Author: Roland Pfister
Date: 10:00:01 10/06/00
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On October 06, 2000 at 08:04:48, Simon Finn wrote: > >No-one seems to have picked up on my comment that Steve shouldn't >abandon the position as a draw because Fritz actually has a winning >position. So here's the winning plan (based on analysis by Fischer). I comment your positions, but you have to read it from back to top. That is the way I analyzed it with my program Patzer and 5 maen TBs. > >The current position is: > >[D]8/2k5/1p4R1/1K6/P2b4/8/8/8 w - - > >Stage 1: White plays his king to a6 and rook to b5, producing a >position similar to the following: > >[D]8/2k5/Kp6/1R6/P2b4/8/8/8 w - - > >Stage 2: With his rook on b5 preventing b5+, he plays his king to a8. >Black must keep his king on c7/c8 to prevent the White king penetrating >to b8, c8 and (eventually) b7. ...Kc8 is a mistake because that results in a mate 21. > >[D]K7/2k5/1p6/1R6/P2b4/8/8/8 w - - > >Stage 3: White brings his rook to the c-file. how? I tried 1.Rb1 Be3 2.Rb2 Bc5 3.Rc2 Kc6! 4. Kb8 b5!! 5.a5 b4! 6.Rb2 Kb5 seems a draw to me. > >[D]K1k5/8/1p6/8/P2b4/8/8/2R5 b - - this is Mate in 21 > >Stage 4: Black must still keep his king on c7/c8. This allows White >to take advantage of the pin on the bishop to push his pawn to a7. > >[D]K7/P1k5/1p6/2b5/8/8/8/2R5 w - - I do not see a way to reach Stage 5. In your posting you also did see that. > >Stage 5: Losing a move with the rook if necessary, White reaches >the following position: > >[D]K7/P1k5/1p4R1/8/3b4/8/8/8 w - - bm Rc6; > >Stage 6: White sacrifices his rook at c6 to free his king and promote his pawn. This is Mate in 20 Roland
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