Author: Dieter Buerssner
Date: 10:43:00 01/19/01
Go up one level in this thread
On January 19, 2001 at 12:55:11, Uri Blass wrote:
>>>8/8/p1r5/6k1/KP6/8/8/5R2 b - - 0 1
[...]
>>After 1...Rb6 it finds also a shorter mate:
>>
>> 19213357 8:50.2 Mat44 19t 2.Rf3 Kg4 3.Rf2 Kg5 4.Rf1 Kg6
>
>The game move was 4...Kg4 instead of 4...Kg6 and I guess there should be mate in
>at most 41 after 4...Kg4
After 4...Kg4 Yace first finds a mate in 40
632382 17.283 Mat40 13t 5.Rb1 Rb5 6.Rc1 Rb6 7.Rc4+ Kf5 8.Ka5 Rd6 9.Rc7
Ke6 10.Ra7 Rd4 11.Rb7 Rd3 12.Kxa6 {EGTB}
12...Ra3+ 13.Kb6! Rb3 14.b5! Kd6! 15.Rf7 Rb4
16.Rf3 Kd7 17.Rc3! Rb2 18.Ka6! Rd2 19.b6 Ra2+!
20.Kb7! Rb2! 21.Rd3+ Ke7 22.Rd4 Ke6! 23.Kc6!
Rc2+! 24.Kb5! Rg2 25.b7! Rg8! {Not all
positions found in TB} {80}
and soon a mate in 39
779677 21.377 Mat39 14t 5.Rb1 Rb5 6.Rc1 Rb6 7.Rc5 Rf6 8.Ka5 Kf4 9.Rc7
Ke4 10.Ra7 Rf5+ 11.Kxa6 {EGTB} 11...Rf6+!
12.Ka5! Kd5! 13.b5 Rf2 14.b6 Ra2+! 15.Kb5!
Rb2+! 16.Ka6! Rf2 17.Rc7 Ra2+! 18.Kb7! Rb2!
19.Rc6 Rf2 20.Rc3 Kd6! 21.Kb8! Rf8+ 22.Ka7! Rf4
23.Ra3! Rf7+ 24.b7! Kc6! 25.Rb3 Kc5 26.Rb6 Rg7
27.Ka6! Rg8 {Not all positions found in TB} {80}
Within 6:30 minutes, after which depth 21 is finished, no shorter mate is
found. I of course hope, that the mates are correct. I'd be very interested
if somebody could check them.
Regards,
Dieter
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