How many pieces and pawns is a Queen worth?

[perseus]

How many pieces and pawns is a Queen worth?

www.stansco.com/cgi-bin/nc_game.cgi?356520?10b??large

No hints as the game is not finished.

General comments and other examples please.

What is the psychological impact of losing your Queen?

I have seen games OTB where a Queen sacrificed for two Rooks was the edge that won the game! And early one for me when returning to chess after a 20 year break a pawn, bishop and rook was not good enough compensation, not when the opponents rooks were working together.

[Gritty]

Depends on the situation a bit. I've happily sacrificed a Q for 2 R's when 2 points behind, simply because the extra pressure I could exert with my 2 Rooks gave me a reasonable chance of forcing home one of my passed pawns.

www.stansco.com/cgi-bin/nc_game.cgi?315135?28b??large

[savin]

Three minor pieces is OK compensation for a Queen. 2 Bishops and a Knight for a Queen is a little better than 2 Knights and a Bishop for a Queen. The real challenge, especially with lower rated players, is that a queen is a lot easy to move that 3 minor pieces. Because of this I might say that a Queen will tend to beat 3 minor pieces on a complex board if the players are rated under 1600 (new rating system).

For instance, with two bishops and a knight one of the bishops is always not protected, except by the King. So a queen and King versus 2 x bishops, knight and King might lead to a victory for the Queen. The worse case is a draw for players rated under 1600. Why? Well the Queen takes a Bishop and ... how many players rated under 1600 can mate with knight bishop king against king? (without a computer to help!!)

[perseus]

How many pieces and pawns is a Queen worth?

www.stansco.com/cgi-bin/nc_game.cgi?356520?10b??large

Game is now finished. My opponent bottled it and moved his Queen out of the way. It probably lost him the game.

This was unlikely to be sound play over the Board? Probably sound pyschologically for the particular opponent.