Author: Gerd Isenberg
Date: 16:30:59 11/30/03
Go up one level in this thread
On November 30, 2003 at 18:38:24, Uri Blass wrote:
>On November 30, 2003 at 17:20:14, Gerd Isenberg wrote:
>
>>On November 30, 2003 at 16:37:17, Dieter Buerssner wrote:
>>
>>>On November 30, 2003 at 13:57:19, Robert Hyatt wrote:
>>>
>>>>On November 30, 2003 at 13:22:20, Dieter Buerssner wrote:
>>>>>Note, we first see the move, and then the info: "game drawn", which can easily
>>>>>be interpreted as not correct.
>>>>
>>>>No it can't. Because to play a game of chess, you are required to _move_ the
>>>>pieces, and _press_ the clock. That is why humans have "blind rules" for a
>>>>player that can't see. And the rules explain this very clearly. If the
>>>>draw is a repetition before the move is played,
>>>
>>>I am not sure, you read my post carefully. Neither do I find any indication in
>>>the FIDE chess rules, that would support your point. I looked at:
>>>http://www.fide.com/official/handbook.asp?level=EE101
>>>
>>>There I find:
>>>---
>>>9.2 The game is drawn, upon a correct claim by the player having the move, when
>>>the same position, for at least the third time (not necessarily by sequential
>>>repetition of moves)
>>>
>>>a) is about to appear, if he first writes his move on his scoresheet and
>>>declares to the arbiter his intention to make this move, or
>>>
>>>b) has just appeared, and the player claiming the draw has the move.
>>
>>
>>Hi Dieter,
>>
>>Isn't b) redundant?
>>
>>I mean if you have already a 3-fold repetition where your opponont didn't claim
>>a draw before, doesn't that imply that you can force another 3-fold repetition?
>
>No
>
>Here is a game that I played on force mode under winboard when my engine was
>watching
>
>[Event "Edited game"]
>[Site "F3K9V7"]
>[Date "2003.12.01"]
>[Round "-"]
>[White "-"]
>[Black "-"]
>[Result "1/2-1/2"]
>
>1. Nf3 Nf6 2. Ng1 Ng8 3. Nh3 Nh6 4. Ng1 Ng8
>{Movei-> Draw by repetition} 1/2-1/2
>
>
>White cannot force another 3-fold repetition in the next move and movei declares
>draw by repetition only 4 plies later when I continue the game in force mode.
>
>[Event "Edited game"]
>[Site "F3K9V7"]
>[Date "2003.12.01"]
>[Round "-"]
>[White "-"]
>[Black "-"]
>[Result "1/2-1/2"]
>
>1. Nf3 Nf6 2. Ng1 Ng8 3. Nh3 Nh6 4. Ng1 Ng8 5. Nf3 Nf6 6. Ng1 Ng8
>{Movei-> Draw by repetition} 1/2-1/2
>
>
>Uri
I really was not aware of that rule b).
What does it imply for computer chess?
If a program (e.g. Shredder) must declare a draw due to rule b),
rule a) makes no sense at all.
Only considering rule a) for claiming draws may miss immediate draw claims b),
where i wrongly thought it is redundant.
Gerd
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