Monday, January 14, 2013

Field report: TJWO, Round 4 (ouch)

In which I get rolled convincingly....

3 comments:

Dante88 said...

Great analysis! A few ideas though.

Your note after 17...a6?! has the line 17...Nd5, 18.Nxd5 exd, 19.b5 cxb. In that line I had planned to play 18.Bxd5 after 17...Nd5. My light squares are weakened, but my queenside play is looming and the weak square d6 should be easily enough reached by my Knight.

I feel that my move 38.R1e2 could have been better if I had played R1e3. The idea is the same, if you take the d-pawn I get in R3e7 where my rook will cause havoc on the 7th. The difference is my King has a direct path to d3 via e2-d3.

Your comment after 45.Ra8 is quite right, Black does have more counterplay than the position deserved, but I believe the win is still in hand.

Your suggestion, 45...Be7! certainly is better than 45..Kg6, but the line you give is a little odd. I have no reason to play 47.Rxe7?! when I can simply play 47.Re1 with ideas of going to the queenside to support the c-pawn or infiltrating on the open h-file.
For instance, 45...Be7!, 46.Ra7 Rc7, 47.Re1 f5 (probably best to support the loose pawn on g4 and open the 7th rank for your Rook), 48.Re6 Ke7, 49.Rh6 and my active rook is a thorn.

It is interesting to know that the idea of 48.b5! (I think your !! is a bit generous haha!) wasn't hard for me to see at all. The night before this game I studied some writings by Capablanca for some light reading. His endgame study of Bk Pawns f7-g7-h7 vs Wt Pawns f5-g5-h5 taught me the idea of such pawn breaks.

Great analysis, and I'll link you to my chess blog as well where I'll be going over this game soon!

Dante
blog.chess.com/hoard88

Bill Brock said...

"Your note after 17...a6?! has the line 17...Nd5, 18.Nxd5 exd, 19.b5 cxb. In that line I had planned to play 18.Bxd5 after 17...Nd5. My light squares are weakened, but my queenside play is looming and the weak square d6 should be easily enough reached by my Knight."

Will break up in to mini-replies as my laptop is misbehaving.

I should note first of all that I simply meant that after 17...Nd5 18.Nxd5 exd5, the otherwise thematic 19.b5 is not a particularly good idea.

I am not crazy about the idea of 17...Nd5 18.Bxd5. Here Black plays 18...exd5: I don't see a clear path to d6, and while 19.b5 is playable, White's lightsquare weakness on the kingside hurts. (This wasn't a factor in the game line as my queenside darksquare weakness mattered more.)

Bill Brock said...

"I feel that my move 38.R1e2 could have been better if I had played R1e3. The idea is the same, if you take the d-pawn I get in R3e7 where my rook will cause havoc on the 7th. The difference is my King has a direct path to d3 via e2-d3."

Agree, but this point isn't crucial, as putting a rook on e7 after ...Bxd4 just wins anyway (even in my best case scenario -- note to move 44).

"Your suggestion, 45...Be7! certainly is better than 45..Kg6, but the line you give is a little odd. I have no reason to play 47.Rxe7?! when I can simply play 47.Re1 with ideas of going to the queenside to support the c-pawn or infiltrating on the open h-file.
For instance, 45...Be7!, 46.Ra7 Rc7, 47.Re1 f5 (probably best to support the loose pawn on g4 and open the 7th rank for your Rook), 48.Re6 Ke7, 49.Rh6 and my active rook is a thorn."

The Exchange sac line 45...Be7! 46.Ra7 Rc7 47.Rxe7!? would indeed be odd if it doesn't win by force: I think it does, but just barely. Perhaps the idea can be improved: I get your point that White shouldn't rush.

47.Re1 is probably more sensible. I am suspecious of 47...f5 because I think it opens too many lines for the rooks: what about 47...Kh7 instead? (Exchange sac should win at some point, and it may be necessary to penetrate.)