Author: Robert Hyatt
Date: 10:45:19 12/04/00
Go up one level in this thread
On December 04, 2000 at 13:32:01, Vincent Diepeveen wrote:
>Hello here a nightmare scenario when using EGTB,
>for DIEP that's position #4 from bs2830 testset.
>
>Wonder how other progs do with and without egtb on this
>position. Of course the real problem is that this problem
>is like a 17 ply problem as there are 5 ply to see then
>12 checks and it's a stalemate.
>
>without egtb it finds by accident the right move
>quite quickly:
>
>Found at most 0 pieces EGTB
> Proces 1 starting initialisation!
> Proces 1 starting SearchSMP!
>Took 0.09 seconds to start all 1 other processes
>anal
>Analysis mode is on
>Process 1: engineflags=0 msk=1
>process 0: engineflags = 0 denktime=10000000 maxtime=10000000
>00:00 4 (0) 1 -2.48 d7-d8Q Kc7xd8
>00:00 48 (0) 1 -2.48 Nf5-e3
>00:00 344 (0) 2 -2.71 Nf5-e3 Qf6-c3
>++ d7-d8
>00:00 351 (0) 2 -2.48 d7-d8Q Kc7xd8
>00:00 672 (0) 3 -5.59 d7-d8Q Kc7xd8 Re7-e4 Qf6xf5 Kb1xb2
>++ f5-e3
>00:00 1986 (203) 3 -2.84 Nf5-e3 Qf6-d4 Ne3-g2
>00:00 4064 (203) 4 -2.86 Nf5-e3 Qf6-d4 d7-d8Q Kc7xd8
>00:00 7421 (523) 5 -3.27 Nf5-e3 Qf6-d4 d7-d8Q Kc7xd8 Re7-e6 Qd4xd3 Kb1xb2
>00:00 16089 (1156) 6 -4.90 Nf5-e3 Kc7-d8 Re7-e8 Kd8xd7 Re8-a8 Qf6-f3 Ra8-a7 Kd7-
>e8 Ne3-g4 Qf3xg4 Kb1xb2
>00:01 34606 (3595) 7 -5.97 Nf5-e3 Kc7-d8 Re7-h7 Qf6-c3 Rh7-h1 Qc3xd3 Kb1xb2 Qd3-
>d4 Kb2-a3 Qd4xe3
>++ d7-d8
>00:01 38199 (3622) 7 -5.74 d7-d8Q Kc7xd8 Re7-e4 Qf6xf5 Kb1xb2 Qf5-d5 Kb2-c3
>++ e7-e4
>00:01 69614 (13138) 7 -5.11 Re7-e4 Qf6xf5 Kb1xb2 Qf5-d5 Re4-c4 Kc7xd7 Kb2xb3 Kd7
>-e6
>00:01 94341 (13885) 8 -5.14 Re7-e4 Qf6xf5 Kb1xb2 Qf5-d5 Re4-c4 Kc7xd7 Rc4-c3 Kd7
>-d6 Rc3xb3
>00:02 137922 (14799) 9 -5.24 Re7-e4 Qf6xf5 Kb1xb2 Qf5-d5 Re4-c4 Kc7xd7 Rc4-c3 Qd
>5-d4 Kb2xb3 Kd7-e6
>00:04 272255 (28819) 10 -5.04 Re7-e4 Qf6xf5 Kb1xb2 Qf5-b5 Re4-c4 Kc7xd7 Rc4-c3 Q
>b5-b4 Rc3xb3 Qb4-d2 Kb2-a3 Qd2-c2
>00:08 646141 (64755) 11 -5.52 Re7-e4 Qf6-a6 d7-d8Q Kc7xd8 Re4-d4 Kd8-e8 Nf5-d6 K
>e8-f8 Rd4-f4 Kf8-g8 Rf4-g4 Kg8-h7 Kb1xb2 Qa6xd6 Kb2-c3
>++ f5-d4
>00:28 2458279 (670662) 12 -6.73 Re7-e4 Qf6-a6 d7-d8Q Kc7xd8 Re4-d4 Kd8-e8 Nf5-d6
> Ke8-e7 Nd6-f5 Ke7-f8 Rd4-d8 Kf8-f7 Rd8-d7 Kf7-e8 Rd7-e7 Ke8-d8 Kb1xb2 Qa6-a2 Kb
>2-c3 b3-b2 Re7-h7 b2-b1Q Rh7-e7
>++ f5-d4
>01:31 8584391 (2441345) 12 -5.26 Nf5-d4 Qf6xd4 d7-d8Q Kc7xd8 Re7-e8 Kd8-c7 Re8-c
>8 Kc7-b6 Rc8-b8 Kb6-c5 Rb8xb3 Kc5-d5 Kb1-a2 Qd4-a4 Ka2xb2 Kd5-d4
>01:46 10015648 (2876483) 13 -5.26 Nf5-d4 Qf6xd4 d7-d8Q Kc7xd8 Re7-e8 Kd8-c7 Re8-
>c8 Kc7-b6 Rc8-b8 Kb6-c5 Rb8xb3 Kc5-d5 Kb1-a2 Qd4-f6 Ka2-b1 Qf6-f1 Kb1xb2 Qf1-d1
>
>02:16 12914303 (3235142) 14 -4.66 Nf5-d4 Qf6xd4 d7-d8Q Kc7xd8 Re7-e8 Kd8-c7 Re8-
>c8 Kc7-b6 Rc8-b8 Kb6-c5 Rb8-c8 Kc5-b5 Rc8-b8 Kb5-a6 Rb8-a8 Ka6-b7 Ra8-b8 Kb7-c6
>Rb8-c8 Kc6-b7 Rc8-b8
>03:12 18248796 (3419808) 15 -4.58 Nf5-d4 Qf6xd4 d7-d8Q Kc7xd8 Re7-e8 Kd8-c7 Re8-
>c8 Kc7-b6 Rc8-b8 Kb6-c5 Rb8-c8 Kc5-b5 Rc8-b8 Kb5-a6 Rb8-a8 Ka6-b7 Ra8-b8 Kb7-c6
>Rb8-c8 Kc6-b7 Rc8-b8
>07:34 43579630 (7501954) 16 -1.01 Nf5-d4 Qf6xd4 d7-d8Q Kc7xd8 Re7-e8 Kd8-c7 Re8-
>c8 Kc7-b6 Rc8-b8 Kb6-c5 Rb8-c8 Kc5-b5 Rc8-b8 Kb5-a6 Rb8-a8 Ka6-b7 Ra8-b8 Kb7-c6
>Rb8-c8 Kc6-b7 Rc8-b8
>
>fen
>Open a Forsythe File fen\bs2830.fen
>Line number of fen\bs2830.fen ?
>4
> # move freq games score*2 learn ==> huge cache
> D I E P 2.00
>
>black timeleft=27:46.40.00
> - = - = - = - = ... 1 ...
> = - k O R - = - ... 2 ...
> - = - = - q - = ... 3 ...
> = - = - = N = - ... 4 ...
> - = - = - = - = ... 5 ...
> = o = O = - = - ... 6 ...
> - o - = - = - = ... 7 ...
> = K = - = - = - ... 8 ...
>white timeleft=27:46.40.00
>white to move type 'help' for command overview
>
>clean
>Clearing all Hashtables...
>anal
>Analysis mode is on
>Process 1: engineflags=0 msk=1
>process 0: engineflags = 0 denktime=10000000 maxtime=10000000
>00:00 4 (0) 1 -2.48 d7-d8Q Kc7xd8
>00:00 48 (0) 1 -2.48 Nf5-e3
>00:00 348 (0) 2 -2.71 Nf5-e3 Qf6-c3
>++ d7-d8
>00:00 355 (0) 2 -2.48 d7-d8Q Kc7xd8
>00:00 669 (0) 3 -5.59 d7-d8Q Kc7xd8 Re7-e4 Qf6xf5 Kb1xb2
>++ f5-e3
>00:01 2078 (299) 3 -2.84 Nf5-e3 Qf6-d4 Ne3-g2
>00:01 4177 (299) 4 -2.86 Nf5-e3 Qf6-d4 d7-d8Q Kc7xd8
>00:02 7507 (651) 5 -3.27 Nf5-e3 Qf6-d4 d7-d8Q Kc7xd8 Re7-e6 Qd4xd3 Kb1xb2
>00:05 16959 (2422) 6 -5.39 Nf5-e3 Kc7-d8 Re7-e8 Kd8xd7 Re8-a8 Qf6-d4 Ne3-g4 Qd4x
>g4 Kb1xb2
>00:11 41024 (5840) 7 -5.97 Nf5-e3 Kc7-d8 Re7-h7 Qf6-c3 Rh7-h1 Qc3xd3 Kb1xb2 Qd3-
>d4 Kb2-a3 Qd4xe3
>00:19 67725 (8880) 8 -7.06 Nf5-e3 Kc7-d8 Ne3-d5 Qf6-f2 Re7-e8 Kd8xd7 Nd5-f6 Qf2x
>f6 Re8-e1
>00:35 111977 (12259) 9 -7.46 Nf5-e3 Kc7-d8 Ne3-d5 Qf6-f2 Re7-e8 Kd8xd7 Nd5-f6 Qf
>2xf6 Re8-e1 Qf6-c3
>++ d7-d8
>01:07 227171 (30834) 10 -9.26 Nf5-e3 Kc7-d8 Re7-e8 Kd8xd7 Re8-b8 Qf6-c3 Rb8-b7 K
>d7-c8 Rb7-c7 Qc3xc7 Ne3-c4 Qc7-g7
>02:08 483382 (107667) 11 -13.38 Nf5-e3 Kc7-d8 Re7-e8 Kd8xd7 Re8-b8 Qf6-f2 Rb8-b7
> Kd7-c6 Rb7-b8 Qf2-e1 Kb1xb2 Qe1-d2 Kb2-a3 Qd2-a2 Ka3-b4 b3-b2 Rb8-c8 Kc6-d7 Rc8
>-d8 Kd7xd8
>03:12 828835 (160776) 12 -MATE32 Nf5-e3 Kc7-d8 Re7-e4 Qf6-c3 Re4-c4 Qc3xd3 Kb1xb
>2 Qd3xe3 Rc4-c3 Qe3-d2 Kb2xb3
>++ e7-e8
>05:07 1310174 (266867) 12 -MATE33 Re7-e8 Kc7xd7 Re8-e7 Kd7-d8 Re7-b7 Qf6xf5 Rb7x
>b3 Qf5-e5 Rb3xb2
>++ e7-e4
>07:38 2048907 (424197) 12 -MATE39 Re7-e4 Qf6xf5 Kb1xb2 Qf5xd7 Kb2-c3 b3-b2 Re4-c
>4 Kc7-d8 Rc4-b4 Qd7-d6 Rb4xb2
>++ f5-d4
>state
>State check of all 2 processors:
>go=true ttl=4894467 abrtd=663943 q=0 nre=0 rms=-499919 local=88257
>Locks: queue=0 nprctat=0 blocks=0 hash (t,e,p)=0,0,0 root=0
>Px dp_rl dp_q dp_mm abort mmlock mnr DBG wfm wfs
> 0 49 24 48 0 false 23 -1 false true
> 1 55 32 54 0 false 26 -1 false false
>Deepest lines seen:
>e7e8 c7d7 e8e7 d7c8 e7e8 c8c7 f5e7 f6f1 b1b2 f1f2 b2a3 f2c5 a3b2 c5d4 b2a3 d4a1
>a3b4 a1d4 b4a5 d4e5 a5b4 b3b2 e8c8 c7b7 c8c5 b2b1 b4c4 e5f4 d3d4 f4c1 c4d5 c1g5
>e7f5 g5f5 d5d6 f5f6 d6d5 b1f5 d5c4 f5e6 d4d5 e6e2 c4b3 f6b2 b3a4 b2a2 a4b4 e2b2
>
>e7e4 f6f5 e4c4 c7d8 c4d4 f5f1 b1b2 f1f2 b2c3 b3b2 d4g4 b2b1 g4g8 d8e7 d7d8 e7e6
>d8e8 e6f5 e8e4 f5f6 e4c6 f6f7 g8g4 f2b2 c3c4 b2b4 c4d5 b4a5 c6c5 a5a8 c5c6 a8a2
>g4c4 b1d3 d5c5 a2a5 c6b5 a5c7 c5b4 c7e7 c4c5 d3b1 b4c3 b1c1 c3b4 c1b2 b4a4 b2d4
>c5c4 d4a7 b5a5 a7d7 a5b5 d7d1
>Current Line:
>f5d4 f6g5 d7d8 c7d8 d4c6 d8c8 c6a7 c8b8 b1b2 g5g2 b2c3 g2c2 c3d4 c2f2 d4d5 f2f5
>d5c6 f5f3 c6d7 f3d5 d7e8 d5h5 e7f7
>f5d4 f6g5 d7d8 c7d8 d4c6 d8c8 c6a7 c8b8 b1b2 g5d2 b2a3 d2c1 a3a4 b3b2 e7e8 b8c7
>e8e7 c7d8 a7b5 b2b1 e7c7 c1d1 c7c2 d1c2 a4a3 c2d3
>
>18:15 5002130 (677589) 12 -13.65 Nf5-d4 Qf6xd4 d7-d8Q Kc7xd8 Re7-e8 Kd8-c7 Re8-c
>8 Kc7-b6 Rc8-b8 Kb6-a7 Rb8-a8 Ka7-b7 Ra8-b8 Kb7-a7
>state
>State check of all 2 processors:
>go=true ttl=5038672 abrtd=683652 q=0 nre=0 rms=-13732 local=47830
>Locks: queue=0 nprctat=0 blocks=0 hash (t,e,p)=0,0,0 root=0
>Px dp_rl dp_q dp_mm abort mmlock mnr DBG wfm wfs
> 0 49 24 48 0 false 16 -1 false true
> 1 55 32 54 0 false 30 -1 false false
>Deepest lines seen:
>e7e8 c7d7 e8e7 d7c8 e7e8 c8c7 f5e7 f6f1 b1b2 f1f2 b2a3 f2c5 a3b2 c5d4 b2a3 d4a1
>a3b4 a1d4 b4a5 d4e5 a5b4 b3b2 e8c8 c7b7 c8c5 b2b1 b4c4 e5f4 d3d4 f4c1 c4d5 c1g5
>e7f5 g5f5 d5d6 f5f6 d6d5 b1f5 d5c4 f5e6 d4d5 e6e2 c4b3 f6b2 b3a4 b2a2 a4b4 e2b2
>
>e7e4 f6f5 e4c4 c7d8 c4d4 f5f1 b1b2 f1f2 b2c3 b3b2 d4g4 b2b1 g4g8 d8e7 d7d8 e7e6
>d8e8 e6f5 e8e4 f5f6 e4c6 f6f7 g8g4 f2b2 c3c4 b2b4 c4d5 b4a5 c6c5 a5a8 c5c6 a8a2
>g4c4 b1d3 d5c5 a2a5 c6b5 a5c7 c5b4 c7e7 c4c5 d3b1 b4c3 b1c1 c3b4 c1b2 b4a4 b2d4
>c5c4 d4a7 b5a5 a7d7 a5b5 d7d1
>Current Line:
>f5d4 f6a6 b1b2 a6a2 b2c3 a2a1 c3c4 a1c1 c4b5 b3b2 d7d8 c7d8 d4b3 b2b1 e7e8 d8e8
>
>f5d4 f6f1 b1b2 f1d3 d7d8 c7d8 d4c6 d8c8 e7e8 c8c7 c6d8 d3d2 b2a3 b3b2 e8e7 c7d6
>e7e6 d6c5 e6c6 c5d4 c6c7 b2b1 d8c6 d4c5 c6a7 c5b6 c7c6 b6a7
>
>quit
>Waiting for other processes to end
> Proces 1 quitted
Here is my analysis. First _with_ EGTBs turned on:
12 34.62 -7.63 1. Re4 Qxf5 2. d8=Q+ Kxd8 3. Rd4+ Ke7
4. Re4+ Kf6 5. Kxb2 Qf2+ 6. Ka3 Qa2+
7. Kb4 b2 8. Re1 b1=Q+ 9. Rxb1 Qxb1+
10. Kc3 Qc1+ 11. Kb4 Ke5
12 47.01 ++ 1. Nd4!!
12 53.57 -4.81 1. Nd4 Qxd4 2. d8=Q+ Kxd8 3. Re8+ Kc7
4. Rc8+ Kb6 5. Rb8+ Ka5 6. Ra8+ Kb5
7. Rb8+ Ka6 8. Rxb3 <HT>
(2) 12-> 54.31 -4.81 1. Nd4 Qxd4 2. d8=Q+ Kxd8 3. Re8+ Kc7
4. Rc8+ Kb6 5. Rb8+ Ka5 6. Ra8+ Kb5
7. Rb8+ Ka6 8. Rxb3 <HT>
13 58.01 ++ 1. Nd4!!
13 1:05 -2.80 1. Nd4 Qxd4 2. d8=Q+ Kxd8 3. Re8+ Kc7
4. Rc8+ Kb6 5. Rb8+ Kc5 6. Rc8+ Kb4
7. Rc4+ Qxc4 8. dxc4 Kxc4 9. Kxb2 Kb4
10. Kc1
13-> 1:09 -2.80 1. Nd4 Qxd4 2. d8=Q+ Kxd8 3. Re8+ Kc7
4. Rc8+ Kb6 5. Rb8+ Kc5 6. Rc8+ Kb4
7. Rc4+ Qxc4 8. dxc4 Kxc4 9. Kxb2 Kb4
10. Kc1
And then without:
12 14.47 -4.60 1. Re4 Qa6 2. Kxb2 Qa2+ 3. Kc3 Qc2+
4. Kd4 b2 5. Re8 Kxd7 6. Rb8 Kc7 7.
Rb4 b1=Q 8. Rxb1 Qxb1
12-> 15.98 -4.60 1. Re4 Qa6 2. Kxb2 Qa2+ 3. Kc3 Qc2+
4. Kd4 b2 5. Re8 Kxd7 6. Rb8 Kc7 7.
Rb4 b1=Q 8. Rxb1 Qxb1
13 20.42 -4.60 1. Re4 Qa6 2. Kxb2 Qa2+ 3. Kc3 Qc2+
4. Kd4 b2 5. Re8 Kxd7 6. Rb8 Kc7 7.
Rb4 b1=Q 8. Rxb1 Qxb1
13-> 22.68 -4.60 1. Re4 Qa6 2. Kxb2 Qa2+ 3. Kc3 Qc2+
4. Kd4 b2 5. Re8 Kxd7 6. Rb8 Kc7 7.
Rb4 b1=Q 8. Rxb1 Qxb1
14 51.95 -4.91 1. Re4 Qa6 2. Kxb2 Qa2+ 3. Kc3 Qc2+
4. Kb4 Qd2+ 5. Ka3 Qa2+ 6. Kb4 b2 7.
d8=Q+ Kxd8 8. Re1 b1=Q+ 9. Rxb1 Qxb1+
10. Kc4 Qa2+ 11. Kd4 Qe6 12. Ne3 Kc7
14 1:52 ++ 1. Nd4!!
14 4:16 -3.33 1. Nd4 Qxd4 2. d8=Q+ Kxd8 3. Re8+ Kc7
4. Rc8+ Kb6 5. Rb8+ Ka5 6. Ra8+ Kb5
7. Rb8+ Kc5 8. Rxb3 Qf2 9. Rxb2 Qe3
10. Kc2 Qd4
14-> 4:16 -3.33 1. Nd4 Qxd4 2. d8=Q+ Kxd8 3. Re8+ Kc7
4. Rc8+ Kb6 5. Rb8+ Ka5 6. Ra8+ Kb5
7. Rb8+ Kc5 8. Rxb3 Qf2 9. Rxb2 Qe3
10. Kc2 Qd4
So for me, egtbs make this _way_ faster, not slower. Mainly because it can
see how bad all the alternatives to Nd4 are, quicker...
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