Originally posted by Dragon Firehttp://www.shredderchess.com/online-chess/online-databases/endgame-database.html 😛
White to move.
Who is better?
[fen]r3k2r/8/8/8/8/8/8/3QK3[/fen]
Of the 21 possible moves, 9 draw and 12 win for black.
After 1. Qd6 black has 20 possible moves of which 6 draw and 14 lose. The quickest loss is 1. ... Rd8 which loses in 33 moves. 1. ... Rd8 might actually look an obvious move to many players with black but could you (as white win it). Of the 29 possible white moves now only 1 wins and 28 draw. What is it?
QUEEN FOR TWO ROOKS
How about queen for two rooks? Although many authors talk about queen and pawn equaling two rooks, this is only close to true with no minor pieces on the board; with two or more minors each, the queen needs no pawns to equal the rooks. I recall a famous Portisch-Fischer game in which Portisch "won" two rooks for Fischer's queen right out of the opening, but Fischer soon won a weak pawn and went on to win rather easily, despite the nominal point equality. In fact Fischer's annotations severely criticized Portisch for making the trade; Fischer understood very well that with lots of material on the board, the queen is every bit as good as the rooks, so once he won a pawn he was effectively a full pawn ahead.
http://home.comcast.net/~danheisman/Articles/evaluation_of_material_imbalance.htm
Originally posted by EladarI'd be interested to know how it goes. I realize now sacrificing a Queen for two Rooks is technically a wise move, but it's never worked for me.
I am playing a game right now where I sacrificed a queen for two rooks because I believed it helped my position. Of course we'll have to wait to see how the game ends before I can claim that it was a good idea or not.
I generally would sac the queen for the two rooks if my opponent doesn't have any knights. The reason for this is tha knights and queens work remarkably well together on an open board whereas a bishop doesn't add any useful function to what a queen can already do. That is only generally though.
Originally posted by tomtom232Good points.
I generally would sac the queen for the two rooks if my opponent doesn't have any knights. The reason for this is tha knights and queens work remarkably well together on an open board whereas a bishop doesn't add any useful function to what a queen can already do. That is only generally though.