Author: Amir Ban
Date: 03:01:52 02/04/98
Go up one level in this thread
On February 04, 1998 at 03:12:35, Howard Exner wrote: >On February 03, 1998 at 15:52:30, Amir Ban wrote: > >> >>Yet another chapter in the ECM saga: >> >> >>No. 411 (Qxd6): >> >>I get the simple gxh7. Trying Qxd6, it gets about the same score (+3.5). >>The position is already very unbalanced anyway, so there may be more. >> >>Recommend: Scrap it, or add gxh7. > >Rebel 8 gets 3.16 for Qxd6 and 2.26 for gxh7. My subjective view >is that Qxd6 is more decisive. >> Perhaps so. Qxd6 ends up an exchange and a pawn up with the queens traded. gxh7 is two pawns up, pawn on seventh and black king stripped. Rebel is conservative. >> >>No. 422 (f4): >> >>I find Qh4 (+92). f4 gets about the same, but I can't find a convincing >>continuation after f4 exf4 e5 (or Rb6). >> >>Recommend: Vague. Drop it. > >Book is 1.f4 exf4 2.e5 fxe5 3.bxg6 Bc8 4.Rb6 1:0 Is there better choices >for black? >> 2... f5 looks better, though white is happier in this position. The a-pawn gives black counterplay. >> >>No. 425 (Ng4+): >> >>The Ng4+ idea works, but I prefer the intermediate Bf5 Qg2 Ng4+. >> >>Recommend: Add Bf5. > >Agree >> >> >>No. 427 (Ne2+): >> >>Perhaps I have the position wrong. Black is already a queen down and it >>looks hopeless. I find Rxg4 for the exciting score of -1209. >> >>Recommend: Find what the right position is. > >The Black Queen is on e6 but the key move might want to be changed >to Rxg4. >> >> >>No. 434 (Ncxd6): >> >>This is fairly difficult. Nbxd6 is a transposition. >> >>Recommend: Add Nbxd6. > >Agree >> >> >>No. 440 (Rf3): >> >>It looks wrong: Rf3 Bd1 and black has egg on his face. >> >>Recommend: Drop it. > >Agree as the book missed your Bd1 defense. >> >> >>No. 462 (Nxg6+): >> >>Wrong position again. I get Qxh7 mate. Mate-in-one problems are rather >>easy, for me at least. >> >>Recommend: Find what the right position is. > >Remove the white rook on h6. However the move Nxg6 looks too easy. >Rebel 8 sees a mate in 0 seconds. >> >> >>No. 464 (e5): >> >>I cannot find the justification for e5. If the idea is e5 dxe5 Ne6 then >>counting material actually black gains by it. >> >>Recommend: Investigate. > >after black plays dxe5 the book continues with Nf3. Black's defense is >not right and I agree that this is a vague position. Drop it as white >has >other good first moves. >> >> >>No. 467 (Rf6): >> >>I don't see a winning line after Rf6 Qf8 or Ng5. Perhaps it's the best >>move, but the assignment is "white wins" and I don't see it. >> >>Recommend: Investigate. > >The main book line is the Ng5 defense and loses to Rxg5 but Qf8 seems >to hold. >> >> >>No. 470 (Nc3+): >> >>I don't think this works: 1...Nc3+ 2.Nxc3 bxc3 3.b3 Ra8 > >The book gives Qa6 here and continues 4.Rd4 Ra8 5.Ra4 Qxa4! 0-1 > Right, and if 4.Bd4 Bb4. So it's correct. >>4.Bd4 and if the >>c-pawn falls, what is black's threat ? If now 4...Bc5 5.Qg3. >> >>Recommend: Investigate. >> >> >>No. 475 (Rh5): >> >>Probably correct, but I'm not sure. I followed 1.Rh5 Ne2+ 2.Kh1 Ng3+ >>3.hxg3 Qxf1+ 4.Kh2 now I see that 4...f6 loses but perhaps 4...h6 5.Bxh6 >>g6 holds. > >Be3 will force a mate. > Right. Keep it. >>If it's correct, it should be extremely difficult. > >Yes this will be a tough one. >> >>Recommend: Investigate. >> >> >>No. 482 (Bxb5+): >> >>I get h4. Different plan, similar result (+115). >> >>Recommend: Add h4. > >Bxb5+ seems more forceful. >> I don't know. >> >>No. 488 (Bh3): >> >>I think it's wrong: Bh3 Ne1 and black is worse than ever. >> >>Recommend: Drop it. >> >> >>No. 489 (Ne4): >> >>It's wrong: 1...Ne4 2.Nxe4 Rg6 3.Rf1! and if 3...Qe8 4.Rf8+! teaches >>black a lesson. >> >>Recommend: Drop it. > >Agree >> >> >>No. 497 (f5): >> >>After f5 exd4 I can't find anything to justify a piece (fxg6 hxg6 Bxg6 >>Nf8). >> >>Recommend: Investigate. > >Nf8 is the book defense and continues 4.Bxf7+ Kxf7 5.g6+ Kg7 6.Rdf >Bf6 7.Rxf6 1:0 >The side defense of 3... fxg6 4.Qxe6+ is simply denoted as +- but >this line might hold on. >> You mean 4.Qe6+. Seems so. Drop it. >> >>No. 500 (f3): >> >>Looks wrong: 1...f3 2.Nxf3 Qg3 3.Be3 and where is the continuation ? >> >>Recommend: Drop it. > >The book continues with 3 ... Bg4 4.Qd6 Be5 0-1. Looks correct. Is >there something better than Qd6 though? No. Rd2 and Qc5 fail. It's correct. Amir
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