[math-fun] Maximum number of queens simultaneously on a chessboard from a legal game
In a casual conversation last night, some friends and I were wondering what is the maximum number of queens that can on the board simultaneously in a legal chessgame. (Assuming of course that both players are cooperating to achieve this result.) There is an obvious upper bound of 18. Is this achievable? --Dan ________________________________________________________________________________________ It goes without saying that .
sure, why not? you only need one capture for each pair of opposing pawns to miss each other and promote, and there are 12 minor pieces and only 8 pairs of pawns. erich On Jun 3, 2012, at 7:55 PM, Dan Asimov wrote:
In a casual conversation last night, some friends and I were wondering what is the maximum number of queens that can on the board simultaneously in a legal chessgame. (Assuming of course that both players are cooperating to achieve this result.)
There is an obvious upper bound of 18. Is this achievable?
--Dan
________________________________________________________________________________________ It goes without saying that .
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Dan Asimov:
There is an obvious upper bound of 18. Is this achievable?
Yes. A better question might be what is the minimum number of moves in which it is achievable. I see it done in 58 moves here: http://www.chess.com/forum/view/off-topic/18-queens?page=2
A better question might be what is the minimum number of moves in which it is achievable.
participants (3)
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Dan Asimov -
Erich Friedman -
Hans Havermann