Author: Howard Exner
Date: 07:51:48 02/16/98
Go up one level in this thread
On February 15, 1998 at 17:41:13, Amir Ban wrote: >No. 627 (Qxe7): > >The key works, but I find a fantastic cook: 1.Rxd8 Rxd8 2.Rxg7+! Kh8! >3.Be2! Qe5! 4.Rxh7! Kg8 5.f4! wins. > >Recommend: Add Rxd8. Indeed. The commitee will need to decide in cases of multiple solutions if one of the solutions are too easy. > > >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. :-) > > >No. 634 (Rxe3): > >I find Kh7, and next move Rxe3 kills white quickly. Playing Rxe3 >immediately does win, but the black king on g7 makes it complicated. > >Recommend: Add Kh7. Yes they both work. > > >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. > > >No. 653 (Bb5): > >This is from the WAC errata. The right move is Rh1. > >Recommend: Change key to Rh1. > > >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. 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?
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.