How to play queen vs 2 minor pieces endings?

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sta202020

Black to move

In this position,White is going to take b7 pawn no matter what Black move. It soon turn out to be  in the following position: Queen vs Knight + bishop+ pawn

According to the engine,it will be a draw.

Here I have 2 questions:

1. What's the key points of playing this  kind of endgame?

2. When the players are humankind(not engine), is it easier for one side (such as Queen side) to play? That is to say ,one side is easier to draw and have some oppotunity to win?

llama36

There is a N+B fortress vs the queen, so first thing black should think about is winning the d4 pawn. For example Nf5 and Bg7 is an idea.

sta202020
nMsALpg 写道:

There is a N+B fortress vs the queen, so first thing black should think about is winning the d4 pawn. For example Nf5 and Bg7 is an idea.

Thank you

Arisktotle

This particular endgame is a win for the queen side but you can't expect that verdict from an engine designed to analyze games like StockFish. As the board material quickly reduces to 7 units the position comes within reach of the dedicated endgame tablebase programs which are capable of evaluating it with 100% certainty.

A disadvantage of the tablebase outcomes is that it is often impossible to translate the winning lines into human strategies - instructions we can write down in an efficient manner, we can learn and we can apply without error. That happens especially with long solutions like this one taking over 100 moves. Also you will have to deal with the 50-moves rule which muddies the waters for the winning navigation routes.

Btw, most grandmasters will try for a win in game positions with this material on the logic that while they don't know how to win, their opponents won't know how to draw either. Which occasionally turns out the "wrong" result in actual game play. In effect the GMs are as much in the dark as you are and it is therefore good advice for players on any rating level!

sta202020
Arisktotle 写道:

This particular endgame is a win for the queen side but you can't expect that verdict from an engine designed to analyze games like StockFish. As the board material quickly reduces to 7 units the position comes within reach of the dedicated endgame tablebase programs which are capable of evaluating it with 100% certainty.

A disadvantage of the tablebase outcomes is that it is often impossible to translate the winning lines into human strategies - instructions we can write down in an efficient manner, we can learn and we can apply without error. That happens especially with long solutions like this one taking over 100 moves. Also you will have to deal with the 50-moves rule which muddies the waters for the winning navigation routes.

Btw, most grandmasters will try for a win in game positions with this material on the logic that while they don't know how to win, their opponents won't know how to draw either. Which occasionally turns out the "wrong" result in actual game play. In effect the GMs are as much in the dark as you are and it is therefore good advice for players on any rating level!

thank you!

tygxc

A draw in theory =/ a draw in practice
https://www.chessgames.com/perl/chessgame?gid=2127373 

sta202020
tygxc 写道:

A draw in theory =/ a draw in practice
https://www.chessgames.com/perl/chessgame?gid=2127373 

It's a good exmple on how to play in an imbalanced position

Here I have a question, in round 35, Black  has the oppotunity to take the b4 pawn, but he doesn't take it. Did the player ever tell the reason?

OlejanXL

wow

MagnosCarlyson

Q can generally win against N+B with no pawns unless there is a tactical exception