From: Tonek Jansen CHEM TUE NL> Date: 13 nov 1995 Subject: Re: stale mate > Hiroki Kawada wrote: > > I would like ask chess players if there is similar ambiguity in the rule > book of chess. I have the following from the book "Schaakcuriosa" ("Chess Curiosities") by Tim Krabb'e. It may not refer to an ambiguity in the rules of chess, but it is surprising that castling very long is possible. Actually, I'm not comletely sure that it's allowed. It may depends on the precise phrasing of the rules. Suppose a white pawn promotes to rook on e8. As that rook has not moved it seems allowed to castle with it; king moves from e1 to e3, and rook from e8 to e2 (notation 0-0-0-0). If I remember correctly, Tim Krabb'e presents a mating problem in which e7-e8R is the key and 0-0-0-0 is the mating move in some variations. Tonek tgtatj chem tue nl