Author: Andrew Williams
Date: 09:32:35 03/31/02
Go up one level in this thread
On March 31, 2002 at 12:05:27, Art Basham wrote:
>White wins... 1. Bd6, not BxR...!!
>
>[D]r4rk1/5p2/p1b1pQpq/8/1B2P3/2NR4/PPP3PP/1K6 w - -
>
>Gambit Tiger 2.0 takes 9 ply to find it...etc.
>
>The move actually played here by the human GM was Nd5..???
>but i like the computor's move better...Bd6..!!
PM takes 6 seconds to see this on my Athlon 1200, but on reflection it
prefers Ne2:
Allocating Hash Tables:
TTSIZE=1048576 ASTTSIZE=2097152 PAWNTTSIZE=524288
Found 5-men endgame table bases.
COMPLETELY CLEARING HASH TABLES
8 r . . . . r k .
7 . . . . . o . .
6 o . b . o Q o q
5 . . . . . . . .
4 . B . . P . . .
3 . . N R . . . .
2 P P P . . . P P
1 . K . . . . . .
a b c d e f g h
1> 208 0 5 1.Bxf8
1= 295 0 66 1.Bxf8 Kxf8
2> 295 0 71 1.Bxf8 Kxf8
2= 295 0 127 1.Bxf8 Kxf8
3> 295 0 134 1.Bxf8 Kxf8
3b 296 0 366 1.Rh3
3= 296 0 606 1.Rh3
4> 296 0 1149 1.Bxf8 Kxf8 2.h3
4= 304 0 2068 1.Bxf8 Kxf8 2.Rf3
5> 284 0 5927 1.Bxf8 Rxf8 2.Rh3 Qd2
5= 291 0 7738 1.Bxf8 Rxf8 2.Rh3 Qd2
6> 291 0 9572 1.Bxf8 Rxf8 2.Rh3 Qd2 3.g4
6= 301 0 19926 1.Bxf8 Rxf8 2.h4 Qg7 3.Qe7
7> 281 0 63669 1.Bxf8 Rxf8 2.h4 Qg7 3.Qxg7 Kxg7 4.Rd6 Rc8
5.b4
7= 290 0 83635 1.Bxf8 Rxf8 2.h4 Qg7 3.Qxg7 Kxg7 4.b4 f5
5.exf5 Rxf5
8> 290 0 101148 1.Bxf8 Rxf8 2.Qe5 Qg7 3.Qd6 Rc8 4.b4
8= 295 1 237443 1.Bxf8 Rxf8 2.Qe5 Qg7 3.Qc7 Bb5 4.Rf3
9> 288 3 556950 1.Bxf8 Rxf8 2.Qe5 Rc8 3.b4 Qg7 4.Qxg7 Kxg7
5.Kb2 f5 6.exf5 exf5
9= 288 3 664754 1.Bxf8 Rxf8 2.Qe5 Rc8 3.b4 Qg7 4.Qxg7 Kxg7
5.Kb2 f5 6.exf5 exf5
10> 288 3 754773 1.Bxf8 Rxf8 2.Qe5 Rc8 3.g4 Qg7 4.Qa5 Ra8 5.b4
10b 293 6 1201211 1.Bd6 Qg7 2.Be5 Qxf6 3.Bxf6
10= 364 10 1910004 1.Bd6 Rad8 2.Rh3 Qxh3 3.Bxf8 Qxc3 4.bxc3 Rxf8
5.Qd4 Rb8 6.Kc1
11> 357 20 3799925 1.Bd6 Rad8 2.Rh3 Qxh3 3.Bxf8 Qxc3 4.bxc3 Rd1
5.Kb2 Kxf8 6.Qf3 Rd2
11= 362 20 3941645 1.Bd6 Rad8 2.Rh3 Qxh3 3.Bxf8 Qxc3 4.bxc3 Rd1
5.Kb2 Kxf8 6.Qf3 Rd2
12> 362 56 9989523 1.Ne2
12= 410 71 12758595 1.Ne2 Bxe4 2.Rh3 Bxc2 3.Kxc2 Qg7 4.Qxg7 Kxg7
5.Bxf8 Rxf8 6.Rc3 Kf6 7.a4 Rd8 8.Rf3
13> 410 81 14501850 1.Ne2 Bxe4 2.Rh3 Bxc2 3.Kxc2 Qg7 4.Qxg7 Kxg7
5.Bxf8 Rxf8 6.Rc3 Rh8 7.h3 Rd8 8.Rd3 Rd5 9.Rxd5
13= 421 183 31534964 1.Ne2 Bxe4 2.Rh3 Bxc2 3.Kxc2 Qg7 4.Qxg7 Kxg7
5.Bxf8 Rxf8 6.Nc3 Rc8 7.b4 Rc4 8.Kb3 Rg4 9.g3
14> 421 218 37239003 1.Ne2 Bxe4 2.Rh3 Bxc2 3.Kxc2 Qg7 4.Bc3 e5
5.Bxe5
14= 443 578 94162255 1.Ne2 Bxe4 2.Rh3 Bxc2 3.Kxc2 Rfc8 4.Bc3 Rxc3
5.Nxc3 Qg7 6.Qe7 Qf8 7.Qxf8
15> 443 655 106285659 1.Ne2 Bxe4 2.Rh3 Bxc2 3.Kxc2 Rfc8 4.Bc3 Rxc3
5.Nxc3 Qg7 6.Qe7 Qf8 7.Qxf8
NODES per second 159300
NODES: ab: 71973277 q: 71399267 tot: 143372544
TT PERFORMANCE
probes: 193677975 hits: 25371357 cutoffs: 18512492
secondary: 1379507 entries: 60526567 replacements: 2459565
too far: 24289 (0%)
probes: 15% hits: 13% cutoffs: 72% secondary: 5%
NULL MOVE: attempts: 34617236 cutoffs: 29511978 (85%)
CUTOFFS: first move: 21966842 later: 2014969 (91%)
PAWN TT: probes: 175772843 hits: 167497312 (21%)
EXTENSIONS: checks: 8153831 srtc: 1851424 recaptures: 432221 pushes:
353739 promotes: 0 mate: 363870 null: 0
DEPTHS: main: 54 qsearch: 54
QPRUNING: would have pruned: 0 pruned move best: 0 0.00 %
EGTB: probes: 0 hits: 0 (hit-rate: 0%)
r4rk1/5p2/p1b1pQpq/8/1B2P3/2NR4/PPP3PP/1K6 w - - acd 14; acn 143372544; acs
900; ce 448; fmvn 1; hmvc 0; id "Bd6.epd.0001"; pm Ne2 ; pv 1.Ne2 Bxe4 2.Rh3
Bxc2 3.Kxc2 Rfc8 4.Bc3 Rxc3 5.Nxc3 Qg7 6.Qe7 Qf8 7.Qb7 ;
Andrew
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