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3 problem(s) found in 5699 milliseconds (displaying 3 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT K='Cross-capture' AND K='A nach B'] [download as LaTeX]

1 - P1001360
Wilfried Neef
Hans-Peter Reich

Andernach TT 2001
3. Lob
P1001360a_1.png
(a: 2+2)
P1001360a_2.png
(a: 2+2)
A nach B in 9,5*
Beamtenschach
* 1. ... Tg1-f1+ 2. Kf2-e2 Tf1-d1 3. Sh1-f2 Td1-f1 4. Sf2-d1+ Kb2-a1 5. Sd1-c3 Tf1-e1+ 6. Ke2-d2 Te1-c1 7. Sc3-b5 Tc1-b1 8. Sb5-a3 Tb1-b2 9. Kd2-c1 Tb2-a2 10. Sa3-c2#
1. Sh1-g3 Tg1-f1+ 2. Kf2-e3 Tf1-f3+ 3. Ke3-e2 Tf3-c3 4. Sg3-e4 Tc3-c2 5. Ke2-d1 Tc2-c4 6. Se4-d2 Tc4-c2 7. Sd2-c4+ Kb2-a1 8. Sc4-a3 Tc2-d2+ 9. Kd1-c1 Td2-a2 10. Sa3-c2#
play all play one stop play next play all
Moldenhauer: Computerprüfung: C+ Jacobi v0.7.6 beta1 PG demolition mode
Notation B: 8/8/8/8/8//8/r1N5/k1K5 (2022-08-11)
more ...
comment
Keywords: A to B, Functionary Chess, Aristocrat
Genre: Fairies, Retro
FEN: 8/8/8/8/8/8/1k3K2/6rN
Reprints: feenschach 140 04-05/2001
Input: Gerd Wilts, 2001-09-04
Last update: Alfred Pfeiffer, 2019-03-26 more...
2 - P1362745
Per Olin
FIDE World Cup 2019
3. Preis - Bronze medal
P1362745a.png
(a: 9+15)
P1362745b_1.png
(b: 3+14)
a) PG in 19.5
b) A=>B in 16.5
a) 1. d4 h6 2. Lxh6 gxh6 3. d5 Lg7 4. d6 cxd6 5. c4 Dc7 6. c5 Kd8 7. c6 bxc6 8. e4 Lb7 9. e5 Kc8 10. e6 dxe6 11. b4 Sd7 12. b5 Kb8 13. b6 axb6 14. f4 Ta7 15. f5 Ka8 16. f6 exf6 17. g4 Se7 18. g5 Tb8 19. g6 fxg6 20. Kd2
dann (b) 20. ... h5 21. Dxh5 gxh5 22. Sc3 Sg6 23. Sd5 Sgf8 24. Kc3 cxd5+ 25. Kb4 Dc1 26. Kb5 Dh6 27. Tc1 La6+ 28. Kc6 Ld3 29. Tc5 bxc5 30. Sf3 Tb5 31. Se5 dxe5 32. Kd6 Kb7 33. Tg1 Kb6 34. Tg5 fxg5 35. Lh3 Lf6 36. Lf5 exf5
play all play one stop play next play all
Alfred Pfeiffer: In dieser Form (zwei Diagramme) sind die Aufgaben allerdings leider nicht mit den Replay-Buttons nachspielbar. (2019-04-10)
Per Olin: In final award 3rd Prize - Bronze medal. (2019-09-05)
Henrik Juel: The black h-pawn advances one step and is captured, whereupon the other black pawns each make a capture towards the SE
This is repeated in part b) (2019-09-05)
Moldenhauer: Computerprüfung: a) C+ Stelvio 1.4 00:01:39 Minute. (hh:mm:ss)
Keine Lösung: BP 19.0.
b) FEN: 5n2/r2n4/1k1K1b1q/1rpppppp/8/3b4/P6P/8 (2023-07-23)
comment
Keywords: Unique Proof Game, A to B
Genre: Retro
FEN: kr6/rbqnn1b1/1ppppppp/8/8/8/P2K3P/RN1Q1BNR
Input: Mario Richter, 2019-03-26
Last update: Marcin Banaszek, 2019-11-29 more...
3 - P1407446
Andrew Buchanan
Discord Chess Problems & Studies Server 25/01/2023
to Siegfried Hornecker
P1407446
(9+9)
A=>A in exactly 2.0 moves
16 solutions
Joost de Heer: In the diagram position, all castling rights are present. Each solution leads to a position with different castling rights remaining.

There are 4 different repetitions for white:
* 1. Rb1 2. Ra1 (Only white kingside castling still allowed)
* 1. Rh2 2. Rh1 (Only white queenside castling still allowed)
* 1. Kd2 2. Ke1 (No white castling allowed)
* 1. Sb6 2. Sc8 (All white castling allowed)

Similarly for black: 1. Rb8 2. Ra8 / 1. Rh7 2. Rh8 / 1. Kd7 2. Ke8 / 1. Sb3 2. Sc1

Each combination of these four results in a position with different castling rights, so 4*4=16 solutions.
There's one solution that breaks this pattern: all white castling allowed, no black castling allowed. Following the above scheme would result in the solution 1. Sb6 Kd7 2. Sc8 Ke8, but the first black move is not allowed, so this solution is slightly different: 1. Sd6 Kd7 2. Sc8 Ke8 (2023-02-07)
comment
Keywords: A to B, Symmetrical position, Asymmetrical solution
Genre: Retro
FEN: r1N1k1Nr/p3Pp2/7p/8/8/7P/P3pP2/R1n1K1nR
Input: A.Buchanan, 2023-01-27
Last update: A.Buchanan, 2023-01-27 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (1)
Mario Richter (1)
A.Buchanan (1)