Exchange sacs.

Kevin O'Rourke · Post by **Kevin O'Rourke** » Wed Mar 29, 2017 3:34 pm

Exchange sacs.
Which is more common? Rook for Bishop or Knight? If they are considered equal then which do you find yourself doing more often of which comes up as a possibilty more frequently?

LawrenceCooper · Post by **LawrenceCooper** » Wed Mar 29, 2017 3:40 pm

Kevin O'Rourke wrote:Exchange sacs.
Which is more common? Rook for Bishop or Rook? If they are considered equal then which do you find yourself doing more often of which comes up as a possibilty more frequently?

Do you mean bishop or knight?

Kevin O'Rourke · Post by **Kevin O'Rourke** » Wed Mar 29, 2017 3:50 pm

Roger de Coverly · Post by **Roger de Coverly** » Wed Mar 29, 2017 3:59 pm

Kevin O'Rourke wrote: Which is more common? Rook for Bishop or Knight?

In the opening, the Knight perhaps, given that .. Rxc3 is a normal move in the Dragon. There's a line in the Exchange Gruenfeld where White goes d5, allowing Bxa1, but I don't think that's very common these days.

Nick Burrows · Post by **Nick Burrows** » Wed Mar 29, 2017 7:44 pm

Speaking of which, I just played through this famous game - wonderful!

Troianescu - Petrosian, Bucharest 1953

Nick Grey · Post by **Nick Grey** » Wed Mar 29, 2017 11:49 pm

Sicilian exchanges, or Pirc exchanges RxNc3 (good) and also Pirc exchanges where white offers Ra1 for Bg7 (bad for black).

I've been examining positions with RxB or N on e6/e3 for a change. Am working through Improving Your Chess Pattern Recognition this year.

There are lines in c3 Sicilian for White with one or two exchanges of R for B to get a queenside pawn to queen.

I also had a game some time ago with black in some strange queen pawn opening with two RxN sacrifices which were winning due to blocked nature of pawn structure. Will try to find that game in my boxes of scoresheets.

Thanks Nick for this game - it's been a pleasure to play through this evening.

Roger de Coverly · Post by **Roger de Coverly** » Thu Mar 30, 2017 12:19 am

Nick Grey wrote: I've been examining positions with RxB or N on e6/e3 for a change. Am working through Improving Your Chess Pattern Recognition this year.

It's surprising infrequent that you get the chance to play a passive exchange sacrifice in the style of Petrosian.

Here's one that I've had in recent years.

I cannot claim it's original, since we had transposed to a Barden game from the 1962 Olympiad. It's in his 1960s book on the Ruy Lopez, a book I had read a long time ago. I didn't directly recall that game, but it just looked right.

Geoff Chandler · Post by **Geoff Chandler** » Thu Mar 30, 2017 2:29 am

The most common I'd say is Rook for Knight with the Knight being able to take
up an outpost. The two Rooks player should be thinking right away of saccing the
exchange back before the Knight gets settled and all kinds of ideas appear on the board.

A Rook for a Bishop. I think we would all consider swapping a Rook for a castled fianchettoed Bishop,
especially if we still had the Bishop of the same colour left after the swap.
(letting the a1 Rook go for a g7 Bishop when we still have the QB)

Hi Roger,

Nakamura must have read your post today and supplied an example
of a Rook for Bishop swap in the ending at the US Championship.

This one was an opposite coloured Bishop ending. Nakamura tossed the Rook
for a the Bishop and the Bishop then make a fool of the Rook.
(none of the promoting squares were controlled by the Bishop.)

Ray Robson - Nakamura 2017 USA Championship 2017 (round 1)

And speaking of Rooks and Bishops. This is the final position between
Carlsen and Svidler at the 2010 World Blitz Championship.

White has just played 99.Rg1 Black resigned.

Today's challenge, using just the pieces in the above
diagram set up a position with both Kings in checkmate.

(just a piece of fun)

English Chess Forum

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