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Subject: Re: How many possible moves in one position?

Author: Jay Scott

Date: 11:45:06 12/08/97

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On December 07, 1997 at 22:20:22, Don Dailey wrote:
>If each piece had maximum mobility and no multiple pieces were allowed
>unless they existed from the opening position:
>
>27  queen
> 8  knight
> 8  knight
>13  bishop
>13  bishop
>14  rook
>14  rook
> 8  king
>---------
>105 moves.
>
>The pawns could add moves but it's hard to believe they
>would not interfere with the range of other pieces.  Also it's hard
>to believe the pieces themselves would not interfere with each other.
>
>I believe it will be truly difficult if not impossible to find a
>position
>with 100 legal moves possible assuming only up to 1 queen and 2 of
>everything
>else.

Do the pawns add more than you thought? A pawn on the
seventh rank with two possible captures can promote on any
of three possible squares, to any of Q R B N,  making twelve
moves. The position may become "constructed" after the
promotion. :-)

  Jay



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