Author: Dieter Buerssner
Date: 02:38:05 12/25/01
Go up one level in this thread
On December 24, 2001 at 10:21:17, Jim Monaghan wrote:
>>I tried 2 things. First I let the K go to g6 without any resistance (2...Kf8
>>instead of Kf7). I tried the following line:
>
>>[FEN "8/4bkp1/5p1p/r1pR1P1K/1pP4P/1P2B3/5P2/8 w - -"]
>
>1. Rd7 {1:39m} Ke8 {17s} 2. Rd3 {33s} Kf8 {47s} 3. Kg6 {5s}
>Ra3 {38s} 4. Rd5 {24s} Rxb3 {11s} 5. Bxc5 {3s} Bxc5 {6s}
>6. Rxc5 {1s} Rh3 *
>
>>I cannot see how to win here. Where is my error?
>
>It's not easy, but I think the main line would go like this:
>
>7. h5 Rh4 8. f3 Rh3 9. Rc8+ Ke7 10. Rc7+ Kd6 (Going to the back rank would be
>simlilar to the game continuation.) 11. Rxg7 Rxf3 12. Kxh6 Ke5 13. Rb7 b3 14.
>Rb5+ Kd4 15. Kg6 Kxc4 16. Rb6 Rh3 17. h6 and the Black king is out of position
>for defending the k-side, White wins.
I tried out this line. Yace thinks after 12. Kxh6 it is draw:
[D] 8/6R1/3k1p1K/5P1P/1pP5/5r2/8/8 b - - 0 12
1548652 14.283 -1.04 12. 12...Ke5 13. Rb7 b3 14. Rb5+ Kd4 15. Kg6 Rg3+
16. Kxf6 Kxc4 17. Rb6 Rh3 18. Kg5 Kc5 19. Rb7
Kd6 {-80}
2061474 18.848 -0.80 13t 12...Ke5 13. Rb7 b3 14. Rb5+ Kd4 15. Kg6 Kxc4
16. Rb6 Rh3 17. Rxf6 Kc5 18. Rf7 b2 19. Rb7 Rh2
{-80}
2640308 24.549 -0.80 13. 12...Ke5 13. Rb7 b3 14. Rb5+ Kd4 15. Kg6 Kxc4
16. Rb6 Rh3 17. Rxf6 Kc5 18. Rf7 b2 19. Rb7 Rh2
{-80}
3828601 35.335 -1.08 14t 12...Ke5 13. Rb7 b3 14. Rb5+ Kd4 15. Kg6 Kxc4
16. Rb8 Rg3+ 17. Kxf6 Rh3 18. Kg5 Rg3+ 19. Kf4
{-80}
7122680 1:08.4 -1.08 14. 12...Ke5 13. Rb7 b3 14. Rb5+ Kd4 15. Kg6 Kxc4
16. Rb8 Rg3+ 17. Kxf6 Rh3 18. Kg5 Rg3+ 19. Kf4
{-80}
8854803 1:26.5 -1.22 15t 12...Ke5 13. Rb7 b3 14. Rb5+ Kd4 15. Kg6 Rg3+
16. Kxf6 Kxc4 17. Rb6H Rh3H 18. Kg5H b2H 19.
Rxb2H Kc3H 20. Re2H Rg3+H {HT} {-160}
11033470 1:49.1 -1.21 15t+ 12...b3 13. Rb7 Rg3 14. Rb5
11558207 1:55.0 -1.21 15t 12...b3 13. Rb7 Rg3 14. Rb5H Kc6H 15. Kh7H Kd6H
{HT}
15297463 2:38.3 -1.20 15t+ 12...Rxf5 13. Rb7
15725532 2:43.8 -0.68 15++ 12...Rxf5 13. Rb7
18674118 3:20.9 -0.31 15t 12...Rxf5 13. Rb7 Ke6 14. Rxb4 Rc5 15. Rb6+ Ke7
16. Rb7+ Ke6 17. Rb4 Ke7 18. Ra4 Kf7 19. Ra8
Rxc4 20. Kh7 Rh4 {HT} {0}
19727623 3:31.8 -0.31 15. 12...Rxf5 13. Rb7 Ke6 14. Rxb4 Rc5 15. Rb6+ Ke7
16. Rb7+ Ke6 17. Rb4 Ke7 18. Ra4 Kf7 19. Ra8
Rxc4 20. Kh7 Rh4 {HT} {0}
22567961 4:11.6 -0.30 16t 12...Rxf5 13. Rb7 Ke6 14. Rxb4 Rc5 15. Rb6+ Ke7
16. Rb7+ Ke6 17. Rb4 Ke7 18. Rb2 Rxc4 19. Re2+
Kf7 20. Kh7 Rh4 21. h6 {0}
26657218 4:53.5 -0.30 16. 12...Rxf5 13. Rb7 Ke6 14. Rxb4 Rc5 15. Rb6+ Ke7
16. Rb7+ Ke6 17. Rb4 Ke7 18. Rb2 Rxc4 19. Re2+
Kf7 20. Kh7 Rh4 21. h6 {0}
When I follow some moves in the line (I interchanged Ke6 and Rc5), I get draw
score. I don't want to say, that this means much.
After 12. Kxf6, everything I tried was winning for white.
But much earlier, after 7. h5:
[D] 5k2/6p1/5pKp/2R2P1P/1pP5/7r/5P2/8 b - - 0 7
I get:
467410 4.195 -0.77 10t 7...Rh4 8. f3 Rh3 9. Rc8+ Ke7 10. Rc7+ Kd6 11.
Rxg7 Rxf3 12. Kxf6 b3 13. Kg6 Kc5 14. Kxh6 Rxf5
{-80}
576709 5.037 -0.76 10t+ 7...b3 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6 11.
Kxh6 Rh1 12. Rg8 b2 13. Kg6 b1=Q 14. h6 {761}
666979 5.748 -0.74 10t 7...b3 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6 11.
Rg8H Kc7H 12. Kxf6H b2H 13. Rg1H b1=QH 14.
Rxb1H Kc8H {HT}
778543 6.601 -0.74 10. 7...b3 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6 11.
Rg8 Kc7 12. Kxf6 b2 13. Rg1 b1=Q 14. Rxb1 Kc8
1065597 8.652 -0.57 11t 7...b3 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6 11.
Rg8 Kc7 12. Re8 Rc3 13. Kxh6 b2 14. Re1 Rxc4H
15. Rb1H Rc2H {-80}
1584483 12.855 -0.56 11t+ 7...Rh1 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6
11. Rf7 b3 12. Rxf6+ Kc5 13. Kxh6 b2 14. Kh7
b1=Q 15. h6 {681}
1607290 13.042 -0.56 11t 7...Rh1 8. Rc8+ Ke7 9. Rc7+H Kd6H 10. Rxg7H
Kc6H 11. Re7H b3H 12. Re2H Kc5H 13. Kxh6H Kxc4H
14. Rb2H Rh3H {-80}
1626078 13.210 -0.56 11. 7...Rh1 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6
11. Re7 b3 12. Re2 Kc5 13. Kxh6 Kxc4 14. Rb2
Rh3 {-80}
2248307 17.740 -0.56 12t 7...Rh1 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6
11. Re7 b3 12. Re2 Kc5 13. Kxh6 Kxc4 14. Kg6
Kd3 15. Rb2 {-80}
3057215 23.925 -0.56 12. 7...Rh1 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6
11. Re7 b3 12. Re2 Kc5 13. Kxh6 Kxc4 14. Kg6
Kd3 15. Rb2 {-80}
3967977 30.771 -0.62 13t 7...Rh1 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6
11. Re7 b3 12. Re2 Kc5 13. Kxh6 Rg1 14. Rb2
Kxc4 15. f4 Rh1 {-80}
5109670 39.765 -0.62 13. 7...Rh1 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6
11. Re7 b3 12. Re2 Kc5 13. Kxh6 Rg1 14. Rb2
Kxc4 15. f4 Rh1 {-80}
8605144 1:07.3 -0.25 14t 7...Rh1 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6
11. Re7 b3 12. Re2 Kc5 13. Kxh6 Kxc4 14. Kg6
Kc3 15. Re3+ Kc2 16. Re7 b2 17. Rc7+ Kd3H {HT}
{-80}
9598948 1:15.3 -0.25 14. 7...Rh1 8. Rc8+ Ke7 9. Rc7+ Kd6 10. Rxg7 Kc6
11. Re7 b3 12. Re2 Kc5 13. Kxh6 Kxc4 14. Kg6
Kc3 15. Re3+ Kc2 16. Re7 b2 17. Rc7+ Kd3 {-80}
20056638 2:37.8 -0.11 15t 7...Rh1 8. Rd5 Rg1+ 9. Kh7 Rg4H 10. c5H Rc4H
11. c6H Rxc6H 12. Rd7H b3H 13. Rxg7H b2H 14.
Rg8+H {HT} {0}
21273683 2:47.5 -0.11 15. 7...Rh1 8. Rd5 Rg1+ 9. Kh7 Rg4 10. c5 Rc4 11.
c6 Rxc6 12. Rd7 b3 13. Rxg7 b2 14. Rg8+ {HT} {0}
35224173 4:39.6 -0.09 16t 7...Rh1 8. Rc8+ Ke7 9. Rb8 Rg1+H 10. Kh7H Rg5H
11. Rb7+H Kd6H 12. Rb5H b3H 13. Rb6+H Kc5H 14.
38451376 5:04.9 -0.09 16. 7...Rh1 8. Rc8+ Ke7 9. Rb8 Rg1+ 10. Kh7 Rg5 11.
Rb7+ Kd6 12. Rb5 b3 13. Rb6+ Kc5 14. Rxf6
And again, (you guessed it :-) after some moves I get draw score.
Cheers,
Dieter
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