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Subject: strange behavior in the chessbase gui involving rybka

Author: Joseph Ciarrochi

Date: 04:19:36 03/01/06


try this position out with rybka 13d

[D] 3qk2r/1p1nbppp/2r1p3/3p4/Q2P1B2/2NbPN2/PP3PPP/R3K2R w KQk - 0 13

initially, rybka wants to play rd1  (which i think is bad)

Then, when i take back a move and forward to the same position, (be7-bf8-be7),
rybka wants to play rc1, h4, or qd1 at depth 12.


Then, i clear hash table and it goes back to wanting to play rd1. all parameters
are set to default (and preserve analysis is not checked)

can anybody replicate? Explain? This inconsistency is bad for analysis, as one
frequently goes back and forth in a position.





original moves:

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "white  slav without black a6"]
[Black "?"]
[Result "*"]
[ECO "D14"]
[PlyCount "24"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nc6 5. Nf3 Nf6 6. Bf4 Bf5 7. e3 e6 8. Bb5
Nd7 9. Qa4 Rc8 10. Bxc6 Rxc6 11. Qxa7 Bd3 12. Qa4 Be7 *




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