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Is this generally a win or a draw? What drawing or winning techniques are there?
I think it's a draw. Technique: don't blunder.
I mean a win for the three minors or not, in case you thought a win for the rook.
It is quite obvious the rook will not win (unless there are a lot of blunders).
BTW when I said it's a draw, that is a very rough guess. I think if the three minors can force a win, it could easily take dozens of moves. The 50-move rule would be of utmost importance.
Endgame tablebases seem to say that surprisingly, two bishops and a knight can usually win against a rook, but two knights and a bishop usually only draw. This makes some sort of sense: if the rook is swapped off for a bishop, we want to be left with B+N which wins and not N+N which only draws.
As for techinque, I have no idea- scrolling through a random tablebase win, it looks like White plays for a standard two-bishop checkmate, while mainly using the knight to block checks from the rook. I wouldn't bet money on being able to win this endgame over the board, though.
Wow; I was using the analysis board to see what I think, but I was doing it with two knights and a bishop. I reverse my previous guess.
Two knights and a bishop almost always draw, but two bishops and a knight can win, since there the rook cannot simply sacrifice itself for a bishop.
This endgame actually occurred in one of the Karpov-Kasparov games (from a tournament).
what was position?
the aforementioned karpov-kasparov game. 2 knights+1 bishop vs rook
Losing easily against 2B+N, drawn against 2N+B- although the defence is far from easy.
5/22/2013 - Good Night to the Enemy
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