[Retros] non-FEN fun

Joost de Heer joost at sanguis.xs4all.nl
Tue Aug 20 02:35:44 EDT 2013

On Mon, August 19, 2013 19:10, Noam Elkies wrote:

> As it happens Chessbase.com just ran this article


> http://www.chessbase.com/Home/TabId/211/PostId/4010825/the-infamous-1999-chessbase-christmas-puzzle-160813.aspx


> on its first "Christmas puzzle" ever, which asked in 1999 for

> a legal came starting 1 e4 and ending 5...NxR#.

Quick question: Does 'White played 2. Qe2, and the game ends with
5...NxR#' result in a unique proofgame? Solution may be a little bit more
easy than the original one however.


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