24 Feb 09
1 edit
Originally posted by !~TONY~!I am looking at 1. g4 too, mainly to stop Black from playing 1. ... Kf7 to cover the Rook and indeed play d3. Now g4 looks pretty powerful as 1. ... fxg4 2. Qxg4 Kf7 3. f5 is looking mighty good.
I think in this example I prefer White after 1. g4! He's opening the g-file for his rook(s), and Black's king and pieces look a bit uncoordinated to defend against this. 1...d3? is obviously met by 2. Rxd3, and Black would be much worse after 1...fxg4, so he probably has to allow 2. gxf5 gxf5 followed by either 3. Qh5 or 3. Rg1+, both of which are probably going to hurt a little bit.
Also it must be added that there is no other idea White can play on. If he sits around doing nothing those central Black pawns will inevitably prove lethal I believe.
24 Feb 09
1 edit
Actually !~TONY~! and heinzkat are right. Position in diagram is after 36th move in Bronstein-Petrosian, 1978, USSR. Bronstein played 37.g4 which was his only chance to get more space for his heavy pieces. If he would stall then Black would have at least no worse position. Petrosian had to resign after few moves. Here is whole game:
24 Feb 09
Originally posted by Korchso I guess the games are from the "petrosian-like exchange sacrifice", right? are these from the my predecessors volume about petrosian?
Actually !~TONY~! and heinzkat are right. Position in diagram is after 36th move in Bronstein-Petrosian, 1978, USSR. Bronstein played 37.g4 which was his only chance to get more space for his heavy pieces. If he would stall then Black would have at least no worse position. Petrosian had to resign after few moves. Here is whole game:
[pgn]
[Event "USSR"]
[Si ...[text shortened]... e4 37. g4
Qd8 38. gxf5 gxf5 39. Qh5 Qf8 40. Ra2 d3 41. Rg2+ 1-0
[/pgn]
24 Feb 09
3 edits
Originally posted by KorchI think the main question here is whether to grab the pawn or not, and I think white should do it, it also has dangerous threats against the h pawn. I don't see any tricks with 1...d4 2.Ne2, or maybe even 2.Bxh6 and then Ne2. and I would evaluate this position as better for white.
Next position to evaluate.
[fen]r2qnrk1/pb2b1pp/1p6/2ppPp2/5B2/2NBP3/PPQ2PPP/2R2RK1 b - - 0 14[/fen]
Black to move.
edit:
sorry I thought it was white to move. for black to move, 1...g4 would actually trap the white bishop, but after 1...g4? 2.Bg3 f4? 3.Bxh7 Kh8 4.Qg6! fxg3? 5.Qh6, white would mate inevitably. so that plan doesn't work.
I looked at 1...Bc1 to protect the pawn, but that fails to 2.Nxd5 Qxd5 3.Bc4, picking up the queen.
1...g6 would be too risky, allowing white have dangerous space with the dark squares, including the ones that the pawn controls.
So I would play 1...Qd7 in this position, with the plan of Nc7 and Ne6, blocking the pawn, and later placing rooks behind the center pawns.
my evaluation would be the position is roughly equal.
24 Feb 09
2 edits
Thanks for the advice, trouble is I don't know what I'm supposed to be evaluating! I really should read that judgement and planning book I've got somewhere🙄
ok i'll have a go,
I 'd say blacks king and centre are a little weak, if he can block the centre, with say Bc8/e6, develop with Nc7, Q, connect rooks and Bf8 he may be then able to mobilise his queenside pawn majority. So I would play Bc8.
24 Feb 09
Originally posted by diskamylIt's black's move!
I think the main question here is whether to grab the pawn or not, and I think white should do it, it also has dangerous threats against the h pawn. I don't see any tricks with 1...d4 2.Ne2, or maybe even 2.Bxh6 and then Ne2. and I would evaluate this position as better for white.
edit:
sorry I thought it was white to move. for black to move, 1...g4 w ...[text shortened]... h the plan of Nc7 and Ne6, blocking the pawn, and later placing rooks behind the center pawns.
24 Feb 09
Originally posted by jonrothwell...Bc8-e6 would be nice, but it allows Nxd5 immediately (when ...Qxd5 loses to Bc4).
Thanks for the advice, trouble is I don't know what I'm supposed to be evaluating! I really should read that judgement and planning book I've got somewhere🙄
ok i'll have a go,
I 'd say blacks king and centre are a little weak, if he can block the centre, with say Bc8/e6, develop with Nc7, Q, connect rooks and Bf8 he may be then able to mobilise his queenside pawn majority. So I would play Bc8.
I would like Black's position if i could have 2 moves in a row! failing that, ...g6 followed by trying to get the knight to e6 even at the cost of an exchange (e.g. after Bh6).
...g5 is just too horrible to contemplate!
24 Feb 09
Originally posted by streetfighterI hate you stronger players, so smug😉 Only kidding, I give up, am going back to being a blissfully unaware 1500 and not caring a jot.
...Bc8-e6 would be nice, but it allows Nxd5 immediately (when ...Qxd5 loses to Bc4).
I would like Black's position if i could have 2 moves in a row! failing that, ...g6 followed by trying to get the knight to e6 even at the cost of an exchange (e.g. after Bh6).
...g5 is just too horrible to contemplate!
Good night y'all.
