Author: Uri Blass
Date: 00:47:22 04/20/03
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On April 20, 2003 at 03:09:11, Anthony Cozzie wrote: >>[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 Nothing is odd A program that solves this position for tactical reasons will never see capture of the bishop in it's main line. Uri
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