[Retros] How many times could a Diagram be repeated during aproofgame?

Joost de Heer joost at sanguis.xs4all.nl
Tue Jun 5 05:49:13 EDT 2007

On Tue, 5 Jun 2007, Olli Heimo wrote:

> Rol, Guus kirjoitti 04.06.2007 kello 19:38:


>> (d) the drawn position can still be part of the proof game


> I think that it can't. The third repetition of the position is

> a virtual position, which occurs on the protocol. Assuming

> that White's last move was 45.Bf4 repeating the position for

> third time it is illegal. He should write that move on the protocol

> and claim for draw, but not make the move on the board.

The draw can also be made by a party claiming that the current position
has occurred for the third time, so the move leading to the third
repetition is legal, even if the draw is forced.

5.2d: The game may be drawn if any identical position is about to appear
or has appeared on the chessboard at least three times. (See Article 9.2)

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 a
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.


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