Author: Steve Coladonato
Date: 11:45:19 04/22/99
Go up one level in this thread
On April 22, 1999 at 14:26:24, Jeremiah Penery wrote: >On April 22, 1999 at 13:05:04, Steve Coladonato wrote: > >>At one time, there was a rule in chess that in the case of a known forced mate a >>player was allowed the standard 50 move rule or twice the number of moves with >>best play to execute the mate. The KNB vs K ending is a 34 move ending with >>best play. Therefore a player was allowed 68 moves to effect the mate. Does >>anyone know if this rule is still in effect? > >Can you post a position for this? The longest ending of this type that I've >seen is something right around 50 moves. (The losing king is in the wrong >corner) The 34 moves was from any position on the board. I'm sure that there are many positions which do not require the full 34 moves and a few which would. Which positions would require the 34 moves, I don't know. I haven't seen any documentation on this in recent books but back in the 70's there was quite a bit available. Unfortunately, I don't have any of those old books around. I think the basic mates were as follows: KQ v K - 9 moves KR v K - 12 moves KBB v K - 20 moves KNB v K - 34 moves Again, from any position on the board, mate could be accomplished within the number of moves above with best play.
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.