Author: Amir Ban
Date: 08:50:17 02/16/98
Go up one level in this thread
On February 16, 1998 at 10:51:48, Howard Exner wrote: >On February 15, 1998 at 17:41:13, Amir Ban wrote: > >>No. 629 (b2+): >> >>I play here Kd6. I evaluate b2+ as a blunder, and can't find any merit >>to it. >> >>Recommend: Drop it. >Here is the ECM book line: >[FEN "8/6Bp/6p1/2k1p3/4PPP1/1pb4P/8/2K5 b - - 0 1"] > >1... b2+ 2. Kc2 exf4! 3. Bxc3 f3 4. Be1 Kd4 5. Kxb2 Kxe4 6. Kc2 Ke3 >Looks ok unless I've missed something. It's nice to own the book. :-) >> Yes >>No. 636 (Rxf6): >> >>I don't find this. The line 1.Rxf6 Rxf6 2.Rd7 Rg6 3.Qf5 Qc8 4.e7 Qe8 >>5.Qd3 Re6 6.Rd8 Rxe7 is good for white, but maybe not decisive. >> >>Recommend: Investigate. > >[FEN "r4rk1/ppq3pp/2p1Pn2/4p1Q1/8/2N5/PP4PP/2KR1R2 w - - 0 1"] > >1. Rxf6 Rxf6 2. Rd7 Rg6 3. Qe7 Qc8 4. Qf7+ Kh8 5. e7 Qg8 6. Qxg8+! Rxg8 >7. Ne4 h6 8. Nc5 > >This works. >> Yes >>No. 665 (Bxh7+): >> >>After 1.Bxh7+ Kxh7 2.Qh5+ Kg8 3.Rf3 I'm still unclear on this since >>black has resources such as Nf6, Nf4, g6. They may all ultimately fail, >>I guess. >> >>Recommend: Investigate. > >Here is the mainline from the book. > >[FEN "r1b2rk1/2q1bppp/p1n1p3/1p1np1P1/5P2/1NNBBQ2/PPP4P/R4RK1 w - - 0 >1"] > >1. Bxh7+ Kxh7 2. Qh5+ Kg8 3. Rf3 Nxf4 4. Bxf4 Bxg5 5. Bxg5 > >This looks good. I'm finding that other defensive trys fail also. >White seems to have too much force directed towards the king. > I'll take your word for it ... >If 3 ... g6 4.Qh6 Bd6 5.Ne4 f5 6.exf6 Rxf6 7.Rg3 looks ok but >more input would clarify this line. >> >> >>No. 674 (Nxh7): >> >>I find Bxe6 (+96). I don't find the line 1.Nxh7 Kxh7 2.Qh5+ Kg8 3.f5 d6 >>to be better. >> >>Recommend: Drop it. > >The mainline from book works. > >[FEN "r1b2r1k/ppppq1pp/2n1n3/6N1/2B2P2/4B3/PPP3PP/R2Q1RK1 w - - 0 1"] > >1. Nxh7 Kxh7 2. Qh5+ Kg8 3. f5 Ne5 4. fxe6 Rxf1+ 5. Rxf1 Nxc4 6. Qf7+ >Qxf7 >7. exf7+ Kf8 8. Bd4 > >Here is the d6 defensive try from book. > >[FEN "r1b2r1k/ppppq1pp/2n1n3/6N1/2B2P2/4B3/PPP3PP/R2Q1RK1 w - - 0 1"] > >1. Nxh7 Kxh7 2. Qh5+ Kg8 3. f5 d6 4. Rf4 Ne5 5. Bb3 >The book stops here with +- but the following seems to confirm >the accuracy of the "+-" > > g6 6. fxg6 Rxf4 7. >Bxf4 c5 8. Bxe5 dxe5 9. Rf1 > >Is there a better defensive try here? I would play 6...Bd7 instead. Still 7.Rf1 evaluates to +1.9. Still, I don't like the fact that just the d6-variation needs more calclation than is needed to solve most other positions in the suite. Amir
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.