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Subject: Re: Another Test Position II: Bogoljubow-Mieses, Baden-Baden 1925, Bxd5!

Author: Pete Galati

Date: 15:55:15 02/05/01

Go up one level in this thread


On February 05, 2001 at 18:40:59, Vincent Diepeveen wrote:

>On February 05, 2001 at 10:51:05, Pete Galati wrote:
>
>I guess Rebel extends on matethread somehow and
>that you are not doing this. Also his king safety
>terms are probably different. When using king safety
>extensions you already lock on a low depth onto
>Bxd5 and keep that all the plies, then at a depth
>where score goes up for a4 there the score for Bxd5
>is already high enough to survive that part.
>
>DIEP is in the middle of the ideas of TCB and Rebel.
>First score goes up for a4 then it finds the shot Bxd5
>with a near to +1.0 score.

It strange that Diep kept trying a4 and then moving on to something else, and
then trying a4 again.

>
>Note the long lines DIEP shows for Bxd5 after it finds it.
>Probably only reflects a part of the huge lines it needs
>to see in order to find it...
>
>...note that the logs of TCB first give a4 then Bxd5 and i don't
>see the difference really except if you play Kh8...

True, I wasn't paying enough attention.

Pete



>
>00:00 8 (0) 1 -1.95 Bg2xd5 e6xd5
>00:00 29 (0) 1 -1.80 Rd1xd5 e6xd5 Bg2xd5 Kg8-h8 Bd5xa8 Rd8xa8
>00:00 30 (0) 1 0.28 Rg1-f1
>00:00 31 (0) 1 0.39 Rd1-b1
>00:00 32 (0) 1 0.54 Qa6-d6
>00:00 122 (0) 2 0.27 Qa6-d6 Ra8-c8
>++ a6-b7
>00:00 249 (0) 2 0.34 Qa6-b7 a7-a5
>00:00 883 (281) 3 -0.58 Qa6-b7 Qh5-e2 Rd1-f1 Qe2xa2
>++ a6-d6
>00:00 1410 (387) 3 0.35 Qa6-d6 Ra8-c8 Qd6-e7
>++ d1-e1
>00:00 2248 (591) 3 0.37 Rd1-e1 Qh5-h4 Re1-f1
>++ a6-a3
>00:00 3257 (915) 3 0.39 Qa6-a3 Qh5-e2 Rd1-f1
>00:00 4049 (915) 4 0.17 Qa6-a3 Qh5-e2 Rd1-f1 g7-g6
>++ a6-d6
>00:00 4774 (915) 4 0.28 Qa6-d6 Ra8-c8 Qd6-e7 Qh5-f7
>00:00 11750 (1451) 5 0.38 Qa6-d6 Ra8-c8 Qd6-e7 Qh5-e8 Qe7-b4
>00:01 33319 (6541) 6 0.28 Qa6-d6 Ra8-c8 Qd6-a3 Qh5-e2 Rd1-f1 Rc8-c7
>++ f2-f3
>00:02 85007 (10103) 6 0.29 f2-f3 Rd8-c8 Qa6-d6 Qh5-f7 e3-e4 g7-g6 e4xd5 Rc8xc3
>++ a2-a4
>00:03 108573 (15429) 6 0.32 a2-a4 Qh5-e2 a4xb5 Qe2xb5 Rd1-a1 g7-g6
>00:04 199462 (45793) 7 0.25 a2-a4 b5xa4 c3-c4 Qh5-e2 Rg1-e1 Qe2xf2 c4xd5 Kg8-f7
>
>++ a6-d6
>00:06 302705 (62191) 7 0.28 Qa6-d6 Qh5-f7 Rd1-b1 Ra8-c8 Qd6-a3 Bd7-c6 Bg2-f3
>00:10 536949 (82458) 8 0.15 Qa6-d6 Qh5-f7 Rd1-d2 Bd7-e8 Qd6-b4 Ra8-c8 Rd2-d1 g7-
>g6
>++ a2-a4
>00:15 890073 (173586) 8 0.25 a2-a4 b5xa4 c3-c4 Qh5-e2 Rg1-e1 Qe2xf2 c4xd5 Kg8-f7
>
>++ a6-b7
>00:19 1144658 (193605) 8 0.25 Qa6-b7 g7-g6 Rd1-d2 Qh5-h4 Qb7-c7 Kg8-h8 Rg1-d1 a7
>-a5
>00:38 2503782 (377383) 9 0.13 Qa6-b7 Qh5-h4 Rd1-d2 Qh4-e7 Rd2-c2 Rd8-c8 Rc2-c1 g
>7-g6 Rg1-d1
>++ a2-a4
>01:13 5030618 (1226973) 9 0.61 a2-a4 Kg8-h8 a4xb5 Qh5-e2 Rd1-b1 Qe2xf2 c3-c4 Qf2
>xe3 c4xd5 Qe3xf4 d5xe6
>01:35 6679082 (1342710) 10 0.61 a2-a4 Kg8-h8 a4xb5 Qh5-e2 Rd1-b1 Qe2xf2 c3-c4 Qf
>2xe3 c4xd5 Qe3xf4 d5xe6
>02:45 12181416 (1490399) 11 0.85 a2-a4 Kg8-h8 a4xb5 Qh5-e2 Rd1-b1 Qe2xf2 c3-c4 Q
>f2xe3 c4xd5 e6xd5 Bg2xd5 Qe3xf4 Bd5xa8 Rd8xa8
>++ g2-d5
>03:21 14642884 (2115136) 11 0.98 Bg2xd5 e6xd5 Rg1xg7 Kg8xg7 Qa6-f6 Kg7-g8 Rd1-g1
> Qh5-g4 Rg1xg4 f5xg4 e5-e6 Bd7-c6 Qf6-f7 Kg8-h8 e6-e7 d5-d4 Kh1-g1 Rd8-c8 Qf7-f6
> Kh8-g8 Qf6-e6 Kg8-h8 e3xd4 a7-a5 Qe6-f6 Kh8-g8 d4-d5
>04:17 18785422 (2288523) 12 0.99 Bg2xd5 e6xd5 Rg1xg7 Kg8xg7 Qa6-f6 Kg7-g8 Rd1-g1
> Qh5-g4 Rg1xg4 f5xg4 e5-e6 Bd7-c6 Qf6-f7 Kg8-h8 e6-e7 d5-d4 Kh1-g1 Rd8-c8 Qf7-f6
> Kh8-g8 Qf6-e6 Kg8-h8 e3xd4 Bc6-f3 Qe6-e5 Kh8-g8 Qe5xb5 Rc8-e8 Qb5-c5
>06:58 30853263 (2881187) 13 0.99 Bg2xd5 e6xd5 Rg1xg7 Kg8xg7 Qa6-f6 Kg7-g8 Rd1-g1
> Qh5-g4 Rg1xg4 f5xg4 e5-e6 Bd7-c6 Qf6-f7 Kg8-h8 e6-e7 d5-d4 Kh1-g1 Rd8-c8 Qf7-f6
> Kh8-g8 Qf6-e6 Kg8-h8 e3xd4 Bc6-f3 Qe6-e5 Kh8-g8 Qe5xb5 Rc8-e8 Qb5-c5
>
>
>>On February 05, 2001 at 07:54:13, Ed Schröder wrote:
>>
>>>On February 05, 2001 at 00:55:10, Arturo Ochoa wrote:
>>>
>>>>[D]r2r2k1/p2b2pp/Q3p3/1p1pPp1q/5P2/2P1P3/P4PBP/3R2RK w - -
>>>
>>>5 secs.
>>>
>>>Ed
>>>
>>>-----
>>>Loading...
>>>
>>>Engine version   : Rebel Century 2.01
>>>Hash table size  :  40 Mb
>>>
>>>r2r2k1/p2b2pp/Q3p3/1p1pPp1q/5P2/2P1P3/P4PBP/3R2RK w - -
>>>
>>>00:01  04.00  -0.11  1.Qd6 Qe2 2.Rxd5 Qxf2
>>>00:01  05.00  -0.11  1.Rd2 Rdc8 2.Qd6 Qf7 3.Rd3
>>>00:02  06.00  -0.15  1.Rd2 Rdc8 2.Qd6 Qf7 3.Rd3 Bc6
>>>00:03  07.00  -0.19  1.Rd2 Rdc8 2.Qd6 Qf7 3.Rd3 Rc6 4.Qb4
>>>00:05  07.20  -0.16  1.Bxd5
>>>00:05  07.20  0.00  1.Bxd5 exd5 2.Rxg7+ Kxg7 3.Qf6+ Kg8 4.Rg1+ Qg4 5.Rxg4+ fxg4
>>>6.Qg5+ Kf7 7.Qf6+ Kg8 8.Qg5+ Kf7 9.Qf6+
>>>00:06  08.00  0.39  1.Bxd5 exd5 2.Rxg7+ Kxg7 3.Qf6+ Kg8 4.Rg1+ Qg4 5.Rxg4+ fxg4
>>>6.e6 Bc6 7.Qf7+ Kh8 8.e7 d4+ 9.Kg1 Rdc8 10.cxd4
>>>00:07  09.00  0.39  1.Bxd5 exd5 2.Rxg7+ Kxg7 3.Qf6+ Kg8 4.Rg1+ Qg4 5.Rxg4+ fxg4
>>>6.e6 Bc6 7.Qf7+ Kh8 8.e7 d4+ 9.Kg1 Rdc8 10.cxd4
>>>00:10  10.00  0.49  1.Bxd5 exd5 2.Rxg7+ Kxg7 3.Qf6+ Kg8 4.Rg1+ Qg4 5.Rxg4 fxg4
>>>6.e6+ Bc6 7.Qf7+ Kh8 8.e7 Rdc8 9.e8=Q+
>>>00:20  11.00  0.58  1.Bxd5 exd5 2.Rxg7+ Kxg7 3.Qf6+ Kg8 4.Rg1+ Qg6 5.Rxg6+ hxg6
>>>6.Qxg6+ Kh8 7.e6 Bc6 8.f3+ Rf8 9.e7 Rfc8 10.Qxf5 d4
>>>00:37  12.00  0.52  1.Bxd5 exd5 2.Rxg7+ Kxg7 3.Qf6+ Kg8 4.Rg1+ Qg4 5.Rxg4+ fxg4
>>>6.e6+ Bc6 7.Qf7+ Kh8+ 8.e7 d4+ 9.Kg1 Rdc8 10.exd4 Bf3 11.d5 a5
>>>01:28  13.00  0.64  1.Bxd5 exd5 2.Rxg7+ Kxg7 3.Qf6+ Kg8 4.Rg1+
>>
>>Took TCB significantly longer to see Bxd5, but it decided that it wasn't such a
>>good move after a while.  I'd be interested in seeing if Rebel Century would
>>have also moved on to a different move if it had been given some more time.
>>
>>I don't understand the Bxb5 move very well, it looks like a move I'd make in a
>>blitz game to confuse my opponent and make him think I understood the position
>>better than I did.  But I like it significantly more than the move that TCB went
>>with after it gave up on Bxb5, then it moved on to 1.a4, that move I could never
>>make.
>>
>>Pete
>>
>>00:00:00,00 OnPositionSet : r2r2k1/p2b2pp/Q3p3/1p1pPp1q/5P2/2P1P3/P4PBP/3R2RK w
>>- - 0 1
>>xboard : analyze
>>00:00:00,00 OnGearShift : Infinite
>>Time limits = 1.p0 : Short = 00:00:10,50; Average = 00:00:21,00; Long =
>>00:01:24,00; Limit = 00:11:15,00;
>>00:00:00,00 InfoDepth : 1
>>00:00:00,00 InfoPV : nodes = 6 eval = -789 1. Qxb5
>>00:00:00,00 InfoPV : nodes = 8 eval = -777 1. Qxa7
>>00:00:00,00 InfoPV : nodes = 14 eval = -777 1. Qxa7
>>00:00:00,00 InfoPV : nodes = 16 eval = -740 1. Qxe6+
>>00:00:00,00 InfoPV : nodes = 24 eval = -740 1. Qxe6+
>>00:00:00,00 InfoPV : nodes = 25 eval = -60 1. Bxd5
>>00:00:00,00 InfoPV : nodes = 32 eval = -60 1. Bxd5
>>00:00:00,00 InfoPV : nodes = 41 eval = 7 1. Qa3
>>00:00:00,00 InfoPV : nodes = 42 eval = 7 1. Qa3
>>00:00:00,00 InfoPV : nodes = 73 eval = 12 1. Qb7
>>00:00:00,00 InfoPV : nodes = 74 eval = 12 1. Qb7
>>00:00:00,00 InfoDepth : 2
>>00:00:00,00 InfoPV : nodes = 222 eval = 16 1. Qb7 a5
>>00:00:00,00 InfoDepth : 3
>>00:00:00,00 InfoPV : nodes = 2229 eval = -82 1. Qb7 Qe2 2. Rdf1
>>00:00:00,00 InfoPV : nodes = 2407 eval = -76 1. Rd2
>>00:00:00,00 InfoPV : nodes = 3063 eval = 3 1. Rd2 Rdc8 2. Qb7
>>00:00:00,00 InfoDepth : 4
>>00:00:00,00 InfoPV : nodes = 6676 eval = 11 1. Rd2 Rdc8 2. Qb7 Bc6
>>00:00:00,05 InfoDepth : 5
>>00:00:00,05 InfoPV : nodes = 16850 eval = 3 1. Rd2 Rdc8 2. Qb7 Be8 3. Rd4
>>00:00:00,11 InfoDepth : 6
>>00:00:00,11 InfoPV : nodes = 49691 eval = 7 1. Rd2 Rdc8 2. Qb7 Qe8 3. Rd3 a5
>>00:00:00,38 InfoDepth : 7
>>00:00:00,49 InfoPV : nodes = 198549 eval = -2 1. Rd2 Rdc8 2. Qa3 a5 3. Qb2 Bc6
>>4. a3
>>00:00:00,93 InfoPV : nodes = 353434 eval = -1 1. Qb7
>>00:00:01,20 InfoPV : nodes = 460545 eval = 2 1. Qb7 a5 2. Rd2 Rac8 3. Qa7 Ra8
>>00:00:01,59 InfoDepth : 8
>>00:00:02,52 InfoPV : nodes = 988109 eval = 2 1. Qb7 Qe2 2. Bxd5 exd5 3. Qxd5+
>>Kf8 4. Qb7 Rab8 5. Qxa7
>>00:00:03,62 InfoPV : nodes = 1406557 eval = 3 1. Rb1
>>00:00:03,95 InfoPV : nodes = 1545322 eval = 5 1. Rb1 Qe2 2. Rgf1 Qc4 3. Rb3 Qc6
>>4. Qxc6 Bxc6 5. Rd1
>>00:00:05,10 InfoPV : nodes = 1981595 eval = 6 1. Qa3
>>00:00:05,21 InfoPV : nodes = 2016186 eval = 5 1. Rb1
>>00:00:05,65 InfoPV : nodes = 2194794 eval = 6 1. Rd2
>>00:00:05,76 InfoPV : nodes = 2226041 eval = 5 1. Rb1
>>00:00:05,76 InfoDepth : 9
>>00:00:07,63 InfoPV : nodes = 2977962 eval = -4 1. Rb1 Rdc8 2. Qd6 Qf7 3. Rb3 Rc4
>>4. Qa6 Bc6 5. Qxc6
>>00:00:08,18 InfoPV : nodes = 3159613 eval = -3 1. Bxd5
>>00:00:08,34 InfoPV : nodes = 3221766 eval = 0 1. Bxd5 exd5 2. Rxg7+ Kxg7 3. Qf6+
>>Kg8 4. Rg1+ Qg4 5. Rxg4+ fxg4 6. Qg5+ Kh8 7. Qf6+ Kg8
>>00:00:12,90 InfoDepth : 10
>>00:00:14,06 InfoPV : nodes = 5395564 eval = 0 1. Bxd5 exd5 2. Rxg7+ Kxg7 3. Qf6+
>>Kg8 4. Rg1+ Qg4 5. Rxg4+ fxg4 6. Qg5+ Kh8 7. Qf6+ Kg8
>>00:00:35,70 InfoDepth : 11
>>00:00:38,39 InfoPV : nodes = 14563717 eval = 0 1. Bxd5 exd5 2. Rxg7+ Kxg7 3.
>>Qf6+ Kg8 4. Rg1+ Qg4 5. Rxg4+ fxg4 6. Qg5+ Kh8 7. Qf6+ Kg8
>>00:01:41,33 InfoPV : nodes = 38024934 eval = 1 1. a4
>>00:01:58,96 InfoPV : nodes = 44501539 eval = 15 1. a4 Kh8 2. axb5 Qe2 3. Ra1
>>Qxf2 4. c4 Qxe3 5. cxd5 Qxf4 6. dxe6
>>00:01:58,96 InfoDepth : 12
>>00:02:23,30 InfoPV : nodes = 53793469 eval = 13 1. a4 Kh8 2. axb5 Qe2 3. Ra1
>>Qxf2 4. c4 Qxe3 5. cxd5 exd5 6. Bxd5 Rab8 7. Qxa7
>>00:02:44,11 InfoDepth : 13
>>00:03:41,73 InfoPV : nodes = 83168320 eval = 10 1. a4 Kh8 2. axb5 Qe2 3. Qd6
>>Qxb5 4. Rb1 Qa4 5. Rb4 Qc6 6. Qxc6 Bxc6 7. Rb8 Raxb8
>>00:07:26,60 InfoDepth : 14
>>00:09:59,78 InfoPV : nodes = 223288984 eval = 17 1. a4 Kh8 2. axb5 Qe2 3. Qd6
>>Qxb5 4. Rb1 Qc6 5. Qxc6 Bxc6 6. c4 Kg8 7. cxd5 Bxd5 8. Bxd5 Rxd5 9. Rb7
>>00:11:40,46 InfoDepth : 15
>>00:26:18,12 InfoPV : nodes = 579275335 eval = 45 1. a4 Qe8 2. Bxd5 Bc8 3. Qc6
>>Bd7 4. Qd6 Rab8 5. axb5 exd5 6. Rxg7+ Kxg7 7. Qf6+ Kg8 8. Rg1+ Qg6 9. Rxg6+ hxg6
>>10. Qxg6+
>>00:29:19,81 InfoDepth : 16
>>00:49:30,48 InfoPV : nodes = 1100835147 eval = 43 1. a4 Qe8 2. Bxd5 Bc8 3. Qc6
>>Bd7 4. Qd6 Rab8 5. axb5 Rb6 6. Qc7 exd5 7. Rxd5 Rxb5 8. Rxb5 Bc6+
>>00:57:42,66 InfoDepth : 17
>>01:53:31,20 InfoPV : nodes = 2496498942 eval = 35 1. a4 Qe8 2. Bxd5 Bc8 3. Qc6
>>Bd7 4. Qd6 Rab8 5. Bf3 bxa4 6. Qa6 Qe7 7. Qxa7 Bc6 8. Rxg7+ Qxg7 9. Bxc6 Qxa7
>>02:19:23,39 InfoDepth : 18
>>07:46:22,45 InfoPV : nodes = 1943063198 eval = 71 1. a4 Qe8 2. Bxd5 exd5 3.
>>Rxg7+ Kxg7 4. Qf6+ Kg8 5. Rg1+ Qg6 6. Rxg6+ hxg6 7. Qxg6+ Kh8 8. Qh5+ Kg8 9. e6
>>Bc6 10. axb5 Bxb5 11. Qxf5 Bc6 12. e7 Rd6 13. Qg5+ Kf7 14. h4
>>08:38:33,97 InfoDepth : 19
>>xboard : exit
>>08:57:16,32 OnGearShift : Neutral



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