Author: Ricardo Gibert
Date: 10:36:52 03/19/03
Go up one level in this thread
On March 19, 2003 at 13:23:17, Ricardo Gibert wrote: >On March 19, 2003 at 12:09:01, Bas Hamstra wrote: > >>What is the official rule: as far as I know whenever the same position has >>actually occurred three times on the board, you can claim a draw. Is it required >>that the color to move is also the same? >> >>Best regards, >>Bas. > > >There are 2 distinct cases that need to be differentiated: >(1) Your *opponent* was the one that made the moves that repeated the position. >(2) *You* were the one that made the moves that repeated the position. > >Note that there many very experienced players that are unaware there are these 2 >distinct cases including some tournament directors I've encountered. > >IMPORTANT: In both cases, the only time you can make a draw claim is when it is >*your* turn to move. > >In case (1), your draw claim is valid only if the position has "properly" >repeated at least three times *and* the position *on the board* is one of them. > >In case (2), your draw claim is valid only if the position has "properly" (see >below for an explanation) repeated at least two times *and* you can indicate a >legal move, but do *not* play the move that would represent a third repetition. >If you play the move, even though the position has thereby been repeated three >or more times, your claim is invalid, because it is not *your* turn to move. >Your opponent however can make a claim (his option to do so), but in accordance >with case (1) rather than case (2). I should add that you need to actually write down the move on your score *and* indicate that this move is the one you intend to play. A very confusing situation can tranpire where you neglect to write the move down and an opponent that understands this technicality will respond to your claim of a draw with denial of it's validity without explaining. You next bring the director and repeat your claim. Again he too will deny the validity of your claim without explaining and you might wonder if they've lost their minds. Technicalities matter. > >Note that a situation can occur such that a valid claim on your turn to move can >be valid in accordance with *either* cases (1) or (2). They are not necessarily >mutually exclusive possibilities. To be clear, it can happen on your move that: >- Neither case is valid. >- Only case (1) is valid. >- Only case (2) is valid. >- Either case (1) or case (2) is valid. >In a tournament, it can happen that you will get a director rules against your >draw claim in accordance with one of the cases and the other case is overlooked. >Even directors get confused. It is important to understand the 2 distinct cases >to avoid getting screwed. > >A position is "properly" repeated when the following three conditions are >fulfilled: >(1) The turn to move is the same in each repeated position. >(2) The potential abilty to castle K-side and Q-side is the same in each >repeated position for *both* players. >(3) The legal moves available in each of the repeated positions is the same. In >this regard, it should not be overlooked that the availability of en passant can >adversely affect a claim.
This page took 0 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.