Author: Heiner Marxen
Date: 11:03:11 04/19/03
Go up one level in this thread
On April 17, 2003 at 13:56:12, Dieter Buerssner wrote:
>On April 17, 2003 at 13:02:01, Drexel,Michael wrote:
>
>> 8/8/8/8/8/3Q4/pp1KPPP1/k6n w - - 0 1
>>
>>White to move and mate in 21
>
>I disagree with the subject :-) Yace Paderborn, P4 2.53 GHz, 300 MB hash:
>
>[nodes time score depth]
> 112093397 1:55.5 7.54 18. 1. Qd4 Kb1 2. Qe4+ Ka1 3. Qe5 Kb1 4. Qf5+ Ka1
> 5. Qf6 Kb1 6. Qg6+ Ka1 7. Qg7 Ng3 8. fxg3 Kb1
> 9. Qg6+ Ka1 10. Qg7 Kb1 11. Qg6+ Ka1 12. Qg7
> {1081}
> 113036366 1:56.3 8.28 19++ 1. Qd4 Kb1 2. Qe4+ Ka1 3. Qe5 Kb1 4. Qf5+ Ka1
> 5. Qf6 Kb1 6. Qg6+ Ka1H 7. Qg7H Ng3H 8. fxg3H
> Kb1H 9. Qg6+H Ka1H 10. Qg7H Kb1H 11. Qg6+H Ka1H
> 12. Qg7HR {1081}
> 113036610 1:56.3 Mat21 19++ 1. Qd4 Kb1 2. Qe4+ Ka1H 3. Qe5H Kb1H 4. Qf5+H
> Ka1H 5. Qf6H Kb1H 6. Qg6+H Ka1H 7. Qg7H Kb1H 8.
> Qh7+H Ka1H 9. Qh8H Nxf2H 10. Kc2H Nd1H 11. Kb3H
> Kb1H 12. Qh7+H Ka1H 13. Qg7H Kb1H 14. Qg6+H
> Ka1H 15. Qf6H Kb1H 16. Qf5+H Ka1H 17. Qe5H Kb1H
> 18. Qe4+H Ka1H 19. Qd4H Nc3H 20. Qxc3H {HT}
> {1001}
> 388090526 5:45.3 Mat21 19t 1. Qd4 Kb1 2. Qe4+ Ka1 3. Qe5 Kb1 4. Qf5+ Ka1
> 5. Qf6 Kb1 6. Qg6+ Ka1 7. Qg7 Kb1 8. Qh7+ Ka1
> 9. Qh8 Nxf2 10. Kc2 Nd1 11. Kb3 Kb1 12. Qh7+
> Ka1 13. Qg7 Kb1 14. Qg6+ Ka1 15. Qf6 Kb1 16.
> Qf5+ Ka1H 17. Qe5H {HT} {661}
> 414124889 6:13.5 Mat21 19. 1. Qd4 Kb1 2. Qe4+ Ka1 3. Qe5 Kb1 4. Qf5+ Ka1
> 5. Qf6 Kb1 6. Qg6+ Ka1 7. Qg7 Kb1 8. Qh7+ Ka1
> 9. Qh8 Nxf2 10. Kc2 Nd1 11. Kb3 Kb1 12. Qh7+
> Ka1 13. Qg7 Kb1 14. Qg6+ Ka1 15. Qf6 Kb1 16.
> Qf5+ Ka1 17. Qe5 {HT} {661}
>
>Not the whole main line is shown, due to hash tables.
>
>Regards,
>Dieter
I tried Chest with it, but it appears to be completely out of range for Chest.
After seeing:
FEN: 8/8/8/8/8/3Q4/pp1KPPP1/k6n w - -
analysing (mate in 21 moves):
# 1 0.00s 0kN 0.87 1- 0
# 2 0.00s 0kN 1.00 1- 0
# 3 0.00s 1kN [ 10.59] 0.97 36- 0
% EGTB found tables for max 5 pieces
% EGTB uses 3728.4K memory internally
# 4 0.06s 5kN [ 9.74] 1.37 664- 0
# 5 0.16s [ 2.67] 30kN [ 5.66] 1.94 3417- 0
# 6 0.69s [ 4.31] 173kN [ 5.79] 2.50 17304- 0
# 7 3.20s [ 4.64] 775kN [ 4.49] 3.12 82727- 0
# 8 12.04s [ 3.76] 2789kN [ 3.60] 3.92 300494- 0
# 9 43.50s [ 3.61] 9463kN [ 3.39] 4.94 1052583- 354
# 10 183.04s [ 4.21] 36857kN [ 3.90] 5.35 4136052- 1029999
# 11 1011.99s [ 5.53] 194331kN [ 5.27] 4.78 22530829- 19331596
# 12 7219.60s [ 7.13] 1354623kN [ 6.97] 4.67 157277507- 154078274
# 13 76711.02s [ 10.63] 9846070kN [ 7.27] 4.51 1665461526-1662262293
I stopped it. (Athlon 1500+, 128MB hash, 30 MB egtb-cache, some 5-piece
tables).
Congrats for Yace!
Cheers,
Heiner
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