Die Schwalbe

2 problem(s) found in 8281 milliseconds (displaying 2 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND G='Retro' AND K='Home Circuit'] [download as LaTeX]

1 - P1380681
Marco Bonavoglia
RIFACE 2015
6th Place
P1380681
(16+16)
BP in 6.0
Anti take&make
Henrik Juel: Solution
1.e4 f5 2.exf5 [+bPf4] g5 3.fxg6 e.p. [+bPg4] Sf6 4.g7 Bxg7 [+wPg8=B] 5.Bxh7 [+bPh5] Sxh7 [+wBd3] 6.Bde2 O-O
The Capture-free keyword is misleading: there are lots of captures, but the captured men 'make' a move to re-appear (2020-10-06)
A.Buchanan: Yes Henrik I started putting that on before I read the definition. I will pull those tags off soon. (2020-10-07)
more ...
comment
Keywords: Anti-take&make, RIFACE Retro Composition Tourney (2015), Unique Proof Game, Home Circuit (wBe)
Genre: Retro, Fairies
Computer test: C+ Jacobi
FEN: rnbq1rk1/ppppp1bn/8/7p/5pp1/8/PPPPBPPP/RNBQKBNR
Input: A.Buchanan, 2020-10-05
Last update: A.Buchanan, 2020-12-22 more...
2 - P1390918
Lion Xray
Facebook 17/06/2021
Happy Birthday, Andrew Buchanan
P1390918
(12+7)
#2
1. Lg2! droht 2. Th1#
1. 0-0-0? illegal
play all play one stop play next play all
Henrik Juel: The retroplay is R: 1... Kh1xLh2 2.Lg1xDTSh2+, not 2.Lg1-h2+?? leaving Black no previous move
The uncaptured bishop is [Ph2] promoted on b8 or d8 after six additional white captures, so [Pa7] must have promoted
White has only D and S left to be captured, so the black promotion was on a1, not b1, and White may not castle, because Ta1 has moved
Solution 1.Lg2 thr. 2.Th1#, not the illegal 1.0-0-0??
A delightful birthday greeting (2021-06-19)
Henrik Juel: I am trying to estimate your age, Andrew
You published your first problem in 'Mathematics at DEC' in 1991, at which time you could be around 30 years old; so your current age might be 60
In any case, happy birthday from me also, and thanks for your contributions to PDB (2021-06-19)
A.Buchanan: Thank you, Henrik, but I'm just one of the noisiest of the many servants of PDB. In Lion's problem, I particularly like the Home Circuit. He asks if there is a name for the theme where a promoted pawn is captured after homecoming? On other matters, see P1299465 :) (2021-06-19)
Henrik Juel: I think that we should just let that theme remain unnamed (here, [Ph2] promotes and returns to h2 as a bishop, which is captured) (2021-06-19)
A.Buchanan: I ask more to try to make a general pattern. There are plenty of keywords which indicate when something gets somewhere. Maybe the dramatic qualifier "fatal" can indicate the fate awaiting the piece when it gets there? So "fatal homecoming", "fatal pronkin", "fatal Donati" etc? :) (2021-06-19)
Walter Lindenthal: The solution is clear-cut. But the sequence of moves that leads to the final diagram position is characteristically influenced by the kind of b promotion. a1=bQ/bS allows a rather FREE selection of moves and finally bQ/bS/bR could occupy h2 for the R-final capture wBg1x?h2, bKh1xBh2. In contrast, a1=bR directs the sequence of moves rather tightly, and ONLY the promoted bR can occupy h2 for the R-final capture (analytic details see Facebook). (2021-06-21)
more ...
comment
Keywords: Cant Castler, Home Circuit, Volet Pawn (extended), Ceriani-Frolkin Theme (L), Prentos Theme (L)
Genre: 2#, Retro
FEN: 8/1p1ppppp/8/8/5N2/P5PB/1PPPPP1k/R3KR2
Input: A.Buchanan, 2021-06-18
Last update: A.Buchanan, 2021-06-19 more...
Show statistic for complete result. Show search result faster by using ids.

https://pdb.dieschwalbe.de/search.jsp?expression=COMMENTDATE%3E%3D20200919+AND+NOT+K%3D%27Hilfsr%C3%BCckz%C3%BCger%27+AND+G%3D%27Retro%27+AND+K%3D%27Home+Circuit%27

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

A.Buchanan (2)