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John,
I like to think that I am relatively good at endgames, in particular rook and pawn endgames. But, uh...I haven't heard of that particular position. Maybe it's just that I haven't heard it by that name. If it's the K+R+f+h vs. R+K as someone else mentioned, then yes I've studied it, I know how I'm *supposed* to draw it, but if I remember right, it isn't quite as straight-forward as some authors would have you believe. For example, in a Euwe endgame book (that nobody seems to care for but I hold in high regard because it was how I learned rook endings), he has the position reduced to a set of rules essentially (if attacking king goes here then defending rook checks here, etc.), but when I tried it out agaist fritz, it wasn't so easy (Fritz doesn't play by those rules!).
As far as the Cox-Aagaard position goes, I guess black has some advantage due to a more active rook? And so your idea roughly was sac a pawn for rook activity (and it turns out that black's rook becomes less active in the process), i.e. 1. Rc2 Rxa4 2. Rc7 and now either 2. ...Rb4 3. Ra7 a4, when the black rook is awkwardly tied to the defense of the pawn, or 2. ...Ra3+ 3. Kf2 a4 4. Ra7 a3, when I think the white king can take cover on g3 and black will be unable to queen the pawn. Seems like a good strategy, because having an active rook is considered very important in rook endings, and your rook on a2 is looking pretty bad.
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Vancura position (Read 32246 times)
