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Subject: Re: Can any program find this great sacrifice played be Botvinnik !

Author: Anthony Cozzie

Date: 00:09:11 04/20/03

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>[D]8/p3q1kp/1p2Pnp1/3pQ3/2pP4/1nP3N1/1B4PP/6K1 w - - 0 29

This is a very odd position for Zappa.  It zips out to 10 ply in only 11
seconds, but then takes 5 minutes to get to depth 12, a branching factor of
6(!).  Then, it doesn't think black should take the bishop.  Odd.

1. Ne2 Na5 2. Nf4 Nc6 3. Qg5 a6 4. Bc1 Kh8 5. Nxd5
 = (0.25)       Depth: 10       00:00:11.61     3130kN
1. h3 h6 2. Ne2 Na5 3. Nf4 Nc6 4. Nxd5 Nxe5 5. Nxe7 Nd3 6. Ba3
 = (0.23)       Depth: 11       00:01:45.29     27044kN
1. Ba3 Qxa3 2. Nh5 gxh5 3. Qg5 Kf8 4. Qxf6 Kg8 5. Qf7 Kh8 6. g3 Qc1 7. Kg2 Qc2
8. Kh3 h6 9. Qf8 Kh7 10. e7 Qxc3 11. e8=Q Nxd4 12. Qxh5
 + (0.53)       Depth: 12       00:03:10.82     51012kN
1. Ba3 Qxa3 2. Nh5 gxh5 3. Qg5 Kf8 4. Qxf6 Kg8 5. Qf7 Kh8 6. g3 Qc1 7. Kg2 Qc2
8. Kh3 h6 9. Qf8 Kh7 10. e7 a6 11. e8=Q Nxd4 12. cxd4
 + (2.03)       Depth: 12       00:03:45.23     61597kN
1. Ba3 Qe8 2. Qc7 Kh8 3. Be7 Ng4 4. h3 Kg8 5. hxg4 a5 6. Bf6 Qxe6
 = (2.50)       Depth: 12       00:05:05.63     85692kN



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