Author: Slater Wold
Date: 10:19:20 08/02/02
Go up one level in this thread
On August 02, 2002 at 12:54:00, Uri Blass wrote: >I stop the analysis. >Even at depth 14 Deep Fritz cannot see even one >single negative number. > >[D]r7/3nbpk1/4qnp1/4p1Bp/2P1P3/1pP2Q2/4N1PP/3R1R1K w - - 0 1 > >Analysis by Deep Fritz: > >1. ² (0.63): 3.Ng3 Ra6 4.Rd5 Nb6 5.Qe2 Ra4 6.Rb5 Nxc4 7.Qd1 >2. ² (0.59): 3.Rb1 Qxc4 4.Ng3 Rh8 5.Bh4 Rb8 6.Rb2 Rb6 7.Bg5 >3. ² (0.41): 3.Nc1 Qxc4 4.Ne2 b2 5.Rb1 Qxe4 6.Rxb2 Qxf3 7.gxf3 >4. ² (0.41): 3.Rd5 Nb6 4.Rb1 Nxc4 5.Bxf6+ Qxf6 6.Qd3 Ra2 7.Qxc4 Qf2 8.Rg1 >5. ² (0.41): 3.Bh4 Qg4 4.Bxf6+ Nxf6 5.Rb1 Qxe4 6.Rxb3 Ra2 7.Rb7 Qxf3 >6. ² (0.41): 3.Rd2 Qg4 4.Qxg4 hxg4 5.Rb2 Nc5 6.Nc1 Ra3 7.Kg1 g3 >7. ² (0.28): 3.Rde1 Rb8 4.Ng3 Nh7 5.Bxe7 Qxe7 6.Rf2 Nc5 7.Qd1 Nf6 >8. ² (0.28): 3.Rfe1 >9. = (0.25): 3.h3 Ra4 4.Ng3 Nc5 5.Kg1 Rxc4 6.Rde1 Nfd7 7.Bxe7 > >(Blass, Tel-aviv 02.08.2002) > >Uri Here's an example of a program seeing "right" for "wrong" reasons. h3 was the move played by Brutus - Brutus is a pretty strong program, and is very unlikely to play "unsound" moves. However, in the original game it played h3 in this position. DF after 14 ply can already tell you, h3 is _no_ good. And it doesn't even have the right line. Make DF play h3 and you play b2. Let it go 12 ply. See what the score is. I bet it is a lot worse than 0.25.
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