Author: Dieter Buerssner
Date: 04:12:04 01/05/03
Go up one level in this thread
On January 04, 2003 at 05:33:23, Sune Fischer wrote:
>In a most recent game my engine ended up in this position as black:
>
>3q4/3P2kp/5p2/p7/1p1R2P1/8/2Q2PK1/4r3 b - - 0 1
>
>It played Kf8 here and Tinker played Qxh7 (instantly by the way, ponder hit I
>think) the score dropped to -6 real fast.
>Before Kf8 the score was drawish.
>
>Whenever I see something like that I'm interested in why it couldn't sense the
>danger sooner.
I think, such a behaviour is not always untypical in endgames with queens.
Yace, P4 2.53 GHz:
815426 1.040 0.00 7. 1...Kf8 2. Qc5+ Kf7 3. Qc8 Ke7 4. Qc5+ Kf7 5.
Qc8 Ke7 6. Qc5+ Kf7 {80}
1000698 1.281 -0.40 8-- 1...Kf8 2. Qxh7 Re2 3. Rc4 Rxf2+ 4. Kxf2 Qb6+
5. Kf3 Qb7+ 6. Ke2 Qd5 7. d8=Q+ Qxd8 {-340}
1614517 2.108 -0.44 8t 1...Kf8 2. g5 Re5 3. gxf6 Rg5+ 4. Kf1 Rh5 5.
Qc8 Rh1+ 6. Ke2 {0}
2770376 3.739 -0.44 8. 1...Kf8 2. g5 Re5 3. gxf6 Rg5+ 4. Kf1 Rh5 5.
Qc8 Rh1+ 6. Ke2 {0}
3121172 4.229 -0.84 9-- 1...Kf8 2. g5 Re5 3. gxf6 Rg5+ 4. Kf1 Kf7 5.
Qxh7+ Kxf6 6. Qh6+ Kf5 7. Rd5+ Kg4 8. Rxg5+ Kf4
{-500}
3503730 4.795 -1.84 9-- 1...Kf8 2. g5 Re5 3. f4 b3 4. Qc8 Qxc8 5.
dxc8=Q+ Ke7 {-841}
5434634 7.327 -2.73 9t 1...Kf8 2. Rd6 Re7 3. Qc8 Rxd7 4. Qxd8+ Rxd8 5.
Rxd8+ Ke7H 6. Ra8H f5H 7. gxf5H {-420}
6613263 8.976 -2.72 9t+ 1...Qa8+ 2. f3 Qd8 3. Rxb4
7297301 9.954 -1.69 9t 1...Qa8+ 2. f3 Qd8 3. Qc8 Qe7 4. Re4 Rxe4 5.
d8=Q Re2+ 6. Kh3H Qxd8H {660}
9470459 13.054 -1.69 9. 1...Qa8+ 2. f3 Qd8 3. Qc8 Qe7 4. Re4 Rxe4 5.
d8=Q Re2+ 6. Kh3 Qxd8 {660}
12461787 17.349 -1.62 10t 1...Qa8+ 2. f3 Qd8 3. Kf2 b3 4. Qc8 Qe7 5. Re4
Rxe4 6. d8=Q Qxd8 7. Qxd8H {-341}
17235069 24.013 -1.62 10. 1...Qa8+ 2. f3 Qd8 3. Kf2 b3 4. Qc8 Qe7 5. Re4
Rxe4 6. d8=Q Qxd8 7. Qxd8 {-341}
26366801 37.196 -1.35 11t 1...Qa8+ 2. f3 Qd8 3. Qc8 Qe7 4. Re4 Rxe4 5.
d8=Q Re2+ 6. Kh3 Rh2+ 7. Kxh2 Qe2+H 8. Kg1H
Qe1+H 9. Kg2H Qe2+H 10. Kg3H Qe1+H 11. Kh3H
Qh1+H 12. Kg3H Qe1+H 13. Kh3H Qh1+H 14. Kg3H
Qe1+HR {-841}
35822587 50.690 -1.35 11. 1...Qa8+ 2. f3 Qd8 3. Qc8 Qe7 4. Re4 Rxe4 5.
d8=Q Re2+ 6. Kh3 Rh2+ 7. Kxh2 Qe2+ 8. Kg1 Qe1+
9. Kg2 Qe2+ 10. Kg3 Qe1+ 11. Kh3 Qh1+ 12. Kg3
Qe1+ 13. Kh3 Qh1+ 14. Kg3 Qe1+ {-841}
57011217 1:21.4 -1.75 12-- 1...Qa8+ 2. f3 Qd8 3. g5 fxg5 4. Kf2 Rh1 5. Qc8
Qe7 6. Re4 b3 7. Rxe7+ Kg6 {-841}
60673716 1:26.4 -2.75 12-- 1...Qa8+ 2. f3 Qd8 3. g5 fxg5 4. Kf2 Rh1 5. Qc8
Qe7 6. Re4 b3 7. Rxe7+ Kg6 {-841}
117583892 2:48.8 -4.12 12t 1...Qa8+ 2. f3 Qd8 3. Rd2 Qe7 4. d8=Q Re2+ 5.
Rxe2 Qxd8 6. Qc5 h5 7. Re7+ Kg8 8. gxh5 Qd2+ 9.
Kh3 a4 {-420}
161499589 3:52.4 -4.12 12. 1...Qa8+ 2. f3 Qd8 3. Rd2 Qe7 4. d8=Q Re2+ 5.
Rxe2 Qxd8 6. Qc5 h5 7. Re7+ Kg8 8. gxh5 Qd2+ 9.
Kh3 a4 {-420}
498006659 12:17.0 -4.32 13t 1...Qa8+ 2. f3 Qd8 3. Rd2 Qe7 4. d8=Q Re2+ 5.
Rxe2 Qxd8 6. Qc5 Kh6 7. Ra2 b3 8. Qe3+ Kg7 9.
Qa7+ Kg8 10. Rxa5H {HT} {-420}
607602239 15:01.4 -4.32 13. 1...Qa8+ 2. f3 Qd8 3. Rd2 Qe7 4. d8=Q Re2+ 5.
Rxe2 Qxd8 6. Qc5 Kh6 7. Ra2 b3 8. Qe3+ Kg7 9.
Qa7+ Kg8 10. Rxa5 {HT} {-420}
2114193881 53:10.6 -4.35 14t 1...Qa8+ 2. f3 Qd8 3. Rd2 Qb6 4. d8=Q Re2+ 5.
Rxe2 Qxd8 6. Rd2H Qe7H 7. Rd5H Qf7H {HT} {-340}
2467225974 1:01:57 -4.35 14. 1...Qa8+ 2. f3 Qd8 3. Rd2 Qb6 4. d8=Q Re2+ 5.
Rxe2 Qxd8 6. Rd2 Qe7 7. Rd5 Qf7 {HT} {-340}
Regards,
Dieter
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