Author: Uri Blass
Date: 13:02:42 10/16/01
Go up one level in this thread
On October 16, 2001 at 14:24:00, Robert Hyatt wrote: >On October 16, 2001 at 11:13:38, John Merlino wrote: > >>On October 16, 2001 at 07:58:15, Steffen Jakob wrote: >> >>>Hi, >>> >>>this is a position from a blitz game Hossa - Sjeng: >>> >>>[D]7k/4QP2/7p/6rP/8/1K6/6r1/8 b >>> >>>For a human it's obvious that this is a draw. Hossa was rather clueless and >>>thought that white was winning. Are there any engines which show a draw value at >>>once (without significant search depth)? >>> >>>Greetings, >>>Steffen. >> >>Chessmaster 8000 sees the draw in less than a second: >> >>Time Depth Score Positions Moves >>0:00 1/3 1.18 7319 1...R2g3+ 2. Kc2 Rg2+ 3. Kd3 R2g3+ >> 4. Kc4 R3g4+ 5. Kc3 Rg3+ 6. Kb2 >> Rg2+ 7. Kc1 Rg1+ 8. Kd2 R1g2+ 9. >> Ke3 >>0:00 2/4 0.95 23824 1...R2g3+ 2. Kc2 Rg2+ 3. Kd3 R2g3+ >> 4. Kc4 R3g4+ 5. Kc3 Rg3+ 6. Kb2 >> Rg2+ 7. Kc1 Rg1+ 8. Kd2 R1g2+ 9. >> Ke3 R2g3+ 10. Ke2 Rg2+ 11. Kf1 >> Rg1+ 12. Kf2 >>0:00 3/5 0.00 45109 1...R2g3+ 2. Kc2 Rg2+ 3. Kd3 R2g3+ >> 4. Kc4 R3g4+ 5. Kc3 Rg3+ 6. Kb2 >> Rg2+ 7. Kc1 Rg1+ 8. Kd2 R1g2+ 9. >> Ke3 R2g3+ 10. Ke2 Rg2+ 11. Kf1 >> Rg1+ 12. Kf2 R1g2+ 13. Ke3 >>0:01 4/6 0.00 110883 1...R2g3+ 2. Kc2 Rg2+ 3. Kd3 R2g3+ >> 4. Kc4 R3g4+ 5. Kc3 Rg3+ 6. Kb2 >> Rg2+ 7. Kc1 Rg1+ 8. Kd2 R1g2+ 9. >> Ke3 R2g3+ 10. Ke2 Rg2+ 11. Kf1 >> Rg1+ 12. Kf2 R1g2+ 13. Ke3 >>0:02 5/7 0.00 246089 1...R2g3+ 2. Kc2 Rg2+ 3. Kd3 R2g3+ >> 4. Kc4 R3g4+ 5. Kc3 Rg3+ 6. Kb2 >> Rg2+ 7. Kc1 Rg1+ 8. Kd2 R1g2+ 9. >> Ke3 R2g3+ 10. Ke2 Rg2+ 11. Kf1 >> Rg1+ 12. Kf2 R1g2+ 13. Ke3 >>0:04 6/8 0.00 498686 1...R2g3+ 2. Kc2 Rg2+ 3. Kd3 R2g3+ >> 4. Kc4 R3g4+ 5. Kc3 Rg3+ 6. Kb2 >> Rg2+ 7. Kc1 Rg1+ 8. Kd2 R1g2+ 9. >> Ke3 R2g3+ 10. Ke2 Rg2+ 11. Kf1 >> Rg1+ 12. Kf2 R1g2+ 13. Ke3 >>0:08 7/9 0.00 1039196 1...R2g3+ 2. Kc2 Rg2+ 3. Kd3 R2g3+ >> 4. Kc4 R3g4+ 5. Kc3 Rg3+ 6. Kb2 >> Rg2+ 7. Kc1 Rg1+ 8. Kd2 R1g2+ 9. >> Ke3 R2g3+ 10. Ke2 Rg2+ 11. Kf1 >> Rg1+ 12. Kf2 R1g2+ 13. Ke3 >>0:16 8/10 0.00 2092486 1...R2g3+ 2. Kc2 Rg2+ 3. Kd3 R2g3+ >> 4. Kc4 R3g4+ 5. Kc3 Rg3+ 6. Kb2 >> Rg2+ 7. Kc1 Rg1+ 8. Kd2 R1g2+ 9. >> Ke3 R2g3+ 10. Ke2 Rg2+ 11. Kf1 >> Rg1+ 12. Kf2 R1g2+ 13. Ke3 >> >>jm > > >It isn't seeing "the draw". It is seeing "a draw". I do not know The score is positive at depth 2/4 when the main line is 22 plies so it can see advantage for white and only later changes it's opinion to draw score. "the draw" is way deep >here. "the draw" is probably beyond 40 plies deep. It is possible that it can see 40 plies at depth 3/5 or bigger depthes 45109 positions may be enough if you search the right lines. I do not know. Uri
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.