tempo (Tempoverlust in german) is defined as
'With White to play, a sequence of moves to reach the same position with Black to play. (Help game, abbr .: TV)'
which makes little sense in proof games
In this problem [Pe2] goes e2-e3-e4 ('wasting' a move)
In P1007491 [Pc2] similarly goes c2-c3-c4-... and [Lc8] goes (among other things) c8-b7-a6-c8 ('triangulation') (2018-10-21)
comment
Keywords: Unique Proof Game, Pure Round Trip (S), Homebase (w), Tempoverlustmanöver (weP)
Genre: Retro
Computer test: (Natch 1.3 Copyright (C) 1997-1999 Pascal Wassong)
Reprints: (2) Schweizerische Schachzeitung 05/2005
Input: Gerd Wilts, 2001-2-11
Last update: A.Buchanan, 2017-4-21 more...
76 - P1001645
Christopher John Feather
(21) Hatchings 3 07/1995
P1001645
(5+14) C+
h#3
b) wSf8
a) 1. Dd5 Le4 2. fxe4 Tg6 3. f5 Lxg7#
b) 1. Dg6 Tg5 2. fxg5 Ld5 3. Kf6 Sxd7#
play all play one stop play next play all
more ...
comment

Genre: h#
Computer test: (Popeye WINDOWS-32Bit-Version 3.70 (2048 KB))
Input: hpr, 2001-10-28
Last update: A.Buchanan, 2018-10-9 more...
77 - P1002518
Josef Kupper
14340 Schach 09/1999
P1002518
(6+10) C+
h#4
2.1...
1) 1. La8 Lb7 2. Tg2 Lc8 3. Db3 Se2 4. Ld5 Lxa6#
2) 1. Lc2 Lc6 2. La4 Lxd7 3. Dd3 Se2 4. Lb5 Lxe6#
play all play one stop play next play all
Sally: Die Aufgabe hat zwar zwei attraktive Lösungen, aber "von der Bahnung, dem Schachschutz und dem Damen/Läuferblock in der ersten Lösung blieben leider in der zweiten nur die beiden Blocks übrig. (2018-10-26)
comment

Genre: h#
Computer test: Popeye WINDOWS-32Bit-Version 3.73 (2048 KB)
Input: hpr, 2002-2-16
Last update: Alfred Pfeiffer, 2018-10-26 more...
78 - P1004039
Michel Caillaud
3653 Phénix 95 04/2001
P1004039
(15+12)
BP in 18,0
Multicapture Chess
1. Sf3 d5 2. Se5 Dd6 3. Sg4 Da3 4. bxa3 a5 5. Sc3 Ta6 6. Se4 Tf6 7. Sexf6 Sh6 8. e4 Sf5 9. Sh6 Tg8 10. Shxg8 Le6 11. Sd7 Sh6 12. Sc5 Sd7 13. Lb5 Sf6 14. d3 Shxg8 15. Kd2 Sd7 16. Lxd7 Sf6 17. Lc8 Sd7 18. Sb3 Sb8
play all play one stop play next play all
paul: The last 9 moves checked by Jacobi. (2018-9-19)
Henrik Juel: In Multicapture Chess a capture is possible only if the man to be captured is threatened by (at least) two enemy men; as a check is a threat to capture a king, checks are redefined similarly
Here we need white knights on both f6 and h6 to capture [Th8] on g8, Sf6 not checking; and Lb5xSd7-c8 is possible without the black king moving away (2018-9-19)
Mario Richter: Using Henrik's observation regarding the capture of black rook h8, we can completely determine the nature of all white moves:
to get wSb1+g1 to f6 and g6 requires 7 moves, capturing sTg8 another move, and to get one wS to b3 3 more moves - this determines already 11 moves.
The remaing 7 moves are necessary for:
- 1 b2xa3
- 1 d2-d3
- 1 e2-e4
- 1 Ke1-d2
- 3 Lf1-*-*-c8
Since the wS who captured the black rook on g8 didn't leave this square, similiar thoughts might be executed with respect to the Story of the black Knights ... (2018-9-21)
more ...
comment
Keywords: Unique Proof Game, Multicapture Chess
Genre: Retro, Fairies
Input: Gerd Wilts, 2002-4-5
Last update: A.Buchanan, 2014-5-20 more...
79 - P1004767
Josef Kupper
14707 Schach 03/2001
P1004767
(4+6) C+
h#3
2.1...
1) 1. Te2 Sc6 2. Kf3 Lc1 3. Dg3 Se5#
2) 1. Sd3 Lc5 2. Db7 Sg6+ 3. Ke4 Lxb7#
play all play one stop play next play all
Sally: Dieses Problem hat in beiden Hauptvarianten gewisse Ähnlichkeiten, aber bewusst keine völlige Analogie.
Zwei verschiedene Lösungen mit gut versteckten Mattfeldern. (2018-10-26)
comment

Genre: h#
Computer test: Popeye WINDOWS-32Bit-Version 3.73 (2048 KB)
Input: hpr, 2002-5-13
Last update: Alfred Pfeiffer, 2018-10-26 more...
80 - P1013058
Gerd Wilts
Retros mailing list 25/01/2004
P1013058
(1+1) C+
BP in 16,5
Einsteinschach
1. d4 c5 2. Lg5[=wS] cxd4[=sS] 3. Sxh7[=wL] Sxe2[=sL] 4. Lxg8[=wT] Txh2[=sD] 5. Txg7[=wD] Lxg7[=sT] 6. Txh2[=wD] Txg2[=sD] 7. Dxb8 Dxg1 8. Dxa7 Dxf2+ 9. Dxf2 Txa2[=sD] 10. Dxf7+ Kxf7 11. Dxd7 Dxb2 12. Dxc8 Dxb1+ 13. Txb1[=wD] Dxc8 14. Dxb7 Dxc2 15. Dxe7+ Kxe7 16. Lxe2[=wT]+ Dxe2+ 17. Kxe2
play all play one stop play next play all

Duplicate Diagram: P0001931, P1000051, P1184221

paul: Checked also by Jacobi in few minutes. (2018-10-28)
more ...
comment
Keywords: Unique Proof Game, Einstein, Massacre PG, only Kings
Genre: Retro, Fairies
Computer test: Popeye 4.51
Reprints: L3 StrateGems 04-06/2012
Input: Gerd Wilts, 2004-1-26
Last update: A.Buchanan, 2014-5-20 more...
81 - P1013122
Michel Caillaud
4136 Phénix 113 12/2002
P1013122
(16+11)
BP in 9,0
Circe
1. h4 e6 2. Th3 Dxh4[+wBh2] 3. a4 g5 4. Ta3 Dxa4[+wBa2] 5. Txh7 Dc6 6. Txf7 Th7 7. Txf8 Kxf8[+wTa1] 8. Txa7 Tf7 9. Txb7 Lxb7[+wTh1]
play all play one stop play next play all
paul: Jacobi+ (in about 8 hours) (2018-9-25)
comment
Keywords: Circe, Unique Proof Game, Interchange (TT)
Genre: Retro, Fairies
Input: Gerd Wilts, 2004-3-13
Last update: A.Buchanan, 2012-5-29 more...
82 - P1014401
Aleksandr Azhusin
13639 Ideal-Mate Review 04-06/2003
P1014401
(8+2) cooked
s#11
1. Sd4 Ka3! 2. Sc2+ Ka2 3. Sb7 Kb3 4. Sd6 Ka2 5. Se4 Kb3 6. Sd2+ Ka2 7. Le6 fxe6 8. De5 exd5 9. Dd4 dxc4 10. Db6 c3 11. Db2+ cxb2#
play all play one stop play next play all
Korrektur der P1014306
Cook: 1. Sc6 Kb3 2. Dc3+ Ka2,Ka4 3. Kd2 f5 4. Ke1 f4 5. Lh3 f3 6. Da1+ Kb3 7. Sd4+ Kxc4 8. Dc1+ Kxd5 9. Sb3+ Ke4 10. Dc4+ Ke3 11. Lf1 f2#
3. ... f6 4. Se7 f5 5. Sg6 f4 6. Da1+ Kb3 7. Da3+ Kxc4 8. Sc3 Kd4,f3 9. Lb5 f3,Kd4 10. Ke1 Ke3 11. Lf1 f2#
more ...
comment
Keywords: Ideal mate
Genre: s#
Input: Frank Müller, 2004-5-1
Last update: Rainer Staudte, 2018-9-10 more...
83 - P1016268
Valery Surkov
6922 feenschach 119 01-09/1996
P1016268
(5+2) C+
s#7
1. Tc2 Ka4 2. Da6+ Kb4 3. Dc6 Ka5 4. Le1 Kb4 5. Tb2+ Ka5 6. Dd6 Ka4 7. Da3+ Txa3#
play all play one stop play next play all
1806
more ...
comment
Keywords: Aristocrat
Genre: s#
Computer test: Popeye 4.61
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-5-1
Last update: Alfred Pfeiffer, 2018-11-7 more...
84 - P1016291
Valery Surkov
3793 diagrammes 07-09/1997
P1016291
(5+2) C+
s#6
1. Dh3+ Kd5 2. Dd7+ Kc4 3. Da4+ Kd5 4. Le4+ Ke6 (doppelzügige Rückkehr) 5. Da6+ Tc6 6. Dc8+ Txc8#
play all play one stop play next play all
1846
more ...
comment
Keywords: Aristocrat, Letter problem ('A'), Switchback (k)
Genre: s#
Computer test: Popeye 4.61
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-5-1
Last update: Alfred Pfeiffer, 2018-11-7 more...
85 - P1016357
Joseph Mandelblüh
Hermann Specht

2217 Schachzeitung , p. 154, 05/1866
P1016357
(4+2)
s#5
1. Tde5+ Kf6 2. Dd8+ Kg6 3. De8+ Kf6 4. Te6+ Dxe6 5. Df7+ Dxf7#
play all play one stop play next play all
0540
Felber, Volker: Im Original steht die sD auf h3 = P1356551 (2018-10-18)
Henrik Juel: C+ by Popeye 4.61 (2018-10-18)
comment
Keywords: Aristocrat
Genre: s#
Reprints: 1894 Selbstmatt-Miniaturen Reflexmatt-Miniaturen 2003
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-5-1
Last update: Felber, Volker, 2018-9-17 more...
86 - P1017631
Michel Caillaud
3547 Phénix 91 12/2000
P1017631
(15+11)
BP in 26,5
1. a4 c5 2. a5 Db6 3. axb6 d5 4. Ta5 Lf5 5. Tb5 Ld3 6. cxd3 c4 7. Da4 c3 8. b3 c2 9. Lb2 c1=S 10. Kd1 Sa2 11. Kc2 Sb4+ 12. Kc3 S4a6 13. Da1 Sc7 14. bxc7 e5 15. c8=L Le7 16. Lf5 Lg5 17. Lg6 hxg6 18. Kb4 Th3 19. Lc3 Tf3 20. exf3 e4 21. Se2 e3 22. Sc1 e2 23. Sa2 e1=T 24. Le2 f5 25. Ld1 Te7 26. Te1 f4 27. Txe7+
play all play one stop play next play all
Schlagloser Rundlauf zweier Bauern, die anschließend auf ihrem Ausgangsfeld geschlagen werden.
paul: 1stPrize (2013-9-27)
Henrik Juel: The Prentos theme applies to t only, as the promoted s is captured by a pawn. Still a wonderful proof game (2013-9-27)
paul: C+ by Euclide 1.11 (1 hour on my PC) (2018-9-25)
comment
Keywords: Ceriani-Frolkin Theme (Lts), Unique Proof Game, Pure Round Trip (bb), Prentos Theme (ts)
Genre: Retro
Input: Gerd Wilts, 2004-7-6
Last update: Silvio Baier, 2011-7-8 more...
87 - P1017683
Andrej N. Kornilow
171v Shakhmatnaya Kompozitsiya 38 2000
Preis
P1017683
(14+12) C+
#1
1. ... Kxc7 Dd8#
R: 1. Df7xDe8+ Dd8-e8 2. De8-f7 Tf7-g7 3. Lg7-f8 Tf8-f7 4. Df7-e8 Te8-f8 5. Df8-f7 Sf7-h6 6. Sh6-g8 Tg8-h8 7. Lh8-g7 Tg7-g8 8. Lg8-h7 Th7-g7 9. Lg7-h8 Sh8-f7 10. Df7-f8 Tf8-e8 11. De8-f7 Tf7-f8 12. Lf8-g7 Tg7-f7 13. Sf7-h6 Th6-h7 14. Lh7-g8 Tg8-g7 15. Lg7-f8 Tf8-g8 16. Lg8-h7 Th7-h6 17. Lh6-g7 Tg7-h7 18. Lh7-g8 Tg8-f8 19. Df8-e8 De8-d8 20. Sd8-f7 Tf7-g7 21. Dg7-f8 Tf8-f7 22. Df7-g7 Tg7-g8 23. Lg8-h7 Th7-g7 24. Dg7-f7 Tf7-f8 25. Df8-g7 Tg7-f7 26. Df7-f8 Df8-e8 27. De8-f7 Tf7-g7 28. Lg7-h6 Th6-h7 29. Lh7-g8 Dg8-f8 30. Lf8-g7 Dg7-g8 31. Lg8-h7 Dh7-g7 32. Lg7-f8 Tf8-f7 33. Df7-e8 Te8-f8 34. Df8-f7 Sf7-h8 35. Lh8-g7 Dg7-h7 36. Lh7-g8 Dg8-g7 37. Lg7-h8 Dh8-g8 38. Lg8-h7 Th7-h6 39. Lh6-g7 Tg7-h7 40. Lh7-g8 Tg8-g7 41. Lg7-h6 Sh6-f7 42. Sf7-d8 Td8-e8 43. De8-f8 Td7-d8 44. Sd8-f7+ Tf8-g8 45. Df7-e8 Sg8-h6 46. Lh6-g7 Te8-f8 47. Dg7-f7 Tf8-e8 48. Kf7-e6 Te8-f8+ 49. Se6-d8 Td8-d7 50. Sd4-e6 e6-e5
play all play one stop play next play all
98 Einzelzüge ohne Schlag. Die letzten 89 Einzelzüge sind eindeutig.
s.a. die Versionen P1300389 und P1300399
Henrik Juel: The formal stipulation is 'solved' by
0... Kxc7 1.Dd8# (2014-4-23)
Mario Richter: What program was used to confirm the correctness of the Problem? (2018-8-27)
Henrik Juel: I see 99 single moves without capture
And it seems that the last 97 single moves are determined; if not -45... Sg8, what else? (2018-8-27)
comment
Keywords: 50 move rule, Last Moves? (89), Sliding block puzzle
Genre: Retro
Reprints: RC/75 feenschach 192, p. 343, 03-04/2012
Input: Gerd Wilts, 2004-8-7
Last update: Alfred Pfeiffer, 2018-9-7 more...
88 - P1017735
Michael Schneider
938 Die Schwalbe , p. 390, 03/1930
1. Preis
P1017735
(9+7)
#2

BS Problemid: 2566
Authors: Schneider, Michael
Sources: FIDE Album (1914-1944) (I) 1971
Years: 1930
Felber, Volker: Die Schwalbe gibt 'Michael Schneider, Würzburg' an. (2018-9-11)
Felber, Volker: Beim Nachruf in der DSZ (03/1985) steht 'Michael Schneider, Schweinfurt' (2018-9-11)
Henrik Juel: Solution 1.Dd1 Zugzwang
1... e2/L~/Lxf5/Kxf5/d5/S~ 2.Dd3/Dg4/Sc3/Df3/Ld3/Sxd6#
C+ by Popeye 4.61 (2018-9-11)
Henrik Juel: Set play
1... e2/L~/Lxf5/d5/S~ 2.Sc3/Dg4/Dh1/Sc5/Sxf6# (2018-9-11)
comment
Keywords: Brian Stephenson Collection (2566)
Genre: 2#
Reprints: 4837 Deutsche Schachzeitung , p. 111, 03/1985
Input: Brian Stephenson, 2004-8-12
Last update: Felber, Volker, 2018-9-11 more...
89 - P1017761
Lev Loshinsky
L'Italia Scacchistica 1930
1. ehrende Erwähnung
P1017761
(10+8) C+
#2
1. Tf1-b1! droht 2. d3-d4#
1. ... La1-b2 2. Dc2-f2#
1. ... Ta2-b2 2. Dc2xc3#
1. ... Lh3-e6 2. Lh2-d6#
1. ... Tg6-e6 2. Sf8-d7#
1. ... Lh3-g4 2. Lh2-g1#
1. ... Tg6-g4 2. Sf8-e6#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (2592), Grimshaw (3x)
Genre: 2#
Computer test: Popeye 4.61
Reprints: Schach-Echo , p. 62, 03/1935
Chess Problems: Introduction to an Art 1963
FIDE Album 1914-1944/I 1971
Input: Brian Stephenson, 2004-8-12
Last update: Alfred Pfeiffer, 2018-8-13 more...
90 - P1017811
Lev Loshinsky
Tijdschrift van den NSB 1930
1.-2. ehrende Erwähnung
P1017811
(6+7) C+
#2
1. Lb3! (Zugzwang)
1. ... Tb7 2. Tc6#
1. ... Tg7 2. De5#
1. ... Lb7 2. Te7#
1. ... Lg7 2. Dxf7#
1. ... Lf6 2. Dg4#
1. ... Le5 2. Dxe5#
1. ... Lxd4 2. Sxd4#
1. ... Lc6+ 2. Txc6#
1. ... f5 2. Dd6#
1. ... f6 2. De4#
1. ... Txc7 2. Sxc7#
1. ... Ta1,Ta1-a~ 2. Te7#
1. ... Th1,Th7-h~ 2. Dxf7#
play all play one stop play next play all
Mit diesem Problem eröffnete die Zeitschrift 'Leuchtrakete' eine Schachrubrik (die dem Arbeiterschach nahe stand), Redakteur: Johann Kotrc. Zum Problem heißt es dort: "Häufung von Grimshaw-Schnittpunkt-Kombinationen"

Henrik Juel: One of my favorite two-movers
more ...
comment
Keywords: Brian Stephenson Collection (2643), Grimshaw (3x)
Genre: 2#
Computer test: Popeye 4.61
Reprints: 1 Leuchtrakete 02/1931
Schach-Echo , p. 62, 03/1935
9 Volksstimme (Chemnitz) 02/07/1960
Chess Problems: Introduction to an Art 1963
271 FIDE Album 1914-1944/I 1971
13 Schach ohne Partner [Grasemann] , p. 25, 1977
Beispiele zur Ideengeschichte des Schachproblems , p. 206, 1982
Solving in Style [Nunn] 1985
Chess Wizardry [Rice] 1996
Problemas para gente sin problemas , p. 65, 2003
Nr.15 Schach , p. 69, 02/2004
Das Schach-Sammelsurium , p. 225, 2011
Input: Brian Stephenson, 2004-8-12
Last update: Alfred Pfeiffer, 2018-8-13 more...
91 - P1018299
Herman Leonard Jonsson
British Chess Magazine 1890
2. Preis
P1018299
(9+5) C+
#2
1. Lg5! (Zugzwang)
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (3132), Flight giving key
Genre: 2#
Computer test: Popeye 4.61
Reprints: 67A Simple Two-move Themes 1924
Schach-Echo , p. 132, 06/1935
Input: Brian Stephenson, 2004-8-12
Last update: Alfred Pfeiffer, 2018-8-16 more...
92 - P1019015
Joseph Ney Babson
97 Chess Problems [Rayner] 1890
P1019015
(7+4) C+
s#3
1. Th2 b4 2. Tg2 b3 3. Lf2 b2#
1. Th2 bxc4 2. Tb3+ cxb3 3. Lf2 b2#
play all play one stop play next play all
BS Problemid: 3853
Authors: Babson, Joseph Ney
Sources: Les Mille et un Mats Inverses 1907
Years: 1881
Martin Ramsauer: Urdruck: Brentano's Chess Monthly, 1882
Reprint: 760, The English Mechanic and World of Science, 30/06/1882, S. 389 (2018-9-11)
comment
Keywords: Brian Stephenson Collection (3853)
Genre: s#
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-8-12
Last update: Frank Müller, 2012-4-9 more...
93 - P1019665
Samuel Loyd
6 La Strategie 15/02/1867
dédié avec beaucoup de respect à M. (E.) Lequesne
P1019665
(7+3) C+
#2
* 1. ... f5,Ke7 2. Dxd6#
1. Dg4+! f5 2. gxf6ep#
1. ... Kd5,Ke5 2. De4#
1. ... Ke7 2. Lxd6#
play all play one stop play next play all
A.C.White in 'Sam Loyd and his chess Problems': "It was not Steinitz only that Loyd loved to try to catch, it was all humanity, or at least all that part of humanity with whom he came in contact. He always had a problem or two up his sleeve, adapted to the calibre of his audience. Probably No. 9i, simple little twomove position though it looks, caught more solvers than any other single problem of his. Its very simplicity attracted hundreds to attempt it, and when at last the utterly unexpected checking key and unique en-passant mate were discovered there followed an irresistible impulse to go and catch some of one's own friends with it."

Loyd in 'Chess Strategy': "... the solution does not show any great merit, yet from the reason that it appears to be anything but a checking problem, it is the most difficult two-move problem I have yet composed."

'DAZ' 08.10.1921: "Wer wollte die Schönheit dieser Aufgabe mit der Behauptung beanstanden, daß eine Lösung nicht mit Schach anfangen dürfe? Sie darf es nicht nur, sie muß und soll es sogar bisweilen."
Felber, Volker: Gespiegelt unter P1357643 (2018-11-11)
Henrik Juel: In the set play there is a mate ready for 1... f5,Ke7
C+ by Popeye 4.61 (2018-11-11)
comment
Keywords: Brian Stephenson Collection (4504), En passant
Genre: 2#
Computer test: Popeye 4.61
Reprints: 304 American Chess-Nuts 1867
2429 Schachzeitung 07/1867
244 Chess Strategy [Loyd] , p. 131, 1878
91 Sam Loyd and his Chess Problems 1913
69 Deutsche Allgemeine Zeitung 10/09/1921
25 Arbeiter-Schachzeitung (Chemnitz) 7, p. 212, 07/1925
91 Sam Loyd und seine Schachaufgaben 1926
Mate in two moves 1931
15 La Correspondencia de Valencia 13/07/1933
Sarkanais Sports 08/02/1941
2a-6 2345 Chess Problems 1997
Input: Brian Stephenson, 2004-8-12
Last update: Alfred Pfeiffer, 2018-11-12 more...
94 - P1019833
Theodore Morris Brown
29 American Chess-Nuts 1868
P1019833
(8+10)
#2
1. Tf5!
play all play one stop play next play all
Felber, Volker: In der Albrecht-Sammlung (Nr. 30436) wird als Quelle 'New York Clipper, 1859 genannt.

Ferner bringt die NBSZ 02/1866 diese Aufgabe verdruckt mit wDf8 (korrigiert 03/1866: wD nach d8) und der Quellenangabe 'Aus der Schweizerischen Schachzeitung'. (2018-11-1)
Henrik Juel: Key is 1.Tf5
Correct key by Popeye 4.61, but very damaged by duals (2018-11-1)
Felber, Volker: Siehe dazu auch P1357373 mit 'umgedrehtem' Brett (2018-11-5)
more ...
comment
Keywords: Brian Stephenson Collection (4673)
Genre: 2#
Reprints: 250 Neue Berliner Schachzeitung , p. 58, 02/1866
Input: Brian Stephenson, 2004-8-12
Last update: Alfred Pfeiffer, 2018-11-2 more...
95 - P1019975
James Crake
1144 Nuova Rivista degli Scacchi , p. 280, 10-11/1881
1. Preis
P1019975
(6+5) C+
#2
1. Lf5! (Zugzwang)
1. ... Kd6 2. Dd4#
1. ... Kxf5 2. Dd5#
1. ... d5 2. Df4#
1. ... d6 2. De4#
1. ... dxe6 2. Dc5#
play all play one stop play next play all
BS Problemid: 4815
Authors: Craik, J
Sources:
Years: 0000
4. Problemturnier der 'Nuova Rivista degli Scacchi', Einsendung Nr. 16, Motto: "Jeanie Deans" (Zuordnung Motto--Autor s. 'NRdSc' 01/1882,S.40: J. Crake, Hull, England)

Damenmatts auf fünf verschiedenen Feldern!

PR Gio. Batta. Valle ('Nuova Rev.', 12/1881, S.310): "Un gioiello! - Quanto sono graziosi i tre matti che scaturiscono dalle tre mosse di Pedone! - Quanta maestria in tanta semplicità! Il sacrificio d'un pezzo su due è assai brillante."
Martin Ramsauer: Quelle: Nuova Rivista degli Scacchi (wohl 1881/2; Motto: "Jeanie Deans")
Reprint: 732, The English Mechanic and World of Science, 10/02/1882, S. 555). Dort wird als Autor James Crake genannt.

1. Lf5!
1. ... Kd6 2. Dd4#
1. ... Kxf5 2. Dd5#
1. ... d5 2. Df4#
1. ... d6 2. De4#
1. ... dxe6 2. Dc5#

Damenmatts auf fünf verschiedenen Feldern! (2018-9-10)
more ...
comment
Keywords: Brian Stephenson Collection (4815)
Genre: 2#
Computer test: Henrik Juel (2018-9-10): C+ by Popeye 4.61
Reprints: 732 The English Mechanic and World of Science , p. 555, 10/02/1882
Input: Brian Stephenson, 2004-8-12
Last update: Mario Richter, 2018-9-11 more...
96 - P1020079
Frank Healey
227 The English Mechanic and World of Science , p. 23, 19/03/1875
P1020079
(7+3) C+
#2
1. De7! (Zugzwang)
1. ... Kf4 2. Se2#
1. ... Lf4 2. Lh4#
1. ... Le5 2. Lxe5#
1. ... Ld6 2. Dxd6#
1. ... Lc7 2. Dxc7#
1. ... La7 2. Dd6#, 2. Dc7#, 2. Le5#
play all play one stop play next play all
Henrik Juel: C+ by Popeye 4.61, except for trial afteer 1... La7 (2018-8-29)
more ...
comment
Keywords: Brian Stephenson Collection (4919)
Genre: 2#
Computer test: Popeye 4.61
Reprints: 15 English Chess Problems 1876
67 Revista Musical (Braslilien) 30/10/1880
A Collection of 200 Chess Problems (1908) 1908
Input: Brian Stephenson, 2004-8-12
Last update: Alfred Pfeiffer, 2018-9-11 more...
97 - P1020169
Samuel Loyd
E35 American Union 10/1858
P1020169
(7+4) C+
#2
1. Dh7 Kf6 2. Sg4#
1. ... Kd6 2. Sc4#
1. ... Kf4 2. Sd3#
1. ... Kd4 2. Sc6#
play all play one stop play next play all
Felber, Volker: Albrecht-Sammlung (22904) gibt Quelle mit 'Enigma 35, American Union X/1858' an. (2018-11-11)
comment
Keywords: Brian Stephenson Collection (5010), X flights
Genre: 2#
Reprints: 393 Neue Berliner Schachzeitung , p. 179, 06/1867
279 American Chess-Nuts 1868
1267 Leipziger Illustrirte Zeitung 29/01/1870
470 Chess Strategy [Loyd] 1878
69 Sammlung leichterer Schachaufgaben II 1882
332 Sam Loyd and his Chess Problems 1913
332 Sam Loyd und seine Schachaufgaben 1926
Input: Brian Stephenson, 2004-8-12
Last update: Alfred Pfeiffer, 2018-11-12 more...
98 - P1020174
Samuel Loyd
17 New York Saturday Press 19/02/1859
P1020174
(3+5) C+
#2
1. Da8! Ta1 2. Dxa1#
1. ... Sd3+ 2. Sxd3#
1. ... Se2 2. Sxe2#
1. ... Sf1,Sg3~ 2. Se2#
play all play one stop play next play all
MZ (50): Die Dame und ihr Kavalier ('Gehört zu Sam Loyds ersten Kompositionsversuchen')

veröffentlicht unter dem Pseudonym "by Mr. H.F.V. of New York";
das in 'Sam Loyd and his Chess Problems' angegebene und von vielen Sekundärquellen übernommene Urdruckdatum 19.02.1857 ist falsch! - Damit wohl auch MZs Annahme, daß es sich um einen der ersten Kompositionsversuche Loyds handelt ...
Mario Richter: Das falsche Datum aus 'Sam Loyd and his Chess Problems' hat seinen Weg in viele Nachdrucke und Datenbanken gefunden (z.B. '2345 Chess Problems', Anders Thulins elektronische Ausgabe der 'American Chess-nuts', YACPDB [id=15386] etc) (2018-11-12)
comment
Keywords: Brian Stephenson Collection (5016)
Genre: 2#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192 KB)
Reprints: 285 American Chess-Nuts 1868
220 Chess Strategy [Loyd] 1878
419 Sam Loyd and his Chess Problems 1913
419 Sam Loyd und seine Schachaufgaben 1926
2a-3 2345 Chess Problems 1997
Input: Brian Stephenson, 2004-8-12
Last update: Alfred Pfeiffer, 2018-11-12 more...
99 - P1020416
Walter Hood Thompson
112 Les Tours de Force 1906
nach P.A. Larsen
P1020416
(11+6) C+
#2
1. Da1!
1. ... La3 2. bxa3#
1. ... Lc5 2. b3#
1. ... La5 2. b4#
1. ... Lc3 2. bxc3#
1. ... Te3 2. fxe3#
1. ... Tf4,Txf6,Th3 2. f3#
1. ... Tf5 2. f4#
1. ... Tg3 2. fxg3#
and non-thematically
1. ... Txf2 2. Lxf2#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (5259), Albino (2)
Genre: 2#
Computer test: C+ by Popeye 4.61 Henrik Juel
Input: Brian Stephenson, 2004-8-12
Last update: Mario Richter, 2018-10-13 more...
100 - P1020434
John Ormerod Scarlett Thursby
407 The English Mechanic and World of Science , p. 490, 25/01/1878
P1020434
(8+5) C+
#2
1. Te4! (Zugzwang)
1. ... Sc1,Sb4 2. Sc3#
1. ... Sc3 2. Sxc3#
1. ... c4 2. Td4#
1. ... Kxe4 2. Dh1#
1. ... Lxa4,Lb5,Le8 2. De6#
1. ... Lh3,Lg4,Lf5,Lc8 2. Dc6#
1. ... Le6 2. Dxe6#
1. ... Lc6 2. Dxc6#, 2. De6#
play all play one stop play next play all
Cook: Mattdual
Henrik Juel: C+ by Popeye 4.61 (except for minor dual after 1... Lc6) (2018-9-1)
more ...
comment
Keywords: Brian Stephenson Collection (5277)
Genre: 2#
Computer test: Popeye 4.61
Reprints: 1 Seventy-Five Chess Problems 1883
Input: Brian Stephenson, 2004-8-12
Last update: Alfred Pfeiffer, 2018-9-14 more...
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