3 problem(s) found in 1454 milliseconds (displaying 3 problem(s)).

1 - P0003940
Jean Luc Seret
Jean-Michel Trillon

diagrammes 51 05-06/1981
4. Lob
P0003940
(3+4)
#2 (RV)
Pièces rétro-volages
a) 1. Le3+ Lc5 2. Lxc5
b) 1. Lxa3 b6 2. Da4
play all play one stop play next play all
TT
null: Two retro-variants.
(a) Ba8 appeared by wPa7-a8=bB and Pb7 is volage (original).
Thus, 1.Bxa3? is a stalemate: b7-b6=wP?? would be an illegal
autocheck!
(b) Ba8 came via b7 and, thus, Pb7 is orthodox (recolored
from a wP). (2008-6-17)
comment
Keywords: Retro-volages, Partial Retro Analysis (PRA)
Genre: Retro
Input: Gerd Wilts, 1995-6-3
2 - P1011614
Jean Luc Seret
Jean-Michel Trillon

2613 Europe Echecs 07/1978
P1011614
(12+6)
R#9
Set 1...Lg8 2.Se7 Lh7 3.Sxg6 Lxg6# 1.a3 ... 6.a8=T Lh7 7.T8a2 Lg8 8.Se7 Lh7 9.Sxg6. Not 2.Sd6? Lh7 3.Sxf7 Lg8 4.Ka2+ Kc2 5.Sxe3#
play all play one stop play next play all
Compare 2808 by same composers. Excelsior by WPa2 to lose a move
Keyword=Excelsior
Keyword=Tempo Play
comment

Genre: r#
Input: Paul Valois, 2001-8-15
Last update: Paul Valois, 2001-9-25 more...
3 - P1011615
Jean Luc Seret
Jean-Michel Trillon

2808 Europe Echecs 04/1980
P1011615
(9+8)
R#9
1.a4? Lg6! Key 1.a3 ... 6.a8=T Lh7 7.T8a2 Lg8 8.Lxf5 Lh7 9.Se2
play all play one stop play next play all
Excelsior to save a tempo. Same composers' 2613 (EE, 1978) is preferable
Keyword=Excelsior
Keyword=Tempo Play
comment

Genre: r#
Input: Paul Valois, 2001-8-15
Last update: Paul Valois, 2001-8-15 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (1)
Paul Valois (2)