Author: Robert Hyatt
Date: 11:57:49 03/08/00
Go up one level in this thread
On March 08, 2000 at 12:50:31, Brian Richardson wrote: >Tinker ran into the following against Redbear the other day: > >[D]8/3b1P2/8/4n3/3k1KP1/8/8/8 w - - > >Tinker moved f8 "thinking" f8=N to avoid the fork ng6, but "forgot" to >specifically mention the promotion piece, so the move f8=Q was made (in Winboard >and by ICS). This created errors and Tinker lost the game. This is the first >time in close to 1,500 games on ICS that an underpromotion has come up. > >Just thought I would post it so others can check their programs too... This happened to crafty in an ending vs a GM a couple of years ago. There was some sort of server change where suddenly the 'case' of the promotion piece was important... I had the wrong case and in a similar mating position, crafty played=N, the opponent saw =Q and basically crafty lost on time in a dead lost position, because=N won, =Q let the opponent get in a critical check and mate crafty. The mate didn't happen because crafty would not accept anything but a K move by the opponent since it thought the knight check had to be honored. I have seen several =N endings... I have watched at least 1/2 dozen games where that made a difference... out of a bunch, of course. :)
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