Author: George Tsavdaris
Date: 16:30:27 07/25/03
Go up one level in this thread
On July 25, 2003 at 19:00:37, John Merlino wrote: >On July 25, 2003 at 18:53:38, Dave Gomboc wrote: > >>On July 25, 2003 at 18:14:25, Ed Schröder wrote: >> >>>On July 25, 2003 at 17:50:21, Ernst Walet wrote: >>> >>>>This afternoon my account on the chessbase server played a game against Rebel >>>>12. To my astonishment Rebel missed a mate in one, and got mated right away. >>>>Any thoughts on this, Ed? >>> >>>Yes, I have. >>> >>>Rebel claims a draw (50 moves rule) after 151.Bd3 which is ignored by the >>>interface. >>> >>>Since blacks last pawn move is at move 101 is black allowed to make its 151th >>>move? It's no capture, neither a pawn move. >>> >>>If so I have a bug in Rebel of over 20 years :) >>> >>>101. Bc2 d4 >>>102. Bd3 Kg7 >>> >>>151. Bd3 Qg1# >>> >>>So what's the verdict? >>> >>>Ed >> >>Bug! >> >>You can only make draw claims when it is your turn. White cannot make a valid >>draw claim based on the fifty-move rule after playing 151. Bd3. After Black >>plays 151...Qg1# the game ends immediately due to checkmate. White never gets >>another turn, so he has no chance to claim that the position is drawn by the >>fifty-move rule. >> >>Dave > >Agreed. And would you believe that we had a similar bug to this in Chessmaster >for many years? :-) > There is no bug in Chessmaster9000 GUI. After the move Qg1 Chessmaster announces checkmate for black. But The King has the problem, as before Qg1 has a score of 0.00 in it's best move, although it's best move is Qg1# mate! Intead all 3 Rebel 12,Rebel Century 4/3 even Rebel Decade 1.2 announce a draw due to 50 move rule.
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