Die Schwalbe

48 problem(s) found in 3054 milliseconds (displaying 48 problem(s)). [COMMENTDATE>=20220810 AND NOT A='Funk, Klaus' AND S='Europe Echecs'] [download as LaTeX]

1 - P0000758
Gerd Rinder
1033 Die Schwalbe 21 06/1973
1. Preis
P0000758
(7+11)
Remis (AP)
Weiß ist patt. 1. cxb6ep ist nur zulässig, wenn Schwarz diese a posteriori durch die Rochade rechtfertigt. Weiß kann aber so spielen, daß Schwarz nicht rochieren kann, z.B. 1. ... Lxc7 2. bxc7
play all play one stop play next play all
Guus Rol: This is an incorrect interpretation of the AP-convention. Rules outrank goals in the definition of all GAMES. Therefore the legitimacy of a move cannot be restricted by the desire to achieve the goal (in this case: Remis). The proper way to view AP is that executing e.p. invalidates the legitimacy of all lines of future play that do not contain 0-0-0! In that sense black and white are forced to cooperate. In whatever freedom remains they can compete for the prize promised in the stipulation. By the way, this understanding of AP is not only more logical, it is also much more interesting as a playing field for AP-composition. (2005-09-21)
mri: citeWeiß kann aber so spielen, daß Schwarz nicht rochieren kann, z.B. 1. ... Lxc7 2. bxc7
/cite
How does white prevent black from castling after 1. cxb6 e.p. Ba7xb6+?
E.g. 2.Kxb6 a1=R 3.a7 Rxa7, or 2.Ka4 Bd8xc7 3.a7 Bb8. (2005-09-22)
VL: 1.c5xb6ep(??) a7xb6+ 2.Kxb6 a1R 3.Kb7 R1xa6 4.Rc8! (R6a7#?? illegal).
This study is correct under the generally accepted understanding of AP
a la' N.Petrovic'. Antiform (looking possibly somewhat strange):
Black's unsuccessful try. (2005-10-03)
Guus Rol: Generally accepted, true. Generally acceptable, false. Freedom of interpretation ceases for a concept once its polar concept (a priori validation) has been defined. "Goal induced AP" however, might be a passable stipulation for this type of problem. To keep this place from turning into a discussion forum I will discontinue comments on this issue. (2005-10-03)
paul: Author intention is: If black still can castle, his last move must have been b7-b5. However, to prove this, he has to castle (A Posteriori condition). So: 1.cxb6 e.p. axb6+ 2.Kxb6 a1R! (2...a1Q? 3.Kb7 Qxa6 mate obviously doesn`t prove b7-b5 as the last move) 3.Kb7 R1xa6 4.Rc8! and white has prevented black from castling. So black can`t prove the last move is b7-b5 and therefor is already stalemated in the initial position! (2011-07-12)
A.Buchanan: Isn't Guus' idea just AP-Prioritat? And even if it were "more logical" or "more interesting", it doesn't follow that other forms is AP are "incorrect" (2023-07-31)
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Keywords: En passant as key, Castling (sg), a posteriori (AP)
Genre: Retro, Studies
FEN: r2bk3/p1Rpp3/P1p2p2/KpP2P2/1P2p3/1P6/p7/8
Reprints: (4) Problem 161-164 11/1973
317 Europe Echecs 217 01/1977
(A) Die Schwalbe 80 04/1983
408 Eigenartige Schachprobleme 2010
M36 mpk-Blätter 12/2011
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-07-31 more...
2 - P0000819
Josef Haas
1893 Die Schwalbe 40 08/1976
1. Preis
P0000819
(9+6)
#1 vor 4 Zügen
VRZ, Typ Hoeg
R: 1. Kh3xBg3 hxg3ep+ 2. g2-g4 Ke6xBd6 3. exd6ep+ d7-d5 4. Sc4-b6, dann 1. Sd6#
play all play one stop play next play all
Henrik Juel: It is illegal for Black to supplement anything on b6, because [Ta8] was captured in its corner and the other missing black men were captured by white pawns (2016-03-28)
Henrik Juel: ... as wLb3 is a pawn promoted on e8 or g8
Nice type Høeg defensive retractor
Here are some other explanatory comments
In retraction 1 White chooses to move his king back to h3; Black could choose to supplement a black man on g3 (or nothing), but supplementing a pawn is the only way to maintain legality (Kh3 stands in double check from Lc8 and Dh8); again moving Pg3 back to h3 and White supplementing a pawn on g4 is forced (this e.p. case is the only one where the supplementing does no happen on the abandoned square)
In retraction 2 the white retraction is forced, and then moving Kd6 back to d7 to uncheck is illegal because of the double check from Sb6 and Pc6, so Black must uncheck by moving Kd6 back to e6 and White choose to supplement a pawn on the abandoned square
In retraction 3 White chooses to move Pd6 back to e5, forcing another e.p. situation (2023-04-08)
Henrik Juel: The Proca type is easy to define: White and Black alternate retractions, until White can mate with a forward move
The Høeg type is usually defined the same way, except that the other side decides which man (if any) was captured; but this can be detailed as follows:
1. White chooses a man and 'moves it back'
2. Black chooses which man (if any) to 'supplement' on the abandoned square
(only now is the white retraction complete)
3. Black chooses a man and 'moves it back'
4. White chooses which man (if any) to 'supplement' on the abandoned square
(only now is the black retraction complete)
etc. etc. until, following a white retraction, White can mate with a forward move
In tries, Black can ruin the white plan by mating White with a forward move after a black retraction
It goes without saying that the resulting retractions must be legal
'supplement' is my (poor) translation of the danish term 'supplere'; maybe 'add' would be better
'the abandoned square' needs a special interpretation in the e.p. case, which happens twice in this problem
These details may be the cause why new type Høeg defensive retractors are rarely seen, as type Proca is more natural and straightforward (2023-04-08)
A.Buchanan: Thanks Henrik. Yesterday, I went through all the defensive retractors to clear up keywords & genres. There were a very few where the stip did not specify the VRZ Type, and others where Anticirce did not specify Calvet vs Cheylan. The answers are probably obvious to you, and if you want to comment on those, then I will update the stips & keywords.
A more general question: Typ Friedlich appears to be the German for Type Pacific: can we standardize on one? (2023-04-08)
Henrik Juel: Thanks Andrew for enabling me to post my type Høeg spiel once again
Anticirce without specification usually means that both Calvet and Cheylan work
Friedlich is indeed german for Pacific, and as the PDB is a german product, I guess we must live with the present conditions (2023-04-08)
comment
Keywords: En passant, Promotion, Defensive Retractor, Type Høeg
Genre: Retro
FEN: 2b4q/1p2p3/pNPk4/8/8/1B2R1K1/1P2PP1P/8
Reprints: feenschach 42 04-07/1978
345 Europe Echecs 241 01/1979
(5) Die Schwalbe 163 02/1997
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-04-07 more...
3 - P0001141
George Hume
Jamaica Gleaner 12/1891
Weihnachtsturnier 1891
1. Preis
P0001141
(9+9)
Auf welche Gedanken kommen Sie bei dieser Stellung?

Der Ld6 ist keine UWF und der sBg7 wurde auf seinem Ausgangsfeld geschlagen. Nach dem Autor muss der letzte Zug also Lf8-d6 gewesen sein, also illegale Stellung.
Datum der Originalpublikation nicht 100% sicher, laut ACM aus der "Jamaica Gleaner Christmas column".

Originalforderung: How has the position been arrived at and who is the winner, and in how many moves?

From the Jamaica Gleaner: "White mates in two moves. The last move made was by Black playing his Bishop and announcing mate. As it can be demonstrated that the Bishop is not a promoted Pawn and that Black's King's Knight's Pawn was captured on its original square by White's Queen's Knight's Pawn the Black Bishop must have been played from Bishop's square (f8) to Q3 (d6). This being an illegal move, White enforces the penalty of compelling Black to retract it and move his King whereupon White plays 1 PXB(Q) ch (1.gxf8=Q+) and mates next move by 2 Q-B4 (Qf4#). The following is a brief but pointed analysis, demonstrating the false move: White's Pawns have made six captures all on black squares. The Q Kt P (Pb2) made five of these and consequently captured the Kt P on the square upon which it now stands (g7). They could not have captured the Q B which is also lost. The White Bishop is the QRP (Pa2) promoted, the original KB having been captured on its own square as the unmoved Pawns show. To allow this promotion Black's QRP (Pa7) made two captures, the QKtP (Pb7) one, and the QBP (Pc7) two. The KRP (Ph7) has also made a capture, which accounts for the seven pieces White has lost. The Black Bishop is not a promoted Pawn, as if the Black KBP (Pf7) had played to the 7 th square (f2) and then captured a White piece on K or Kt square (e1 or g1) the captures by White Pawns cannot be accounted for without including the Black QB or KRP neither of which is available. As it can be demonstrated, then that the Black Bishop is not a promoted one, and that the KKtP was captured by the White Pawn which now stands on that square, in order to reach Q3 the Black Bishop must have an impossible move.

Der Kolumnist des ACM merkt aber zurecht an:
ACM: The above is a very fine piece of analytical work; but there is a slight flaw in connection with the minor condition, 'mate in two'. In a position of this kind we believe only that which can be proved; thus we do not think that White has any right to enact a penalty, as neither the analysis nor the conditions show that the Black Bishop came from Bishop's square on his last move; indeed, that Bishop may have played outside the Pawns on the very first move of the game which, being played, brought about the position.
HBae: White plays 1 PXB(Q) ch (1.gxf8=Q+). Muß der sK nicht auf f5 stehen? (2019-10-22)
Henrik Juel: Last move (supposedly) was Lf8-d6#, which is obviously impossible and hence illegal
The penalty for this is that Black must replace Ld6 on f8 AND instead make an arbitrary move with his king
So the forward play is
0... Kf5,Kf6,Kh6 1.gxf8=D+ Kg5,Ke5 2.Df4# (2019-10-22)
A.Buchanan: One long-standing approach to resolving illegal diagram jokes is to suppose that only the last move was illegal, with all prior play legal. The illegal move is then retracted, and play continues. Of course, the “illegal move” might in principle be from *any* legal position (even the game array!). So for sanity, we say the illegal move is a simple but somehow illegal shift of a single piece.

So here, candidates for the last move include Pe5-a4+, Sf4-e1+, Ke5-g5+ & B?-d6+. For all of these, White has 6 visible pawn captures, all on dark squares, so Black light-squared bishop is excluded. wPa must have promoted to light-squared bishop, so if the three Black pawns on a-file remain, there is only one unaccounted capture. Thus bPh could not promote, and must be bPg6 now. Thus bPg7 was captured at home, and bBf8 was thus locked in.

So Bf8-d6 is certainly a possible illegal move, but so are e.g. Be8-d6 (as the light-squared bishop is otherwise unexplained) and Pe5-a~. This is an example of an "implausible" joke according to Dawson & Hundsdorfer, because there is more than one retraction to the current position, and one just has to arbitrarily pick the one that makes the forward logic work. (2023-04-02)
A.Buchanan: Another issue is that according to the 1883 laws, White cannot force Black to move their king. The 1883 rules stated:
- If a player touches a piece or Pawn of his own he must move it.
- If he touches one of his adversary's he must take can be taken.
- If he touches plurality of pieces or Pawns of the same colour, in either of these instances his adversary may elect which such piece or Pawn he will call upon him to play or to take, as the case may be.
- If the rules governing the moves of pieces do not admit of the adversary exacting penalty as above, the player must move his King, but may not Castle. If the King cannot be moved without exposure to check, no penalty can then be exacted
So according to this, Black must play Bf8xPg7 as the penalty move.
Was there another revision to the rules between 1883 & 1891? (2023-04-02)
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Keywords: Illegal position, Joke, Retract illegal move (stuck at home), Touch Move, Volet Pawn, Obvious promotion (L)
Genre: Retro
FEN: 6B1/4p1P1/p2b2p1/p5kq/p7/4P1K1/2PPP1PP/3n4
Reprints: American Chess Monthly 1, p. 11, 03/1892
Jamaica Gleaner 30/04/1892
17 Europe Echecs 14 10/1959
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-04-02 more...
4 - P0001185
Zdravko Maslar
(291) Problem 45-48 11/1957
16. TEMATSKOG TURNIRA "PROBLEMA" 1.-2. Preis e.a.
P0001185
(4+9)
Welches war der letzte Zug?
R: 1. Tc8xDb8
play all play one stop play next play all
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comment
Keywords: Last Move? (TxD), Type B (a fortiori), Type A
Genre: Retro
FEN: BR1rk3/1pKppRp1/1pp2p2/8/8/8/8/8
Reprints: 58 Europe Echecs 36 08/1961
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-22 more...
5 - P0001270
Matti Arvo Myllyniemi
142 Europe Echecs 84 01/1966
P0001270
(15+15) C+
BP in 9.5
1. e3 d5 2. Lc4 d4 3. Se2 d3 4. 0-0 dxc2 5. d4 Kd7 6. d5 Kd6 7. Dd4 Sd7 8. Ld2 c1=L 9. Lb4+ c5 10. dxc6ep+
play all play one stop play next play all
more ...
comment
Keywords: Unique Proof Game, En passant, Non-standard material (l), Castling (wk), Promotion (l), Valladao Task (sww)
Genre: Retro
Computer test: Ergänzung Stelvio 1.2 C+: Keine Lösung: BP 8.5, 9.0. 10. dxc6ep++ Doppelschach.
FEN: r1bq1bnr/pp1npppp/2Pk4/8/1BBQ4/4P3/PP2NPPP/RNb2RK1
Reprints: 92 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-25 more...
6 - P0001285
Jean Oudot
370 Die Schwalbe 07/1960
R. Bédoni gewidmet
P0001285
(11+11) C+
h#2*
* 1. ... dxc5 2. Dxh3 0-0-0#
1. Db2 Le2+ 2. Kc2 Ld1#
play all play one stop play next play all
Henrik Juel: the five missing black men were captured by white pawns (exfxgxh, fxgxj), so with Black to move last move was with Ta1 or Ke1, and White may not castle
C+ Popeye 4.61 (2022-11-26)
A.Buchanan: Pleasant White tempo play in both phases (2022-11-27)
comment
Keywords: Cant Castler (wl), Castling (wl)
Genre: Retro, h#
Computer test: HC+ Popeye 4.61 with simple retro logic
FEN: 8/7p/7P/2pr2pP/2bP2Pb/2pk1BRP/6qN/R3KNrn
Reprints: 553 FIDE Album 1959-1961 1966
157 Europe Echecs 90 07/1966
(10) diagrammes 112 01-03/1995
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-11-27 more...
7 - P0001349
Jean Oudot
Echiquier de France 1957
P0001349
(14+7)
#2
Rosalie Fay: White has lost only the bishops. So the pawn on c5 is not [Pa7] (because that entails 2 White units captured on black squares). White has played axbxcxdxe7, dxe, fxe, hxg, gxfxe. Black has 7 units, so white pawns have captured all missing Black units, but none on the a or h files.

Black has 2 pawns on the c-file, so one has captured. Thus [bPa7] and [bPh7] pawns have collectively captured no more than once. So at least one of them must have promoted, in order to either get to a file where White made a capture, or replace a captured unit; it didn't capture en route to promotion, so it displaced a white rook and thus spoilt one White castling right.

White would mate by 1 Rd1 & 2 Rd6 or 1 Rf1 & 2 Rf6, except that Black threatens Qxe2+. So either 1 0-0 or 1 0-0-0, though it's impossible to say which is legal. (2022-11-24)
Henrik Juel: one solution, but in two parts
if Ta1 has moved, 1.0-0 thr. 2.Dc8,Tf6#
if Th1 has moved, 1.0-0-0 thr. 2.Dg8,Td6# (2022-11-25)
Hans-Jürgen Manthey: nach der möglichen Zugfolge: 1. Sb1-c3 c7-c6 2. Sc3-d5 Dd8-b6 3. Sg1-f3 Db6-b3 4. a2xDb3 a7-a5 5. Sd5-b4 a5-a4 6. Sb4-a2 e7-e5 7. Sf3-h4 Lf8-c5 8. Sh4-g6 f7-f5 9. Sg6-f4 g7-g5 10. Sf4-g6 Lc5-e3 11. d2xLe3 f5-f4 12. g2-g3 Ta8-a5 13. g3xf4 g5-g4 14. f4xe5 g4-g3 15. h2xg3 h7-h5 16. Lf1-g2 h5-h4 17. Lc1-d2 h4-h3 18. Ld2-b4 Th8-h4 19. c2-c3 Th4-c4 20. Sa2-c1 a4-a3 21. Lb4-c5 a3-a2 22. Dd1-d4 Sb8-a6 23. Dd4-h4 Sa6-c7 24. Dh4-d8+ Ke8-f7 25. b3xTc4 Sc7-d5 26. c4xSd5 Sg8-e7 27. d5-d6 Ta5-b5 28. d6xSe7 d7-d6 --- folgt nun
29. Lg2-e4 Lc8-e6 30. Le4-b1 a2xLb1D 31. Th1-g1 Db1-d3 32. Sc1-b3 Le6-c4 33. Th1-g1 h3-h2 34. Dd8-e8+ Kf7-e6 35. Tg1-h1 Tb5-b6 36. Th1-g1 Le6-c4 37. Tg1-h1 h3-h2 38. Th1-g1 h2-h1D 39. Sc1-b3 Dh1-e4 40. f2-f3 Lc4-a6 41. f3xDe4 d6xLc5 42. Dd8-e8+ Kf7-e6 43. Tg1-h1 Dd3-b5 matt in 2:
1. OOO droht 2. De8-g8/Td1-d6# - 1. ... Db5-d3 2. Sb3xc5# oder:
29. Sc1-b3 h3xLg2 30. Sb3-d2 g2-g1D+ 31. Sd2-f1 Dg1-g2 32. Sf1-d2 Dg2-e4 33. f2-f3 Tb5-b6 34. f3xDe4 d6xLc5 35. Sd2-b3 Lc8-e6 36. Ta1-b1 Le6-c4 37. Ta1-b1 Kf7-e6 38. Tb1-a1 Lc4-a6 39. Ta1-b1 a2-a1D 40. Dd8-e8 Da1-a4 41. Tb1-a1 Da4-b5 matt in 2: 1. OO bel. 2. De8-c8/Tf1-f6# (2023-02-22)
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Keywords: Partial Retro Analysis (PRA), Castling (wb)
Genre: Retro, 2#
FEN: 4Q3/1p2P3/brp1k1N1/1qp1P3/4P3/1NP1P1P1/1P2P3/R3K2R
Reprints: 223 Europe Echecs 130 09/1969
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-11-26 more...
8 - P0001420
Branko Koludrovic
294 Europe Echecs 197 04/1975
1. ehrende Erwähnung
P0001420
(13+12) C+
h#3*
1. ... cxd6ep 2. 0-0-0 0-0-0 3. Kd7 Sa7#
1. De7 c6 2. Th8 c7 3. Tf8 Sd6#
play all play one stop play next play all
White pawn caps: axb,dxe,gxf,hxg.
Black: fxg,bxc,cxb.
wPb4 came from b3 to release wBa3, so bPb3 captured to reach that square.
All pcs accounted for means bPd never captured.
In the set play, there are 13 retro tries in which one or both players do not castle. The intention is that both castling rights are needed in order to imply the pawn double hop.
A.Buchanan: White pawn caps: axb,dxe,gxf,hxg definite.
Black: fxg and two to resolve c-file. But that may be c&d cross-capture, so in set play last move might have been c6xd5. So I think this problem is cooked. What am I missing? (2022-03-21)
Mario Richter: If Black's last move was c6xd5, how do you get white Bishop a3 out of his cage? (In that case, black pawn b7 never left the b-file). (2022-03-21)
A.Buchanan: I agree Mario thanks (2022-03-21)
Hans-Jürgen Manthey: beide Rochaden und im Satz ep. ist möglich:
R.: 1. ... d7-d5 2. Sa7-b5 b5xTc4 3. Tg4-c4 Dd8-h4 4. c4-c5 Th8-h3 5. c2-c4 c4xDb3 6. Dd3-b3 h3-h2 7. Dd1-d3 h4-h3 8. Sc8-a7 h5-h4 9. Th4-g4 c5-c4 10. Th1-h4 h7-h5 11. h2xSg3 Sf5-g3 12. b3-b4 Sh6-f5 13. Lb4-a3 c7-c5 14. Ld2-b4 g3-g2 15. Lc1-d2 a3-a2 16. a2xSb3 Sc5-b3 17. Lb3-a4 Sa6-c5 18. Lc4-b3 Sb8-a6 19. d2xLe3 Lc5-e3 20. Ld3-c4 Lf8-c5 21. Lf5-d3 a4-a3 22. Lh3-f5 a5-a4 23. Lf1-h3 g4-g3 24. g2xLf3 Lb7-f3 25. Sb6-c8 Lc8-b7 26. Sa4-b6 a7-a5 27. Sc3-a4 b7-b5 28. Sb1-c3 f5xSg4 29. Se5-g4 Sg8-h6 30. Sf3-e5 e7-e6 31. Sg5-f3 f6-f5 32. Sh3-g5 f7-f6 33. Sg1-h3 (2023-02-23)
comment
Keywords: a posteriori (AP) (Type Petrovic), En passant as key, Castling (wgsg)
Genre: h#, Retro
Computer test: HC+ Popeye v4.87 & retro-logic.
FEN: r3k3/6p1/4p3/1NPp4/BPp4q/Bp2PPPr/pP2PPpp/R3K3
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-03-21 more...
9 - P0001427
Karl Fabel
Am Rande des Schachbretts 1947
P0001427
(13+14) C+
BP in 41,5
1. Sf3 a5 2. Sd4 a4 3. Sb3 axb3 4. a3 Ta4 5. Ta2 bxa2 6. Tg1 axb1=S 7. Th1 Sc3 8. Tg1 Sb5 9. Th1 Sa7 10. Tg1 b5 11. Th1 Lb7 12. Tg1 Ld5 13. Th1 La2 14. b3 h5 15. Lb2 h4 16. Lf6 h3 17. Lh4 Sf6 18. Da1 Sh5 19. Df6 Tf4 20. Da6 e6 21. Kd1 Dg5 22. Kc1 Dg3 23. hxg3 Lc5 24. gxf4 Le3 25. Lg3 Ke7 26. Lh2 Kf6 27. g3 Kf5 28. Lg2 Kg4 29. La8 Sbc6 30. Kb2 Tb8 31. Ta1 Lb1 32. Lg1 h2 33. Kc3 Kh3 34. Kd3 Kg2 35. Ke4 Kf1 36. Kf3 Ke1 37. Kg4 Kd1 38. Kg5 f6+ 39. Kg6 Kc1 40. Kf7 Sd8+ 41. Ke8 Kb2 42. Ta2+
play all play one stop play next play all
Sally: Eine eindeutige BwP., die lange Zeit den Längenreord hielt und, wenn auch mit langer Verzögerung, wesentlich zum Boom dieser Gattung in den letzten 15 Jahren beigetragen hat. Im-
mer noch eine faszinierende Aufgabe. Nr. KF-13 Schwalbe Okt. 2005. (2011-12-05)
Moldenhauer: Ergänzung: Keine Lösung: BP 40.5, BP 41.0. (2023-05-20)
comment
Keywords: Unique Proof Game, Move Length Record, Non-standard material, Promotion
Genre: Retro
Computer test: Stelvio 1.17, in 3h.
FEN: Br1nK3/n1pp2p1/Q3pp2/1p5n/5P2/PP2b1P1/RkPPPP1p/1b4B1
Reprints: 1366 FIDE Album 1945-1955 1964
301 Europe Echecs 200 07/1975
(VIII) feenschach 28 05-07/1975
feenschach 38 04-06/1977
78 Shortest Proof Games 11/1991
17a 64 Proof Games 2012
Input: Gerd Wilts, 1995-06-03
Last update: Reto, 2023-04-14 more...
10 - P0001450
Henri Nouguier
324 Europe Echecs 223 07/1977
P0001450
(13+3)
h#1
hans: 1. Th2xf2 De1xf2#!
1. Th2xh3 0-0#? (Castling illegal)

R: -1. Kf1xSe1 Sg2-e1 -2. Ke1-f1 Sf4-g2+ -3. Tg1-h1 Sd5-f4 -4. Tf1-g1 Se3-d5 -5. Tg1-f1 Sf1-e3 -6. Tg1-h1 Tg2-h2 -7. Th2-h1-g1 Tg1-g2 -8. Th1-h2 g2-g1=T -9 h2-h3 h3xSg2 (2010-06-26)
HENRI: Hans solution has a tipo. Their is no D (=Queen in german) mating. One should read the solution in german : 1. Th2xf2 Ke1xf2#! 1.Th2xh3 0-0#?
or in english : 1. Rh2xf2 Ke1xf2#! 1.Rh2xh3 0-0#? (Castling illegal) (2023-10-25)
comment
Keywords: Cant Castler, Castling (wk)
Genre: h#, Retro
FEN: 8/8/8/8/8/PPP3PP/B1rPPP1r/BNk1K2R
Input: Gerd Wilts, 1995-06-03
11 - P0001550
Michel Caillaud
421 Europe Echecs 295 07/1983
A. Hazebrouck gewidmet
1. Preis
P0001550
(13+12) C+
BP in 35.5
1. h4 c5 2. h5 c4 3. Th4 c3 4. Tc4 b5 5. g4 b4 6. Lg2 b3 7. Lc6 bxa2 8. b4 a5 9. b5 a4 10. b6 a3 11. La4 Sc6 12. b7 d5 13. b8=D d4 14. Dd6 d3 15. Dg6 dxc2 16. d3 fxg6 17. Ld2 c1=L 18. Db3 c2 19. La5 Lh6 20. Sd2 c1=L 21. Sf1 Lcg5 22. f4 Kf7 23. 0-0-0 a1=L 24. fxg5 a2 25. gxh6 Kf6 26. Sh2 Kg5 27. Tf1 Lf6 28. Tff4 a1=L 29. Kb1 Lae5 30. d4 Lb7 31. dxe5 Dd2 32. exf6 Te8 33. f7 Sf6 34. Dd3 Sd7 35. Ld1 Sdb8 36. Sgf3+
play all play one stop play next play all
5 Frolkin-Ceriani-Umwandlungen: 4 schwarze Läufer und 1 weiße Dame! Eine der bahnbrechenden frühen KBPs.
Silvio Baier: Der wesentliche thematische Inhalt ist bereits nach 31,5 Zügen erreicht. Bis dahin ist es C+ (Euclide 0.98). (2010-08-04)
James Malcom: Is this fully C+ then? (2021-01-27)
Henrik Juel: No, only the first 31.5 moves are tested OK (2021-01-27)
James Malcom: No Henrik, as in is the entire problem testable. (2021-01-27)
Henrik Juel: I guess that testing the entire problem would take an unreasonably long time (2021-04-06)
A.Buchanan: It might be possible these days: the motivation for stopping at 31.5 is that the promotion theme had been demonstrated by then. But there’s still e.g. bSb8 as random impostor (2021-04-07)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 50:24:34 Stunden.(hh:mm:ss)
Keine Lösung: BP 34.5, BP 35.0. (2023-05-08)
Henrik Juel: Thanks for your patience, Moldenhauer; more than two days... (2023-05-08)
comment
Keywords: Ceriani-Frolkin Theme (llllD), Unique Proof Game, Castling, Promotion (llllD), Impostor (s)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.11 50:24:34 Stunden.(hh:mm:ss) Keine Lösung: BP 34.5, BP 35.0.
FEN: 1n2rb1r/1b2pPpp/2n3pP/B5kP/2R2RP1/3Q1N2/3qP2N/1K1B4
Reprints: 25 Shortest Proof Games 11/1991
(1) diagrammes 103 10-12/1992
(A) Quartz 22 10-12/2002
(8-a) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 1995-06-03
Last update: James Malcom, 2021-04-07 more...
12 - P0001569
Andrey Frolkin
439v Europe Echecs 310 10/1984
Lob
P0001569
(12+14) cooked
BP in 27,0
1. f4 h5 2. f5 h4 3. f6 h3 4. fxe7 f5 5. d4 Kf7 6. e8=T Kg6 7. Te6+ Kh5 8. Ta6 bxa6 9. Dd2 Lb7 10. e4 Lc6 11. e5 La4 12. e6 Sc6 13. e7 Db8 14. e8=T Db3 15. Te5 Te8 16. d5 Te6 17. dxe6 Lb4 18. Ta5 Lc3 19. Lb5 f4 20. e7 f3 21. e8=T f2+ 22. Ke2 f1=S 23. Tb8 Sxh2 24. Tb6 cxb6 25. Sf3 bxa5 26. Se5 Sf3 27. Sg4 Sfd4+
play all play one stop play next play all
Cook: 1. f4 h5 2. f5 h4 3. f6 h3 4. fxe7 f5 5. e4 Kf7 6. e8=T f4 7. Te6 f3 8. Ta6 bxa6 9. e5 Kg6 10. e6 Lb7 11. e7 Lc6 12. e8=T La4 13. Te5 Sc6 14. Ta5 Db8 15. d4 Db3 16. Lb5 f2 17. Ke2 f1=S 18. Sf3 Te8 19. Se5 Kh5 20. d5 Te6 21. dxe6 Sxh2 22. e7 Sf3 23. e8=T Lb4 24. Tb8 Lc3 25. Tb6 cxb6 26. Sg4 bxa5 27. Dd2 Sd4
more ...
comment
Keywords: Ceriani-Frolkin Theme (TTT), Unique Proof Game, Non-standard material, Promotion (s)
Genre: Retro
Computer test: Computerprüfung: Cooked Stelvio 1.11 1 Sekunde. Keine Lösung: BP 26.0, BP 26.5.
FEN: 6nr/p2p2p1/p1n5/pB5k/b2n2N1/1qb4p/PPPQK1P1/RNB4R
Reprints: 21 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-08 more...
13 - P0001572
Andrey Frolkin
442 Europe Echecs 313 01/1985
P0001572
(15+13) C+
BP in 16,5
1. Sc3 Sf6 2. Sd5 Se4 3. Sxe7 Sg5 4. Sg6 Lb4 5. e3 d6 6. Se2 Kd7 7. Sc3 Kc6 8. Sb1 Sd7 9. Lb5+ Kxb5 10. Sxh8 c6 11. Sxf7 Da5 12. Se5 Sb6 13. Sf3 Ld7 14. Sg1 Te8 15. f3 Te4 16. Kf2 Le8 17. Kg3
play all play one stop play next play all
more ...
comment
Keywords: Unique Proof Game, Interchange (SS)
Genre: Retro
Computer test: Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong Ergänzung: Stelvio 1.2. Keine Lösung BP 15.5, BP 16.0.
FEN: 4b3/pp4pp/1npp4/qk4n1/1b2r3/4PPK1/PPPP2PP/RNBQ2NR
Reprints: 67 Shortest Proof Games 11/1991
(2) Quartz 21 07-09/2002
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-21 more...
14 - P0001573
Dmitri W. Pronkin
443 Europe Echecs 313 01/1985
P0001573
(16+14) C+
BP in 24,0
1. h4 g5 2. h5 Lg7 3. Th4 Lc3 4. bxc3 Sf6 5. La3 Sd5 6. Ld6 Sf4 7. Sa3 Sh3 8. gxh3 g4 9. Lg2 g3 10. Ld5 g2 11. Sf3 g1=L 12. Kf1 Lh2 13. Kg2 Le5 14. Dg1 Lg7 15. Kg3 b5 16. Kf4 b4 17. Dg6 b3 18. Kg5 b2 19. Lb3 b1=S 20. c4 Sc3 21. Tb1 Sd5 22. Tb2 Sf6 23. Sb1 Sg8 24. Df6 Lf8
play all play one stop play next play all
more ...
comment
Keywords: Unique Proof Game, Homebase (S), Pronkin Theme (ls)
Genre: Retro
Computer test: Natch 2.4 Ergänzung Stelvio 1.2. Keine Lösung BP 23.0, BP 23.5.
FEN: rnbqkbnr/p1pppp1p/3B1Q2/6KP/2P4R/1B3N1P/PRPPPP2/1N6
Reprints: 46 Shortest Proof Games 11/1991
(19a) Die Schwalbe 232 08/2008
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-21 more...
15 - P0001577
Michel Caillaud
447 Europe Echecs 316 04/1985
2. Preis
P0001577
(14+11) C+
BP in 26,5
1. f4 h5 2. f5 h4 3. f6 h3 4. fxe7 hxg2 5. h4 g5 6. h5 g4 7. Th4 g3 8. Sh3 g1=L 9. Lg2 Le3 10. Lc6 g2 11. dxe3 g1=T+ 12. Kf2 Tg3 13. e4 Tb3 14. axb3 f5 15. Ta6 f4 16. La4 f3 17. Kg3 f2 18. Th6 f1=D 19. Dd6 Df7 20. Lf4 Dc4 21. bxc4 a5 22. Lb3 a4 23. Da6 a3 24. Ld6 a2 25. Sf4 axb1=S 26. La2 Sc3 27. bxc3
play all play one stop play next play all
Erstdarstellung einer Frolkin-Ceriani-Allumwandlung in einer eindeutigen KBP.
more ...
comment
Keywords: Allumwandlung, Ceriani-Frolkin Theme (dtls), Unique Proof Game, Homebase (S)
Genre: Retro
Computer test: Euclide 0.93 Ergänzung Stelvio 1.2. Keine Lösung BP 25.5, BP 26.0.
FEN: rnbqkbnr/1pppP3/Q2B3R/7P/2P1PN1R/2P3K1/B1P1P3/8
Reprints: 13 Shortest Proof Games 11/1991
(19) diagrammes 15 07-09/1994
Thema Danicum 106 2002
(B) Quartz 26 10-12/2004
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-21 more...
16 - P0001580
Dmitri W. Pronkin
450 Europe Echecs 319/320 07-08/1985
P0001580
(12+11) cooked
BP in 31,5
1. b4 h5 2. Lb2 h4 3. Dc1 h3 4. Kd1 hxg2 5. h4 e5 6. h5 e4 7. h6 e3 8. h7 exf2 9. e4 f5 10. Se2 g1=L 11. Lg2 f1=L 12. e5 Lb6 13. d4 Lfc5 14. dxc5 f4 15. cxb6 f3 16. Df4 f2 17. Sc1 La6 18. Sd2 f1=L 19. Tb1 Lfb5 20. c4 Se7 21. cxb5 Tg8 22. hxg8=L g5 23. Lc4 d5 24. bxa6 Lf5 25. e6 Sc8 26. e7 Kf7 27. e8=L+ Kg8 28. Leb5 c6 29. Tf1 cxb5 30. Tf2 Sc6 31. Sf1 dxc4+ 32. Ld5+
play all play one stop play next play all
Cook: 1. b4 e5 2. Lb2 e4 3. Dc1 e3 4. Kd1 exf2 5. g4 Ld6 6. g5 Lxh2 7. g6 Kf8 8. gxf7 g5 9. Lg2 f1=L 10. e4 Lb5 11. Se2 Lg1 12. Th4 h5 13. e5 Kg7 14. c4 Th6 15. cxb5 Ta6 16. Tc4 Lc5 17. d4 h4 18. e6 h3 19. e7 h2 20. e8=D d5 21. bxa6 Se7 22. Db5 c6 23. Sd2 cxb5 24. Sf1 h1=D 25. f8=T Dh6 26. Tf2 Db6 27. Df4 Lf5 28. Tb1 Kg8 29. dxc5 Sc8 30. cxb6 Sc6 31. Sc1 dxc4+ 32. Ld5+
Paulo Roque: obs: Cook: 26...D6b6 (2008-12-24)
paul: See P0001634 as correction. (2010-09-25)
Moldenhauer: Computerprüfung: Cooked Stelvio 1.6 in 31:54:04 Stunden. (hh:mm:ss).
1 Lösung mit 20 cooks. (2024-01-07)
comment
Keywords: Ceriani-Frolkin Theme (lllLL), Unique Proof Game, Promotion (lllLL)
Genre: Retro
FEN: r1nq2k1/pp6/PPn5/1p1B1bp1/1Pp2Q2/8/PB3R2/1RNK1N2
Reprints: 26 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2021-04-06 more...
17 - P0001600
Pascal Wassong
470 Europe Echecs 334 10/1986
P0001600
(13+14) cooked
BP in 20,0
1. b4 c5 2. b5 Sc6 3. bxc6 b5 4. c7 La6 5. c8=L d6 6. Lf5 Tc8 7. d4 Tc6 8. d5 Db8 9. dxc6 e6 10. c7 Le7 11. c8=S Ld8 12. Se7 Lb6 13. Sg6 hxg6 14. h4 Ke7 15. h5 Kf6 16. h6 Se7 17. h7 Te8 18. h8=T gxf5 19. Th4 Sg6 20. Te4 fxe4
play all play one stop play next play all
Cook: 1. b4 c5 2. b5 Sc6 3. bxc6 b5 4. d4 La6 5. d5 Tc8 6. d6 Tc7 7. dxc7 Db8 8. c8=L d6 9. Lf5 e6 10. h4 Ke7 11. h5 Kf6 12. c7 Le7 13. c8=S Ld8 14. Se7 Lb6 15. Sg6 Se7 16. h6 hxg6 17. h7 Te8 18. h8=T gxf5 19. Th4 Sg6 20. Te4 fxe4
Henrik Juel: Dual: ... 4.d4 La6 5.d5 Tc8 6.d6 Tc7 7.dxc7 Db8 8.c8L d6 9.Lf5 ... (2004-02-12)
more ...
comment
Keywords: Ceriani-Frolkin Theme (TLS), Unique Proof Game, Homebase (W), Promotion
Genre: Retro
Computer test: Ergänzung Stelvio 1.2. Keine Lösung BP 19.0, BP 19.5.
FEN: 1q2r3/p4pp1/bb1ppkn1/1pp5/4p3/8/P1P1PPP1/RNBQKBNR
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-21 more...
18 - P0001605
Dmitri W. Pronkin
Andrey Frolkin

475 Europe Echecs 337 01/1987
P0001605
(1+16) C+
BP in 17.0
1. d3 h6 2. Lg5 hxg5 3. h4 Txh4 4. a4 Txa4 5. Th6 Sxh6 6. g4 Sxg4 7. Lg2 Sxf2 8. Lc6 Sxc6 9. d4 Sxd4 10. c4 Sxe2 11. c5 Sxg1 12. c6 dxc6 13. Dd4 Dxd4 14. Ta3 Dxb2 15. Th3 Lxh3 16. Sc3 0-0-0 17. Sd5 Txd5= patt
play all play one stop play next play all
Henrik Juel: Black makes 15 captures.
The first 13.0 moves are correct by Euclide 1.0, but it takes some 4 minutes, so a complete test would probably take more than a day (2014-12-09)
paul: Jacobi checked the last 16 moves (in about 20 min). (2018-05-10)
Mario Richter: I would like to label this problem as a "Massacre PG", but the current definition of that term only knows of two-sided MPGs. Perhaps we could make the same differentiation as for "Homebase"?!
Btw., wasn't "popeye" best for such massacres?
rawbats confirms complete correctness of the problem after approx. 25 minutes. (2018-05-11)
Henrik Juel: Yes, Mario, Popeye is fairly good at this type
C+ by Popeye 4.61 in 57 minutes (2018-05-11)
A.Buchanan: @Mario: yes I agree it would be good to make massacre more specific. There are 69 massacres currently, almost all 2-sided, but maybe also some series-movers (unique or non-unique) which are currently not counted? (2018-05-12)
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comment
Keywords: Unique Proof Game, Castling, Homebase (w), Rex solus (w), Massacre PG
Genre: Retro
Computer test: C+ rawbats. C+ by Popeye 4.61 in 57 minutes. C+ Stelvio 1.2 2 Sekunden. Keine Lösung: BP 16.0, BP 16.5.
FEN: 2k2b2/ppp1ppp1/2p5/3r2p1/r7/7b/1q3n2/4K1n1
Reprints: 116 Shortest Proof Games 11/1991
20a 64 Proof Games 2012
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-21 more...
19 - P0001617
Michel Caillaud
487 Europe Echecs 346 10/1987
P0001617
(9+7) cooked
#1 vor 12
VRZ, Typ Proca
paul: Cooked in 4: 1.Ke5-e6! b2×Ba1=B+ -2.Kf4×Pe5 e6-e5+ -3.Rc2×Sg2 Se1-g2+ -4.Re2×Pc2 & 1.Rxe1# (2023-06-14)
comment
Keywords: En passant, Defensive Retractor, Type Proca
Genre: Retro
FEN: 8/4p3/3PK1P1/8/1B5p/1P1qPP1p/P5Rp/b2k4
Input: Gerd Wilts, 1995-06-03
Last update: Gerd Wilts, 2004-08-28 more...
20 - P0001629
Andrey Frolkin
498 Europe Echecs 355/356 07-08/1988
2. ehrende Erwähnung
P0001629
(14+14) C+
BP in 26,5
1. Sc3 c5 2. Sd5 c4 3. Sxe7 c3 4. Sg6 hxg6 5. Sf3 Th5 6. Sd4 Ta5 7. Sb5 f5 8. Sa3 Df6 9. Sb1 La3 10. Tg1 d6 11. Th1 Ld7 12. Tg1 La4 13. Th1 Kd7 14. Tg1 Kc6 15. Th1 Kb5 16. Tg1 Sc6 17. Th1 Te8 18. Tg1 Te3 19. Th1 Td3 20. cxd3 c2 21. Tg1 cxd1=S 22. Th1 Sc3 23. Tg1 Se4 24. Th1 Dc3 25. Tg1 Sgf6 26. Th1 Se8 27. Tg1
play all play one stop play next play all
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 1 Sekunde.
Keine Lösung: BP 25.5, BP 26.0. (2023-04-02)
comment
Keywords: Unique Proof Game, Non-standard material, Pendulum (T x15), Promotion, Impostor (S)
Genre: Retro
Computer test: Stelvio 1.11
FEN: 4n3/pp4p1/2np2p1/rk3p2/b3n3/b1qP4/PP1PPPPP/RNB1KBR1
Reprints: 502 Europe Echecs 358 10/1988
102 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: James Malcom, 2023-05-02 more...
21 - P0001634
Dmitri W. Pronkin
503v Europe Echecs 358 04/1989
5. Preis
P0001634
(12+11) C+
BP in 31,0
1. b3 h5 2. La3 h4 3. Dc1 h3 4. Kd1 hxg2 5. h4 e5 6. h5 e4 7. h6 e3 8. h7 exf2 9. e4 f5 10. Se2 g1=L 11. Lg2 f1=L 12. e5 Lb6 13. d4 Lfc5 14. dxc5 f4 15. cxb6 f3 16. Df4 f2 17. Sc1 La6 18. Lc5 f1=L 19. a3 Lfb5 20. c4 Se7 21. cxb5 Tg8 22. hxg8=L g5 23. Lc4 d5 24. bxa6 Lf5 25. e6 Sc8 26. e7 Kf7 27. e8=L+ Kg8 28. Leb5 c6 29. Ta2 cxb5 30. Tc2 Sc6 31. Sa2 dxc4+
play all play one stop play next play all
paul: Correction of P0001580 (2010-09-25)
Silvio Baier: Mit 30....dc+ ist das C+ (Euclide 0.98, Retractor für den letzten Zug) (2011-07-08)
James Malcom: So this is fully C+? (2021-01-27)
Henrik Juel: No, another problem in 30.0 moves ending with 30. Tc2 dxc4+ is tested OK (2021-01-27)
more ...
comment
Keywords: Ceriani-Frolkin Theme (lllLL), Unique Proof Game, Promotion (lllLL)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.11 65:30:51 Stunden. (hh:mm:ss) Keine Lösung: BP 30.0, BP 30.5.
FEN: r1nq2k1/pp6/PPn5/1pB2bp1/2p2Q2/PP6/N1R3B1/1N1K3R
Reprints: 580 Ukrainisches Album 1986-1990
26 Shortest Proof Games 11/1991
H25 FIDE Album 1986-1988 1995
(H25) Die Schwalbe 156, p. 237, 12/1995
feenschach 141 06/2001
Thema Danicum 105 2002
(C) Quartz 22 10-12/2002
H2 The Problemist 07/2010
(18) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-08 more...
22 - P0001637
Andrej N. Kornilow
Andrey Frolkin

506v Europe Echecs 364 04/1989
P0001637
(16+10) C+
BP in 13,5
2 solutions
1. Sc3 c5 2. Sd5 c4 3. Sxe7 c3 4. Sxg8 Dh4 5. Sh6 g5 6. Sxf7 Lg7 7. Se5 0-0 8. Sxd7 Lh8 9. Sxb8 Ld7 10. Sc6 Tc8 11. Sxa7 La4 12. Sb5 Tc6 13. Sa3 b5 14. Sb1
und
1. Sf3 c5 2. Se5 c4 3. Sxd7 c3 4. Sxb8 Ld7 5. Sc6 Tc8 6. Sxa7 La4 7. Sc6 b5 8. Sxe7 Tc6 9. Sxg8 Dh4 10. Sh6 g5 11. Sxf7 Lg7 12. Se5 0-0 13. Sf3 Lh8 14. Sg1
play all play one stop play next play all
Moldenhauer: Ergänzung: Stelvio 1.2. Keine Lösungen BP 12.5, BP 13.0.
Es ist wirklich eine Rarität dass es 2 komplette Lösungen gibt. (2023-05-20)
comment
Keywords: Unique Proof Game, Homebase (W), Initial Game Array (W), Castling
Genre: Retro
Computer test: Natch 2.2 Copyright (C) 1997,98,99,2001,2002,2003 Pascal Wassong Ergänzung: Stelvio 1.2. Keine Lösungen BP 12.5, BP 13.0.
FEN: 5rkb/7p/2r5/1p4p1/b6q/2p5/PPPPPPPP/RNBQKBNR
Reprints: 569 Ukrainisches Album 1986-1990
140 Shortest Proof Games 11/1991
(10) diagrammes 15 07-09/1994
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-21 more...
23 - P0001638
Michel Caillaud
507 Europe Echecs 364 04/1989
2. ehrende Erwähnung
P0001638
(13+13) C+
BP in 24,5
1. f3 c6 2. Kf2 Db6+ 3. Kg3 Dxg1 4. h4 Dxf1 5. h5 Dxh1 6. h6 Dh5 7. hxg7 Sh6 8. g8=S Lg7 9. a4 Lc3 10. a5 f6 11. a6 Kf7 12. axb7 Kg6 13. Txa7 Sf7 14. Ta1 Ta4 15. Sh6 Sa6 16. b8=T Tf8 17. Tb4 Sh8 18. Th4 Tf7 19. Th1 Th4 20. Sg4 Sb4 21. Sf2 La6 22. Sh3 Ld3 23. Sg1 Kg5 24. Kf2 Lg6 25. Ke1
play all play one stop play next play all
Schlag von wSg1 und wTh1 auf ihren Ursprungsfeldern. Anschließend werden die beiden Orginalsteine durch UW-Steine ersetzt.
paul: The last moves are: 14.Ta1 Ta4 15.Sh6 Sa6 16.b8=T Tf8 17.Tb4 Sh8 18.Th4 Tf7 19.Th1 Th4 20. Sg4 Sb4 21. Sf2 La6 22. Sh3 Ld3 23. Sg1 Kg5 24. Kf2 Lg6 25. Ke1
Phoenix-Pronkin theme: wNg1 & wRh1 are promoted, here combined with wK-switchback. (2008-03-24)
more ...
comment
Keywords: Unique Proof Game, Pronkin Theme (TS), Switchback (KT)
Genre: Retro
Computer test: Euclide 0.96 Ergänzung: Stelvio 1.2. Keine Lösung: BP 23.5, BP 24.0.
FEN: 7n/3ppr1p/2p2pb1/6kq/1n5r/2b2P2/1PPPP1P1/RNBQK1NR
Reprints: 43 Shortest Proof Games 11/1991
H16 FIDE Album 1989-1991 1997
feenschach 141 06/2001
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-21 more...
24 - P0001640
A. d'Ales
509 Europe Echecs 367/368 07/1989
P0001640
(15+16) cooked
KBP in 25,0
NL: 1. b4 a5 2. h4 d6 3. Th3 g6 4. Te3 Lg7 5. g3 Lc3 6. Lh3 Ta6 7. Kf1 Tc6 8. Kg2 b6 9. Kf3 Dd7 10. Ke4 Tc4+ 11. Kd5 Dxh3 12. Sf3 Lg4 13. Sd4 Sd7 14. Sb3 Td4+ 15. Kc6 Se5+ 16. Kb7 Kd7 17. Dh1 Ke6 18. Kc8 Lh5 19. Da8 Kf5 20. g4+ Kf4 21. f3 Kg3 22. Kd8 Kf2 23. Ke8 Ke1
AL wurde nie veröffentlicht.
play all play one stop play next play all
Moldenhauer: Computerprüfung: Cooked Stelvio 1.6 01:00:21 Stunde. (hh:mm:ss)
1.Sf3 a5 2.b4 g6 3.h4 Lg7 4.Th3 Lc3 5.Sd4 Ta6 6.Te3 Tc6 7.g3 Tc4 8.Lh3 d6 9.Kf1 Dd7
10.Kg2 Dxh3+ 11.Kf3 Lg4+ 12.Ke4 Sd7 13.Kd5 b6 14.Sb3 Td4+ 15.Kc6 Se5+ 16.Kb7 Kd7
17.Dh1 Ke6 18.Kc8 Kf5 19.Da8 Lh5 20.g4+ Kf4 21.f3 Kg3 22.Kd8 Kf2 23.Ke8 Ke1
Keine Lösung: BP 22.5.
Wenn die Forderung KBP 25.0 richtig ist dann Cooked. (2023-09-28)
comment
Keywords: Interchange, Non-Unique Proof Game, Non-Unique Proof Game
Genre: Retro
FEN: Q3K1nr/2p1pp1p/1p1p2p1/p3n2b/1P1r2PP/1Nb1RP1q/P1PPP3/RNB1k3
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2014-05-21 more...
25 - P0001641
Francois Brassaud
510 Europe Echecs 367/368 07/1989
A. Hazebrouck gewidmet
P0001641
(13+14) cooked
KBP?
1. h4 e5 2. h5 Ke7 3. h6 Kd6 4. hxg7 Kc5 5. Th6 Kb4 6. Tc6 h5 7. e4 h4 8. Ke2 h3 9. Kf3 Th4 10. Le2 Sh6 11. g8=L f6 12. Lb3 h2 13. c4 h1=S 14. Dc2 Sg3 15. fxg3 a5 16. g4 a4 17. g5 axb3 18. g6 bxc2 19. g7 cxb1=T 20. g8=D
play all play one stop play next play all
Cook: 1. c2-c4 a7-a6 2. e2-e4 e7-e6 3. f2-f4 h7-h5 4. Dd1xh5 Ke8-e7 5. Dh5-b5 Th8-h4 6. Ke1-e2 Th4-g4 7. h2-h4 a6xb5 8. h4-h5 b5-b4 9. h5-h6 Ke7-d6 10. h6-h7 Kd6-c5 11. Th1-h6 Tg4-h4 12. h7-h8=D g7-g6 13. Dh8-c3 b4xc3 14. Ke2-f3 c3-c2 15. f4-f5 c2xb1=T 16. f5xg6 Kc5-b4 17. g6-g7 e6-e5 18. Th6-c6 f7-f6 19. Lf1-e2 Sg8-h6 20. g7-g8=D (H. Juel)
more ...
comment
Keywords: Allumwandlung, Ceriani-Frolkin Theme (Ls), Unique Proof Game, Non-standard material
Genre: Retro
Computer test: Euclide 1.01 Moldenhauer: Computerprüfung: Cooked Stelvio 1.11 2 Sekunden. Keine Lösung: BP 18.5, BP 19.0. KBP = 19.5.
FEN: rnbq1bQ1/1ppp4/2R2p1n/4p3/1kP1P2r/5K2/PP1PB1P1/RrB3N1
Reprints: 135 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-04-15 more...
26 - P0001657
Philippe Leroy
526 Europe Echecs 376 04/1990
P0001657
(13+11) cooked
BP in 37,0
1. h4 d5 2. h5 d4 3. h6 d3 4. hxg7 h5 5. g4 h4 6. g5 h3 7. e4 h2 8. Sh3 Th6 9. Tg1 h1=D 10. e5 Dc6 11. Lg2 Dc3 12. dxc3 Tc6 13. e6 Sh6 14. g8=L Lg7 15. exf7 Kf8 16. Sd2 e5 17. Sf3 e4 18. Sh4 d2 19. Ke2 e3 20. Kf3 e2 21. g6 e1=D 22. Tb1 Dee7 23. De1 d1=T 24. Lg5 Da3 25. bxa3 Td4 26. Tb3 Tb4 27. cxb4 Lb2 28. Le7 Kg7 29. f8=S Sa6 30. Lc4 Sf7 31. Sd7 Kh6 32. Sb6 cxb6 33. g7 Sc7 34. La6 bxa6 35. g8=T Lb7 36. Tg5 Tc8 37. Ta5 bxa5
play all play one stop play next play all
Cook: 1. h4 d5 2. h5 e5 3. h6 f5 4. hxg7 h5 5. Sa3 h4 6. Sc4 h3 7. Sb6 h2 8. e4 Th3 9. exf5 Ta3 10. Sh3 Sa6 11. Tg1 h1=D 12. g4 Df3 13. f6 Dc3 14. dxc3 cxb6 15. Tb1 Sc7 16. La6 bxa6 17. bxa3 Lb4 18. cxb4 Sh6 19. g8=L d4 20. Ld5 Kf8 21. Lg2 e4 22. Ke2 e3 23. Kf3 e2 24. f7 Kg7 25. f8=S e1=L 26. Sg6 Lc3 27. Sh4 d3 28. g5 d2 29. De1 d1=T 30. g6 Td6 31. Lg5 Tc6 32. Le7 Sf7 33. Tb3 Kh6 34. g7 Lb2 35. g8=T Lb7 36. Tg5 Tc8 37. Ta5 bxa5
A.Buchanan: The unsoundness in this non-unique PG is that 6 promotions (apparently intended) are not forced (2023-05-11)
more ...
comment
Keywords: Ceriani-Frolkin Theme (dLdtST), Promotion, Non-Unique Proof Game, konsekutive Umwandlungen 6
Genre: Retro
Computer test: Computerprüfung: many solutions Stelvio 1.11 48 Sekunden. Keine Lösung: BP 36.0, BP 36.5.
FEN: 2rq4/pbn1Bn2/p1r4k/p7/1P5N/PR3K1N/PbP2PB1/4Q1R1
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-11 more...
27 - P0003366
Laszlo Lindner
3040v Europe Echecs 07-08/1982
P0003366
(8+16)
h#2
b) sBc7 nach f6
a) 1. Dc4 Lxb6+ 2. c5 dxc6ep#
b) 1. fxe3ep Lxb4 2. Sc4 bxc3#
play all play one stop play next play all
Lindner in 'Mattbilder eines Lebens':
In a) ist die Lösung der stellung b) nicht möglich, weil das e.p.-Schlagen durch Schwarz nicht legal ist. Der letzte Zug von Weiß muß nicht unbedingt e2-e4 geweseb sein. Es kommt als letzter zug auch Kh3-g2 in Betracht, mit den vorherigen Zügen h4:g3 e.p.+ und g2-g4.
In b) demgegenüber sind Kh3-g2 und vorher f4:g3 e.p. illegal, weil die Rücknahme von g2-g4 unmöglich ist: der sB würde 7 Schlagfälle benötigen, und es fehlen nur 6 weiße Steine. Der letzte weiße Zug muß also e2-e4 gewesen sein.
In 'Mattbilder eines Lebens' abgedruckt mit sTh7 statt h8 und der Quellenangabe: Europe Echecs, 1964
AB: (1) Where is wK?
(2) Why is 1.fxe3ep legal in b) but not a)? (2002-01-31)
Henrik Juel: wK is probably on g2. In part a) last move could have been Kh3-g2, I think (2002-02-01)
A.Buchanan: Very convincing, Henrik. I've repaired the diagram accordingly. (2023-05-28)
comment
Keywords: En passant as key, En passant in the retro play
Genre: h#, Retro
FEN: 7r/2pn4/1nqRb3/B2Pp3/pb1kPp2/2p2Pp1/1PP2pKp/7r
Reprints: 501 Mattbilder eines Lebens , p. 379, 1996
Input: Gerd Wilts, 1995-06-03
Last update: Mario Richter, 2023-05-28 more...
28 - P0006492
Thierry Le Gleuher
601v Europe Echecs 438 10/1995
P0006492
(16+13) C+
BP in 21,0
1. h4 a5 2. h5 Ta6 3. h6 Tb6 4. hxg7 Tb3 5. Th6 b5 6. Ta6 h5 7. axb3 h4 8. Ta4 h3 9. Th4 h2 10. c4 h1=T 11. Dc2 Th3 12. Dg6 Tc3 13. Th1 Thh3 14. Db6 Thf3 15. exf3 a4 16. Ld3 a3 17. Le4 a2 18. d3 a1=T 19. Le3 Ta4 20. Ld4 Tb4 21. Ta1 Ta4
play all play one stop play next play all
White Rooks are permuted. Black Rooks are promotees. A very nice maneuver.
Moldenhauer: Computerprüfung: C+ Stevio 1.11 00:49:45 Minuten.(hh:mm:ss)
Keine Lösung: BP20.0, BP 20.5. (2023-03-16)
Henrik Juel: Hello Moldenhauer
Your tests with Stelvio are much appreciated
Did you notice any improvement by version 1.11 over version 1.0? (2023-03-16)
Moldenhauer: Hallo Henrik Juel
Danke! Seit der neuen Version Stelvio 1.11 hat sich die Anzahl der Strategien reduziert.
Beispiel: P1000406 von 6775 auf 4994, was natürlich das Tempo erhöht. Habe ich zufällig bemerkt.
Dieses Beispiel habe ich auch gespeichert. Herr Reto Aschwanden schrieb glaube ich auch darüber.
Bei mir laufen immer mehrere Stelvios gleichzeitig. Vielleicht ist mein Rechner deshalb
gegenüber anderen langsamer. AMD Ryzen 3950X 16 Kerne 3 Jahre alt. (2023-03-16)
Henrik Juel: Thanks, Moldenhauer (2023-03-20)
comment
Keywords: Unique Proof Game, Interchange (TT), Promotion
Genre: Retro
Computer test: Stelvio 1.11
FEN: 1nbqkbn1/2ppppP1/1Q6/1p6/r1PBB3/1PrP1P2/1P3PP1/RN2K1NR
Input: Gerd Wilts, 1996-06-16
Last update: Silvio Baier, 2023-03-20 more...
29 - P0007029
Philippe Leroy
623 Europe Echecs 447 07/1996
P0007029
(12+13) cooked
BP in 32,0
1. h4 Sf6 2. h5 Se4 3. h6 Sg5 4. hxg7 h5 5. a4 h4 6. a5 h3 7. a6 h2 8. axb7 hxg1=S 9. Ta6 Th2 10. Tg6 fxg6 11. e4 Kf7 12. Dh5 gxh5 13. e5 Kg6 14. e6 Kh6 15. exd7 e5 16. c4 e4 17. c5 e3 18. c6 Lc5 19. Sa3 Dg8 20. d8=S e2 21. Se6 exf1=L 22. Sf4 Le6 23. Sh3 Sd7 24. b8=D La2 25. Db3 Tb8 26. Dd1 Tb3 27. f4 Tf3 28. Sc2 Db3 29. g8=L Lb5 30. Lc4 a6 31. Lf1 Se2 32. Sg1 Lf2+
play all play one stop play next play all
paul: Correction of P0005875. (2011-06-02)
paul: Dans une version ultérieure, Mr.Leroy a remplacé 30.-a6 avec 30.-a5. Dans un e-mail, il m'a expliqué: La version de ce problème avec 30...a6 a été démolie par Thierry le Gleuher, d'une manière presque plus compliquée que la solution
de l'auteur. En résumé de sa démolition, le PN en a6 peut n'avoir joué qu'un seul coup, mais par b7xa6!
La version avec le PN en a5 est donc une correction de ce grave défaut.
Donc, Thierry, quel était cette démolition explicitement? (2011-06-09)
paul: Démoli(T. le Gleuher) : 1.c4 g5 2.Da4 g4 3.D×a7 g3 4.f4 g×h2 5.Df2 Ta3 6.Rd1 Tf3 7.a4 e5 8.a5 e4 9.a6 e3 10.Ta5 e×f2 11.Ch3 Cf6 12.Tg1 h×g1=C 13.Th5 Ce4 14.c5 Cg5 15.c6 Fc5 16.e4 0-0 17.Fc4 f1=F 18.F×f7+ Rg7 19.e5 Fb5 20.Fc4 Tf6 21.Ff1 Ce2 22.Cg1 Dg8 23.e6 Th6 24.Th1 Th2 25.e×d7 h5 26.d8=D Fe6 27.Dd3 Fa2 28.Dc2 Db3 29.Re1 Rh6 30.Dd1 b×a6 31.Ca3 Cd7 32.Cc2 Ff2?
La correction avec 30.-a5 a été publié dans Europe-Échecs 452/1997. (2011-06-12)
Joost de Heer: The position with a5 is also cooked:
1. h4 Nf6 2. h5 Ne4 3. h6 Ng5 4. hxg7 h5 5. a4 h4 6. a5 h3 7. a6 h2 8. axb7 hxg1=N 9. Ra6 Rh2 10. Rg6 a5 11. e4 fxg6 12. Qh5 Kf7 13. e5 gxh5 14. e6+ Kg6 15. exd7 e5 16. Na3 e4 17. c4 e3 18. c5 e2 19. c6 Bc5 20. f4 Qg8 21. d8=N Be6 22. Nf7 Nd7 23. b8=Q Ba2 24. Qb3 exf1=B 25. Ne5+ Kh6 26. Qd1 Qb3 27. g8=B Bb5 28. Bc4 Re8 29. Bf1 Ne2 30. Nf3 Re3 31. Ng1 Rf3 32. Nc2 Bf2# (2023-07-26)
comment
Keywords: Unique Proof Game, Pronkin Theme (DLS)
Genre: Retro
FEN: 8/2pn4/p1P4k/1b4np/5P2/1q3r2/bPNPnbPr/2BQKBNR
Input: Gerd Wilts, 1996-08-12
Last update: Gerd Wilts, 2004-08-29 more...
30 - P0008537
Michel Caillaud
615v Europe Echecs 452 01/1997
P0008537
(14+9) C+
BP in 21,5
1. d3! Sc6 2. d4 Se5 3. dxe5 Sf6 4. exf6 Tg8 5. fxg7 f6! 6. gxf8=S Tg3 7. hxg3 f5 8. Th6 f4 9. Td6 exd6 10. Se6 Dh4 11. Sc5 Dh3 12. gxh3 h6! 13. Lg2 h5 14. Lc6 dxc6 15. Kf1 Le6 16. Kg2 Lb3 17. axb3 0-0-0 18. Ta6 Td7 19. Tb6 a6! 20. Sa4 a5 21. Ta6 c5 22. Ta8#
play all play one stop play next play all
Vladimir Rey: C+ Natch 3.2 - Solution found: 1. Positions analysed: 51578. Resolution time: 5 h 33 mn 32.84 s. (2020-05-08)
Vladimir Rey: Check please: Keywords Tempo Loss. (2022-09-05)
comment
Keywords: Unique Proof Game, Castling, Tempo Loss (Bbb), Non-standard material (S), Cross-capture
Genre: Retro
Computer test: Natch 3.2
FEN: R1k5/1ppr4/3p4/p1p4p/N4p2/1P4PP/1PP1PPK1/1NBQ2N1
Reprints: H14 FIDE Album Annexe 1995-1997 2004
Input: Gerd Wilts, 1997-01-02
Last update: A.Buchanan, 2020-05-08 more...
31 - P0509691
Didier Innocenti
360/12 Europe Echecs 12/1988
P0509691
(3+4) cooked
h#5
1. La7 Kg3 2. Kb6 Kf2 3. Kc5 Ke2 4. Kd4 Lh4 5. Lc5 Lf6#

NL:
1. Ld4 Kg4 2. Kb6 Kf4 3. Le5+ Ke3 4. Kc5 Kd2 5. Kd4 Lf2#
play all play one stop play next play all
Yuri Bilokin: possibly bPe4(-bBe4) 8/8/k7/3p4/4p2K/1P2b3/8/4B3 (3+4) (2023-01-11)
comment
Keywords: Check Protection
Genre: h#
FEN: 8/8/k7/3p4/4b2K/1P2b3/8/4B3
Input: Markus Manhart, 1997-06-26
Last update: hpr, 1999-10-18 more...
32 - P1038102
Jean-Claude Letzelter
Europe Echecs 1978
P1038102
(3+8) C+
#4
1. Txh3+ gxh3+ 2. Kf3 g4+ 3. Kxf4 g3 4. hxg3#
play all play one stop play next play all
BS Problemid: 23052
Authors: Letzelter, Jean-Claude
Sources:
Years: 1978
Joaquim Crusats: The three bPs on the f column seem to be superfluous. Am I missing something here? (2006-12-09)
Z Kornin: For me, it seems that even the Nh3 is superfluous - and the three Ps 'f' too (2006-12-12)
Henrik Juel: C+ Popeye 4.61 (2022-12-10)
Henrik Juel: 1.Txh3+ gxh3+ 2.Kf3 g4+ 3.Kxf4 g3 4.hxg3# (2022-12-10)
Mario Richter: Without all the superfluous pieces you get P1164361

One can find some more similiar problems with the following PDB-search:
((PROBID='P1038102') OR ((POSITION='wKg2 sKh4') AND (SOL='T%h3%xh3%K%f3%g4'))) AND STIP='#4' (2022-12-21)
Yuri Bilokin: Strangely, P1038102 is the only "author" task in the database. (2022-12-22)
Mario Richter: I've added another threemover by Letzelter (P1406807). Seems he composed mostly studies - the Endgame Study Database by Harold van der Heijden contains approx. 60 studies of Letzelter. (2022-12-23)
Yuri Bilokin: Sorry, by "strangely" I meant P1164361 (no place or date of publication). (2022-12-23)
comment
Keywords: Brian Stephenson Collection (23052)
Genre: n#
Computer test: Henrik Juel (2022-12-10): C+ Popeye 4.61
FEN: 8/8/5p2/5ppp/5ppk/6Rn/6KP/8
Input: Brian Stephenson, 2004-08-12
Last update: Mario Richter, 2022-12-21 more...
33 - P1038465
Pierre Drumare
Roger Diot

Europe Echecs 1972
1. Preis
P1038465
(11+10)
#5

BS Problemid: 23416
Authors: Drumare, Pierre
Diot, Roger
Sources:
Years: 1972
SCHRECKE: 1. Da6! droht 2. Ld3,d3 a2 3. Dc8#
1. ... a2! 2. Lb5 a1=D 3. Dxa1 Kxe4 4. Df1 Kxd5,Kd4 5. Dc4#
4. ... Tf5 5. Dc4,Dd3# (Mattdual) (2023-07-03)
comment
Keywords: Brian Stephenson Collection (23416)
Genre: n#
FEN: 8/K1p5/2Pp2p1/3Ppkrb/1p2N1p1/pP1Q2P1/2PP2P1/5B2
Input: Brian Stephenson, 2004-08-12
34 - P1053626
Erwin Moritz Herbert Guttmann
Europe Echecs 1963
P1053626
(2+9) C+
#4
1. Td4! g2 2. Td5 Sg3 3. Kg6 d2,~ 4. Td8#
1. ... Le4 2. Txe4 g2 3. Kg6 d2,~ 4. Te8#
play all play one stop play next play all
BS Problemid: 38669
Authors: Guttmann, Erwin MH
Sources:
Years: 1963
more ...
comment
Keywords: Brian Stephenson Collection (38669), Minimal
Genre: n#
Computer test: C+, Gustav 4.2e, Brute Force 1. Td4! g2 2. Td5 Sg3 3. Kg6 b2,~ 4. Td8# 1. ... Le4 2. Txe4 g2 3. Kg6 b2,~ 4. Te8#
FEN: 7k/3R1K2/8/8/8/3pp1pp/5b2/5nrb
Input: Brian Stephenson, 2004-08-12
Last update: A.Buchanan, 2023-08-09 more...
35 - P1058070
Barry Peter Barnes
Europe Echecs 1960
1. Preis
P1058070
(12+7) C+
#2
1. Sc3? droht 2. Dg7# 1. ... Txb6 2. Sb5# 1. ... Txf2 2. Se2# 1. ... dxc5!

1. Td4! droht 2. Dg7# 1. ... Txb6 2. Tb4# 1. ... Txf2 2. Td2#
play all play one stop play next play all
Breuer: Entfesselung in Verführung und Spiel mit gleicher Thematik (s-w Grimshaw), Mattwechsel.
more ...
comment
Keywords: Brian Stephenson Collection (43129), Changed mates, Grimshaw (s-w), Unpinning
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 1K6/1Q5b/1P1pp3/2PPk3/R3N1RN/p7/1r3P1b/B4B2
Reprints: 163 FIDE Album 1959-1961 , p. 44, 1966
1542 Beispiele zur Ideengeschichte des Schachproblems , p. 310, 1982
Barnes about Chess Problems 2001
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-03-07 more...
36 - P1124414
Jaques Fulpius
296/A Europe Echecs 07/1983
P1124414
(4+3) C+
#3
1. Kb4! d5 2. Sg2+ Kd3 3. Se1#
1. ... d3 2. Sg6+ Kd5 3. Se7#
play all play one stop play next play all
H.Henneberger: Erste korrekte Darstellung des Grunenwald-Thema in Miniaturform.
Definition: Siers-Batterie, die dank alternativem Block zweier K-Fluchtfelder
funktioniert, die der Springer freigeben muß.
SX6
more ...
comment
Keywords: Miniature Collection (0043557), Zugzwang-Goal, Miniature, Blocknutzung
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/8/3p4/8/2NpkNQ1/1K6/8/8
Reprints: 129 Schweizer Schachkompositionen 1976-1986 , p. 51, 1989
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2022-09-07 more...
37 - P1126434
J. Chenais
Edmond Bernard

2829 Europe Echecs 07/1980
P1126434
(4+3) C+
#4
1. Le1! a5 2. Sd2 Kb4 3. Se4+ Ka4 4. Sc5#
play all play one stop play next play all
INLS SX6
more ...
comment
Keywords: Miniature Collection (0337565), Miniature
Genre: n#
Computer test: SCHRECKE: Gustav 4.2b
FEN: 8/8/pK6/B7/k1N5/p7/B7/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Dieter Berlin, 2023-10-22 more...
38 - P1136829
Jean Oudot
53 Europe Echecs 03/1967
P1136829
(5+1)
#2
1. Df3
play all play one stop play next play all
z06
SCHRECKE: C+, popeye 4.87
1. Df3! (Zugzwang)
1. ... Ke6 2. Df6#
1. ... Ke8 2. Df8# (2023-07-22)
comment
Keywords: Miniature Collection (0311054)
Genre: 2#
FEN: 8/2K1k2N/8/6PQ/4P3/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Zuncke/Bruder, 2010-09-11 more...
39 - P1163516
Fabrice Touvron
369/8 Europe Echecs 09/1989
P1163516
(4+3)
#3
1. Lf5
play all play one stop play next play all
B12L
SCHRECKE: C+, popeye 4.87
1. Lf5! f6 2. Lb8 d3 3. La7# (2023-07-20)
comment
Keywords: Miniature Collection (0337390)
Genre: 3#
FEN: 8/B4p2/8/8/3p4/4k3/2B2R2/6K1
Input: Zuncke/Bruder, 2010-09-12
Last update: Zuncke/Bruder, 2010-09-12 more...
40 - P1169770
Jean-Yves Spiess
Europe Echecs 1993
P1169770
(5+2)
#2
1. Sf5
play all play one stop play next play all
A16-4S- m
SCHRECKE: C+, popeye 4.87
1. Sf5! droht 2. Se7#
1. ... Kxf5 2. Df6#
1. ... Lc5 2. Dg4#
1. ... Lg5 2. Dh7# (2023-08-05)
comment
Keywords: Miniature Collection (0315899)
Genre: 2#
FEN: 6K1/8/3N2k1/4P3/7Q/4bP2/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Zuncke/Bruder, 2010-09-12 more...
41 - P1171003
Sujunbek I. Bolotbekow
391/7 Europe Echecs 07/1991
P1171003
(4+2)
#3
1. Sc4
play all play one stop play next play all
A12-33-
SCHRECKE: C+, popeye 4.87
1. Sc4! Kb3 2. Db2+ Ka4 3. Ld1#
1. ... e5 2. Db7 Kc3,~ 3. Db2# (2023-05-23)
comment
Keywords: Miniature Collection (0337396)
Genre: 3#
FEN: 8/4p1Q1/8/N7/8/8/2k1B3/7K
Input: Zuncke/Bruder, 2010-09-12
Last update: Zuncke/Bruder, 2010-09-12 more...
42 - P1171102
Abdelaziz Onkoud
451 Europe Echecs 12/1996
P1171102
(3+2)
#11
1. Sd5 Kb8 2. Se7 Ka8 3. Kg3 Kb8 4. Kf4 Ka8 5. Ke5 Kb8 6. Kd6 Ka8 7. Sc6 bxc6 8. Kc7 c5 9. b7+ Ka7 10. b8=D+ Ka6 11. Db6#
play all play one stop play next play all
B3g
SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-11-17)
comment
Keywords: Miniature Collection (0337595), anticipated (P1116906)
Genre: n#
FEN: k7/1p6/1P6/8/1N6/8/7K/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2023-11-17 more...
43 - P1173088

243 Europe Echecs 03/1979
P1173088
(4+1) C+
#2
1. Sc4-d2! (Zugzwang)
1. ... Ke6-d5 2. Dc7-d7#
1. ... Ke6-f5 2. Dc7-f7#
play all play one stop play next play all
Die Zeitschrift "Europe Echecs" hat diese Aufgabe unter dem Namen Karol Wojtyla veröffentlicht.
Tomasz Lissowski bestreitet dies auf der Website www.szachowavistula.pl/vistula/vatican.htm
Teppo Mänttä: Reprint: Miniature Chess Problems From Many Countries (Colin Russ), 1981 (2023-10-08)
comment
Keywords: Miniature Collection (0033978)
Genre: 2#
Computer test: %Popeye FreeBSD-5.4-RELEASE-i386-32Bit v4.55
FEN: 8/2Q5/4k3/8/2NB3K/8/8/8
Reprints: I Szachy , p. 302, 10/1979
251 Razem 23 07/06/1987
Input: Felber, Volker, 2010-09-12
Last update: Marcin Banaszek, 2021-11-29 more...
44 - P1398815
Godehard Murkisch
Europe Echecs 1969
1. Preis
Mehrzüger
P1398815
(6+16) C+
#11
1. Ke7! Lb4+ 2. Kf6 Lc3+ 3. Kg5 Ld2+ 4. Kh4 Le1+ 5. Df2 Lxf2+ 6. Kg5 Le3+
7. Kf6 Ld4+ 8. Ke7 Lc5+ 9. Kd8 Lb6 10. Kc8 ... 11. Lxb7#
play all play one stop play next play all
more ...
comment
Keywords: Sperr-Römer
Genre: n#
Computer test: A. Baumann: Gustav 4.2a
FEN: k2K4/prPP3p/p1B1P1b1/b2p3p/4p3/5p1p/1n2r2Q/1qn5
Reprints: Die Schwalbe 9, p. 243, 06/1971
Input: Dieter Berlin, 2022-02-01
Last update: Dieter Berlin, 2024-03-14 more...
45 - P1404456
Garen Yacoubian
Europe Echecs 1971
4. ehrende Erwähnung
Informalturnier
P1404456
(9+10) C+
#3
1. Scb6? droht 2. Sc4# 1. ... droht 2. Sd7# 1. ... f4 2. Se7 Se3 3. d4# 1. ... Sf6!
1. Sce7? droht 2. Sg6# 1. ... f4 2. Sb6 Se3 3. d4# 1. ... Lxc5!

1. Sde7! f4 2. Sb6 Se3 3. d4#
1. ... Kf4 2. Sg6+ Kg5 3. f4#
play all play one stop play next play all
more ...
comment
Keywords: Flight-giving key, Pawn mate (zweifach), Blocknutzung
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 2N3B1/1p4K1/8/2PNkp1p/6nr/2P2Ppq/3P2P1/1b4b1
Reprints: 133 Kunstschach in der Schweiz , p. 77, 1980
Input: Dieter Berlin, 2022-09-18
Last update: Dieter Berlin, 2022-09-18 more...
46 - P1404646
Garen Yacoubian
Europe Echecs 1971
2. Preis
Informalturnier Mehrzüger
P1404646
(8+7) C+
#6
1. Sg2! Sf3 2. Sh4+ Sxh4 3. Se2 Se4 4. Sg3+ Sxg3 5. Lc8 ... 6. Lxd7#
play all play one stop play next play all
more ...
comment
Keywords: Springerduell, Knight sacrifice (doppelt)
Genre: n#
Computer test: SCHRECKE: Gustav 4.2b
FEN: 8/3p1K2/B1p5/2np1k2/3n1P2/3PP2P/8/b1N1N3
Reprints: 215 Kunstschach in der Schweiz , p. 119, 1980
Input: Dieter Berlin, 2022-09-25
Last update: Dieter Berlin, 2022-09-25 more...
47 - P1408051
Arnoldo Ellerman
Europe Echecs 1961
1. Preis
P1408051
(10+13) C+
#2
1. Lxd5? droht 2. Sc4#/Ld4#/Dxc7#/Dxg7#/Dxh5# 1. ... Lxe4!

1. exd5! Se4 2. Sc4#
1. ... Le4 2. Ld4#
1. ... Tf5 2. Dxc7#
1. ... Lf5 2. Dxg7#
1. ... Sd3 2. Dxh5#
play all play one stop play next play all
more ...
comment
Keywords: Mehrfachdrohung (fünffach), Capture key, Task (Construction), Fleck Theme, Theme B2, Blocknutzung, Line closing, Dual avoidance
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 4N3/B1n2Qb1/4P3/K2pk2r/R3Pp1p/NB4pp/2bR1n2/2r3q1
Reprints: 1570 Beispiele zur Ideengeschichte des Schachproblems , p. 317, 1982
Input: Dieter Berlin, 2023-03-05
Last update: Dieter Berlin, 2023-03-06 more...
48 - P1413416
Jaques Fulpius
Europe Echecs 1982
P1413416
(3+7) C+
#9*
* 1. ... Lg1 2. Sd2#

1. Kd2! Lg1 2. Sxh4 Lh2 3. Sf3 Lg1 4. Sd4 Lh2 5. Se2 h4 6. Kd1 Lg1 7. Sd4 Lh2 8. Sf3 Lg1 9. Sd2#
play all play one stop play next play all
more ...
comment
Keywords: Mutate
Genre: n#
Computer test: SCHRECKE: Gustav 4.2e
FEN: 8/8/8/7p/7p/5NpB/5pnb/3K1k2
Reprints: 246 Schweizer Schachkompositionen 1976-1986 , p. 91, 1989
Input: Dieter Berlin, 2023-11-08
Last update: Dieter Berlin, 2023-11-08 more...
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