Author: Howard Exner
Date: 04:37:01 02/16/98
Go up one level in this thread
On February 16, 1998 at 07:25:00, Howard Exner wrote: >On February 15, 1998 at 17:41:13, Amir Ban wrote: >>No. 601 (g4): >> >>This is a draw assignment. I don't know about this one, and I don't find >>any clear line here. It seems to be a positional test: If 1...g4 2.h4 >>and then white can make many different tries to win, and maybe they all >>fail. Here is the Ecm line: [Event ""] [Site "SSSR"] [Date "1952.32.32"] [Round ""] [White "Aronin"] [Black "Smyslov"] [Result "1/2-1/2"] [BlackElo " "] [WhiteElo " "] [FEN "8/p5k1/2p2p2/4p1p1/1p2P3/1P4PP/1PP5/5K2 b - - 0 1"] 1... g4 2. h4 c5 3. Ke2 Kh7 4. Kd3 Kh6 5. c3 a5 6. cxb4 axb4 1/2-1/2 Note how white is denied the move Kc4 as the reply f5! will win for black. That wily Smyslov. >It looks like g4 is intented to prevent g4 by white, but I'm not >>convinced that failing to play g4 loses. E.g. 1...Kg6 2.g4 how does >>white win ? Here is some home analysis showing possible white win: [Event ""] [Site "SSSR"] [Date "1952.32.32"] [Round ""] [White "Aronin"] [Black "Smyslov"] [Result "1/2-1/2"] [BlackElo " "] [WhiteElo " "] [FEN "8/p5k1/2p2p2/4p1p1/1p2P3/1P4PP/1PP5/5K2 b - - 0 1"] 1... Kg6 2. g4 Kf7 3. Ke2 Ke6 4. Kd3 a5 5. Kc4 Kd6 6. c3 bxc3 7. bxc3 Kd7 8. b4 axb4 9. Kxb4 Kd6 10. Kc4 Kd7 11. Kc5 Kc7 12. c4 Kb7 13. Kd6 Kb6 14. Ke6 This will transpose to a Queen/pawn ending where the draw will be problematic for black. >> >>Recommend: Someone explain what this position is about. >> >> >>No. 617 (Rxa6): >> >>The idea is clear: 1.Rxa6 Rxa6 2.d6! Qxe5 3.fxe5, but is it good enough >>to win ? >> >>Recommend: Investigate. Here is the book line which looks like a win. Note that Rb1 is better than Re1 at move #5. [Event ""] [Site " White to move "] [Date "1997.06.11"] [Round ""] [White "Pos 617"] [Black "ECM.EPD"] [Result "*"] [BlackElo ""] [WhiteElo ""] [FEN "3r2k1/p6p/b2r2p1/2qPQp2/2P2P2/8/6BP/R4R1K w - - 0 1"] 1. Rxa6 Rxa6 2. d6 Qxe5 3. fxe5 Ra4 4. Bd5+ Kf8 5. Rb1 >> >> >>No. 623 (Rc4): >> >>After 1...Rc4 white mustn't take on c4, but the continuation 2.Rc1 Bc5 >>3.Kg2 Bxf2 4.Kxf2 is not an obvious win. I find Bc5 which is also not >>decisive. >> >>Recommend: Investigate. > >[Event ""] >[Site " Black to move "] >[Date "1997.06.11"] >[Round ""] >[White "Pos 623"] >[Black "ECM.EPD"] >[Result "*"] >[BlackElo ""] >[WhiteElo ""] >[FEN "6k1/p3b1pp/4p3/4Pp2/Pp1r1P1P/1P4P1/2p2R2/5RK1 b - - 0 1"] > >1... Rc4 2. Rc1 Bc5 3. Kg2 Bxf2 4. Kxf2 Rc3 > >At this juncture there is not much white can do. If the black king >approaches the c2 pawn black can march his king up the kingside. >If white trys to prevent the king march with say h5 then black >advances g6 and swaps to make room to advance. Finally if white >shuffles the king around gurding the g3 pawn then again black can move >the king up the d file. The key in all of this is to not worry about >losing the c2 pawn as it will cost white too much time. Black should >avoid plans like Rxb3 which needlessly lets the white rook play Rxc2. > >Here is the continuation of a sample analysis: >5. h5 g6 6. hxg6 hxg6 7. a5 >Kf7 8. Kg2 g5 9. Kf2 Kg6 10. fxg5 Kxg5 11. Kg2 Kg4 and so on. >> >> >>No. 624 (Qe6): >> >>1.Qe6 Qe3 and I cannot find the win. Instead, I think 1.Kh2 wins. This >>is a complicated position to be sure. > >The book only gives the wrong reply Rxe6 so Qe6 is not the correct key. >> >>Recommend: Change key to Kh2. > >Will 1.Kh2 Rge3 2.Qxd7 h5! hold on? There may be a drawing perpetual >here. >I'll investigate this line further also. > >I'll reply to the rest of your post later. This is fun stuff!
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