mate in 517!
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madhatter5
Jan 3, 2011
0
#1
Black moves first
well, I will have a look at this one, when I have two weeks off...
easy
im confused. which side are we playing?
[COMMENT DELETED]
that draw offer move is bunk. That rule wasn't made with long endgames in mind
A draw offer is not required. So mate in 517 is possible.
Jan 4, 2011
0
#9
but if there is a piece capture, you would have to start counting again.
I got it from this website. To be honest, I'm not even sure who moves first!
Well, to be sure, you would have to know who moves first. 
It doesn't even matter if a piece is captured or not. The 50 move rule does not require either player to request a draw. It's an option. Both players are free to ignore the 50 move rule if they want. Therefore there is no limit to the length of a possible checkmate (even though in reality neither player would see the checkmate here, and might eventually agree to a draw).
Jan 4, 2011
0
#12
oops, I meant that I'm not sure who mates whom. sorry for the confusion.
redbirdpat wrote:
It doesn't even matter if a piece is captured or not. The 50 move rule does not require either player to request a draw. It's an option. Both players are free to ignore the 50 move rule if they want. Therefore there is no limit to the length of a possible checkmate (even though in reality neither player would see the checkmate here, and might eventually agree to a draw).
If the checkmate became apparent to the would-be loser, in, say, 508 moves or so, then he might claim the draw, so one could consider it important that a capture be made after move 467. Or one could accept that the loser, amazed by the skill of his opponent, is humbled and willingly gives his half-point to the far-seeing champion.
ivandh wrote:
redbirdpat wrote:
It doesn't even matter if a piece is captured or not. The 50 move rule does not require either player to request a draw. It's an option. Both players are free to ignore the 50 move rule if they want. Therefore there is no limit to the length of a possible checkmate (even though in reality neither player would see the checkmate here, and might eventually agree to a draw).
If the checkmate became apparent to the would-be loser, in, say, 508 moves or so, then he might claim the draw, so one could consider it important that a capture be made after move 467. Or one could accept that the loser, amazed by the skill of his opponent, is humbled and willingly gives his half-point to the far-seeing champion.
That's true. But my point is that a draw isn't required (even though in your example, the draw probably would be claimed to avoid a loss). My point goes to those who claim that a 517 move mate is impossible because of the 50 move rule. It's not impossible. Because a draw claim is optional, regardless of how unlikely it might be. That's really my only point.