5 piece endgame and Toga

[Howard E]

This position is not solved by the new Toga. Is it an endgame egbb
problem?

k7/7p/8/2nKb3/8/8/8/8 w - - 0 1 [d]

[Eelco de Groot]

Hello Howard,

In Analysis mode using 4 men bitbases, at first there is no output because the maximum search depth is reached but apparently Toga does not give output. If I stop analysis I get a correct last result:


[d]k7/7p/8/2nKb3/8/8/8/8 w - -

Engine: Toga II 1.4 beta5c (256 MB)
by Thomas Gaksch and Fabien Letouzey

63/23 0:00 0.00 1.Kxc5 (14.316)

best move: Kd5xc5 time: 0:41.688 minCPU 100.0% nodes: 14.909

This was with 4 men bitbases.

With 5 men bitbases, everything done with the single core version, I do see output for every plydepth and the result seems correct although apparently bitbases are not accessed immediately, only after about 5 seconds:


k7/7p/8/2nKb3/8/8/8/8 w - -

Engine: Toga II 1.4 beta5c bitbases5men (256 MB)
by Thomas Gaksch and Fabien Letouzey

19/41 0:01 -5.22 1.Kxe5 h5 2.Kf4 Ne6+ 3.Kg3 Kb7 4.Kh4 Ng7
5.Kg5 Kc6 6.Kh4 Kd5 7.Kg5 Ke5 8.Kh4 Kf4
9.Kh3 Nf5 10.Kg2 h4 11.Kh3 Kf3
12.Kh2 (1.997.658) 1490

20/41 0:01 -5.23 1.Kxe5 h5 2.Kf4 Ne6+ 3.Kg3 Kb7 4.Kh4 Ng7
5.Kg5 Kc6 6.Kh4 Kd5 7.Kg5 Ke5 8.Kh4 Kf4
9.Kh3 Nf5 10.Kg2 h4 11.Kh3 Kf3
12.Kh2 Ke4 (2.346.264) 1525

20/41 0:05 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (8.303.589) 1532

21/41 0:05 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (8.498.278) 1540

22/41 0:05 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (8.583.040) 1546

23/41 0:05 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (8.677.799) 1548

24/41 0:05 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (8.785.765) 1553

25/41 0:05 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (8.890.602) 1561

26/41 0:05 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (9.013.872) 1565

27/41 0:05 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (9.167.074) 1570

28/41 0:05 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (9.364.374) 1574

29/41 0:06 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (9.623.558) 1580

30/41 0:06 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (9.990.111) 1583

31/41 0:06 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (10.466.951) 1591

32/41 0:06 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (11.105.188) 1601

33/41 0:07 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (11.961.337) 1611

34/41 0:08 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (13.037.081) 1627

35/41 0:08 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (14.675.101) 1641

36/41 0:10 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (17.219.068) 1656

37/41 0:12 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (21.131.606) 1674

38/41 0:16 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (27.191.659) 1694

39/41 0:21 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (36.763.539) 1713

40/41 0:29 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (51.588.294) 1733

41/41 0:42 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (74.137.791) 1753

42/41 1:01 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (109.868.453) 1772

43/41 1:31 0.00 1.Kxc5 h5 2.Kd5 h4 3.Ke4 h3 4.Kf3 Kb7
5.Kf2 h2 6.Kg2 (164.347.186) 1787

best move: Kd5xc5 time: 1:36.422 min n/s: 1.790.442 CPU 100.0% n/s(1CPU): 1.790.442 nodes: 172.330.000


This is the result with Toga 1.3.4 with 5 men bitbases:


Engine: Toga II 1.3.4 Default bitbases (256 MB)
by Thomas Gaksch and Fabien Letouzey

1/01 0:00 -50.13 1.Kxe5 (2)

1/01 0:00 0.00 1.Kxc5 (3)

2/01 0:00 0.00 1.Kxc5 (7)

3/01 0:00 0.00 1.Kxc5 (12)

4/02 0:00 0.00 1.Kxc5 (19)

5/02 0:00 0.00 1.Kxc5 (26)

6/02 0:00 0.00 1.Kxc5 (33)

7/03 0:00 0.00 1.Kxc5 (42)

8/03 0:00 0.00 1.Kxc5 (55)

9/03 0:00 0.00 1.Kxc5 (70)

10/04 0:00 0.00 1.Kxc5 (95)

11/04 0:00 0.00 1.Kxc5 (120)

12/05 0:00 0.00 1.Kxc5 (158)

13/05 0:00 0.00 1.Kxc5 (204)

14/05 0:00 0.00 1.Kxc5 (255)

15/06 0:00 0.00 1.Kxc5 (328)

16/06 0:00 0.00 1.Kxc5 (405)

17/06 0:00 0.00 1.Kxc5 (502)

18/06 0:00 0.00 1.Kxc5 (603)

19/07 0:00 0.00 1.Kxc5 (717)

20/08 0:00 0.00 1.Kxc5 (851)

21/08 0:00 0.00 1.Kxc5 (989)

22/08 0:00 0.00 1.Kxc5 (1.157)

23/08 0:00 0.00 1.Kxc5 (1.328)

24/09 0:00 0.00 1.Kxc5 (1.526)

25/10 0:00 0.00 1.Kxc5 (1.737)

26/10 0:00 0.00 1.Kxc5 (1.956)

27/10 0:00 0.00 1.Kxc5 (2.202)

28/10 0:00 0.00 1.Kxc5 (2.452)

29/10 0:00 0.00 1.Kxc5 (2.717)

30/12 0:00 0.00 1.Kxc5 (2.993)

31/12 0:00 0.00 1.Kxc5 (3.287)

32/12 0:00 0.00 1.Kxc5 (3.595)

33/12 0:00 0.00 1.Kxc5 (3.920)

34/12 0:00 0.00 1.Kxc5 (4.273)

35/14 0:00 0.00 1.Kxc5 (4.644)

36/14 0:00 0.00 1.Kxc5 (5.044)

37/14 0:00 0.00 1.Kxc5 (5.467)

38/14 0:00 0.00 1.Kxc5 (5.919)

39/14 0:00 0.00 1.Kxc5 (6.403)

40/16 0:00 0.00 1.Kxc5 (6.932)

41/16 0:00 0.00 1.Kxc5 (7.496)

42/16 0:00 0.00 1.Kxc5 (8.091)

43/16 0:00 0.00 1.Kxc5 (8.738)

44/16 0:00 0.00 1.Kxc5 (9.429)

45/18 0:00 0.00 1.Kxc5 (10.208)

46/18 0:00 0.00 1.Kxc5 (11.025)

47/18 0:00 0.00 1.Kxc5 (11.946)

48/18 0:00 0.00 1.Kxc5 (12.941)

49/18 0:00 0.00 1.Kxc5 (13.996)

50/20 0:00 0.00 1.Kxc5 (15.194)

51/20 0:00 0.00 1.Kxc5 (16.462)

52/20 0:00 0.00 1.Kxc5 (17.854)

53/20 0:00 0.00 1.Kxc5 (19.327)

54/20 0:00 0.00 1.Kxc5 (20.976)

55/22 0:00 0.00 1.Kxc5 (22.762)

56/22 0:00 0.00 1.Kxc5 (24.618)

57/23 0:00 0.00 1.Kxc5 (26.652)

58/23 0:00 0.00 1.Kxc5 (28.786)

59/23 0:00 0.00 1.Kxc5 (31.035)

60/24 0:00 0.00 1.Kxc5 (33.413)

61/24 0:00 0.00 1.Kxc5 (35.953)

62/25 0:00 0.00 1.Kxc5 (38.624)

63/25 0:00 0.00 1.Kxc5 (41.384)


Regards, Eelco

[Uri Blass]

Unlike you I am not using bitbases for toga so I have no problem
Toga also does not need bitbases to find the right move in some seconds.

New game
k7/7p/8/2nKb3/8/8/8/8 w - - 0 1

Analysis by Toga II 1.4 beta5c:

1.Kd5xe5 h7-h5 2.Ke5-d4
-+ (-3.78) Depth: 1/7 00:00:00
1.Kd5xe5 Ka8-b7 2.Ke5-d5
-+ (-3.98) Depth: 2/7 00:00:00
1.Kd5xe5 Ka8-b7 2.Ke5-d5 Kb7-b6
-+ (-3.92) Depth: 3/7 00:00:00
1.Kd5xc5 Ka8-b7 2.Kc5-d5 Be5-f4
-+ (-3.88) Depth: 3/7 00:00:00
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7
-+ (-5.33) Depth: 4/15 00:00:00
1.Kd5xe5 Ka8-b7 2.Ke5-d5 Kb7-b6 3.Kd5-d4
-+ (-4.12) Depth: 4/15 00:00:00
1.Kd5xe5 Ka8-b7 2.Ke5-f4 Kb7-b6 3.Kf4-g4 Kb6-b5
-+ (-4.24) Depth: 5/15 00:00:00
1.Kd5xe5 Ka8-b7 2.Ke5-f4 Kb7-c6 3.Kf4-g5 Kc6-d5 4.Kg5-f4 Nc5-d3+ 5.Kf4-e3
-+ (-4.56) Depth: 6/15 00:00:00 11kN
1.Kd5xe5 Ka8-b7 2.Ke5-f4 Kb7-c6 3.Kf4-g5 Kc6-d6 4.Kg5-f4
-+ (-4.44) Depth: 7/15 00:00:00 20kN
1.Kd5xe5 Ka8-b7 2.Ke5-f5 Kb7-c7 3.Kf5-g5 Kc7-d8 4.Kg5-f5
-+ (-4.11) Depth: 8/21 00:00:00 46kN
1.Kd5xe5 h7-h5 2.Ke5-f4 Nc5-e6+ 3.Kf4-g3 Ka8-b7 4.Kg3-h4 Ne6-g7 5.Kh4-g5 Kb7-c6 6.Kg5-h4 Kc6-d5
-+ (-4.33) Depth: 9/21 00:00:00 62kN
1.Kd5xe5 h7-h5 2.Ke5-f4 Nc5-e6+ 3.Kf4-g3 Ka8-b7 4.Kg3-h4 Ne6-g7 5.Kh4-g5 Kb7-c6 6.Kg5-h4 Kc6-d5 7.Kh4-g5
-+ (-4.33) Depth: 10/21 00:00:01 82kN
1.Kd5xe5 h7-h5 2.Ke5-f4 Nc5-d7 3.Kf4-g5 Nd7-f6 4.Kg5-h4 Ka8-a7 5.Kh4-g5 Ka7-b7 6.Kg5-h4 Kb7-c6 7.Kh4-g5
-+ (-4.47) Depth: 11/21 00:00:01 114kN
1.Kd5xe5 h7-h5 2.Ke5-f4 Nc5-d7 3.Kf4-g5 Nd7-f6 4.Kg5-h4 Ka8-a7 5.Kh4-g5 Ka7-b6 6.Kg5-h4 Kb6-c5 7.Kh4-g5
-+ (-4.58) Depth: 12/23 00:00:01 164kN
1.Kd5xe5 h7-h5 2.Ke5-f4 Nc5-d7 3.Kf4-g5 Nd7-f6 4.Kg5-h4 Ka8-b7 5.Kh4-g3 Kb7-c6 6.Kg3-h3 Kc6-d5 7.Kh3-h4 Kd5-e5 8.Kh4-g5
-+ (-4.70) Depth: 13/23 00:00:01 227kN
1.Kd5xe5 Ka8-b7 2.Ke5-f5 Kb7-c6 3.Kf5-g5 Nc5-e4+ 4.Kg5-f4 Kc6-d5 5.Kf4-g4 Ne4-f6+ 6.Kg4-g5 h7-h5 7.Kg5-h4 Kd5-e4 8.Kh4-g5 Ke4-e5 9.Kg5-h4
-+ (-4.91) Depth: 14/25 00:00:01 387kN
1.Kd5xe5 Ka8-b7 2.Ke5-f5 Kb7-c6 3.Kf5-g5 Nc5-e4+ 4.Kg5-f4 Kc6-d5 5.Kf4-g4 Ne4-f6+ 6.Kg4-g5 h7-h5 7.Kg5-h4 Kd5-d4 8.Kh4-g5 Kd4-e5 9.Kg5-h4 Ke5-f4 10.Kh4-h3
-+ (-4.93) Depth: 15/25 00:00:01 517kN
1.Kd5xe5 Ka8-b7 2.Ke5-f5 Kb7-c6 3.Kf5-g5 Nc5-e4+ 4.Kg5-g4 Kc6-d5 5.Kg4-h4 Ne4-f6 6.Kh4-g3 h7-h5 7.Kg3-h4 Kd5-d4 8.Kh4-g5 Kd4-e5 9.Kg5-h4 Ke5-f4 10.Kh4-h3
-+ (-4.93) Depth: 16/29 00:00:01 757kN
1.Kd5xe5 Ka8-b7 2.Ke5-f5 Kb7-c6 3.Kf5-g5 Nc5-e4+ 4.Kg5-g4 Kc6-d5 5.Kg4-h4 Kd5-e5 6.Kh4-g4 Ne4-f6+ 7.Kg4-h4 Ke5-f4 8.Kh4-h3 Nf6-e4 9.Kh3-h2 h7-h5 10.Kh2-h3 Kf4-e3 11.Kh3-h4
-+ (-4.93) Depth: 17/29 00:00:02 1053kN
1.Kd5xe5 Ka8-b7 2.Ke5-f5 Kb7-c6 3.Kf5-g5 Nc5-e4+ 4.Kg5-g4 Kc6-d5 5.Kg4-h4 Kd5-e6 6.Kh4-h5 Ne4-f6+ 7.Kh5-g5 h7-h5 8.Kg5-h4 Ke6-f5 9.Kh4-g3 Kf5-g5 10.Kg3-f3 h5-h4 11.Kf3-g2 Kg5-g4
-+ (-4.93) Depth: 18/29 00:00:02 1349kN
1.Kd5xe5 h7-h5 2.Ke5-f4 Nc5-e6+ 3.Kf4-g3 Ka8-b7 4.Kg3-h4 Ne6-g7 5.Kh4-g5 Kb7-c6 6.Kg5-h4 Kc6-d5 7.Kh4-g5 Kd5-e5 8.Kg5-h4 Ke5-f4 9.Kh4-h3 Ng7-f5 10.Kh3-g2 h5-h4 11.Kg2-h3 Kf4-f3 12.Kh3-h2
-+ (-5.22) Depth: 19/41 00:00:02 1998kN
1.Kd5xe5 h7-h5 2.Ke5-f4 Nc5-e6+ 3.Kf4-g3 Ka8-b7 4.Kg3-h4 Ne6-g7 5.Kh4-g5 Kb7-c6 6.Kg5-h4 Kc6-d5 7.Kh4-g5 Kd5-e5 8.Kg5-h4 Ke5-f4 9.Kh4-h3 Ng7-f5 10.Kh3-g2 h5-h4 11.Kg2-h3 Kf4-f3 12.Kh3-h2 Kf3-e4
-+ (-5.23) Depth: 20/41 00:00:03 2346kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 20/41 00:00:06 8304kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 21/41 00:00:06 8498kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 22/41 00:00:06 8583kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 23/41 00:00:07 8678kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 24/41 00:00:07 8786kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 25/41 00:00:07 8891kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 26/41 00:00:07 9014kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 27/41 00:00:08 9167kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 28/41 00:00:08 9364kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 29/41 00:00:08 9624kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 30/41 00:00:08 9990kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 31/41 00:00:09 10467kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 32/41 00:00:09 11105kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 33/41 00:00:09 11961kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 34/41 00:00:10 13037kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 35/41 00:00:10 14675kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 36/41 00:00:12 17219kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 37/41 00:00:14 21132kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 38/41 00:00:18 27192kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 39/41 00:00:23 36764kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 40/41 00:00:32 51588kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 41/41 00:00:45 74138kN
1.Kd5xc5 h7-h5 2.Kc5-d5 h5-h4 3.Kd5-e4 h4-h3 4.Ke4-f3 Ka8-b7 5.Kf3-f2 h3-h2 6.Kf2-g2
= (0.00) Depth: 42/41 00:01:06 109868kN

(, 30.01.2008)

[Eelco de Groot]

Unlike you I am not using bitbases for toga so I have no problem
Toga also does not need bitbases to find the right move in some seconds.

Thanks for checking it, Uri! The problem seems to be that there seems to be no output when the bitbases are accessed in this position, but I think that is only because maximum search depth is reached and the search stopped before the (Shredder) GUI normally starts printing lines. So it looks as if nothing was calculated.

The example I gave with 5 men bitbases was wrong; output was without bitbase access because the path to the bitbases was missing a last backslash, I don't know for sure but suspect that is specific to my computer because I have another copy of the dll in the directory right above the bitbases which is not necessary, to skip it Toga needs the extra \ I now think. For me the correct path is D:\egbb5\egbb\ but that is just for my case I think because I was experimenting with where to put the .dll. Correct 'output' I get now only after stopping analysis, just as with four men bitbases:


[d]k7/7p/8/2nKb3/8/8/8/8 w - -

Engine: Toga II 1.4 beta5c bitbases5men (256 MB)
by Thomas Gaksch and Fabien Letouzey

63/23 0:00 0.00 1.Kxc5 (14.314)

best move: Kd5xc5 time: 0:14.125 minCPU 100.0% nodes: 14.907

Eelco

[Howard E]

Thanks for checking this. My setup for the egbb's was wrong but now works with that .dll file in the correct folder.

[Philippe]

I have put all 3 4 5 egbbs under c:\arena\egbb.
The path for configuration is the following under Arena 1.1 (windows xp 32 bits) :
Bitbases Path c:/arena/egbb/
and it works perfectly. These are slashes "/" and not backslashes "\".

[GothicChessInventor]

I bet it doesn't have this one either:

http://www.gothicchess.com/endings/kakbn/game.htm