This puzzle will make you either laugh at the solution, or make you argue with me about it :P If nobody gets the answer in 8 posts (by different people, NO SPAM) I'll give you a hint, but it will seem obvious after I do.
Well, I'd say heinzie really got it, I just put the move down. If you've got an open mind, a phrase like "mate in one" has a few different meanings. Don't feel too bad about it.
EDIT: Serbian, in case you didn't read the post, the OP said "mate in one", not "a winning line".
White and Black are mates ei friends. They are playing a friendly game. In the position on diagram white is not forcing a win with 1.Kc5 or 1.Kc7, but shows he a mate and is satisfied with a draw after 1.c7!
This puzzle will make you either laugh at the solution, or make you argue with me about it :P If nobody gets the answer in 8 posts (by different people, NO SPAM) I'll give you a hint, but it will seem obvious after I do.
White to mate in one.