Author: Robert Hyatt
Date: 07:43:10 01/31/99
Go up one level in this thread
On January 30, 1999 at 23:54:15, James B. Shearer wrote: > I was playing Fitter on ICC and was surprised when it let me escape with >a draw in a K and P endgame. I checked the key position afterwards with crafty >16.3 (on a 233 k6 PC). Crafty 16.3 takes 2 hours to find the winning move, h4, >at ply 16 (see log below). On the other hand crafty 15.15 finds h4 in 8 seconds >at ply 10. Fritz 4 also finds h4 in a few seconds. Looks like you may have >broken something. > James B. Shearer you must have something broken on your machine, first. I ran this on my PII/300 notebook, and get to ply 16 in a minute, not hours. Is your machine swapping/paging a lot? It takes me to depth=16 to fail high on h4, takes 2:00 on my notebook, and 25 seconds on my quad xeon... I couldn't begin to explain why it would take hours to get to ply=16 there... I am at ply=17 failing high again after only 3 minutes on my notebook. No idea why it takes 16 plies however... but I'll look... >hash table memory = 12M bytes. >pawn hash table memory = 2M bytes. >EGTB access enabled >using tbpath=./TB >0 piece tablebase files found >pondering disabled. >book learning disabled >result learning disabled >position learning disabled >noise level set to 0. > > >Crafty v16.3 > > >White(1): in fit40 >White(1): setboard 8/8/4p1p1/1p1pPk1p/p2Pp3/P1P3PP/1P2K3/8 b - - 0 40 > > +---+---+---+---+---+---+---+---+ > 8 | | | | | | | | | > +---+---+---+---+---+---+---+---+ > 7 | | | | | | | | | > +---+---+---+---+---+---+---+---+ > 6 | | | | | *P| | *P| | > +---+---+---+---+---+---+---+---+ > 5 | | *P| | *P| P | *K| | *P| > +---+---+---+---+---+---+---+---+ > 4 | *P| | | P | *P| | | | > +---+---+---+---+---+---+---+---+ > 3 | P | | P | | | | P | P | > +---+---+---+---+---+---+---+---+ > 2 | | P | | | K | | | | > +---+---+---+---+---+---+---+---+ > 1 | | | | | | | | | > +---+---+---+---+---+---+---+---+ > a b c d e f g h > >Black(1): exit > >Black(1): >Black(1): analyze >end-game phase > clearing hash tables > time surplus 0.00 time limit 30.00 (3:00) > depth time score variation (1) > 1 0.01 2.51 1. ... g5 > 1-> 0.02 2.51 1. ... g5 > 2 0.02 -- 1. ... g5 > 2 0.03 2.06 1. ... g5 2. h4 > 2-> 0.04 2.06 1. ... g5 2. h4 > 3 0.05 1.86 1. ... g5 2. Kd2 Kg6 3. h4 > 3-> 0.06 1.86 1. ... g5 2. Kd2 Kg6 3. h4 > 4 0.07 1.81 1. ... g5 2. Ke3 g4 3. h4 > 4-> 0.09 1.81 1. ... g5 2. Ke3 g4 3. h4 > 5 0.10 1.87 1. ... g5 2. Ke3 h4 3. gxh4 gxh4 4. > b4 > 5-> 0.13 1.87 1. ... g5 2. Ke3 h4 3. gxh4 gxh4 4. > b4 > 6 0.15 1.61 1. ... g5 2. Ke3 h4 3. g4+ Kg6 4. Kf2 > Kf7 5. Ke3 > 6-> 0.18 1.61 1. ... g5 2. Ke3 h4 3. g4+ Kg6 4. Kf2 > Kf7 5. Ke3 > 7 0.36 1.77 1. ... g5 2. Ke3 g4 3. h4 Kg6 4. Kf4 > Kf7 > 7-> 0.58 1.77 1. ... g5 2. Ke3 g4 3. h4 Kg6 4. Kf4 > Kf7 > 8 0.84 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke3 Ke7 6. b4 <HT> > 8-> 0.88 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke3 Ke7 6. b4 <HT> > 9 1.39 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke3 Ke7 > 9-> 1.53 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke3 Ke7 > 10 3.57 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Ke3 > 10-> 3.67 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Ke3 > 11 6.64 1.71 1. ... g5 2. Ke3 Kg6 3. g4 hxg4 4. > hxg4 Kf7 5. Ke2 Ke7 6. Ke3 Kd7 7. b4 > 11-> 7.36 1.71 1. ... g5 2. Ke3 Kg6 3. g4 hxg4 4. > hxg4 Kf7 5. Ke2 Ke7 6. Ke3 Kd7 7. b4 > 12 13.20 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Kd2 Kd7 7. Ke3 > 12-> 13.98 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Kd2 Kd7 7. Ke3 > 13 34.12 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Kd2 Kd7 7. Ke3 Ke7 > 13-> 36.71 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Kd2 Kd7 7. Ke3 Ke7 > 14 1:18 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Kd2 Kd7 7. Ke2 Kc6 > 8. Ke3 > 14-> 1:27 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Kd2 Kd7 7. Ke2 Kc6 > 8. Ke3 > 15 3:19 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Ke3 Kd7 7. Ke2 Kc6 > 8. Ke3 Kd7 > 15-> 39:42 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Ke3 Kd7 7. Ke2 Kc6 > 8. Ke3 Kd7 > 16 47:08 1.71 1. ... g5 2. Ke3 Kg6 3. Kf2 h4 4. g4 > Kf7 5. Ke2 Ke7 6. Ke3 Kd7 7. Ke2 Kc7 > 8. Kd2 Kc6 9. Ke3 > 16 124:25 ++ 1. ... h4!! > 16-> 125:32 2.10 1. ... h4 > 17 154:20 ++ 1. ... h4!! > 17 155:59 2.50 1. ... h4 2. gxh4 Kf4 3. Kf2 e3+ 4. > Ke2 Ke4 5. Ke1 Kd3 6. Kd1 e2+ 7. Ke1 > Ke3 8. h5 gxh5 9. h4 Kd3 10. b4 axb3 > 17-> 157:36 2.50 1. ... h4 2. gxh4 Kf4 3. Kf2 e3+ 4. > Ke2 Ke4 5. Ke1 Kd3 6. Kd1 e2+ 7. Ke1 > Ke3 8. h5 gxh5 9. h4 Kd3 10. b4 axb3 > 18 257:03 ++ 1. ... h4!! > 18-> 272:48 2.89 1. ... h4 2. gxh4 Kf4 3. Kf2 e3+ 4. > Ke2 Ke4 5. Ke1 Kd3 6. Kd1 e2+ 7. Ke1 > Ke3 8. h5 gxh5 9. h4 Kd3 10. b4 axb3 >Black(0): exit >Black(1): >Black(1): quit >execution complete.
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.