Author: Andreas Guettinger
Date: 17:13:04 03/26/05
Go up one level in this thread
On March 26, 2005 at 14:20:18, Dieter Buerssner wrote:
>On March 26, 2005 at 14:14:00, Kim Roper Jensen wrote:
>
>
>>Hmm what about 3. .. hxg3+ 4. Kxg3 f4+
>>
>>[D] 8/1pk5/8/2Pp2p1/P2P1p2/6KP/8/8 w - - 0 5
>>
>>How does the drawing line look ?
>
>With bitbases (some sort of TBs) I get:
>
> 12721363 14.062 0.00 14t 5.Kg4 b6 6.h4 gxh4 7.cxb6+ Kxb6 8.Kxh4 f3 9.a5+
> Ka6 10.Kg3 Kb5 11.Kxf3 {INTREC} {80}
>
>But the line might be not so logical for a human, because any draw line will be
>the same for the engine, wether the opponent has to fight for it, or myself.
>Perhaps the line without any TBs shows more:
>
> 33454089 33.828 -0.10 15. 5.Kg4 b6 6.h4 gxh4 7.cxb6+ Kxb6 8.Kxh4 Ka5
> 9.Kg4 Kxa4 10.Kxf4 Kb4 11.Kf3 Kc3 12.Ke2 Kxd4
> 13.Kd2 Ke4 14.Ke2 d4 15.Kd2 d3 16.Kd1 Ke3
> 17.Ke1 Kd4 18.Kd1 Kc5 19.Kd2 Kc4 20.Kd1 Kd4
> {-80}
>
>Regards,
>Dieter
Crafty with 5-men TBs sees the draw immediately:
hash table memory = 96M bytes.
pawn hash table memory = 12M bytes.
EGTB access enabled
using tbpath=./TB
5 piece tablebase files found
13986kb of RAM used for TB indices and decompression tables
Crafty v19.19
White(1): setboard 8/1pk5/8/2Pp2p1/P2P1p2/6KP/8/8 w - - 0 5
White(1): analyze
Analyze Mode: type "exit" to terminate.
clearing hash tables
time surplus 0.00 time limit 22.50 (3:30)
depth time score variation (1)
11 0.20 -0.72 1. Kg4 Kd7 2. a5 Kd8 3. h4 f3 4. Kxf3
gxh4 5. Kg4 Ke7 6. Kxh4
11-> 0.23 -0.72 1. Kg4 Kd7 2. a5 Kd8 3. h4 f3 4. Kxf3
gxh4 5. Kg4 Ke7 6. Kxh4
12 0.58 -0.50 1. Kg4 Kd7 2. a5 Kd8 3. c6 Kc7 4. cxb7
Kxb7 5. h4 f3 6. Kxf3 gxh4 7. Kg4 Ka6
8. Kxh4 Kxa5
12-> 0.66 -0.50 1. Kg4 Kd7 2. a5 Kd8 3. c6 Kc7 4. cxb7
Kxb7 5. h4 f3 6. Kxf3 gxh4 7. Kg4 Ka6
8. Kxh4 Kxa5
13 0.82 -0.60 1. Kg4 Kd7 2. a5 Kd8 3. Kf3 Kc7 4.
Kf2 Kb8 5. Ke2 Ka7 6. c6 bxc6 7. Kf3
13-> 1.06 -0.60 1. Kg4 Kd7 2. a5 Kd8 3. Kf3 Kc7 4.
Kf2 Kb8 5. Ke2 Ka7 6. c6 bxc6 7. Kf3
14 1.26 +1 1. Kg4!!
14 1.58 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
14-> 1.62 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
15 2.30 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
15-> 2.40 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
16 3.11 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
16-> 3.20 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
17 4.73 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
17-> 4.94 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
18 7.26 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
18-> 7.56 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
19 10.68 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
19-> 11.20 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
20 17.54 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
20-> 19.62 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
21 29.75 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
21-> 32.49 0.01 1. Kg4 b6 2. h4 gxh4 3. cxb6+ Kxb6
4. Kxh4 f3 5. Kg3 f2 6. Kxf2 <EGTB>
regards
- Andy
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