Author: Tim Foden
Date: 11:33:26 10/22/03
Go up one level in this thread
On October 22, 2003 at 10:44:36, Dieter Buerssner wrote:
>On October 22, 2003 at 06:33:41, Vladimir Medvedev wrote:
>
>>I am not sure all these tasks has unique solution (at least two of them are
>>incorrect, but I can't remember their numbers :(
>
>I included a few comments. Most positions have alternative solutions, that yield
>in longer mater.
>
>>Now much can your engine solve at 1 sec/position?
>>With/without null-move?
>
>Only tried with null move. After few corrections Yace found in 87 in 1s, 98 in 5
>s, 92 needed 8 s and 71 10 s.
Ah... it took me a while to decifer this Deiter... I couldn't figure out why
you were getting fewer solution in more time :)
in 1 second Yace found 87 solutions
in 5 seconds Yace found 98 solutions
additionally, the solution to number 92 needed 8 seconds and
the solution to number 71 needed 10 seconds.
I ran your corrected positions with GLC...
GLC didn't do anywhere near so well with null move switched on...
GLC 3.00, null on, 15s/pos, 24MB hash, AXP 2.1GHz:
Passed 68 out of 100 (0 invalid)
--------------------------------------------
Test run complete
1 0.00 *fail* 0.00 *fail* *fail* 0.00 9.40 *fail* *fail* 0.02
11 1.07 0.73 0.77 0.09 *fail* 0.22 *fail* *fail* 1.03 *fail*
21 0.17 0.16 4.26 *fail* 0.06 1.25 *fail* 3.47 *fail* 0.00
31 0.04 0.03 *fail* 0.17 0.80 *fail* 0.07 0.25 0.19 1.07
41 0.08 *fail* 0.00 0.01 0.04 0.13 0.04 *fail* 0.10 0.09
51 *fail* *fail* *fail* 0.02 *fail* 0.02 0.04 0.02 *fail* 0.00
61 0.02 0.13 0.08 0.03 0.08 0.64 *fail* *fail* *fail* 0.05
71 0.01 0.11 0.05 0.05 0.07 0.03 *fail* 0.02 0.02 0.03
81 0.00 0.03 *fail* 0.01 0.04 0.01 0.01 0.01 0.00 *fail*
91 0.00 0.00 0.01 *fail* 0.04 *fail* 1.19 *fail* *fail* *fail*
======================================================
Number of solutions found: 68/100
Average time to find solutions: 5.08692 seconds
RMS time to find solutions: 8.56005 seconds
1s: 60 +60 |################################################## (88.2%)
2s: 65 +5 |#### (7.4%)
3s: 65 +0 | (0.0%)
4s: 66 +1 |# (1.5%)
5s: 67 +1 |# (1.5%)
6s: 67 +0 | (0.0%)
7s: 67 +0 | (0.0%)
8s: 67 +0 | (0.0%)
9s: 67 +0 | (0.0%)
10s: 68 +1 |# (1.5%)
======================================================
GLC is much more successful with null move switched off...
GLC 3.00, null off, same conditions:
Passed 99 out of 100 (0 invalid)
--------------------------------------------
Test run complete
1 0.00 0.16 0.00 0.02 0.05 *fail* 0.33 0.01 5.06 0.02
11 1.05 0.73 0.75 0.09 0.02 0.23 0.13 4.47 1.01 0.23
21 0.18 0.18 3.23 0.37 0.06 1.69 0.06 3.60 1.33 0.01
31 0.04 0.03 0.10 0.13 0.35 0.12 0.06 0.16 0.15 0.02
41 0.08 0.07 0.00 0.00 0.05 0.11 0.03 0.15 0.11 0.09
51 0.01 0.07 0.14 0.03 0.04 0.01 0.04 0.01 0.02 0.00
61 0.02 0.10 0.07 0.04 0.10 0.01 0.02 0.01 0.05 0.04
71 0.01 0.11 0.05 0.06 0.07 0.03 0.00 0.01 0.00 0.01
81 0.00 0.01 0.00 0.00 0.01 0.01 0.01 0.00 0.00 0.01
91 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.01 0.00 0.01
======================================================
Number of solutions found: 99/100
Average time to find solutions: 0.432 seconds
RMS time to find solutions: 1.73964 seconds
1s: 91 +91 |################################################## (91.9%)
2s: 95 +4 |## (4.0%)
3s: 95 +0 | (0.0%)
4s: 97 +2 |# (2.0%)
5s: 98 +1 |# (1.0%)
6s: 99 +1 |# (1.0%)
======================================================
Below is the single failure... looks like Rh6 may be a shorter mate...
[d]6b1/4Kpk1/5r2/8/3B2P1/7R/8/8 w - - bm Bxf6+; id "Loyd-095; #7";
Line 006: Test [Bxf6+]...
Game stage: Endgame
Current eval: 0.209
Ply Time Score Nodes Principal variation
4 0.010 +9.621 6067 Bxf6+ Kg6 2. Rh8 Bh7 3. g5 Bg8 4. Rxg8+
5 0.010 +9.621 9616 Bxf6+ Kg6 2. Rh8 Bh7 3. g5 {ht}
5 0.020 +9.621 20935 Bxf6+ Kg6 2. Rh8 Bh7 3. g5 {ht}
6 0.020 +10.021 20964 Bxf6+ {++} Kg6 2. Rh8 Bh7 3. g5 Bg8 4. Rxg8+ Kf5
5. Kxf7
6 0.030 +Mate07 47868 Bxf6+ Kg6 2. Rh5 Bh7 3. Rg5+ Kh6 4. Kxf7 Bg6+ 5.
Rxg6+ Kh7 6. Bh4 Kh8 7. Rh6#
6 0.040 +Mate07 66201 Bxf6+ Kg6 2. Rh5 Bh7 3. Rg5+ Kh6 4. Kxf7 Bg6+ 5.
Rxg6+ Kh7 6. Bh4 Kh8 7. Rh6#
7 0.070 +Mate07 116236 Bxf6+ Kg6 2. Rh5 Bh7 3. Rg5+ Kh6 4. Kxf7 Bg6+ 5.
Rxg6+ Kh7 6. Bh4 Kh8 7. Rh6#
7 0.110 +Mate07 214398 Bxf6+ Kg6 2. Rh5 Bh7 3. Rg5+ Kh6 4. Kxf7 Bg6+ 5.
Rxg6+ Kh7 6. Bh4 Kh8 7. Rh6#
8 0.221 +Mate07 443074 Bxf6+ Kg6 2. Rh5 Bh7 3. Rg5+ Kh6 4. Kxf7 Bg6+ 5.
Rxg6+ Kh7 6. Bh4 Kh8 7. Rh6# {ht}
8 0.301 +Mate07 613115 Bxf6+ Kg6 2. Rh5 Bh7 3. Rg5+ Kh6 4. Kxf7 Bg6+ 5.
Rxg6+ Kh7 6. Bh4 Kh8 7. Rh6# {ht}
9 0.531 +Mate07 1038732 Bxf6+ Kg6 2. Rh5 Bh7 3. Rg5+ Kh6 4. Kxf7 Bg6+ 5.
Rxg6+ Kh7 6. Bh4 Kh8 7. Rh6# {ht}
9 0.821 +Mate05 1671852 Rh6 Kxh6 2. Kxf6 Kh7 3. g5 Kh8 4. g6 fxg6 5. Kxg6#
9 0.831 +Mate05 1697846 Rh6 Kxh6 2. Kxf6 Kh7 3. g5 Kh8 4. g6 fxg6 5. Kxg6#
10 0.841 +Mate05 1703572 Rh6 Kxh6 2. Kxf6 Kh7 3. g5 Kh8 4. g6 fxg6 5. Kxg6#
10 1.062 +Mate05 2220314 Rh6 Kxh6 2. Kxf6 Kh7 3. g5 Kh8 4. g6 fxg6 5. Kxg6#
local: t= 1.062 nps=2090690.6 n=2220314 (34.7% / 65.3%)
total: t=1:45.96 nps=1853825.7 n=196438775
stats: fh=99.8%/0.15%/0.038% draws=5330
trans: probes=570270 hits=413833 (72.57%) draft=269473 (47.25%)
tcuts: exact=65 (0.01%) upper=243278 (42.66%) lower=23917 (4.19%)
tstor: exact=116 (0.04%) upper=198285 (65.44%) lower=104609 (34.52%)
ext: check=125135 recap=590 ppush=343 1rep=1975 thrt=0
q-moves: gen=1722 tested=1248 made/un=65 max-dep=1
max eval diff: part-1=0.424 part-2=1.145
--------------------------------------------
6b1/4Kpk1/5r2/8/3B2P1/7R/8/8 w - - bm Bxf6+; id "Loyd-095; #7";
Line 006: Test [Bxf6+]: failed [Rh6; score=320.991]
Passed 5 out of 6 (0 invalid)
--------------------------------------------
Cheers, Tim.
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