Author: Tim Foden
Date: 07:36:40 09/21/03
Go up one level in this thread
On September 21, 2003 at 04:59:46, Sune Fischer wrote:
>On September 21, 2003 at 01:00:37, Paul Byrne wrote:
>
>I tried a different, even faster position, looks like it's a big zugzwang!
>
>[D]8/8/pppppppp/8/8/PPPPPPPP/8/8 w - -
>1 0 1 1 1.a4
>2 0 1 17 1.a4 a5
>3 0 1 58 1.a4 b5 2.axb5
>4 0 1 235 1.a4 b5 2.c4 bxa4
>5 0 1 574 1.a4 b5 2.c4 h5 3.axb5
>6 0 1 1609 1.a4 b5 2.c4 h5 3.h4 bxa4
>7 0 2 3481 1.a4 b5 2.c4 h5 3.h4 e5 4.axb5
>8 0 2 8625 1.a4 b5 2.c4 h5 3.h4 e5 4.axb5 cxb5
>9 0 4 18592 1.a4 b5 2.c4 h5 3.h4 e5 4.b4 d5 5.axb5
>10 0 5 43157 1.a4 b5 2.c4 h5 3.h4 c5 4.f4 a5 5.e4 bxa4
>11 0 10 98442 1.a4 b5 2.c4 h5 3.h4 c5 4.b4 d5 5.e4 dxe4 6.dxe4
>12 0 33 391079 1.a4 b5 2.c4 h5 3.f4 c5 4.h4 a5 5.d4 f5 6.b4 bxa4
>13 0 73 851266 1.a4 b5 2.c4 h5 3.f4 c5 4.e4 b4 5.d4 e5 6.g4 a5 7.dxe5
>14 -100 251 2929213 1.a4 a5 2.e4 e5 3.d4 d5 4.b4 c5 5.f4 f5 6.c4 h5 7.g4
>15 100 1499 17292060 1.a4 h5 2.h4 b5 3.e4 d5 4.b4 g5 5.g4 f5 6.f4
>16 -100 1976 22723174 1.a4 a5 2.h4 h5 3.c4 f5 4.b4 b5 5.d4 g5 6.f4 d5 7.g4 c5
>8.e4
>17 0 2655 30378376 1.a4 h5 2.h4 a5 3.f4 e5 4.c4 f5 5.d4 b5 6.g4 g5 7.b4
>18 -299982 5394 62233614 1.a4 h5 2.h4 a5 3.c4 c5 4.f4 e5 5.e4 f5 6.d4
>19 -299982 18708 244756665 1.a4 h5 2.h4 a5 3.c4 e5 4.d4 d5 5.f4 g5 6.e4 f5 7.g4
>20 -299982 32140 429458855 1.a4 h5 2.h4 a5 3.c4 e5 4.e4 d5 5.f4 c5 6.g4 b5 7.d4
>g5 8.b4 f5 9.axb5
>21 -299982 45633 614250543 1.a4 h5 2.h4 a5 3.c4 e5 4.e4 d5 5.f4 c5 6.d4 f5 7.g4
>22 -299982 59388 802228766 1.a4 h5 2.h4 a5 3.c4 e5 4.e4 d5 5.f4 c5 6.d4 f5 7.g4
>23 -299982 72952 987563406 1.a4 h5 2.h4 a5 3.c4 e5 4.e4 d5 5.f4 c5 6.d4 f5 7.g4
>24 -299982 86610 1173582223 1.a4 h5 2.h4 a5 3.c4 e5 4.e4 d5 5.f4 c5 6.d4 f5 7.g4
>
>I'm not fond of those eval swings in the middle, but my qsearch had to suffer
>some simplification, and this being a pure bean counter eval might produce such
>instability.
>
>Perhaps you can confirm it?
>It's quite fast this one.
As others have pointed out... maybe you have a bug.
GLC may also have a bug... but it thinks this one is a draw...
Cheers, Tim.
>fen 8/8/pppppppp/8/8/PPPPPPPP/8/8 w
abcdefgh White to play
+--------+
8|░ ░ ░ ░ |8 ---- ------- -------
7| ░ ░ ░ ░|7
6|pppppppp|6
5| ░ ░ ░ ░|5
4|░ ░ ░ ░ |4
3|PPPPPPPP|3
2|░ ░ ░ ░ |2
1| ░ ░ ░ ░|1
+--------+
abcdefgh
>hash 48
Hash table size set to: 48.0MB
>anal
Game stage: Endgame
Current eval: 0.000
Ply Time Score Nodes Principal variation
7 0.020 +0.050 12684 a4 h5 2. b4 g5 3. c4 f5 4. h4
7 0.020 +0.050 14502 a4 h5 2. b4 g5 3. c4 f5 4. h4
8 0.030 +0.000 22679 a4 h5 2. b4 g5 3. c4 f5 4. h4 c5
8 0.040 +0.000 34323 a4 h5 2. b4 g5 3. c4 f5 4. h4 c5
9 0.050 +0.050 47039 a4 h5 2. b4 g5 3. c4 f5 4. g4 fxg4 5. hxg4 h4
9 0.060 +0.050 53548 a4 h5 2. b4 g5 3. c4 f5 4. g4 fxg4 5. hxg4 h4
10 0.120 +0.000 111129 a4 h5 2. b4 g5 3. c4 f5 4. g4 h4 5. gxf5 exf5 6.
d4
10 0.230 +0.000 215100 a4 h5 2. b4 g5 3. c4 f5 4. g4 h4 5. gxf5 exf5 6.
d4
11 0.511 +0.050 487820 a4 h5 2. b4 g5 3. h4 gxh4 4. gxh4 c5 5. d4 a5 6.
dxc5 dxc5 7. b5
11 0.561 +0.050 533762 a4 h5 2. b4 g5 3. h4 gxh4 4. gxh4 c5 5. d4 a5 6.
dxc5 dxc5 7. b5
12 0.791 +0.000 745253 a4 h5 2. b4 g5 3. h4 c5 4. hxg5 fxg5 5. d4 cxb4 6.
cxb4 a5 7. bxa5 bxa5 8. e4
12 1.021 +0.000 965570 a4 h5 2. b4 g5 3. h4 c5 4. hxg5 fxg5 5. d4 cxb4 6.
cxb4 a5 7. bxa5 bxa5 8. e4
13 1.943 +0.050 1831973 a4 h5 2. b4 g5 3. c4 f5 4. g4 hxg4 5. hxg4 fxg4 6.
fxg4 c5 7. bxc5 dxc5 8. e4 a5
13 2.153 +0.050 2037207 a4 h5 2. b4 g5 3. c4 f5 4. g4 hxg4 5. hxg4 fxg4 6.
fxg4 c5 7. bxc5 dxc5 8. e4 a5
14 2.854 +0.000 2694208 a4 h5 2. b4 g5 3. c4 f5 4. g4 fxg4 5. hxg4 h4 6.
d4 c5 7. dxc5 dxc5 8. bxc5 bxc5 9. e4
14 3.645 +0.000 3437227 a4 h5 2. b4 g5 3. c4 f5 4. g4 fxg4 5. hxg4 h4 6.
d4 c5 7. dxc5 dxc5 8. bxc5 bxc5 9. e4
15 5.458 +0.050 5123217 a4 h5 2. b4 g5 3. c4 f5 4. h4 gxh4 5. gxh4 c5 6.
bxc5 bxc5 7. f4 a5 8. d4 cxd4 9. exd4 d5
15 6.359 +0.050 5942582 a4 h5 2. b4 g5 3. c4 f5 4. h4 gxh4 5. gxh4 c5 6.
bxc5 bxc5 7. f4 a5 8. d4 cxd4 9. exd4 d5
16 11.737 +0.000 11000k a4 f5 2. b4 a5 3. bxa5 bxa5 4. d4 c5 5. dxc5 dxc5
6. h4 e5 7. e4 h5 8. c4 f4 9. gxf4 exf4 10. e5
16 15.081 +0.000 14195k a4 f5 2. b4 a5 3. bxa5 bxa5 4. d4 c5 5. dxc5 dxc5
6. h4 e5 7. e4 h5 8. c4 f4 9. gxf4 exf4 10. e5
17 22.532 +0.000 21498k a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
bxa5 bxa5
17 24.926 +0.000 23833k a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
bxa5 bxa5
18 29.422 +0.000 28246k a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
bxa5 bxa5
18 32.627 +0.000 31427k a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
bxa5 bxa5
19 39.677 +0.000 38435k a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
bxa5 bxa5
19 43.542 +0.000 42211k a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
bxa5 bxa5
20 53.136 +0.000 52064k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 f5 7. e4 c5 8. exf5 exf5 9. d4 cxb4 10.
cxb4 d5
20 58.424 +0.000 57525k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 f5 7. e4 c5 8. exf5 exf5 9. d4 cxb4 10.
cxb4 d5
21 1:11.37 +0.000 71193k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
d4 d5
21 1:25.44 +0.000 86243k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
d4 d5
22 1:40.17 +0.000 102444k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
d4 d5
22 1:50.78 +0.000 113744k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
d4 d5
23 2:09.01 +0.000 133539k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
d4 d5
23 2:18.89 +0.000 144727k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
d4 d5
24 2:35.21 +0.000 163889k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
d4 d5
24 2:45.86 +0.000 176177k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
d4 d5
25 3:03.07 +0.000 197208k a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
d4 d5
Analyse>exit
local: t=3:09.12 nps=1082051.0 n=204639647 (80.5% / 19.5%)
total: t=3:09.12 nps=1082051.0 n=204639647
stats: fh=87.2%/8.70%/2.881% draws=44690
trans: probes=143474007 hits=41211377 (28.72%) draft=30292904 (21.11%)
tcuts: exact=616 (0.00%) upper=17237149 (12.01%) lower=11185277 (7.80%)
tstor: exact=1068 (0.00%) upper=80360157 (69.85%) lower=34689716 (30.15%)
ext: check=0 recap=10795604 ppush=20398334 1rep=0 thrt=0
q-moves: gen=4910781 tested=4336036 made/un=964754 max-dep=8
max eval diff: part-1=15.650 part-2=0.000
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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