Author: A. Steen
Date: 18:49:01 11/20/05
Go up one level in this thread
Thomas Logan wrote: [D]r6k/p2bq3/np1p1brn/1NpPp1pp/1PP1Pp2/P2Q1P1P/1R3NP1/3BBRK1 b - - 0 26 >If there is an exchange of minor pieces on g4 the pawn on a7 is protected and >rook on a8 is free to move without pawn sac > >Tom Tom, please try this line- 26. .. g4 27. fxg4 hxg4 28. Nxg4 Nxg4 29. Bxg4 Bxg4 30. hxg4 which I think is the scenario you speak about (exchange sequence may differ, but the same end result). So we get- [D]r6k/p3q3/np1p1br1/1NpPp3/1PP1PpP1/P2Q4/1R4P1/4BRK1 b - - 0 30 Here black cannot just grab the pawn on g4 as white counters with Q-h3+ (another reason for .. Q-h7 prior to the ..g4 advance). So here I believe you want to play .. Ra-g8 with the (IMO irrelevant) a7 pawn still protected (and take the g4 pawn next move, which is then possible and probably the best move available). This is the resulting position- [D]6rk/p3q3/np1p1br1/1NpPp3/1PP1PpP1/P2Q4/1R4P1/4BRK1 w - - 0 31 But please don't look at it first with the computer analysis. Just think. Black now has 2 pawns (a7 and d6) which need piece protection if they are to survive. If the two rooks are to stay on g, that means only the BQ can protect both. Not good use for a queen! The BB could do it on b8 after some shuffling (will white start the a-pawn advancing at the right moment?), but it clearly needs to be on the active diagonal to h4. So, if black wants to resolve the game, he has to face up to giving a pawn. Better the one on a7 than the one on d6. So, why not .. Ra-g8 originally, instead? :) Back to the last board. Here I do not like black's position at all, and consider it may actually be losing. Compared to the option K. chose, black is a tempo down, the WN is menacing a return to the centre and after 31. R-f3 Rxg4 (warning - I haven't checked if black is a little better off postponing the pawn capture) white has nothing to fear on the K-side. Indeed, 32. R-h3+ turns the tables on black! We get- [D]6rk/p3q3/np1p1br1/1NpPp3/1PP1PpP1/P2Q4/1R4P1/4BRK1 w - - 0 31 Black cannot block the check. Blocking by rook loses the exchange, blocking by bishop results in the h rook dropping back a square or two with a view to making place for 34. Q-h3 (and 1-0). So the king must run. [D]6r1/p3q1k1/np1p1b2/1NpPp3/1PP1Ppr1/P2Q3R/1R4P1/4B1K1 w - - 0 33 Can you see what follows? [spoiler space] [spoiler space] [spoiler space] [spoiler space] [spoiler space] [spoiler space] [spoiler space] [spoiler space] [spoiler space] 33. Q-d1 with the twin threats of QxR and Q-a4. Black's Q-side suddenly looks more vulnerable, doesn't it? This is possibly one of the reasons why Hydra would hold back from a4-a5, hoping to get a Q in to a4 instead at the right moment. After 33. .. K-f8 (I can't see anything better, but I am tired, what does Fritzy think?) 34. Q-a4 N-c7 we get- [D]5kr1/p1n1q3/1p1p1b2/1NpPp3/QPP1Ppr1/P6R/1R4P1/4B1K1 w - - 0 35 The fight is certainly not over but white has the play. I would not want to be facing a Hydra monster in this. Totally unlike K's line with 26. .. Ra-g8 with a "sure-fire" 0.5-0.5. :) >OK thanks > >If Hydra did not bite on a7 transposition is likely - no ? The a7 pawn was surely irresistible to _all_ comps... :) But in the hypothetical case that Hydra did not take it, no, I think we would not get transpositions as there would not be as widespread exchanges on g4. Remember I favour 27. .. Q-h7 over 27. .. g4, with my justifying analysis given in- http://www.talkchess.com/forums/1/message.html?463219 where you can see the light-squared bishops stay on the board. :) >btw I agree move 34 was a blunder > >I saw that as soon as it was made > >Tom Best, A.S.
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