Author: Dieter Buerssner
Date: 15:52:48 01/30/04
Go up one level in this thread
On January 30, 2004 at 18:35:50, Ed Trice wrote:
>Just think with the King + 2 pawn vs. King + 2 pawn 6 piece tablebased probed
>in RAM, this would be solved with a 4-ply search, maybe even sooner because of
>check/capture extensions!
But this would need over 400 MB RAM (assuming W/D/L TB, not compressed in memory
- compressed it wouldn't be that fast anymore). My estimation (without ep, also
without the Nalimov "unblockable check" trick):
1812*48*47*46*45/(4*5) bytes
I can show a result with KPPKP W/D/L in RAM (18 MB uncompressed per side):
948015 1.398 1.36 7t 46.Qd6+ Kh5 47.Qd5 Qf1+ 48.Kc2 Qe2+ 49.Kb3 Kg5
50.Ka2 Qc4+ 51.Qxc4 bxc4 {80}
981040 1.437 1.38 7t+ 46.Qf6+ Qxf6 47.exf6 a5 48.Kd4 Kf7 49.Kd5 Ke8
50.b4 axb4 {0}
981318 1.438 1.77 7++ 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 Ke6 49.Kc5 a5
50.b4 a4H {80}
982341 1.439 2.80 7++ 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 Kf8 49.Kc5 Kg8
50.Kb6 b4 51.axb4 {160}
986824 1.444 3.05 7t 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 Kf8 49.f7 a5
50.Kc5 b4H 51.axb4H {160}
1019844 1.486 3.05 7. 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 Kf8 49.f7 a5
50.Kc5 b4 51.axb4 {160}
1023957 1.510 3.47 8++ 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 Ke8 49.f7+ Kf8
50.Kc5 b4 51.Kxb4 Ke7 {160}
1029354 1.550 4.38 8t 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 a5 49.b4 a4
50.Kc5H Ke8H 51.f7+H Kf8H 52.Kxb5H {160}
1105462 1.664 4.38 8. 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 a5 49.b4 a4
50.Kc5 Ke8 51.f7+ Kf8 52.Kxb5 {160}
1117367 1.679 4.78 9++ 46.Qf6+ Qxf6 47.exf6 Kf7 48.b4 Ke8 49.Kd4 Kf7
50.Kc5 a5 51.bxa5 Ke6H {160}
1118831 1.681 5.88 9++ 46.Qf6+ Qxf6 47.exf6 Kh7 48.Kd4 b4H 49.axb4H
Kg8H 50.b5H a5H 51.f7+H Kf8H 52.b6H {160}
1143324 1.729 8.00 9t 46.Qf6+ Qxf6 47.exf6 Kh7 48.Kd4 Kh6H 49.f7H
Kg7H 50.f8=Q+H Kxf8H 51.Kc5H Kf7H 52.Kb6H Ke8H
53.Kxa6H {HT} {80}
1302017 2.013 8.00 9. 46.Qf6+ Qxf6 47.exf6 Kh7 48.Kd4 Kh6 49.f7 Kg7
50.f8=Q+ Kxf8 51.Kc5 Kf7 52.Kb6 Ke8 53.Kxa6
{HT} {80}
1338249 2.349 8.00 10t 46.Qf6+ Qxf6 47.exf6 Kf7 48.b4 Kxf6 49.Kd4H
Ke7H 50.Kc5H Ke8H 51.Kb6H a5H 52.bxa5H {HT} {80}
1742657 3.124 8.00 10. 46.Qf6+ Qxf6 47.exf6 Kf7 48.b4 Kxf6 49.Kd4 Ke7
50.Kc5 Ke8 51.Kb6 a5 52.bxa5 {HT} {80}
1756196 3.161 8.64 11++ 46.Qf6+ Qxf6 47.exf6 Kf7 48.b4 a5 49.bxa5 Ke8
50.Kd2 b4 51.axb4 Kd8 52.f7 Ke7 53.f8=Q+ Kxf8
{160}
1760123 3.165 9.64 11++ 46.Qf6+ Qxf6 47.exf6 Kf7 48.b4 a5 49.bxa5 Kf8
50.f7 b4 51.axb4 Kxf7 52.a6 Kf6 53.a7 Ke5 {160}
3111783 5.052 10.00 11t 46.Qf6+ Qxf6 47.exf6 a5 48.f7 Kxf7 49.Kd4 a4
50.Kc5 Ke8 51.Kb6H Kf8H 52.Kc5H b4H {0}
4260167 7.532 10.00 11. 46.Qf6+ Qxf6 47.exf6 a5 48.f7 Kxf7 49.Kd4 a4
50.Kc5 Ke8 51.Kb6 Kf8 52.Kc5 b4 {0}
4370797 15.589 10.00 12t 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 a5 49.Kc5 b4
50.Kb5 Ke6 51.f7 Kxf7 52.axb4 a4 53.Kb6H Ke8H
{80}
9648635 24.968 10.00 12. 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 a5 49.Kc5 b4
50.Kb5 Ke6 51.f7 Kxf7 52.axb4 a4 53.Kb6 Ke8 {80}
9759696 25.992 10.00 13t 46.Qf6+ Qxf6 47.exf6 Kf7 48.Kd4 a5 49.Kc5 b4
50.Kb5 Ke6 51.f7 Kxf7 52.axb4 a4 {INTREC}
53.Kc5 Ke8 54.b5! Ke7! 55.b6 Kd7! 56.Kd5! Kd8!
57.Kd6! Kc8! 58.Kc6! Kd8! 59.b7! Ke7! 60.b8=Q
a3! 61.Qe5+ Kf7 62.bxa3! Kg8 63.Qg5+ Kh8 64.Kd6
Kh7 65.Ke6 Kh8 66.Kf6 Kh7 67.Qg7#! {1081}
Regards,
Dieter
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