Author: Johan Melin
Date: 09:27:02 06/06/02
Go up one level in this thread
On June 05, 2002 at 15:30:18, Uri Blass wrote: >On June 05, 2002 at 13:13:50, Johan Melin wrote: > >>On June 04, 2002 at 14:12:02, Art Basham wrote: >> >>>Here white played Nb5..!! >>> >>>[D]r1b1kb1r/1p2p2p/p3Pnp1/2p5/2B2B2/2N2P2/PqP1Q2P/R3K2R w KQkq - >>> >>>Eight years ago it took my WChess 9 ply and about 10 min. to find it! >>> >>>CM5500 takes 7 ply and about 2 min on my slow machine... >> >> >>KnightDreamer on 733Mhz PIII takes 10 seconds >> >> >> 9 -79 373 1237471 e1d2 b2b4 a1b1 b4a5 e2e3 f8g7 d2c1 a5a3 >> b1b2 e8g8 (331.8k) >>Failhigh Nb5 2732237 >> 9 -68 933 3094859 ++ c3b5 (331.7k) >> 9 -52 1027 3421137 ++ c3b5 (333.1k) >> 9 -20 1214 4038747 ++ c3b5 (332.7k) >> 9 22 1433 4772956 c3b5 a6b5 c4b5 c8d7 e6d7 f6d7 f4e5 b2b4 >> c2c3 b4h4 e1d1 h8g8 b5d7 e8d7 e2b5 d7d8 >> b5b7 h4a4 (333.1k) >>CV(0.13): Nb5 Qxa1? Kf2 Qxh1 Nc7 Kd8 Qd2 Bd7 exd7! null Ne6! >> 10 62 2131 7027208 ++ c3b5 (329.8k) >> 10 85 3411 11055273 c3b5 b2a1 e1f2 a1d4 b5d4 c5d4 f4e5 f8g7 >> h1d1 b7b5 c4b3 e8g8 e5d4 (324.1k) >>CV(0.09): Nb5 axb5? Bxb5 Bd7 exd7 Nxd7 Be5 Qb4 Kf1! Rg8 Qd3! O-O-O? Rd1! none >> 11 92 6464 21115321 c3b5 b2a1 e1f2 a1d4 b5d4 c5d4 f4e5 f8g7 >> h1d1 e8g8 f2g1 b7b5 c4b3 c8b7 e5d4 >> (326.7k) > >Your knight seems to dream very fast. > >The latest Movei on p800(16 Mbytes hash) needs more than 500 seconds at depth 11 >to fail high on Nb5 and more than 15 minutes to solve the fail high. > > >What is the meaning of the CV(0.13) and CV(0.09)? >Does knightdreamer print lines that are not the pv and if this is the case what >is the rules for printing these lines. It means "Critical Variation". The CV(0.13) line is based on white moves from iteration 9 and black moves from iteration 8 and shows how iteration 9 refutes things that were believed by iteration 8. Including moves from the last iteration in the hashtable wastes memory, but I think it really helps me understand what is going on inside KnightDreamer. The value indicates how important the discovery is. For more info see: http://www3.tripnet.se/~owemelin/johan/KnightDreamer.html and click on "critical variations". /Johan Melin > >9 -25 2155 3215737 e1d2 b2b4 a1b1 b4a5 a2a4 f8g7 e2e3 e8g8 d2d1 >9 -25 3251 5042627 e1d2 b2b4 a1b1 b4a5 a2a4 f8g7 e2e3 e8g8 d2d1 >10 -24 6483 9628866 e1d2 b2b4 a1b1 b4a5 e2e3 f8g7 h1d1 e8g8 d2e1 a5a3 >10 -24 9689 14899326 e1d2 b2b4 a1b1 b4a5 e2e3 f8g7 h1d1 e8g8 d2e1 a5a3 >11 -32 33632 51298247 e1d2 b2b4 a1b1 b4a5 e2e3 f8g7 f4h6 g7h6 e3h6 b7b5 c4b3 >11 -31 50370 78038140 c3b5 >11 83 97991 152357258 c3b5 a6b5 c4b5 e8d8 f4e5 b2b4 c2c3 b4h4 e5g3 h4h5 e1c1 >c8d7 e6d7 f8g7 h1e1 f6d5 >11 83 105462 164809067 c3b5 a6b5 c4b5 e8d8 f4e5 b2b4 c2c3 b4h4 e5g3 h4h5 e1c1 >c8d7 e6d7 f8g7 h1e1 f6d5 > >Uri
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