[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.
Testposition EET/002
Moderators: hgm, Rebel, chrisw
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- Posts: 4563
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Re: Testposition EET/002
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
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)
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
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
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan