Author: Danniel Corbit
Date: 11:25:12 05/06/98
Go up one level in this thread
On May 06, 1998 at 03:46:28, Danniel Corbit wrote:
[snip]
>>K6n/2P5/1q6/8/8/7k/8/n7 b
>>
>>White: Ka8 Pc7
>>Black: Kh3 Qb6 Na1 Nh8
>>
>>Black to move cannot win this position despite the huge material
>>advantage. Computers will know in there search that exchanging the
>>Queen for the pawn will lead to a draw but probably most, if not all,
>>will give black a big plus score in the eval.
>>
>>Black's best try is to enter a QNK v QK ending (white will win one of
>>the
>>black Knights with a check/fork) but that is a draw also. Unless Ferret
>>finds a mate in two hundred and something :-)
>I'll have to let this one crank. It seems funny that a huge positive
>eval would result when the result is fairly obvious.
You are right that the eval stays huge. Here are the last five of
twenty plies by Crafty:
16 59.18 14.20 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qe5
7. Kb7 Qd5+ 8. Kb8 Qb3+ 9. Ka7 Qa2+
10. Kb8 Qb1+ 11. Ka7 Qg1+ 12. Ka8 Qh1+
<HT>
16-> 1:18 14.20 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qe5
7. Kb7 Qd5+ 8. Kb8 Qb3+ 9. Ka7 Qa2+
10. Kb8 Qb1+ 11. Ka7 Qg1+ 12. Ka8 Qh1+
<HT>
17 1:43 14.25 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qe5
7. Kb7 Qd5+ 8. Kb8 Qd6 9. Kb7 Qb4+
10. Ka7 Qd4+ <HT>
17-> 2:23 14.25 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qe5
7. Kb7 Qd5+ 8. Kb8 Qd6 9. Kb7 Qb4+
10. Ka7 Qd4+ <HT>
18 4:44 14.22 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qe5
7. Kb7 Qd5+ 8. Kb8 Qd6 9. Kb7 Qb4+
10. Ka7 Qg4 11. Kb8 Qf4 <HT>
18-> 6:45 14.22 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qe5
7. Kb7 Qd5+ 8. Kb8 Qd6 9. Kb7 Qb4+
10. Ka7 Qg4 11. Kb8 Qf4 <HT>
19 9:03 14.22 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qe5
7. Kb7 Qd5+ 8. Kb8 Qd6 9. Kb7 Qb4+
10. Ka7 Qd4+ 11. Kb8 Qb2+ 12. Ka7 Qc1
13. Kb8 Qf4 14. Kb7 Qe4+
19-> 14:07 14.22 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qe5
7. Kb7 Qd5+ 8. Kb8 Qd6 9. Kb7 Qb4+
10. Ka7 Qd4+ 11. Kb8 Qb2+ 12. Ka7 Qc1
13. Kb8 Qf4 14. Kb7 Qe4+
20 21:43 14.22 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qf4
7. Kb7 Qf3+ 8. Kb8 Qb3+ 9. Ka7 Qa3+
10. Kb8 Qd6 11. Kb7 Qb4+ 12. Ka7 Qd4+
13. Kb8 Qb2+ 14. Ka7 Qf2+ 15. Kb7 Qb2+
<HT>
20-> 35:23 14.22 1. ... Qa6+ 2. Kb8 Qb5+ 3. Ka7 Qa4+
4. Kb7 Qe4+ 5. Ka7 Qe3+ 6. Kb8 Qf4
7. Kb7 Qf3+ 8. Kb8 Qb3+ 9. Ka7 Qa3+
10. Kb8 Qd6 11. Kb7 Qb4+ 12. Ka7 Qd4+
13. Kb8 Qb2+ 14. Ka7 Qf2+ 15. Kb7 Qb2+
<HT>
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