Author: James T. Walker
Date: 07:08:41 02/06/99
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On February 06, 1999 at 06:07:34, blass uri wrote: >6K1/6Q1/8/4q3/8/8/1p6/4k3 b - - 0 1 > >Fritz5's tablebase says: >(-#2) Qxg7+ (-2) Qb8+ (-2)Qe8+ (-3)Qd5+ (-3)Qe6+ (-31)Qh2 (-36)Qb5 >(0) b1B (0) b1Q (0) b1N (0) Kd1 (0) Qe2 (0) Qe3 (0) Qe4 (0) Qf4 (0) Qa5 (0) Qc5 >(0) Qf5 (0) Qh5 (0) Qd6 (0) Qf6 (0) Qc7 (0) Kf1 (0) Kd2 (0) Kf2 >(-#29) B1R (-#19) Qg5 (-#19) Qe7 (-#17) Qg3 (-#10) Qc3 (-#10) Qd4 >(-#10) Ke2 > > >I have no problem with the move Qxg7+ but I do not understand the number 2. >It is clearly not distance to mate and not distance to conversion. > ********************* Hello Uri, I get different numbers than yours. I get (-1)Qxg7 which is correct. I also get (-2)Qb8 which is also correct as far as I can tell. It's two moves to conversion. But this is with Fritz 5.32 and the Fritz 5.32 CD ROM. With the Fritz 5.00 CD ROM I get really weird numbers and the program ask for the CD on every move. This all started since the last SP1 update. ********************** >I also do not understand why the mistake in the evaluation of b1B and b1N ************** >Are you sure KQN vs KQ is not a draw? Same with KQB vs KQ ?? *************** >Fritz5's tablebase say also in the following position:8/8/8/8/1p2Q2K/q7/1k6/8 b >- - 0 1 >b3 (-49) >again I do not understand the (-49) > *********************** This is 49 moves to conversion for black. I played this out using the "move now" button and it looks reasonable. Jim Walker ************************* >Uri
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