Author: Mike Byrne
Date: 17:57:51 11/10/04
Go up one level in this thread
On November 10, 2004 at 18:39:05, Jaime Benito de Valle Ruiz wrote:
>On November 10, 2004 at 17:45:33, Mike Byrne wrote:
>
>I might be wrong, but... the predicted sequence doesn't look right:
>
>21-> 2:49 4.70 1. Kf1 Kd1 2. Kg1 Kc1 3. Kh2 Kd1 4.
>> Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 7. Kh5
>> Kd3 8. Kg6 Kxc3 9. Kh7 Rxg7+ 10. Kxg7
>> Kb3 11. Rg6 c3 12. Rc6 c4 (s=5)
>
>This is the final position, and it doesn't seem to be worth 4.70:
>[d]8/6K1/2R5/8/2p5/1kp5/8/8 w - - 0 13
>
You are correct (and I had not examined the line provided
closely )
White(1): [d]6r1/33P1/8/2p5/2p5/2P5/6R1/2k1K3 w
white black
1. Kf1 Kd1
2. Kg1 Ke1
3. Kh2! Kf1
This is the critical position:
[d]6r1/33P1/8/2p5/2p5/2P5/6RK/5k2 w
Here 4.Kh1!! must be played
depth time score variation (1)
15-> 0.12 4.71 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 <HT>
16 0.12 4.71 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 <HT>
16-> 0.25 4.71 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 <HT>
17 0.25 4.71 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 <HT>
17-> 0.83 4.71 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 <HT>
(s=10)
18 0.84 4.71 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 <HT>
(s=9)
18-> 2.93 4.71 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 <HT>
(s=9)
19 9.95 4.77 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 7.
Kh5 Kd2 8. Rg3 Rxg7 9. Rxg7 Kxc3 <HT>
(s=8)
19-> 24.48 4.77 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 7.
Kh5 Kd2 8. Rg3 Rxg7 9. Rxg7 Kxc3 <HT>
(s=2)
20 53.56 -1 4. Kh3
20 1:35 3.08 4. Kh3 Ke1 5. Kh4 Kf1 6. Rg5 Ke2 7.
Rg6 Kd3 8. Rg3+ Kc2 9. Kh5 Rxg7 10.
Rxg7 Kxc3 11. Kg5 Kd3 12. Rd7+ Ke2
13. Rc7 c3 14. Rxc5 Kd3 15. Rd5+ Ke3
16. Re5+ Kd2 17. Re4 c2 18. Rd4+ Kc3
20 2:23 4.34 4. Kh1 Ke1 5. Kg1 Kd1 6. Kf1 Kc1 7.
Ke1 Kb1 8. Kd1 Rd8+ 9. Ke2 Re8+ 10.
Kf3 Rg8 11. Ke4 Ka1 12. Kd5 Kb1 13.
Kxc4 Kc1 14. Kxc5 Kb1
20-> 2:23 4.34 4. Kh1 Ke1 5. Kg1 Kd1 6. Kf1 Kc1 7.
Ke1 Kb1 8. Kd1 Rd8+ 9. Ke2 Re8+ 10.
Kf3 Rg8 11. Ke4 Ka1 12. Kd5 Kb1 13.
Kxc4 Kc1 14. Kxc5 Kb1 (s=9)
21 2:25 +1 4. Kh1!!
21 2:29 4.41 4. Kh1 Ke1 5. Kg1 Kd1 6. Kf1 Kc1 7.
Ke1 Kb1 8. Kd1 Rd8+ 9. Ke2 Re8+ 10.
Kf3 Rg8 11. Ke4 Ka1 12. Kd5 Kb1 <HT>
(s=8)
time=3:00 cpu=195% mat=0 n=290884406 fh=96% nps=1.62M
ext-> chk=17722603 cap=108994 pp=17974860 1rep=99602 mate=17448
predicted=0 nodes=290884406 evals=33517189 50move=6
endgame tablebase-> probes=0 hits=0
SMP-> split=8647 stop=449 data=7/128 cpu=5:52 elap=3:00
White(4): Kh1
time used: 3:00
then after
white black
4. ... Ke1
5. Kg1 Kd1
6. Kf1 Kc1
7. Ke1 ...
we have this position (same position as above but black to move!)
[d]6r1/33P1/8/2p5/2p5/2P5/6R1/2k1K3 b
this a clear and decisive win for white!
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