Author: Ed Schröder
Date: 23:26:58 01/21/01
Go up one level in this thread
On January 21, 2001 at 23:44:06, Howard Exner wrote: >On January 21, 2001 at 22:47:29, Jeff Lischer wrote: > >>Ed, >> >>What is going on with this position?!? If I just give the position to Century, >>it never considers Rg8. It finds O-O quite early (ply 5) and stays with it. If I >>play through the moves of the game having Century analyze as it goes, it never >>finds O-O. Instead it gives the log file above. Does this have something to do >>with the hash table usage? I was using the default settings with 60 Mb hash >>table. > > >Same result here. When just loading the game epd with no game history, I get >this on an Athlon 900. >Nothing but O-O from zero seconds up to over 6 minutes, when I stopped the >analysis. > >Thinking.... > > +---+---+---+---+---+---+---+---+ RC3D6.EPD - Pos 1 >8 | *R| | | | *K| | | *R| > +---+---+---+---+---+---+---+---+ 00:00:00 00:00:00 >7 | *p| *Q| | *p| *p| *p| *B| *p| > +---+---+---+---+---+---+---+---+ >6 | | *p| *N| | | *N| *p| | Time infinite > +---+---+---+---+---+---+---+---+ Hash 60 Mb >5 | | | | | | | | | Engine Rebel Century 3.0 > +---+---+---+---+---+---+---+---+ Personality Rebel Century 3 >4 | | | p | | | | | | anti-GM Off > +---+---+---+---+---+---+---+---+ Tactics Off >3 | | p | N | | | N | p | | Bluff Chess Off > +---+---+---+---+---+---+---+---+ Style Normal >2 | p | B | | | p | p | K | p | Strength Strongest > +---+---+---+---+---+---+---+---+ Search Normal Search >1 | R | | | Q | | R | | | > +---+---+---+---+---+---+---+---+ > a b c d e f g h > >r3k2r/pq1pppbp/1pn2np1/8/2P5/1PN2NP1/PB2PPKP/R2Q1R2 b kq - > >[Event "?"] >[Site "?"] >[Date "??.??.????"] >[Round "?"] >[White "Pos 1"] >[Black "RC3125D6.EPD"] >[Result "*"] >[WhiteElo "?"] >[BlackElo "?"] >[FEN "r3k2r/pq1pppbp/1pn2np1/8/2P5/1PN2NP1/PB2PPKP/R2Q1R2 b kq - 0 1"] > >1..* > >00:00:00 1.00 -0.11 1..O-O >00:00:00 1.05 -0.11 1..Ne4 2.Nxe4 Bxb2 >00:00:00 1.06 -0.10 1..d6 >00:00:00 1.09 0.02 1..Ne5 >00:00:00 2.00 -0.14 1..Ne5 2.Nd5 Nxd5 3.Qxd5 >00:00:00 2.01 -0.12 1..d6 2.e3 >00:00:00 2.02 -0.11 1..Ne4 2.Nxe4 Bxb2 >00:00:00 3.00 -0.11 1..Ne4 2.Nxe4 Bxb2 >00:00:00 3.01 -0.09 1..d6 2.Nd5 Nxd5 3.Bxg7 >00:00:00 3.02 -0.02 1..Ne5 2.Kg1 Ne4 3.Nxe4 >00:00:00 4.00 -0.02 1..Ne5 2.Kg1 Ne4 3.Nxe4 Nxf3 >00:00:00 5.00 -0.14 1..Ne5 2.Nd5 Nxf3 3.Bxf6 Ne1 4.Kg1 >00:00:00 5.01 -0.02 1..Ne4 2.Nxe4 Bxb2 3.Rb1 Bg7 >00:00:00 6.00 -0.09 1..Ne4 2.Nxe4 Bxb2 3.Rb1 Bg7 4.Qd6 >00:00:00 6.03 -0.05 1..O-O 2.Qd2 d6 3.Rad1 Rac8 4.e3 >00:00:01 7.00 -0.01 1..O-O 2.Qd2 Ne5 3.Nd5 Nxd5 4.Qxd5 > Qxd5 5.cxd5 Nxf3 6.Bxg7 (0) > >00:00:02 8.00 -0.01 1..O-O 2.Qd2 Ne5 3.Nd5 Nxd5 4.Qxd5 > Qxd5 5.cxd5 Nxf3 6.Bxg7 Kxg7 (1) > >00:00:05 9.00 -0.01 1..O-O 2.Qd2 Ne5 3.Rad1 Rab8 4.Qf4 > Nh5 5.Qh4 (3) > >00:00:13 10.00 -0.02 1..O-O 2.Qd2 d6 3.Rad1 Rac8 4.e4 > Qd7 5.e5 Ne8 6.exd6 Nxd6 (7) > >00:00:41 11.00 -0.01 1..O-O 2.Qd2 Ne5 3.Rad1 d6 4.Nd5 > Nxd5 5.cxd5 Rac8 6.Nxe5 Bxe5 7.Bxe5 (22) > >00:01:59 12.00 -0.02 1..O-O 2.Nd5 Nxd5 3.Bxg7 Nf4 4.gxf4 > Kxg7 5.Qd5 d6 6.Ng5 (66) > > >Positions : 148.594.689 >Nodes per second : 398.377 > >Extensions (checks) : 1.875.978 (1%) >Extensions (captures) : 1.783.255 (1%) >Extensions (king safety) : 16.651 (0%) >Extensions (on depth) : 0 (0%) >Extensions (remaining) : 31.330 (0%) >Extensions (total) : 3.707.214 (2%) > >Hash Table : 1.015.881 1.083.909 (99%) >Average depth : 13 >Deepest depth : 35 > >I'll try playing the moves through with the game history and see if the quirky >Rg8 rears its ugly head. Yes, you need the game history loaded to get 12..Rg8 later replaced by 12..d6 Ed
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