Author: Michael Vox
Date: 19:25:17 03/28/02
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R. Fischer & L. Barden v GM J. Penrose & P. Clarke London 1961 [D]8/p1rbk1p1/5p1p/R1PBp2P/2K1P1P1/5P2/8/8 w - - 0 47 After 46...Ke7 As mentioned in post one of this thread, they brought in an adjudicator. In fact, FIDE World Champion Dr. Max Euwe compiled the adjudication. A summary of Dr. Euwe's dissertation on the position is in quotes below: "There are two types of chess position. In the first, it is possible to prove a clear win or draw within a reasonable time. In the second type this is not possible. The adjourned game falls into the second category of positions." "I cannot avoid my judgement being subjective; it is certainly debatable, but can hardly be refuted. For others, one can no more disprove my adjudication than I can prove it." "Let us now look at the position. I need hardly say there are only two possible results: either White wins or Black reaches a draw. A loss for White, of course may be ruled out." "I begin with a few general remarks. The first is that should White succeed in brining his c-pawn to c6 and his King to c5, the game must be won for him." "I have one more general remark. Should the White Rook succeed in definitely reaching the seventh or eighth rank, Black is lost in that case, too. By "definitely", I mean "Without Black's being able to oppose the White Rook with his own Rook"." "With these remarks in mind we try the following variations starting from the final position:" Dr. Max Euwe's analysis: 47.Ra6 Bc8 48.Ra2 Bd7 ( stopping the advance of the c-pawn ) 49.Rb2 ( threatens to penetrate the 8th rank ) 49...Kd8 50.Rf2 Rc8 51.f4 exf4 52.Rxf4 a5 53.Rf2 Kc7 54.e5 Bxg4 55.exf6 gxf6 56.Rxf6 Bxh5 57.Rxh6 Be2+ 58.Kd4 Rd8 with a draw Listeners to the broadcast were invited to forward their analysis. Dr. Euwe selected these two variations as the most notable and they were published with his analysis. Listener one's analysis: 47.Ra6 Bc8 48.Rc6 Rxc6 49.Bxc6 Ba6+ 50.Kd5 Blacks position is not so easy but he can hold with 50...Be2 51.Ba4 Bxf3 52.c6 Bxg4 53.c7 Bc8 54.Kc6 f5 55.exf5 Bxf5 and a draw due to White's wrong coloured Rook pawn Listener two's analysis: Another tricky try is the pawn sacrifice at g5 followed by h6 47.Kb4 instead of 47.Ra6 47...Ke8 48.Ra2 Ke7 49.Rc2 Be8 50.Rc1 Bc6 51.Bxc6 Rxc6 52.Rd1 a6 53.Rd5 Ke8 54.Kc4 Ke7 55.Rd1 Ke8² ( Fritz 7b reflects a small advantage for White ) I let Fritz 7b run for some 21 hours at the 46...Ke7 position. It initially reflected the same analysis as Jonas Cohonas posted earlier, however; after several more hours Fritz 7b reflected only one move which I have clipped here: 21 hours of analysis Depth 28/28 8/p1rbk1p1/5p1p/R1PBp2P/2K1P1P1/5P2/8/8 w - - 0 1 Analysis by Fritz 7b: 47.Ra3! ± (1.13) Depth: 27/52 17:47:26 42365771kN, tb=36392 I personally do not think computers are powerful enough to solve this position. There are two many pieces and variables causing the horizon to be far away. Perhaps, CSTal with it's long horizon may have some insight into the position ?! My personal opinion is the game is a draw if Black follows Dr. Euwe's advise. However, chess being chess, I think it was unsportsmanlike for Black to demand a draw and walk away from the table when White wanted to continue. Comments are always welcome! Best regards.
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