can your engine see the draw

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PawnStormZ
Posts: 880
Joined: Mon Feb 15, 2010 6:43 am

can your engine see the draw

Post by PawnStormZ »

     From Walther v Fischer 1959
     
     All the engines that I have tried (without tablebases) give White an advantage of about 2 pawns, even after a few minutes thinking...


[d]8/8/1P6/PBk5/K6p/7P/3b4/8 w - - 0 1[/d]


Analysis by spark-0.3a:

64.b7 Bf4 65.a6 Kb6 66.Be2 Ka7 67.Kb5 Bd6 68.Bc4 Be5 69.Bd3 Bd6 70.Kc6 Bf4 71.Kc5 Bb8 72.Kd4 Bd6 73.Bc4 Bf4 74.Bf1 Bc1 75.Ke5 Bd2 76.Bd3 Bc3+ 77.Kd5 Bd2 78.Be2 Bf4 79.Kc5 Be3+
+- (2.82) Depth: 1 00:00:00
+- (2.86) Depth: 62/76 00:02:13 1934mN



Analysis by Stockfish 1.6.3s(dc) 64bit:

64.b7 Bf4 65.Bd7 Bb8 66.Bf5 Kc6 67.Be4+ Kc5 68.a6 Kb6
+- (2.94) Depth: 1 00:00:00
+- (2.38) Depth: 7 00:00:00 15kN
64.Bd7 Bf4 65.Bf5 Bg3 66.Be4 Bb8 67.Bf3 Bf4 68.Bh5 Bb8 69.Be2 Be5 70.Bg4 Bg3 71.Bf5 Bf4 72.Bd7 Bg3 73.Be6 Bf4 74.b7 Kc6 75.Bd5+ Kc5 76.a6 Bb8 77.Bg2 Kb6 78.Bf1 Kc6 79.Bb5+ Kb6
+- (2.42) Depth: 7 00:00:00 17kN
+- (2.30) Depth: 28 00:00:02 3913kN
64.b7 Bf4 65.Bd3 Kc6 66.a6 Kb6 67.Bc4 Ka7 68.Kb5 Kb8 69.Ka4 Be3 70.Kb4 Bf4 71.Bb5 Bd2+ 72.Kc4 Be3 73.Ba4 Bf4 74.Kb4 Bg3 75.Kc5 Bf4 76.Kb4
+- (2.38) Depth: 28 00:00:02 4995kN
+- (2.14) Depth: 55 00:02:29 1881mN



Analysis by Komodo64 1.0 JA:

64.b7 Bf4 65.a6 Bb8 66.Bd3 Kb6 67.Kb4 Ka7 68.Kb5 Bh2 69.Kc5 Bg3 70.Be2 Bh2 71.Kc6 Bc7 72.Bf1 Be5 73.Bb5 Bb8 74.Kd7 Kb6 75.Bc4 Ka7 76.Ke8 Kb6 77.Kd8 Ka7 78.Be2 Be5 79.Bf1 Bb8
+- (1.66) Depth: 2 00:00:00
+- (1.98) Depth: 47 00:02:14 524mN
     
     
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Eelco de Groot
Posts: 4561
Joined: Sun Mar 12, 2006 2:40 am
Full name:   

Re: can your engine see the draw

Post by Eelco de Groot »

Well, for the Rainbow Serpent it is slightly less than two pawns, but not a draw. That would require too specific an evaluation, or of course 8 piece tablebases...

Eelco

[D]8/8/1P6/PBk5/K6p/7P/3b4/8 w - -

Engine: Rainbow Serpent 1.6.3s(dc) Build 169 (Athlon 2009 MHz, 256 MB)
by Tord Romstad, Marco Costalba, Joona Kiiski Modifications: Dann Corbit

1.00 0:00 +2.58 1.b7 (31) 0

2.00 0:00 +2.22 1.b7 Bf4 2.a6 (1.082) 4

3.00 0:00 +1.69 1.b7 Bf4 2.Bd7 Be5 (1.825) 7

3.00 0:00 +1.81 1.Bd3 Bf4 2.Bf5 Bb8 (1.986) 8

4.00 0:00 +1.93 1.Bd3 Bf4 2.b7 Kc6 3.a6 Bb8 4.Bf5 (3.061) 13

5.00 0:00 +1.81 1.Bd3 Bf4 2.b7 Bg3 3.Be4 Be5 (6.334) 25

6.00 0:00 +1.81 1.Bd3 Bf4 2.Be4 Bd6 3.b7 Bb8 4.Bf5 Kc6
5.a6 Kb6 (29.389) 110

7.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.b7 Bb8 4.Bf5 Bc7
5.Bg4 Bf4 6.a6 Kb6 (57.730) 194

8.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bf3 Be5 4.Bg2 Bg3
5.Bf1 (84.931) 258

9.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Kc6
5.Kb4 Bd6+ 6.Kc4 (98.763) 287

10.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Kc6
5.Kb4 Bd6+ 6.Kc4 (111.204) 323

11.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Kc6
5.Bg6 Bf4 6.Be8+ Kc5 7.Bg6 Bd2 8.Bf7 Bf4
9.Bg6 (133.931) 357

12.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bg6 Bb8 6.Be8 Bf4 7.Bh5 Bh2 8.Be2 Bb8
9.Bc4 Bf4 10.Be2 Kc6 11.Bg4 Kc5
12.Bd7 Bb8 13.Bb5 Be5 14.Bc4 (154.702) 396

13.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bg6 Bb8 6.Bf5 Bf4 7.Bg4 Bb8 8.Bh5 Bf4
9.Bg6 (182.815) 450

14.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Be5 8.Bh5 Kc6
9.Kb4 Bd6+ 10.Kc4 (216.868) 496

15.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Be5 8.Bb5 Bd6
9.Be2 Bf4 10.Bh5 (258.415) 550

16.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Bd6 8.Bh5 Bf4
9.Be8 (316.001) 613

17.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Bd6 8.Bh5 Bf4
9.Bf3 Be5 10.Bh5 Bf4 (460.009) 718

18.00 0:00 +1.77 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Bd6 8.Bh5 Bg3
9.Be2 Bf4 10.Bh5 (617.197) 806

19.00 0:00 +1.77 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Bd6 8.Bb5 Be5
9.Be2 Bf4 10.Bd3 Be5 11.Be2 (847.404) 904

20.01 0:01 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bb8 10.Bf5 Be5 11.Bg4 Bd6
12.Bh5 Bb8 13.Bg4 Bd6 (1.123.118) 985

21.01 0:01 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bg3 10.Be2 Bb8 11.Bh5 Bf4
12.Bf3 Bb8 13.Bh5 (1.709.020) 1094

22.01 0:02 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bg3 10.Be2 Bb8 11.Bh5 Bf4
12.Bf3 Bb8 13.Bh5 (2.590.917) 1159

23.01 0:02 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Bd2
12.Bh5 Bf4 13.Bg4 (3.263.023) 1207

24.01 0:03 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Bd2
12.Bh5 Bf4 13.Bf3 Bc1 14.Bh5 (4.015.243) 1229

25.01 0:04 +1.77 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Bd2
12.Bh5 Kc6 13.Be2 Kb7 14.Bf3+ (5.466.226) 1276

26.01 0:06 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Be5
12.Be6 Bd6 13.b7 Bf4 14.Bd7 (8.065.109) 1326

27.01 0:07 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Be5
12.Be6 Bf4 13.Bd7 Bd6 14.b7 (10.457.478) 1379

28.01 0:11 +1.65 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Be5
12.Be6 Bf4 13.Bd7 Bd6 14.b7 (16.068.720) 1426

29.01 0:13 +1.65 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bg3
9.Bb5 Bf4 10.Be8 Bg3 11.Bh5 Be1
12.Be2 Bd2 13.Bf3 Bf4 14.b7 (19.786.490) 1470

30.01 0:20 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bg3
9.Be6 Kc6 10.Bd5+ Kc5 11.Bf3 Bf4
12.Bd1 Kc6 13.Bc2 Kc5 14.Bd3 (30.744.106) 1513

31.01 0:26 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bg3
9.Be6 Kc6 10.Bd5+ Kc5 11.Bf3 Bf4
12.Bd1 Kc6 13.Bc2 Kc5 14.Bd3 (41.148.821) 1549

32.01 0:32 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bg3
9.Be6 Kc6 10.Bd5+ Kc5 11.Bf3 Bf4
12.Bd1 Kc6 13.Bc2 Bg3 14.Bb3 (50.833.049) 1570

33.01 0:38 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bf4
9.Be6 Bd6 10.Bg4 Kc6 11.Bc8 Kc5
12.Bb7 Bg3 13.Bf3 Bf4 14.Bd1 (61.000.571) 1585

34.01 0:48 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bf4
9.Be6 Bd6 10.Bg4 Kc6 11.Bc8 Kc5
12.Bb7 Bg3 13.Bf3 Bf4 14.Bd1 (78.043.358) 1609

35.01 1:35 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bf4
9.Be6 Kc6 10.Ba2 Kc5 11.Bc4 Kc6
12.Bb5+ Kc5 13.Bd3 Bb8 14.Bc4 (159.527.020) 1669

36.01 2:11 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Bb1 Bd6
9.Bc2 Bf4 10.Bf5 Bd6 11.Bg4 Bf4
12.Bf3+ Kc5 13.Bd1 Kc6 14.Bg4 (219.112.839) 1670

37.01 2:23 +1.57 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bb1 Bg3
9.Bh7 Be5 10.Bg8 Bf4 11.Be6 Bb8
12.Bf5 Bg3 13.Bb1 Be5 14.Ba2 (241.258.847) 1679

38.01 2:41 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bb1 Bg3
9.Bh7 Be5 10.Bg8 Bf4 11.Be6 Bh2
12.b7 Bf4 13.a6 Kb6 14.Bc4 (272.040.284) 1684

39.01 3:33 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bb1 Bf4
9.Bh7 Bd2 10.Be4 Bg5 11.Bd5 Bf4
12.Bf3 Be5 13.b7 Bf4 14.Bd5 (361.457.864) 1694

40.01 8:00 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf7 Be3 8.Bg8 Bf4
9.Ba2 Be5 10.b7 Bb8 11.Be6 Kc6 12.a6 Kb6
13.Bc4 Bf4 14.Kb4 (847.805.570) 1764

41.01 8:40 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf7 Be3 8.Bg8 Bf4
9.Ba2 Be5 10.b7 Bb8 11.Be6 Kc6 12.a6 Kb6
13.Bc4 Bf4 14.Bd3 (918.443.505) 1764

42.01 9:15 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf7 Be3 8.Bg8 Bf4
9.Ba2 Be5 10.b7 Bb8 11.Be6 Bf4 12.a6 Kb6
13.Bc4 Kc6 14.Bb5+ (979.887.570) 1763

best move: Bb5-d3 time: 9:32.891 min n/s: 1.765.725 nodes: 1.011.540.156
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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De Vos W
Posts: 431
Joined: Tue Dec 01, 2009 11:59 am

Re: can your engine see the draw

Post by De Vos W »

Eelco de Groot wrote:Well, for the Rainbow Serpent it is slightly less than two pawns, but not a draw. That would require too specific an evaluation, or of course 8 piece tablebases...

Eelco

[D]8/8/1P6/PBk5/K6p/7P/3b4/8 w - -

Engine: Rainbow Serpent 1.6.3s(dc) Build 169 (Athlon 2009 MHz, 256 MB)
by Tord Romstad, Marco Costalba, Joona Kiiski Modifications: Dann Corbit

1.00 0:00 +2.58 1.b7 (31) 0

2.00 0:00 +2.22 1.b7 Bf4 2.a6 (1.082) 4

3.00 0:00 +1.69 1.b7 Bf4 2.Bd7 Be5 (1.825) 7

3.00 0:00 +1.81 1.Bd3 Bf4 2.Bf5 Bb8 (1.986) 8

4.00 0:00 +1.93 1.Bd3 Bf4 2.b7 Kc6 3.a6 Bb8 4.Bf5 (3.061) 13

5.00 0:00 +1.81 1.Bd3 Bf4 2.b7 Bg3 3.Be4 Be5 (6.334) 25

6.00 0:00 +1.81 1.Bd3 Bf4 2.Be4 Bd6 3.b7 Bb8 4.Bf5 Kc6
5.a6 Kb6 (29.389) 110

7.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.b7 Bb8 4.Bf5 Bc7
5.Bg4 Bf4 6.a6 Kb6 (57.730) 194

8.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bf3 Be5 4.Bg2 Bg3
5.Bf1 (84.931) 258

9.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Kc6
5.Kb4 Bd6+ 6.Kc4 (98.763) 287

10.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Kc6
5.Kb4 Bd6+ 6.Kc4 (111.204) 323

11.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Kc6
5.Bg6 Bf4 6.Be8+ Kc5 7.Bg6 Bd2 8.Bf7 Bf4
9.Bg6 (133.931) 357

12.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bg6 Bb8 6.Be8 Bf4 7.Bh5 Bh2 8.Be2 Bb8
9.Bc4 Bf4 10.Be2 Kc6 11.Bg4 Kc5
12.Bd7 Bb8 13.Bb5 Be5 14.Bc4 (154.702) 396

13.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bg6 Bb8 6.Bf5 Bf4 7.Bg4 Bb8 8.Bh5 Bf4
9.Bg6 (182.815) 450

14.00 0:00 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Be5 8.Bh5 Kc6
9.Kb4 Bd6+ 10.Kc4 (216.868) 496

15.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Be5 8.Bb5 Bd6
9.Be2 Bf4 10.Bh5 (258.415) 550

16.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Bd6 8.Bh5 Bf4
9.Be8 (316.001) 613

17.00 0:00 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Bd6 8.Bh5 Bf4
9.Bf3 Be5 10.Bh5 Bf4 (460.009) 718

18.00 0:00 +1.77 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Bd6 8.Bh5 Bg3
9.Be2 Bf4 10.Bh5 (617.197) 806

19.00 0:00 +1.77 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Be8 Bd6 8.Bb5 Be5
9.Be2 Bf4 10.Bd3 Be5 11.Be2 (847.404) 904

20.01 0:01 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bb8 10.Bf5 Be5 11.Bg4 Bd6
12.Bh5 Bb8 13.Bg4 Bd6 (1.123.118) 985

21.01 0:01 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bg3 10.Be2 Bb8 11.Bh5 Bf4
12.Bf3 Bb8 13.Bh5 (1.709.020) 1094

22.01 0:02 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bg3 10.Be2 Bb8 11.Bh5 Bf4
12.Bf3 Bb8 13.Bh5 (2.590.917) 1159

23.01 0:02 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Bd2
12.Bh5 Bf4 13.Bg4 (3.263.023) 1207

24.01 0:03 +1.73 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Bd2
12.Bh5 Bf4 13.Bf3 Bc1 14.Bh5 (4.015.243) 1229

25.01 0:04 +1.77 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Bd2
12.Bh5 Kc6 13.Be2 Kb7 14.Bf3+ (5.466.226) 1276

26.01 0:06 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Be5
12.Be6 Bd6 13.b7 Bf4 14.Bd7 (8.065.109) 1326

27.01 0:07 +1.69 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Be5
12.Be6 Bf4 13.Bd7 Bd6 14.b7 (10.457.478) 1379

28.01 0:11 +1.65 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Be4+ Kc5
9.Bd3 Bd2 10.Bf5 Bf4 11.Bg4 Be5
12.Be6 Bf4 13.Bd7 Bd6 14.b7 (16.068.720) 1426

29.01 0:13 +1.65 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bg3
9.Bb5 Bf4 10.Be8 Bg3 11.Bh5 Be1
12.Be2 Bd2 13.Bf3 Bf4 14.b7 (19.786.490) 1470

30.01 0:20 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bg3
9.Be6 Kc6 10.Bd5+ Kc5 11.Bf3 Bf4
12.Bd1 Kc6 13.Bc2 Kc5 14.Bd3 (30.744.106) 1513

31.01 0:26 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bg3
9.Be6 Kc6 10.Bd5+ Kc5 11.Bf3 Bf4
12.Bd1 Kc6 13.Bc2 Kc5 14.Bd3 (41.148.821) 1549

32.01 0:32 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bg3
9.Be6 Kc6 10.Bd5+ Kc5 11.Bf3 Bf4
12.Bd1 Kc6 13.Bc2 Bg3 14.Bb3 (50.833.049) 1570

33.01 0:38 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bf4
9.Be6 Bd6 10.Bg4 Kc6 11.Bc8 Kc5
12.Bb7 Bg3 13.Bf3 Bf4 14.Bd1 (61.000.571) 1585

34.01 0:48 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bf4
9.Be6 Bd6 10.Bg4 Kc6 11.Bc8 Kc5
12.Bb7 Bg3 13.Bf3 Bf4 14.Bd1 (78.043.358) 1609

35.01 1:35 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bd7 Bf4
9.Be6 Kc6 10.Ba2 Kc5 11.Bc4 Kc6
12.Bb5+ Kc5 13.Bd3 Bb8 14.Bc4 (159.527.020) 1669

36.01 2:11 +1.61 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Kc6 8.Bb1 Bd6
9.Bc2 Bf4 10.Bf5 Bd6 11.Bg4 Bf4
12.Bf3+ Kc5 13.Bd1 Kc6 14.Bg4 (219.112.839) 1670

37.01 2:23 +1.57 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bb1 Bg3
9.Bh7 Be5 10.Bg8 Bf4 11.Be6 Bb8
12.Bf5 Bg3 13.Bb1 Be5 14.Ba2 (241.258.847) 1679

38.01 2:41 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bb1 Bg3
9.Bh7 Be5 10.Bg8 Bf4 11.Be6 Bh2
12.b7 Bf4 13.a6 Kb6 14.Bc4 (272.040.284) 1684

39.01 3:33 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf5 Bb8 8.Bb1 Bf4
9.Bh7 Bd2 10.Be4 Bg5 11.Bd5 Bf4
12.Bf3 Be5 13.b7 Bf4 14.Bd5 (361.457.864) 1694

40.01 8:00 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf7 Be3 8.Bg8 Bf4
9.Ba2 Be5 10.b7 Bb8 11.Be6 Kc6 12.a6 Kb6
13.Bc4 Bf4 14.Kb4 (847.805.570) 1764

41.01 8:40 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf7 Be3 8.Bg8 Bf4
9.Ba2 Be5 10.b7 Bb8 11.Be6 Kc6 12.a6 Kb6
13.Bc4 Bf4 14.Bd3 (918.443.505) 1764

42.01 9:15 +1.49 1.Bd3 Bf4 2.Be4 Bd6 3.Bd5 Bh2 4.Bf7 Bf4
5.Bh5 Kc6 6.Bg6 Kc5 7.Bf7 Be3 8.Bg8 Bf4
9.Ba2 Be5 10.b7 Bb8 11.Be6 Bf4 12.a6 Kb6
13.Bc4 Kc6 14.Bb5+ (979.887.570) 1763

best move: Bb5-d3 time: 9:32.891 min n/s: 1.765.725 nodes: 1.011.540.156

Not a draw, but Junior the best in this position.

8/8/1P6/PBk5/K6p/7P/3b4/8 w - - 0 1

Analysis by Deep Junior 2010 win32 UCI:

1.b7 Bf4 2.Bf1 Bb8 3.a6
+- (1.93) Depth: 6 00:00:00 1kN
1.Bf1 Bf4 2.b7 Bg3
+- (1.96) Depth: 6 00:00:00 1kN
1.Bf1 Kc6 2.Bg2+ Kc5 3.b7 Bf4 4.Bh1 Bb8
+- (1.88) Depth: 9 00:00:00 4kN
1.Be2 Kc6 2.Bf3+ Kc5 3.b7 Bf4 4.Bg4 Bb8
+- (1.91) Depth: 9 00:00:00 4kN
1.Be8 Bf4 2.Bh5 Bh2 3.b7 Bg3
+- (1.96) Depth: 9 00:00:00 12kN
1.Be8 Bf4 2.b7 Bb8 3.Bh5 Kc6 4.Bf3+ Kc7 5.Kb5
+- (1.79) Depth: 12 00:00:00 24kN
1.Be8 Bf4
+/- (1.36) Depth: 15 00:00:00 98kN
1.Be2 Bg5 2.b7 Bf4 3.Bf3 Bc7 4.a6
+/- (1.38) Depth: 15 00:00:00 123kN
1.Be2 Bf4 2.Bf1 Bg3 3.b7 Kc6 4.Bg2+ Kc7 5.a6
+/- (1.36) Depth: 18 00:00:00 487kN
1.Bf1 Bf4 2.Bg2 Bg3 3.b7 Bc7 4.Bf1
+/- (1.37) Depth: 18 00:00:00 815kN
1.Bf1 Bf4 2.Bg2 Bg3 3.b7 Bc7 4.Bf1 Bb8 5.a6 Kb6 6.Kb4 Bg3 7.Bb5
+/- (1.36) Depth: 21 00:00:00 1235kN
1.Bf1 Bg5 2.Ba6 Bd8 3.b7 Bc7 4.Bd3 Bb8
+/- (0.96) Depth: 24 00:00:01 7989kN
1.Be2 Bg5 2.Kb3 Bf4 3.Bd3 Bd2 4.b7
+/- (0.97) Depth: 24 00:00:02 8097kN
1.Be2 Bg5 2.Kb3 Be3 3.b7 Bf4 4.Ka4 Kc6
+/- (0.95) Depth: 26 00:00:04 18271kN
1.Be2 Bg5 2.Kb3 Be3 3.b7 Bf4 4.Ka4 Kc6
+/- (0.95) Depth: 28 00:00:06 27310kN
1.Be2 Bg5 2.Kb3 Be3 3.b7 Bf4 4.Ka4 Kc6 5.Bf3+ Kc5 6.Bh5 Bh2 7.Bg4 Bb8 8.Bf5
+/- (0.83) Depth: 30 00:00:11 47508kN
1.Be2 Bg5 2.Kb3 Be3 3.b7 Bf4 4.Ka4 Kc6
+/- (0.83) Depth: 32 00:00:15 63007kN
1.Be2 Bg5 2.Kb3 Be3 3.b7 Bf4 4.Ka4 Kc6
+/- (0.83) Depth: 34 00:00:18 76887kN
1.Be2 Bg5 2.Kb3 Be3 3.b7 Bf4 4.Ka4 Kc6 5.Bf3+ Kc5 6.Bh5 Bg3 7.Bg4 Kc6
+/- (0.82) Depth: 36 00:00:45 186mN
1.Be2 Bg5 2.Kb3 Be3 3.b7 Bf4 4.Ka4 Kc6
+/- (0.82) Depth: 37 00:01:05 256mN
1.Be2 Bg5 2.Kb3 Be3 3.b7 Bf4 4.Ka4 Kc6
+/- (0.82) Depth: 38 00:01:15 296mN
1.Be2 Bg5 2.Kb3 Be3 3.b7 Bf4 4.Ka4 Kc6 5.Bf3+ Kc7 6.Bh1 Kb8 7.Bd5 Be5 8.Bf3 Bf4 9.Bg2
+/- (0.81) Depth: 39 00:03:27 843mN

( 08.03.2010)
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Robert Flesher
Posts: 1280
Joined: Tue Aug 18, 2009 3:06 am

Re: can your engine see the draw

Post by Robert Flesher »

PawnStormZ wrote:      From Walther v Fischer 1959
     
     All the engines that I have tried (without tablebases) give White an advantage of about 2 pawns, even after a few minutes thinking...


[d]8/8/1P6/PBk5/K6p/7P/3b4/8 w - - 0 1[/d]


Analysis by spark-0.3a:

64.b7 Bf4 65.a6 Kb6 66.Be2 Ka7 67.Kb5 Bd6 68.Bc4 Be5 69.Bd3 Bd6 70.Kc6 Bf4 71.Kc5 Bb8 72.Kd4 Bd6 73.Bc4 Bf4 74.Bf1 Bc1 75.Ke5 Bd2 76.Bd3 Bc3+ 77.Kd5 Bd2 78.Be2 Bf4 79.Kc5 Be3+
+- (2.82) Depth: 1 00:00:00
+- (2.86) Depth: 62/76 00:02:13 1934mN



Analysis by Stockfish 1.6.3s(dc) 64bit:

64.b7 Bf4 65.Bd7 Bb8 66.Bf5 Kc6 67.Be4+ Kc5 68.a6 Kb6
+- (2.94) Depth: 1 00:00:00
+- (2.38) Depth: 7 00:00:00 15kN
64.Bd7 Bf4 65.Bf5 Bg3 66.Be4 Bb8 67.Bf3 Bf4 68.Bh5 Bb8 69.Be2 Be5 70.Bg4 Bg3 71.Bf5 Bf4 72.Bd7 Bg3 73.Be6 Bf4 74.b7 Kc6 75.Bd5+ Kc5 76.a6 Bb8 77.Bg2 Kb6 78.Bf1 Kc6 79.Bb5+ Kb6
+- (2.42) Depth: 7 00:00:00 17kN
+- (2.30) Depth: 28 00:00:02 3913kN
64.b7 Bf4 65.Bd3 Kc6 66.a6 Kb6 67.Bc4 Ka7 68.Kb5 Kb8 69.Ka4 Be3 70.Kb4 Bf4 71.Bb5 Bd2+ 72.Kc4 Be3 73.Ba4 Bf4 74.Kb4 Bg3 75.Kc5 Bf4 76.Kb4
+- (2.38) Depth: 28 00:00:02 4995kN
+- (2.14) Depth: 55 00:02:29 1881mN



Analysis by Komodo64 1.0 JA:

64.b7 Bf4 65.a6 Bb8 66.Bd3 Kb6 67.Kb4 Ka7 68.Kb5 Bh2 69.Kc5 Bg3 70.Be2 Bh2 71.Kc6 Bc7 72.Bf1 Be5 73.Bb5 Bb8 74.Kd7 Kb6 75.Bc4 Ka7 76.Ke8 Kb6 77.Kd8 Ka7 78.Be2 Be5 79.Bf1 Bb8
+- (1.66) Depth: 2 00:00:00
+- (1.98) Depth: 47 00:02:14 524mN
     
     
(, Microsoft 08.03.2010)



New game
8/8/1P6/PBk5/K6p/7P/3b4/8 w - - 0 1

Analysis by Junior 2010 UCI:

1.Bf1 Bf4 2.b7 Bg3
+- (1.96) Depth: 9 00:00:00
1.Bf1 Bf4 2.b7 Bg3
+- (1.96) Depth: 9 00:00:00 1kN
1.Bf1 Kc6 2.Bg2+ Kc5 3.b7 Bf4 4.Bh1 Bb8
+- (1.88) Depth: 9 00:00:00 4kN
1.Bf1 Kc6 2.Bg2+ Kc5 3.b7 Bf4 4.Bh1 Bb8
+- (1.88) Depth: 9 00:00:00 4kN
1.Be8 Bf4 2.Bh5 Bh2 3.b7 Bg3
+- (1.96) Depth: 9 00:00:00 11kN
1.Be8 Bf4 2.b7 Bb8 3.Bh5 Kc6 4.Bf3+ Kc7 5.Kb5
+- (1.79) Depth: 12 00:00:00 22kN
1.Be8 Bf4
± (1.36) Depth: 15 00:00:00 114kN
1.Bf1 Bf4 2.b7 Kc6 3.a6 Kb6 4.Be2 Bb8 5.Bb5 Bd6
± (1.38) Depth: 15 00:00:00 149kN
1.Bf1 Bf4 2.b7 Kc6 3.Bg2+ Kc5 4.Bf3 Bc7 5.Bh5
± (1.36) Depth: 18 00:00:00 406kN
1.Bf1 Bf4 2.Ba6 Kc6 3.Bc8 Kc5 4.b7 Bb8 5.Bd7 Bg3
± (1.36) Depth: 21 00:00:00 1257kN
1.Bf1 Bf4 2.Bg2 Bh2 3.Bb7 Bf4 4.Ba8
± (1.36) Depth: 24 00:00:00 2487kN
1.Bf1 Bf4 2.Ba6 Kc6 3.Bb5+ Kc5 4.Be2
± (1.36) Depth: 27 00:00:01 5516kN
1.Bf1 Bf4 2.Ba6 Bg5 3.Be2 Bd8 4.b7 Bc7 5.Bg4 Bf4 6.Bc8 Kc6 7.a6 Bb8 8.Kb3 Kb5 9.a7 Bxa7 10.Kc3
± (0.83) Depth: 30 00:00:10 33070kN
1.Bf1 Bf4 2.Ba6 Bg5 3.Be2 Bf4 4.Kb3 Bd2 5.b7 Bf4
± (0.83) Depth: 32 00:00:13 40083kN
1.Bf1 Bf4 2.Ba6 Bg5 3.Be2 Bd8 4.b7 Bc7 5.Bb5 Bf4 6.Be8 Bc7
± (0.77) Depth: 34 00:00:20 55673kN
1.Bf1 Bf4 2.Ba6 Bg5 3.Be2 Bd8 4.b7 Bc7 5.Bb5
± (0.77) Depth: 35 00:00:27 71540kN
1.Bf1 Bf4 2.Ba6 Bg5 3.Be2 Bd8 4.b7 Bc7 5.Bb5 Bf4 6.Be8 Be5 7.Bd7
± (0.77) Depth: 36 00:00:31 77676kN
1.Bf1 Bf4 2.Ba6 Bg5 3.Be2 Bd8 4.b7 Bc7 5.Bb5
± (0.77) Depth: 37 00:00:35 84590kN
1.Bf1 Bf4 2.Ba6 Bg5 3.Be2 Bd8 4.b7 Bc7 5.Bb5
± (0.77) Depth: 38 00:00:40 91909kN
1.Bf1 Bf4 2.Ba6 Bg5 3.Be2 Bd8 4.b7 Bc7 5.Bb5
± (0.77) Depth: 39 00:00:46 102682kN
1.Bf1 Bf4 2.Ba6 Bg5 3.Be2 Bd8 4.b7 Bc7 5.Bb5
± (0.77) Depth: 40 00:01:20 173831kN
1.Bf1 Bg5 2.b7 Bf4 3.Bb5 Bb8 4.Be8 Bf4 5.Bd7 Bb8 6.Bc8 Bh2 7.Bg4 Bf4 8.Bf5 Kc6 9.Bc8 Kc7 10.a6
² (0.59) Depth: 41 00:02:37 336036kN

(, Microsoft 08.03.2010)
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