Author: Richard Pijl
Date: 06:30:03 10/18/04
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On October 18, 2004 at 09:16:06, Anthony Cozzie wrote: >Quite an interesting game. > >Zappa doesn't need very much time to avoid Rh4, but I think this is an >evaluation issue rather than a search issue, because it scores them very >closely. > >1... Rh8-h4 2. Rb1xb7 Qd7xb7[S] 3. Ne6xg5 Rh4-h5 4. Qe1-e6 Kg8-h8 5. Ng5-e4 >Rh5-e5 6. Qe6-h3 Kh8-g8 > = (1.03) Depth: 9/23 00:00:06.07 7029kN (1158 KN/s, 133 splits, 17 aborts) >1... Ra8-e8 2. Qe1-g3 Bb7-c6 3. Ne6-c7 Be7-c5 4. Kg1-h1 Re8-e2 5. Rb1-b8 Kg8-f7 >6. Rb8xh8 Bc6xg2 7. Qg3xg2 Re2xg2 8. Kh1xg2 Qd7xc7 > = (1.11) Depth: 9/24 00:00:11.22 14547kN (1296 KN/s, 217 splits, 38 aborts) > >After Rh4, Zappa thinks that Rxb7, while White's best shot, only saves a losing >position rather than actually winning: > >1. Rb1xb7 Qd7xb7[S] 2. Ne6xg5[S] Be7-c5 3. Kg1-h1 f6xg5[S] 4. Qe1-e6 Kg8-h8 5. >Bd2-c3[S] Bc5-d4 6. Bc3xd4[S] Rh4xd4 7. Qe6-h6 Kh8-g8 8. Qh6-e6 Kg8-h8 > = (0.00) Depth: 13/30 00:01:33.25 145751kN (1563 KN/s, 3774 splits, 292 aborts) It is probably no surprise that Baron had the same opinion. IIRC Tao already had a slightly positive score though, quickly going to +2 soon after. But also Bas didn't believe in a win until the score was well above +2 (and Baron started to show negative scores). >In fact, even some moves later, Zappa still thinks it is a draw. > >[D]r6k/6q1/p7/2Q3p1/2P4r/3p4/P2B2PP/5R1K b - - 0 40 >1... Ra8-e8 2. Bd2xg5 Rh4-e4 3. Bg5-d2 Re8-e5 4. Qc5-c8 Re5-e8 5. Qc8-f5 Re4-e2 >6. Bd2-c3 Qg7xc3 7. Qf5-h5 Kh8-g8 8. Qh5-f7[S] Kg8-h8 9. Qf7-h5[S] > = (0.00) Depth: 14/31 00:03:13.85 341064kN (1759 KN/s, 8886 splits, 729 aborts) > >So in fact Zappa would happily follow the same path as the Baron ;) I think that will be true for the majority of the engines. Attack masters like Gothmog, Sjeng etc are probably the exceptions (didn't try them though, just guessing). Richard.
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