Author: Robert Hyatt
Date: 07:07:25 11/28/03
Go up one level in this thread
On November 28, 2003 at 03:20:23, Russell Reagan wrote: >On November 28, 2003 at 01:42:13, Robert Hyatt wrote: > >>First question, does ruffian find the draw quickly if you set up the >>position with FEN as opposed to entering the complete game history? >> >>If so I have no idea what is happening... > >Ruffian got it at 6 seconds the second time I tried it. I know that Ruffian >returns a draw score if the position has only occured twice (instead of the >normal three occurances required for a draw). Bruce describes drawbacks to this >approach: http://www.brucemo.com/compchess/programming/repetition.htm > >Does Crafty require the position to have occured three times before it results >in a draw? If so, that could account for the extra time needed. Crafty requires a two-fold repetition for draws, except that in the first two plies of search, only 3-fold is accepted. In this case, that second rule is not used since there is no game history and a repetition can't occur in the first 2 plies as a result. > > >>I tried it here and crafty only takes a few seconds to see the >>draw... do you have a position.bin file? Delete it and try again. > >Here is what I get with Crafty 19.3, after deleting the position.bin file. Both >times are just setup from the FEN string with the engines restarted before >analysis begins. It only took 3:17 for Crafty this time (instead of 4:02 last >time) to get a 0.00 score. At 1:57 I think we can call it a draw though (-0.02). > >c193smp-k7sse WB2 99 MB: > 6 00:00 -3.69 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qd3+ Kb4 4. Qd6+ Kc4 5. Qc6+ Kd3 > 6. Qd5+ Kc3 > 7 00:01 -3.46 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Kc4 5. Qc6+ Kd3 > 6. Qd5+ Kc3 7. Qe5+ Kc2 8. Qe4+ <HT> > 8 00:01 -3.51 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qd1+ Ka3 <HT> > 9 00:01 -3.51 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qd1+ Ka3 <HT> >10 00:02 -3.56 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qd1+ Ka3 7. Qf3+ Kb4 8. Qf4+ Ka5 9. Qc7+ Ka4 10. Qa7+ Kb3 >11 00:02 -3.16 1. Kh2+!! >11 00:02 -3.17 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qd1+ Ka3 7. Qf3+ Kb4 8. Qf4+ Ka5 9. Qc7+ Ka4 10. Qa7+ Kb3 >12 00:04 -3.54 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >13 00:04 -3.14 1. Kh2+!! >13 00:05 -3.15 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >14 00:06 -2.75 1. Kh2+!! >14 00:08 -2.76 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >15 00:09 -2.36 1. Kh2+!! >15 00:12 -2.37 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >16 00:15 -1.97 1. Kh2+!! >16 00:19 -1.98 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >17 00:20 -1.58 1. Kh2+!! >17 00:27 -1.59 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >18 00:27 -1.19 1. Kh2+!! >18 00:42 -1.20 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >19 00:43 -0.80 1. Kh2+!! >19 01:18 -0.81 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >20 01:19 -0.41 1. Kh2+!! >20 01:56 -0.42 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >21 01:57 -0.02 1. Kh2+!! >21 03:02 -0.03 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke2 >22 03:17 0.00 1. Kh2+ Kc2 2. Qe4+ Kb3 3. Qe6+ Kb4 4. Qd6+ Ka5 5. Qd8+ Ka4 > 6. Qa8+ Kb4 7. Qf8+ Kc3 8. Qf3+ Kd2 9. Qd5+ Ke1 10. Qh1+ Ke2 > 11. Qe4+ Kf1 12. Qg2+ Ke1 13. Qh1+ > >Here is what I get with Ruffian. > >Ruffian_105 UCI 118 MB: > 1 00:00 -9.53 f3 a1Q > 1 00:00 -9.45 f4 a1Q > 1 00:00 -9.11 Qg2 a1Q > 1 00:00 -3.64 Qf3+ Kd2 > 1 00:00 -3.49 Qd5+ Ke2 > 1 00:00 -3.48 Kg2+ Ke2 > 2 00:00 -3.97 Kg2+ Ke2 Qh5+ Kd3 > 3 00:00 -3.87 Kg2+ Kd2 Qh6+ Kc2 Qg6+ Kc3 > 3 00:00 -3.63 Qd5+ Kc2 Qe4+ Kb3 Qd3+ Kb4 > 3 00:00 -3.43 Qf3+ Qe2 Qd5+ Kc1 Qd4 > 4 00:00 -3.43 Qf3+ Qe2 Qa3 Qg4+ Kf1 Qc4+ Kg2 > 5 00:00 -3.47 Qf3+ Kc1 Qe3+ Qd2 Qc5+ Kd1 Qh5+ Qe2 Qh8 > 6 00:00 -3.47 Qf3+ Kc1 Qe3+ Qd2 Qa3+ Kd1 Qb3+ Ke1 Qe6+ Qe2 Qa6 > 7 00:00 -3.81 Qf3+ Kc1 Qe3+ Qd2 Qa3+ Kd1 Kg2 b4 Qa4+ Ke2 Qb5+ Ke1 > 8 00:00 -4.13 Qf3+ Kc1 Qe3+ Qd2 Qa3+ Kd1 Qf3+ Kc2 Qf5+ Qd3 Qc5+ Qc4 Qf5+ > Kb2 Qe5+ Kb1 > 8 00:00 -3.83 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qe6+ Kc5 Qe3+ > Kd6 Qd3+ Ke5 > 9 00:00 -3.83 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qe6+ Kc5 Qe3+ > Kd6 Qd3+ Ke5 Qe3+ Kd5 Qf3+ Ke5 Qe3+ Kd6 >10 00:01 -3.83 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qe6+ Kc5 Qe3+ > Kd6 Qd3+ Ke5 Qe3+ Kf5 Qd3+ Ke5 >11+ 00:01 -3.48 Kg2+ >11 00:01 -3.39 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qf7+ Kc5 Qc7+ > Kd5 Qd7+ Ke4 Qg4+ Kd3 Qf5+ Kd2 Qg5+ Kc2 Qf5+ Kc1 Qc5+ Kd1 > Qd5+ Qd2 Qe5 Qd3 >12 00:02 -3.43 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qf7+ Kc5 Qc7+ > Kd5 Qd7+ Ke4 Qg4+ Kd3 Qd7+ Ke2 Qe6+ Kd1 Qg4+ Kd2 Qf4+ Kc2 > Qe4+ Kb3 Qe6+ >13 00:04 -3.33 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qf7+ Kc5 Qc7+ > Kd5 Qd7+ Ke4 Qg4+ Kd3 Qd7+ Ke2 Qg4+ Ke1 Qe4+ Qe2 Qd4 >14+ 00:06 -2.98 Kg2+ >14 00:06 0.00 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qf7+ Kc5 Qc7+ > Kd5 Qd7+ Ke4 Qg4+ Kd3 Qg6+ Ke2 Qh5+ Ke1 Qh1+ Kd2 Qh6+ Kc3 > Qg7+ >15 00:08 0.00 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qf7+ Kc5 Qc7+ > Kd5 Qd7+ Ke4 Qg4+ Kd3 Qg6+ Ke2 Qh5+ Ke1 Qh1+ Kd2 Qh6+ Kc3 > Qg7+ >16 00:11 0.00 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qf7+ Kc5 Qc7+ > Kd5 Qd7+ Ke4 Qg4+ Kd3 Qg6+ Ke2 Qh5+ Ke1 Qh1+ Kd2 Qh6+ Kc3 > Qg7+ >17 00:15 0.00 Kg2+ Kc2 Qh7+ Kc3 Qg7+ Kb3 Qf7+ Kb4 Qe7+ Kc4 Qf7+ Kc5 Qc7+ > Kd5 Qd7+ Ke4 Qg4+ Kd3 Qg6+ Ke2 Qh5+ Ke1 Qh1+ Kd2 Qh6+ Kc3 > Qg7+
This page took 0 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.