I dont believe so. . .remember that the 50 move rule is an automatic draw with no checks within 50 moves. . .so technically a forced mate could be longer as long as there were checks involved.
A mate that is both possible and unpossible
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Yeah, it's fun to look for them in Nalimov. There are Q vs Q+p endings where the pawn cannot move for longer than 50 moves, but the position is won.
Yes. According to Wikipedia, FIDE has changed the 50 move rule to allow for certain engames that require more than 50 moves to force a checkmate but apparently has since changed it back.
http://en.wikipedia.org/wiki/Tablebases
Imagination7, that is not the 50 move rule....
Summum_Malum wrote:
Hehe.. "Me fail English!? That's unpossible!" Quote Homer Simpson..
Actually, that's Ralph Wiggum
Feb 9, 2011
0
#10
imaginati0n7 wrote:
I dont believe so. . .remember that the 50 move rule is an automatic draw with no checks within 50 moves. . .so technically a forced mate could be longer as long as there were checks involved.
First, it isn't automatic. The draw still has to be claimed. Second, it is 50 moves without a capture or pawn move. Any time a pawn moves or a piece/pawn is captured, the count is reset.
Feb 9, 2011
0
#11
DarkAngelCryo wrote:
Summum_Malum wrote:
Hehe.. "Me fail English!? That's unpossible!" Quote Homer Simpson..
Actually, that's Ralph Wiggum
+1
I don't think that the 50-move rule resets after a check, I believe after a pawn move or capture.
Feb 12, 2011
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#12
It's really after 50 moves that cannot be unmade. Moves that cannot be unmade are pawn moves, captures, castling.
Feb 12, 2011
0
#13
salimb wrote:
It's really after 50 moves that cannot be unmade. Moves that cannot be unmade are pawn moves, captures, castling.
That is incorrect. Castling does not reset the 50 moves as that is neither a pawn move or capture. The only requirement is 50 moves without a capture or pawn move.
Three-fold repetition is impacted by pawn moves, captures and castling since it requires that all potential moves are still possible (right to castle, right to capture en passant)
I have a question,
Is there a set up of pieces in which a mate can be forced, but it takes 51 moves to force it which would make it a draw because of the 50 move rule.
I recently had a position with a queen + king vs knight + king. And an engine took 30 moves in it analysis to force a position in which the knight side has to give up his knight or gets checkmated. But are there positions that take even longer?
P.S. I am aware of the incredibly big spelling error in the title.