CHESS PUZZLE, FEN Q1r1r3/3R3B/2b5/Bpp1pP2/2k5/R5p1/P7/1n4K1 w - e6

Added by:blitzkov
Added on:03-Nov-12
Description:
Difficulty:
chess puzzle Q1r1r3/3R3B/2b5/Bpp1pP2/2k5/R5p1/P7/1n4K1 w - e6
Attempts:27
Solved:12 (44%)
White to move, mate in 2
Comments: (5) » LastGo to last comment
From Comment
fredkohn
03-Nov-12, 19:19

» Report abuse
Doesn't this problem violate current retrograde convention? Surely it is not possible to prove what Black's last move must have been.
hdgpille
03-Nov-12, 19:36

» Report abuse
nice puzzle
blitzkov
03-Nov-12, 20:55

» Report abuse
fkohn,
I don't think so. En-passent is legal in composition.
fredkohn
04-Nov-12, 05:28

» Report abuse
It has to be demostrated that Black's move had to have been e7-e5 for this to pass muster by current convention.
fredkohn
04-Nov-12, 05:37

» Report abuse
from http://www.janko.at/Retros/Glossary/EnPassant.htm
"The default convention is that, in a given position, if you can't deduce whether a potential en passant is legal or not, then it is not permitted. I.e., if uncertainly exists, you may assume that the last move was not the relevant double pawn move."
Account required
Please log in to post comments.