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Subject: Re: Two Test Positions = Queen and Pawn Endings

Author: Vincent Lejeune

Date: 00:05:02 05/01/04

Go up one level in this thread


On April 30, 2004 at 23:43:48, Robert Hyatt wrote:

>On April 30, 2004 at 17:21:34, José Antônio Fabiano Mendes wrote:
>
>> [D]7k/6p1/2P3Qp/p3q2P/8/6P1/5K2/8 w
>> Bogoljubow vs Stahlberg, Kemeri 1933  1. Qc2!! Qxh5 2. Qc4!
>
>This one takes crafty depth=16, not real quick.  Almost 4 minutes to pick Qc2,
>several more to see how good it really is...

May be you should go a bit deeper to let Crafty see how this position is draw ;)

after 1. Qc2 Qxh5 2. Qc4 Qf5+
[d]7k/6p1/2P4p/p4q2/2Q5/6P1/5K2/8 w - - 0 1
Analysis by Crafty 19.12:
...
3.Re3 Dc8 4.Rf3 Dd8 5.De4 Df6+ 6.Re3 Dd6 7.Rf3 Dd8
  =  (-0.01)   Profondeur: 11/25   00:00:05  4336kN, tb=2
3.Re3 Dc8 4.Rd4 a4 5.Rc3 Dc7 6.g4 Da5+ 7.Db4 Da8 8.Db7 Da5+ 9.Db4
  =  (0.00)   Profondeur: 12/27   00:00:14  12753kN, tb=69
3.Re3 De5+ 4.Rf3 Df5+ 5.Re3
  =  (0.00)   Profondeur: 13/30   00:00:42  37096kN, tb=160
3.Rg2
  ²  (0.40)   Profondeur: 13/30   00:00:54  48595kN, tb=315
3.Rg2
  ±  (1.40)   Profondeur: 13/30   00:00:57  52105kN, tb=428
3.Rg2 Dg5 4.c7 Dd2+ 5.Rf3 Dd1+ 6.Re3 De1+ 7.Rf4 Dd2+ 8.Re5 Db2+ 9.Rd6 Db6+
10.Rd7
  +-  (2.75)   Profondeur: 13/30   00:01:03  57734kN, tb=490
3.Rg2 Dg5 4.c7 Dd2+ 5.Rf3 Dd1+ 6.Re3 De1+ 7.Rf4 Dd2+ 8.Re5 Db2+ 9.Rd6 Db6+
10.Rd7 Da7 11.Dc3 Db7 12.Dxa5 Rh7 13.Dh5
  +-  (2.95)   Profondeur: 14/34   00:01:07  61897kN, tb=607
3.Rg2 Dg5 4.c7 Dd2+ 5.Rf3 Dd1+ 6.Re3 De1+ 7.Rf4 Dd2+ 8.Re5 Db2+ 9.Rd6 Db6+
10.Rd7 Da7 11.Dc3 Db7 12.Dxa5 Rh7 13.Dh5
  +-  (3.35)   Profondeur: 15/36   00:01:19  72676kN, tb=821
3.Rg2 a4 4.c7 Dc8 5.Dc6 a3 6.Db6 Dg4 7.Df2 a2 8.Dxa2 De4+ 9.Rh2 De8 10.Dd5 De2+
11.Rh3 Df1+ 12.Rg4 Df8 13.Df5
  +-  (2.04)   Profondeur: 16/38   00:03:58  213394kN, tb=3455
3.Rg2 Dc8 4.c7 a4
  =  (0.00)   Profondeur: 17/40   00:11:02  531031kN, tb=21592


>
>
>
>
>               14    31.80   0.27   1. Kg2 Qe2+ 2. Kh3 Qf3 3. Kh4 a4 4.
>                                    Qc2 Qf6+ 5. Kh3 Qe6+ 6. Kg2 Qd5+ 7.
>                                    Kf2 Qf7+ 8. Ke3 Qe7+ 9. Kd4 Qd6+ 10.
>                                    Ke4 Qe6+ 11. Kf4 a3
>               14->  48.91   0.27   1. Kg2 Qe2+ 2. Kh3 Qf3 3. Kh4 a4 4.
>                                    Qc2 Qf6+ 5. Kh3 Qe6+ 6. Kg2 Qd5+ 7.
>                                    Kf2 Qf7+ 8. Ke3 Qe7+ 9. Kd4 Qd6+ 10.
>                                    Ke4 Qe6+ 11. Kf4 a3 (s=5)
>               15    53.12   0.01   1. Kg2 Qe2+ 2. Kh3 Qf3 3. Kh4 Qd5 4.
>                                    Kg4 a4 5. c7 Qc4+ 6. Kf5 Qxc7 7. Qe8+
>                                    Kh7 8. Qg6+ Kg8 9. Qe8+ Kh7 (s=4)
>               15->   2:45   0.01   1. Kg2 Qe2+ 2. Kh3 Qf3 3. Kh4 Qd5 4.
>                                    Kg4 a4 5. c7 Qc4+ 6. Kf5 Qxc7 7. Qe8+
>                                    Kh7 8. Qg6+ Kg8 9. Qe8+ Kh7 (s=8)
>               16     2:49   0.01   1. Kg2 Qe2+ 2. Kh3 Qf3 3. Kh4 Qd5 4.
>                                    Kg4 a4 5. c7 Qc4+ 6. Kf5 Qxc7 7. Qe8+
>                                    Kh7 8. Qg6+ Kg8 9. Qe8+ Kh7 (s=7)
>               16     3:52     +1   1. Qc2!!
>               16     4:19   0.38   1. Qc2 Qxh5 2. Qc4 Qh2+ 3. Kf3 Qh1+
>                                    4. Kf4 Qh5 5. c7 Qg5+ 6. Ke4 Qg4+ 7.
>                                    Kd5 Qd7+ 8. Ke5 Qe7+ 9. Kf5 Qf8+ 10.
>                                    Ke4 Qc8 11. Ke5 a4 12. Kd4 <HT> (s=6)
>               16->   4:55   0.38   1. Qc2 Qxh5 2. Qc4 Qh2+ 3. Kf3 Qh1+
>                                    4. Kf4 Qh5 5. c7 Qg5+ 6. Ke4 Qg4+ 7.
>                                    Kd5 Qd7+ 8. Ke5 Qe7+ 9. Kf5 Qf8+ 10.
>                                    Ke4 Qc8 11. Ke5 a4 12. Kd4 <HT> (s=2)
>               17     6:54     +1   1. Qc2!!
>               17    10:07   1.10   1. Qc2 Qxh5 2. Qc4 a4 3. c7 Qf5+ 4.
>                                    Ke3 Qc8 5. Kd4 Kh7 6. Kc3 Kh8 7. g4
>                                    a3 8. Kb3 Kh7 9. Qd3+ g6 10. Qd8 a2
>                                    11. Qxc8 a1=Q
>



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