Author: blass uri
Date: 06:04:43 05/02/99
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On May 02, 1999 at 08:15:59, Francis Monkman wrote: > >On May 02, 1999 at 05:54:47, blass uri wrote: > > >>Maybe black cannot save itself because after giving white 19.f6 g6 >>Junior found 20.Nxe6 and the evaluation goes up. >> >>Uri > >I'm sure 20 Nf3 was right, as Black now has only self-destructive moves >to make, eg your suggestion 20 ...h5 21 Nxh5 or 20 ...g5 21 Nxg5. King moves >also lose immediately. I'm pretty sure this is watertight, that's why this is a >serious question -- a 9-ply (let alone 10 or 11) should find this. 21.Nxh5 is also good in this line and Junior suggests Rad8 because in this position it can see that 21...gxh5 is leading to mate against black. I think that you need to see more than 9,10,11 plies to see that 21.Nxh5 gxh5 is losing to Qd2 For example 21.Nxh5 gxh5 22.Qd2 Rfc8 23.Qh6 Bf8 24.Qg5+ Kh7 25.Qxh5+ Kg8 26.Ng5 Bc5 27.Qh7+ Kf8 28.Qh8# is a 15 ply line and black has material advantage before the mate. It is more than 15 plies from the original position(exactly 21 plies) program may see it faster than 21 plies because of some extensions but probably not in 9,10,11 plies search. Uri
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