Author: Uri Blass
Date: 08:41:18 04/08/05
Go up one level in this thread
On April 08, 2005 at 11:30:27, Günther Simon wrote:
>On April 08, 2005 at 11:12:42, Günther Simon wrote:
>
>>On April 08, 2005 at 10:57:02, Uri Blass wrote:
>>
>>>Movei in AEGT does not use tablebases except in the root.
>>>
>>>I find that this helped it to save a draw against Little Goliath and here is the
>>>game
>>>
>>>[Event "AEGT 4"]
>>>[Site "Queen Class H1"]
>>>[Date "2005.04.03"]
>>>[Round "1.5"]
>>>[White "Little Goliath Revival"]
>>>[Black "Movei CCT7"]
>>>[Result "1/2-1/2"]
>>>[ECO "A87"]
>>>[PlyCount "117"]
>>>[EventDate "2005.04.01"]
>>>[EventType "tourn"]
>>>[TimeControl "40/1080:0"]
>>...
>>>51. Bxf7
>>>{[eval 857,16] [emt 0:00:11]} Kxf7 {[eval 189,15] [emt 0:00:18]} 52. f4 {
>>>(Kg3) [eval 32740,17] [emt 0:00:08]} gxf4 {(Ke6) [eval 193,18] [emt 0:00:22]}
>>>53. Kf3 {[eval 32750,4] [emt 0:00:00]} Kg7 {(Kf6) [eval 285,18] [emt 0:00:36]}
>>>54. e4 {(Kxf4) [eval 32754,4] [emt 0:00:00]} fxe3 {[eval 0,22] [emt 0:00:22]}
>>>55. Kxe3 {[eval 0,1] [emt 0:00:01]} Kf6 {[eval 0,1] [emt 0:00:00]} 56. Kf4 {
>>>[eval 0,1] [emt 0:00:00]} Kg6 {(Ke6) [eval 0,1] [emt 0:00:00]} 57. Ke3 {
>>>(Kg3) [eval 0,1] [emt 0:00:00]} Kg5 {(h5) [eval 0,1] [emt 0:00:00]} 58. Kf3 {
>>>[eval 0,1] [emt 0:00:00]} h5 {[eval 0,1] [emt 0:00:00]} 59. gxh5 {
>>>[eval 0,1] [emt 0:00:00]} 1/2-1/2
>>>
>>>Movei with tablebases not at the root cannot find the move 52...gxf4 and prefers
>>>to resign that does not give practical chances unlike gxf4
>>>
>>>Uri
>>
>>This looks very much like a huge e.p. bug in LittleGoliath,
>>especially, as it already shows mate score the moves before
>>and all moves except 54...fxe3 are still mate in some moves.
>>
>>54.e4??
>>[D]8/6k1/7p/8/5pP1/5K2/4P3/8 w - - 0 54
>
>
>...hmmm I cannot verify this move on my internet machine?
>I tried it with several time control setups, but it won't consider
>any move except Kxf4 with a mate score.
>
>LG Revial 3.11 revison 14 under WB 4.27x(Alessandro Scotti):
>[128 MB hash, all 4 men plus RX/R 5 men tablebases]
>
>Guenther
>
>13910 >first : level 40 30 0
>13910 >first : post
>13910 >first : hard
>13910 >first : ping 3
>13910 >first : force
>13920 >first : setboard 8/6k1/7p/8/5pP1/5K2/4P3/8 w - - 0 1
>13970 <first : pong 2
>15813 <first : feature done=1
>15813 >first : accepted done
>15813 <first : pong 3
>16253 >first : name Guenther Simon
>16253 >first : time 180000
>otim 180000
>16253 >first : go
>17736 <first : 6 +336 3 450 Kxf4 Kf6 e4
>17736 <first : 6 +310 3 562 Kxf4 Kg6 e4 h5
>17746 <first : 7 +366 3 1094 Kxf4 Kg6 e4 h5
>17756 <first : 7 +402 3 1450 Kxf4 Kf6 e4 Ke6 e5
>17786 <first : 8 +408 7 3150 Kxf4 Kf6 e3 Ke6 e4 Kd6
>17806 <first : 9 +408 9 4510 Kxf4 Kf6 e3 Ke6 e4 Kf6 e5+ Ke6
>17806 <first : 10 +453 10 8306 Kxf4 Kf6 e3 Ke6 e4 Kf6 e5+ Ke6
>17826 <first : 10 +439 10 10312 Kxf4 Kg6 e4 Kf6 e5+ Kg6 e6
>17836 <first : 11 +462 12 14694 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kf7 Kf5 Ke7
>17876 <first : 12 +480 14 22188 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kf7 Kf5
>17896 <first : 13 +480 18 29326 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kg7 Kf5 Kf7 e6+ Ke7
>Ke5
>17936 <first : 14 +521 22 41188 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kg7 Kf5 Kf7 e6+ Ke7
>Ke5
>17956 <first : 14 +499 22 45344 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kg7 Kf5
>18006 <first : 15 +541 27 66010 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kg7 Kf5
>18036 <first : 15 +556 27 80948 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kf7 Kf5 Ke7 e6 Kd8
>18096 <first : 16 +600 37 104084 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kf7 Kf5 Ke7 e6 Kd8
>18106 <first : 16 +718 37 113540 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kf7 Kf5 Ke7 e6 Kd8
>18176 <first : 16 +1087 48 140806 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kg5 Kd5 Kg6 e6 Kg5
>Ke5 Kg6 Kd6
>18717 <first : 17 +1131 64 215298 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kg5 Kd5 Kg6 e6 Kg5
>Ke5 Kg6 Kd6
>18817 <first : 17 +1211 64 252946 Kxf4 Kg6 e4 Kf6 e5+ Kg6 Ke4 Kg5 Kd5 Kg6 e6 Kg5
>Ke5 Kg6 Kd6
>18867 <first : 17 +1211 64 276854 Kxf4
>19148 <first : 18 +1252 131 355162 Kxf4
>19168 <first : 18 +1368 131 362518 Kxf4
>19188 <first : 18 +1368 131 367992 Kxf4
>19508 <first : 19 +1327 178 432416 Kxf4
>19568 <first : 19 +1331 181 449614 Kxf4 Kg6
>19779 <first : 20 +9951 198 532696 Kxf4 Kg6
>19969 <first : 20 +9967 222 568118 Kxf4 Kg6 e3 Kf6 e4 Ke6 e5 Ke7 Kf5 Kf7 e6+ Kg7
>e7 Kf7 e8=Q+ Kxe8
>20289 <first : 20 +9967 258 663742 Kxf4 Kg6 e3 Kf6 e4 Ke6 e5 Ke7 Kf5 Kf7 e6+ Kg7
>e7 Kf7 e8=Q+ Kxe8
>20289 <first : move f3f4
I did not try little goliath but I downloaded the game from Igor's link.
Maybe the bug is also related to hash tables and learning from previous search.
Uri
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