Testposition EET/002

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Jouni
Posts: 3279
Joined: Wed Mar 08, 2006 8:15 pm

Testposition EET/002

Post by Jouni »

[d]8/p5pp/3k1p2/3p4/1P3P2/P1K5/5P1P/8 b - - bm g5
I was wondering why SFdev don't solve this. Because it sees fast, that 1.-g5 is losing :) . This is usual, when You look at "old" test suite.

Analysis by Stockfish 260819 64 BMI2:

2.Kd3
+- (11.64 ++) Depth: 27/33 00:00:04 79885kN, tb=1123
2.Kd3 Ke6 3.Kd4 h5 4.a4 h4 5.f5+ Kxf5 6.Kxd5 Kg4 7.b5 Kh3 8.a5 Kxh2 9.b6 Kg1 10.b7 Kxf2 11.b8Q Kf3 12.Ke6 g4 13.Qxa7 g3 14.Kxf6 g2 15.a6 Kg3
+- (11.59) Depth: 27/33 00:00:05 85828kN, tb=1250
2.Kd3
+- (11.69 ++) Depth: 28/34 00:00:05 89151kN, tb=1513
2.Kd3
+- (11.80 ++) Depth: 28/34 00:00:07 134mN, tb=3248
2.Kd3 Ke6 3.Kd4 gxf4 4.a4 Kd7 5.Kxd5 Kd8 6.b5 Kc8 7.a5 Kd7 8.f3 f5 9.h3 Kd8 10.Ke5 Kd7 11.Kxf4 Kd8 12.Kxf5 Kc8 13.f4 h6 14.Ke6 Kd8 15.f5 Ke8 16.f6 Kf8 17.a6 Ke8 18.b6
+- (11.77) Depth: 28/34 00:00:08 136mN, tb=3319

There was some 5 buggy position in that EET.
Jouni
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Eelco de Groot
Posts: 4561
Joined: Sun Mar 12, 2006 2:40 am
Full name:   

Re: Testposition EET/002

Post by Eelco de Groot »

Probably the use of tablebases? There are more winning moves but without tablebases most of the time Stockfish latest version plays 1...g5 Only some Fail Highs for 1..h5 but not played in a full PV


8/p5pp/3k1p2/3p4/1P3P2/P1K5/5P1P/8 b - -

Engine: Dev 20190916 (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

Code: Select all

24/45  0:01   +0.13    1...g5 2.fxg5 fxg5 3.Kd4 g4 4.a4 a6 
                       5.b5 axb5 6.axb5 h5 7.b6 Kc6 8.b7 Kxb7 
                       9.Kxd5 Kb6 10.Ke6 Kc5 11.Kf5 Kd5 
                       12.Kg5 Ke4 13.Kxh5 Kf5 14.Kh4 Kf4 (4.847.772) 2654 

25/37  0:02   +0.13    1...g5 2.fxg5 fxg5 3.Kd4 g4 4.b5 Kc7 
                       5.Kxd5 Kb6 6.Ke6 Kxb5 7.Kf5 Ka4 
                       8.Kxg4 Kxa3 9.f4 Kb4 10.f5 Kc5 
                       11.Kg5 Kd5 12.Kf6 a5 13.Kg7 a4 14.f6 a3 (5.477.255) 2673 

26/54  0:02   +0.76    1...g5 2.fxg5 fxg5 3.Kd4 g4 4.b5 Kc7 
                       5.Kxd5 Kb6 6.Ke6 Kxb5 7.Kf5 Ka4 
                       8.Kxg4 Kxa3 9.f4 Kb4 10.Kg5 Kc4 
                       11.Kh6 a5 12.f5 a4 13.f6 a3 14.f7 a2 (6.480.086) 2673 

27/64  0:03   +1.01    1...g5 2.fxg5 fxg5 3.Kd4 Kc6 4.a4 g4 
                       5.Ke5 h6 6.Kf4 h5 7.Ke5 a6 8.Kd4 Kd6 
                       9.b5 a5 10.Ke3 Kc5 11.f4 gxf3 
                       12.Kxf3 h4 13.Ke3 d4+ 14.Ke4 h3 (7.907.682) 2631 

28/58  0:03   +1.12--  1...g5 2.fxg5 (8.556.240) 2624 

28/58  0:03   +1.23--  1...g5 2.fxg5 (9.099.009) 2620 

28/58  0:03   +1.12++  1...g5 (9.472.067) 2617 

28/58  0:03   +0.91++  1...g5 (9.536.089) 2617 

28/58  0:03   +0.92    1...g5 2.fxg5 fxg5 3.Kd4 Kc6 4.a4 g4 
                       5.Ke5 h6 6.Kf4 h5 7.Ke5 a6 8.Kd4 Kd6 
                       9.b5 a5 10.Ke3 Kc5 11.Kf4 d4 12.Ke4 Kc4 
                       13.b6 d3 14.b7 d2 (9.550.426) 2615 

29/48  0:03   +0.82++  1...g5 (9.941.259) 2614 

29/53  0:03   +0.99    1...g5 2.fxg5 fxg5 3.Kd4 Kc6 4.a4 g4 
                       5.Ke5 h6 6.Kf4 h5 7.Ke5 a6 8.Kd4 Kd6 
                       9.b5 a5 10.Ke3 Kc5 11.Kf4 d4 12.Ke4 Kc4 
                       13.b6 d3 14.b7 d2 (10.222.453) 2612 

30/52  0:04   +1.10--  1...g5 2.fxg5 (10.898.610) 2624 

30/52  0:04   +1.21--  1...g5 2.fxg5 (11.274.211) 2631 

30/52  0:04   +1.36--  1...g5 2.fxg5 (12.361.709) 2665 

30/61  0:04   +1.23++  1...g5 (13.015.896) 2679 

30/61  0:04   +1.19    1...g5 2.fxg5 fxg5 3.Kd4 g4 4.b5 Kc7 
                       5.Kxd5 Kb6 6.Ke6 Kxb5 7.Kf5 Ka4 
                       8.Kxg4 Kxa3 9.f4 Kb4 10.Kg5 Kc4 
                       11.Kh6 a5 12.f5 a4 13.f6 a3 14.f7 a2 (13.216.577) 2683 

31/60  0:05   +1.30--  1...g5 2.fxg5 (13.837.329) 2690 

31/72  0:05   +1.40--  1...g5 2.fxg5 (14.480.549) 2695 

31/72  0:05   +1.56--  1...g5 2.fxg5 (15.422.631) 2710 

31/72  0:05   +1.42++  1...g5 (16.103.206) 2719 

31/72  0:06   +1.59    1...g5 2.fxg5 fxg5 3.Kd4 Kc6 4.a4 g4 
                       5.Ke5 h6 6.Kd4 a6 7.Ke5 h5 8.Kd4 Kd6 
                       9.b5 a5 10.Ke3 Kc5 11.Kd3 h4 12.Ke3 d4+ 
                       13.Kd3 h3 14.Ke4 Kc4 (16.580.889) 2730 

32/52  0:06   +1.59    1...g5 2.fxg5 fxg5 3.Kd4 Kc6 4.a4 g4 
                       5.Ke5 h6 6.Kd4 a6 7.Ke5 h5 8.Kd4 Kd6 
                       9.b5 a5 10.Ke3 Kc5 11.Kd3 h4 12.Ke3 d4+ 
                       13.Kd3 h3 14.Ke4 Kc4 (18.703.817) 2740 

33/59  0:07   +1.59    1...g5 2.fxg5 fxg5 3.Kd4 Kc6 4.a4 g4 
                       5.Ke5 h6 6.Kd4 a6 7.Ke5 h5 8.Kd4 Kd6 
                       9.b5 a5 10.Ke3 Kc5 11.Kf4 d4 12.Ke4 h4 
                       13.Kd3 h3 14.Ke4 Kc4 (21.551.085) 2740 

34/59  0:08   +1.70--  1...g5 2.fxg5 (23.302.951) 2747 

34/59  0:09   +1.81--  1...g5 2.fxg5 (24.815.788) 2751 

34/59  0:09   +1.96--  1...g5 2.fxg5 (27.126.620) 2746 

34/59  0:10   +1.83++  1...g5 (27.747.430) 2746 

34/59  0:10   +1.97    1...g5 2.fxg5 fxg5 3.Kd4 Kc6 4.a4 g4 
                       5.Ke5 h6 6.Kd4 a6 7.Ke5 h5 8.Kd4 Kd6 
                       9.b5 a5 10.Ke3 Ke5 11.f4+ Kd6 12.f5 h4 
                       13.f6 d4+ 14.Kxd4 g3 (28.572.946) 2739 

35/52  0:11   +2.07--  1...g5 2.fxg5 (31.217.083) 2731 

35/54  0:11   +1.97++  1...g5 (31.715.099) 2728 

35/54  0:11   +1.81++  1...g5 (31.780.848) 2728 

35/58  0:11   +1.60++  1...g5 (32.216.055) 2726 

35/59  0:12   +1.98    1...g5 2.fxg5 fxg5 3.Kd4 Kc6 4.a4 g4 
                       5.Ke5 a6 6.Kf4 Kd6 7.Kf5 h5 8.Kf4 Ke6 
                       9.Ke3 Ke5 10.Kd3 Kd6 11.Kd4 h4 12.b5 axb5 
                       13.axb5 h3 14.b6 Kc6 (32.891.889) 2715 

36/61  0:12   +1.87++  1...g5 (34.429.896) 2713 

36/61  0:12   +1.76++  1...g5 (34.544.207) 2714 

36/61  0:12   +1.61++  1...g5 (34.740.653) 2714 

36/68  0:12   +1.39++  1...g5 (34.945.764) 2715 

36/74  0:12   +1.46    1...g5 2.fxg5 fxg5 3.Kd4 g4 4.b5 Kc7 
                       5.Kxd5 Kb6 6.Ke6 Kxb5 7.Kf5 Ka4 
                       8.Kxg4 Kxa3 9.f4 Kb4 10.Kg5 Kc4 
                       11.Kh6 a5 12.f5 a4 13.f6 a3 14.f7 a2 (35.254.009) 2715 

37/77  0:13   +1.57--  1...g5 2.fxg5 (36.052.952) 2717 

37/90  0:13   +1.68--  1...g5 2.fxg5 (37.282.903) 2724 

37/90  0:14   +1.57++  1...g5 (38.420.742) 2724 

37/90  0:14   +1.84--  1...g5 2.fxg5 (40.020.881) 2722 

37/90  0:15   +1.60++  1...g5 (41.104.622) 2715 

37/90  0:15   +1.21++  1...g5 (41.838.137) 2712 

37/131 0:16   +2.13--  1...g5 2.fxg5 (45.382.470) 2701 

37/133 0:18   +1.42++  1...g5 (49.288.784) 2673 

37/133 0:23   +2.49    1...g5 2.Kd3 gxf4 3.Kd4 Kc6 4.a4 a6 
                       5.f3 h6 6.h3 h5 7.h4 Kd6 8.b5 a5 
                       9.b6 Kc6 10.b7 Kxb7 11.Kxd5 Kb6 
                       12.Kd6 f5 13.Kd5 Kc7 14.Ke5 Kd7 (64.774.763) 2702 

38/50  0:28   +2.60--  1...g5 2.Kd3 (76.315.435) 2715 

38/53  0:29   +2.49++  1...g5 (80.540.231) 2743 

38/53  0:29   +2.34++  1...g5 (80.685.568) 2744 

38/53  0:29   +2.12++  1...g5 (81.151.081) 2748 

38/53  0:29   +1.83++  1...g5 (81.326.670) 2748 

38/53  0:29   +1.45++  1...g5 (81.515.895) 2748 

38/53  0:30   +2.71--  1...g5 2.Kd3 (84.986.794) 2769 

38/70  0:36   +3.36--  1...g5 2.Kd3 (101.123.131) 2806 

38/70  0:45   +4.19--  1...g5 2.Kd3 (128.873.278) 2847 

38/70  0:59   +5.25--  1...g5 2.Kd3 (171.574.493) 2897 

38/86  1:01   +4.32++  1...g5 (180.303.687) 2919 

38/86  1:15   +6.07    1...g5 2.Kd3 gxf4 3.Kd4 f3 4.a4 Kc6 
                       5.Ke3 Kd6 6.Kxf3 Ke5 7.Ke3 d4+ 8.Kd3 Kd5 
                       9.f3 Ke5 10.a5 Kd5 11.f4 a6 12.f5 h6 
                       13.h3 Kc6 14.Kxd4 Kd6 (221.591.412) 2940 

39/50  1:24   +5.96++  1...h5 (250.849.340) 2963 

39/50  1:24   +5.85++  1...h5 (251.123.625) 2962 

39/50  1:24   +5.69++  1...h5 (251.370.259) 2961 

39/50  1:24   +5.47++  1...h5 (251.446.080) 2961 

39/50  1:25   +6.18--  1...h5 2.Kd4 (252.281.340) 2961 

39/50  1:37   +6.56--  1...h5 2.Kd4 (293.751.522) 3010 

39/56  1:44   +6.56    1...g5 2.Kd3 gxf4 3.Kd4 f3 4.a4 a6 
                       5.b5 a5 6.Ke3 f5 7.Kxf3 d4 8.Ke2 f4 
                       9.Kd3 Kd5 10.f3 Kc5 11.Ke4 h6 12.h3 Kc4 
                       13.b6 d3 14.b7 d2 (316.576.111) 3037 

40/56  1:53   +6.67--  1...g5 2.Kd3 (348.967.929) 3062 

40/56  2:02   +6.78--  1...g5 2.Kd3 (377.805.157) 3084 

40/69  2:11   +6.93--  1...g5 2.Kd3 (410.105.566) 3111 

40/69  2:27   +7.15--  1...g5 2.Kd3 (467.209.919) 3166 

40/70  2:44   +7.44--  1...g5 2.Kd3 (527.575.752) 3210 

40/70  3:04   +7.83--  1...g5 2.Kd3 (597.696.553) 3247 

40/70  3:09   +7.48++  1...g5 (615.582.723) 3254 

40/70  3:25   +8.33--  1...g5 2.Kd3 (673.530.038) 3280 

40/70  3:45   +8.56    1...g5 2.Kd3 gxf4 3.Kd4 f3 4.a4 Kc6 
                       5.Ke3 Kd6 6.Kxf3 Ke5 7.Ke3 d4+ 8.Kd3 Kd5 
                       9.f3 Ke5 10.a5 Kd5 11.f4 Kc6 12.Kxd4 Kb5 
                       13.Kc3 f5 14.Kb3 Kc6 (745.445.746) 3305
But this is a faulty testposition then? Because everything loses?


8/p5pp/3k1p2/3p4/1P3P2/P1K5/5P1P/8 b - -

Engine: Kaissa_V (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G.

34 5:20 +12.21 1...h6 2.Kd4 f5 3.a4 a6 4.h3 g5 5.b5 a5
6.f3 gxf4 7.h4 h5 8.b6 Kc6 9.Ke5 d4
10.Kxd4 Kxb6 11.Kd5 Kc7 12.Ke5 Kd7
13.Kxf5 Ke8 14.Kg5 Ke7 (1.134.072.796) 3535

34 5:20 +12.74 1...a6 2.Kd4 f5 3.a4 h6 4.h3 g5 5.b5 a5
6.f3 gxf4 7.h4 h5 8.b6 Kc6 9.Ke5 Kb7
10.Kxd5 Kxb6 11.Kd6 Kb7 12.Ke5 Kc6
13.Kxf5 Kc5 14.Kg5 Kc4 (1.134.072.796) 3535

34 5:20 +12.85 1...g5 2.Kd3 gxf4 3.Kd4 f3 4.a4 Kc6
5.Ke3 Kd6 6.Kxf3 Ke5 7.Ke3 d4+ 8.Kd3 Kd5
9.f3 Ke6 10.Kxd4 Kd7 11.Kd5 Ke7
12.f4 Kd8 13.a5 Ke7 14.b5 Kd7 (1.134.072.796) 3535

34 5:20 +12.85 1...f5 2.Kd4 a6 3.a4 h6 4.h3 g5 5.b5 a5
6.f3 gxf4 7.h4 h5 8.b6 Kc6 9.Ke5 d4
10.Kxd4 Kxb6 11.Kd5 Kc7 12.Ke5 Kd7
13.Kxf5 Kd6 14.Kg5 Ke7 (1.134.072.796) 3535

34 5:20 +13.28 1...g6 2.Kd4 Kc6 3.a4 Kd6 4.b5 h5
5.a5 h4 6.h3 Kc7 7.Kxd5 g5 8.fxg5 fxg5
9.f3 Kc8 10.Kc6 Kb8 11.Kd6 Kc8
12.Kd5 Kb7 13.Ke5 g4 14.fxg4 Kc8 (1.134.072.796) 3535

34 5:20 +13.28 1...Kd7 2.Kd4 Kd6 3.a4 Kc6 4.f5 Kb6
5.Kxd5 Kc7 6.Ke6 Kc6 7.h3 Kc7 8.h4 h6
9.Kd5 Kb7 10.Kc5 h5 11.b5 Kc7 12.a5 Kd7
13.Kd5 Kc7 14.a6 Kb6 (1.134.072.796) 3535

34 5:20 +13.28 1...Kc6 2.a4 d4+ 3.Kxd4 g6 4.Kc4 Kd6
5.b5 Ke6 6.Kd4 Kd7 7.Kc5 Kc7 8.a5 Kc8
9.f5 gxf5 10.f4 Kb8 11.Kc6 Kc8 12.b6 Kb8
13.Kd5 a6 14.Kc6 Kc8 (1.134.072.796) 3535

34 5:20 +13.39 1...Kc7 2.Kd4 Kc6 3.a4 h5 4.f5 h4
5.h3 Kd6 6.b5 Kc7 7.a5 Kd6 8.a6 Kc7
9.Kxd5 Kb6 10.Kc4 Kc7 11.Kc5 Kd7
12.b6 axb6+ 13.Kxb6 Kd6 14.Kb5 Ke5 (1.134.072.796) 3535

34 5:20 +13.39 1...d4+ 2.Kxd4 Kc6 3.a4 g6 4.Kc4 Kd6
5.b5 Ke6 6.Kd4 Kd7 7.Kc5 Kc7 8.a5 Kc8
9.f5 gxf5 10.f4 Kb8 11.Kc6 Kc8 12.b6 Kb8
13.Kd5 a6 14.Kc6 Kc8 (1.134.072.796) 3535

34 5:20 +13.46 1...Ke6 2.Kd4 Kd6 3.a4 Kc6 4.f5 g6
5.f3 Kd6 6.b5 Kc7 7.a5 Kd6 8.f4 Kc7
9.Kxd5 Kd7 10.b6 a6 11.h3 Kc8 12.Ke6 Kb7
13.Kxf6 Kc6 14.Ke6 gxf5 (1.134.072.796) 3535

(Kaissa_V is just the latest Stockfish, no tablebases)
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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