Author: blass uri
Date: 13:40:05 03/19/99
Go up one level in this thread
On March 19, 1999 at 15:27:42, Robert Hyatt wrote: >On March 19, 1999 at 14:59:52, Peter McKenzie wrote: > >>On March 19, 1999 at 12:48:04, Bruce Moreland wrote: >> >>>5rk1/5ppp/p1Q1p3/1R6/q7/4b1P1/P2RPP1P/6K1 w - - 0 1 >>> >>>The key is 1. Rd8, which Kasparov didn't find. >>> >>>It isn't hard to find for a computer, but I think they will typically think it >>>is a draw. Can anyone find a score that indicates *significant* advantage to >>>white? >> >>Not me. >>I let Chop run for about half an hour on this one, and it was still saying Rd8 >>with a 0.00 score at the end. >> >>> >>>What this means in practice is, can anyone resolve (hopefully from the root) the >>>near-perpetual after: >>> >>>1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ >>> >>>bruce > > >I searched this a while and got this: > > 11-> 12.90 0.00 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. Kg2 > 12 16.30 0.00 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. Kg2 > 12-> 26.07 0.00 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. Kg2 > 13 35.13 0.00 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. Kg2 > 13-> 59.52 0.00 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. Kg2 > 14 1:49 0.26 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. g4 Qf1+ > 7. Kg3 Qg1+ 8. Kf3 Qf1+ 9. Ke3 Qh3+ > 10. Kd2 Qh6+ 11. e3 g5 12. Rxf8+ Qxf8 > 13. Qxa6 > 14-> 2:28 0.26 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. g4 Qf1+ > 7. Kg3 Qg1+ 8. Kf3 Qf1+ 9. Ke3 Qh3+ > 10. Kd2 Qh6+ 11. e3 g5 12. Rxf8+ Qxf8 > 13. Qxa6 > 15 3:25 0.00 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. g4 Qf1+ > 7. Kg3 Qg1+ 8. Kf3 Qf1+ 9. Kg3 > 15-> 6:17 0.00 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. g4 Qf1+ > 7. Kg3 Qg1+ 8. Kf3 Qf1+ 9. Kg3 > 16 8:43 0.00 1. Rd8 Qxb5 2. Qd6 Bxf2+ 3. Kxf2 Qf5+ > 4. Kg2 Qe4+ 5. Kh3 Qf5+ 6. g4 Qf1+ > 7. Kg3 Qg1+ 8. Kf3 Qf1+ 9. Kg3 > >So for one brief moment at depth=14 I had a slightly + score, but it dropped >back to 0.00 > >Bob The same thing happened to CM6000 on P200MMX 5/10 1:05 0.00 1.Rd8 Qxb5 2.Qd6 Bxf2+ 3.Kxf2 Qf5+ 4.Kg1 Qb1+ 5.Kf2 6/11 4:37 0.30 1.Rd8 Qxb5 2.Qd6 Bxf2+ 3.Kxf2 Qf5+ 4.Kg1 Qb1+ 5.Kg2 Qe4+ 6.Kh3 Qf5+ 7/12 12:38 0.00 with the same line Junior5.3 failed high after 10 minutes with evaluation 0.22 at depth 18 and after 20 minutes failed high again with evaluation 0.52 at depth 19 Uri Uri
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