Author: Uri Blass
Date: 01:04:14 12/28/04
Go up one level in this thread
On December 27, 2004 at 22:20:38, Albert Silver wrote:
>On December 27, 2004 at 18:48:22, Uri Blass wrote:
>
>>On December 27, 2004 at 18:05:21, Albert Silver wrote:
>>
>>>On December 27, 2004 at 12:15:31, Uri Blass wrote:
>>>
>>>>[D]5k2/8/P5B1/3P3p/3b4/8/1P6/1K6 w - - 0 56 bm d6
>>>>
>>>>Am I right to think that it is a draw after Bxh5?
>>>
>>>I haven't analyzed it, and have not time this minuite but will as I've studied
>>>these a bit. I'd definitely think this could be won even without pushing d6
>>>though.
>>>
>>>The general rule is that if the two pawns (and you have 3) are at least 2
>>>squares apart, you can force the win using your king. Anyhow, this may not work
>>>here, but as I said, I'm one foot aout the door, but I'd look closely at it all
>>>the same.
>>>
>>>Get back later on this. Peace.
>>>
>>> Albert
>>
>>Nice rule but it seems that this rule does not work when the pawns are at d5 and
>>a6.
>>
>>The black king can stay at d6 and the bishop at g1-a7 when the pawn at a6 helps
>>black to prevent Ka6.
>>
>>I thought that with 3 pawns the king can go from f5 but it seems that this is
>>also impossible.
>>
>>Going with the king to f6 without sacrificing a pawn is impossible because of
>>Bd4 and after sacrificing a pawn white needs a better square.
>>
>>It is possible that I miss something but together with Yace I could see nothing.
>>
>>
>>Uri
>
>I checked Dvoretsky's Endgame Manual (I hadn't gotten that far yet) and found a
>reference position that was so clear as to leave no doubt it is a draw:
>
>[Event "?"]
>[Site "?"]
>[Date "1954.??.??"]
>[Round "?"]
>[White "Averbakh, Yury"]
>[Black "?"]
>[Result "1/2-1/2"]
>[SetUp "1"]
>[FEN "8/8/b1kP2p1/P5P1/8/BK6/8/8 b - - 0 1"]
>[PlyCount "19"]
>[Source "ChessCafe/CB"]
>[SourceDate "2003.10.29"]
>
>{The ideas we have examined thus far will help you orient yourself in the most
>varied kinds of situations with disconnected pawns - even with a large number
>of pawns on the board.} 1... Kd7 $1 2. Kc3 Ke6 3. Kd4 Be2 (3... Bb7 4. Kc5 Kd7
>{amounts to the same thing.}) 4. Kc5 {(/\ Kc6-c7+-)} Bf3 $1 (4... Kd7 $2 {
>would be a mistake: after} 5. Kd5 Bf1 6. Ke5 Be2 {
>when the white king gets into the kingside. Now, White will get nothing out of}
>7. Kf6 ({The correct idea is to play for zugzwang. From d3, the bishop defends
>the g6-pawn on one diagonal, while on the other, it restrains the advance of
>the a-pawn; ergo, it has no moves. White's king cannot be allowed to get to e7
>- that means that, in addition to d7, the black king has just two other
>squares: e8 and d8. We can take away the first one by putting the king on f7;
>the second, by moving the bishop to c7.} 7. Bc5 Bf1 8. Bb6 Be2 9. Bc7 Bd3 10.
>Kf6 Ke8 11. Kg7 $22 Kd7 12. Kf7 $22 $18) 7... Bd3 8. a6 $2 Bxa6 9. Kxg6 Ke8 $11
>{with the same drawing position as in the game Berger - Kotlerman (with
>opposite colors and reversed flanks).}) 5. a6 Kd7 6. Kb6 Kc8 $1 {
>(the king maintains the zone: White threatened 7 Ka7 Kc8 8 d7+! Kxd7 9 Kb7+-)}
>7. Ka7 Bg4 $1 ({Once again, Black must be accurate. After} 7... Bc6 $2 8. Bb4
>$22 {he gets into zugzwang:} Bd7 9. Kb6 Bf5 10. d7+ $1 Kxd7 (10... Bxd7 11. a7)
>11. Kb7 $18) 8. Kb6 Bf3 $1 9. Kc5 Kd7 $1 10. Kd4 Ke6 $1 $11 1/2-1/2
>
> Albert
Trying to analyze it with yace it seems that yace have some problem here.
Score of the root position in 2.65 for white at depthes 27-30
2.66 at depth 31
so I assume the score should be at least 2.65 for white after the game move
if I give it enough time with depth>=27.
surprisingly at least if I delete learning by replacing engines I do not get
even 2.64 score at depth 27-31
Maybe the game move Kd7 is pruned by null move pruning but even in this case
I do not understand how yace get 2.66 in the root position and never gets that
fantastic number after a move that is supoosed to be inferior or equivalent
move.
I assume that yace does some verification search and the question is what caused
it to evaluate Kd7 as not better than 2.66
If I do not delete learning and make the move Kd7 yace shows Bb4 with the score
of 2.66 for white so it seems that yace calculated Kd7 Bb4 as >=2.66 for white
but the question is why it cannot find the >=2.66 score for Bb4 without learning
Averbakh,Y, 1954
[D]8/8/b1kP2p1/P5P1/8/BK6/8/8 b - - 0 1
Analysis by Yace 0.99.87:
1...Kd7
+- (2.07) Depth: 1 00:00:00
1...Kd7
+- (2.07) Depth: 1 00:00:00
1...Kd7 2.Bc5
+- (2.16) Depth: 2 00:00:00
1...Bd3 2.Kc3
+- (2.15) Depth: 2 00:00:00
1...Bd3 2.Kc3
+- (2.15) Depth: 2 00:00:00
1...Bd3 2.Kc3
+- (2.15) Depth: 2 00:00:00
1...Bd3 2.Kc3 Be4
+- (2.15) Depth: 3 00:00:00
1...Kd7 2.Bc5 Bd3
+- (2.14) Depth: 3 00:00:00
1...Kd7 2.Bc5 Bd3
+- (2.14) Depth: 3 00:00:00
1...Kd7 2.Bc5 Bd3
+- (2.14) Depth: 3 00:00:00
1...Kd7 2.Bc5 Bd3 3.Kc3
+- (2.18) Depth: 4 00:00:00
1...Bb5 2.Kb4 Ba6 3.Kc3
+- (2.17) Depth: 4 00:00:00
1...Bb5 2.Kb4 Ba6 3.Kc3
+- (2.17) Depth: 4 00:00:00
1...Bb5 2.Kb4 Ba6 3.Kc3
+- (2.17) Depth: 4 00:00:00
1...Bb5 2.Kc3 Ba6 3.Kd4 Kd7
+- (2.16) Depth: 5 00:00:00
1...Bb5 2.Kc3 Ba6 3.Kd4 Kd7
+- (2.16) Depth: 5 00:00:00
1...Bb5 2.Kc3 Ba6 3.Kd4 Kd7 4.Bc5
+- (2.22) Depth: 6/8 00:00:00 4kN
1...Bb5 2.Kc3 Ba6 3.Kd4 Kd7 4.Bc5
+- (2.22) Depth: 6/9 00:00:00 8kN
1...Bb5 2.Kc3 Kd7 3.Bc5 Be2
+- (2.22) Depth: 7/9 00:00:01 12kN
1...Bb5 2.Kc3 Kd7 3.Bc5 Be2
+- (2.22) Depth: 7/10 00:00:01 17kN
1...Bb5 2.Kc3 Kb7 3.Kd4 Ka6 4.Bb4 Bd7 5.Bc3
+- (2.23) Depth: 8/10 00:00:01 29kN
1...Bc8 2.Kc4 Be6+ 3.Kd4 Kb5 4.Ke3
+- (2.22) Depth: 8/10 00:00:01 48kN
1...Bc8 2.Kc4 Be6+ 3.Kc3 Kd7
+- (2.22) Depth: 8/10 00:00:01 51kN
1...Bc8 2.Kc4 Be6+ 3.Kc3 Kd7
+- (2.22) Depth: 8/14 00:00:01 52kN
1...Bc8 2.Kc4 Be6+ 3.Kc3 Kb5 4.Bb4 Bc8 5.d7 Bxd7 6.a6
+- (2.21) Depth: 9/14 00:00:01 84kN
1...Bc8 2.Kc4 Be6+ 3.Kc3 Kb5 4.Bb4 Bc8 5.d7 Bxd7 6.a6
+- (2.21) Depth: 9/16 00:00:01 96kN
1...Bc8 2.Kc4 Be6+ 3.Kd4 Kb5 4.Bb4 Bf5 5.Bc3 Kc6 6.Ke5 Kd7
+- (2.23) Depth: 10/16 00:00:01 135kN
1...Bc8 2.Kc4 Be6+ 3.Kd4 Kb5 4.Bb4 Bf5 5.Bc3 Kc6 6.Ke5 Kd7
+- (2.23) Depth: 10/16 00:00:02 149kN
1...Bc8 2.Kc4 Be6+ 3.Kd4 Kb5 4.Bb4 Bf5 5.Bc3 Ka6 6.Ke5 Bd7 7.Kd5
+- (2.26) Depth: 11/16 00:00:02 208kN
1...Bb5 2.Kc3 Kd7 3.Kd4 Be2 4.Bc5 Ba6 5.Ke5
+- (2.25) Depth: 11/16 00:00:02 245kN
1...Bb5 2.Kc3 Kd7
+- (2.25) Depth: 11/16 00:00:02 248kN
1...Bb5 2.Kc3 Kd7
+- (2.25) Depth: 11/17 00:00:02 270kN
1...Bb5 2.Kc3 Ba6 3.Kd4 Bb5 4.Bc5 Kd7 5.Kd5 Be2 6.Ba3 Bb5 7.Kd4 Kc6 8.Bc5 Kd7
9.Kd5 Be2 10.Ba3 Bb5 11.Kd4 Kc6
+- (2.24) Depth: 12/17 00:00:02 389kN
1...Bb5 2.Kc3 Ba6 3.Kd4 Bb5 4.Bc5 Kd7 5.Kd5 Be2 6.Ba3 Bb5 7.Kd4 Kc6 8.Bc5 Kd7
9.Kd5 Be2 10.Ba3 Bb5 11.Kd4 Kc6
+- (2.24) Depth: 12/20 00:00:02 445kN
1...Bb5 2.Kc3 Ba6 3.Kd4 Bb5 4.Bc5 Kd7 5.Kd5 Ba6 6.Bd4 Bb7+ 7.Ke5 Bf3
+- (2.24) Depth: 13/20 00:00:02 582kN
1...Bb5 2.Kc3 Ba6 3.Kd4 Bb5 4.Bc5 Kd7 5.Kd5 Ba6 6.Bd4 Bb7+ 7.Ke5 Bf3
+- (2.24) Depth: 13/23 00:00:02 666kN
1...Bb5 2.Kc3 Be2 3.Kd4 Bg4 4.Ke5 Kb5 5.Kf6 Kxa5 6.Kxg6 Ka4 7.Bb2 Kb5 8.Kf6 Kc6
+- (2.32) Depth: 14/23 00:00:03 1212kN
1...Bc8 2.Kc4
+- (2.31) Depth: 14/23 00:00:03 1375kN
1...Bc8 2.Kc4 Bd7 3.Kd4 Kb5 4.Bb4 Bc8 5.Ke5 Bd7 6.Bc3 Kc6 7.a6 Kb6
+- (2.28) Depth: 14/23 00:00:03 1710kN
1...Bc8 2.Kc4 Bd7 3.Kd4 Kb5 4.Bb4 Bc8 5.Ke5 Bd7 6.Bc3 Kc6 7.a6 Kb6
+- (2.28) Depth: 14/23 00:00:03 1814kN
1...Bc8 2.Kc4 Bd7 3.Kd4 Kb5 4.Bb4 Bc8 5.Ke5 Bd7 6.Bc3 Kc6 7.a6 Kb6
+- (2.28) Depth: 15/23 00:00:03 2243kN
1...Bc8 2.Kc4 Bd7 3.Kd4 Kb5 4.Bb4 Bc8 5.Ke5 Bd7 6.Bc3 Kc6 7.a6 Kb6
+- (2.28) Depth: 15/23 00:00:03 2421kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5
+- (2.47) Depth: 16/25 00:00:04 3875kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5
+- (2.47) Depth: 16/25 00:00:04 4382kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Bd7 7.a6 Kb8 8.Kb6
+- (2.52) Depth: 17/25 00:00:04 5791kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Bd7 7.a6 Kb8 8.Kb6
+- (2.52) Depth: 17/25 00:00:04 7128kN
1...Bc8 2.Kc4 Bd7 3.Kd4 Kb5 4.Ke5 Kxa5 5.Kf6 Kb5 6.Kf7
+- (2.53) Depth: 18/29 00:00:05 9712kN
1...Bc8 2.Kc4 Bd7 3.Kd4 Kb5 4.Ke5 Kxa5 5.Kf6 Kb5 6.Kf7
+- (2.53) Depth: 18/29 00:00:05 10966kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Bb4 Kb8
+- (2.59) Depth: 19/35 00:00:10 19988kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Bb4 Kb8
+- (2.59) Depth: 19/35 00:00:11 21416kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bg4 8.Bb2 Kd7
9.Be5 Bd1 10.a6 Bf3 11.a7 Ba8 12.Bf6
+- (2.62) Depth: 20/35 00:00:12 24382kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bg4 8.Bb2 Kd7
9.Be5 Bd1 10.a6 Bf3 11.a7 Ba8 12.Bf6
+- (2.62) Depth: 20/35 00:00:13 26101kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4
+- (2.63) Depth: 21/35 00:00:17 34691kN
1...Bb5 2.Kc3
+- (2.62) Depth: 21/35 00:00:19 37965kN
1...Bb5 2.Kc3 Be2
+- (2.63) Depth: 21/35 00:00:19 39071kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4
+- (2.63) Depth: 21/35 00:00:19 39071kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4
+- (2.63) Depth: 21/35 00:00:20 40745kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Bg2 11.a7 Ba8 12.Kd4 Kd7 13.Bc5 Ke6 14.Bb6
+- (2.64) Depth: 22/35 00:00:24 48767kN
1...Bb5 2.Kc3
+- (2.63) Depth: 22/35 00:00:26 52854kN
1...Bb5 2.Kc3 Be2
+- (2.64) Depth: 22/35 00:00:28 57038kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Bg2 11.a7 Ba8 12.Kd4 Kd7 13.Bc5 Ke6 14.Bb6
+- (2.64) Depth: 22/35 00:00:28 57038kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Bg2 11.a7 Ba8 12.Kd4 Kd7 13.Bc5 Ke6 14.Bb6
+- (2.64) Depth: 22/35 00:00:31 62403kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Bg2 11.Bc3 Be4 12.Kd4 Bf5 13.Bb4 Kd7
+- (2.64) Depth: 23/37 00:00:39 78836kN
1...Bb5 2.Kc3
+- (2.63) Depth: 23/37 00:00:42 85545kN
1...Bb5 2.Kc3 Be2 3.Bb4 Ba6
+- (2.64) Depth: 23/37 00:00:43 87923kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Bg2 11.Bc3 Be4 12.Kd4 Bf5 13.Bb4 Kd7
+- (2.64) Depth: 23/37 00:00:43 87923kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Bg2 11.Bc3 Be4 12.Kd4 Bf5 13.Bb4 Kd7
+- (2.64) Depth: 23/37 00:00:44 90126kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Kd7 11.Kd4 Ba8 12.Ba3 Bf3 13.Ke5 Bg2
+- (2.64) Depth: 24/42 00:00:57 115118kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Kd7 11.Kd4 Ba8 12.Ba3 Bf3 13.Ke5 Bg2
+- (2.64) Depth: 24/42 00:00:59 119440kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Kd7 11.Kd4 Ba8 12.Ke5 Kc8 13.Ke6 Bf3 14.a7 Kb7
+- (2.64) Depth: 25/42 00:01:08 138633kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Kd7 11.Kd4 Ba8 12.Ke5 Kc8 13.Ke6 Bf3 14.a7 Kb7
+- (2.64) Depth: 25/42 00:01:10 144061kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Kd7 11.Ba3 Ke6 12.Kb6 Kd7 13.Kb5 Kc8 14.Kc5 Kd7 15.Kb6 Kc8
16.Ka7 Bg4 17.d7+
+- (2.64) Depth: 26/42 00:01:25 173840kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Bf3 8.a6 Bg2
9.Bb4 Bf3 10.Kc5 Kd7 11.Ba3 Ke6 12.Kb6 Kd7 13.Kb5 Kc8 14.Kc5 Kd7 15.Kb6 Kc8
16.Ka7 Bg4 17.d7+
+- (2.64) Depth: 26/42 00:01:29 182917kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Bb4 Bf3 8.a6 Kd7
9.Kb6 Kc8 10.Bc3 Bd5 11.Bb2 Bg2 12.Bc3
+- (2.65) Depth: 27/44 00:01:53 231251kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Bb4 Bf3 8.a6 Kd7
9.Kb6 Kc8 10.Bc3 Bd5 11.Bb2 Bg2 12.Bc3
+- (2.65) Depth: 27/44 00:02:09 265256kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Be2 4.Ke5 Kd7 5.Kd4
+- (2.65) Depth: 28/48 00:03:04 376823kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Be2 4.Ke5 Kd7 5.Kd4
+- (2.65) Depth: 28/48 00:03:13 395262kN
1...Bc8 2.Kc4 Ba6+ 3.Kd4 Be2 4.Ke5 Kd7 5.Kf6 Bd3 6.Bc5 Ba6
+- (3.05) Depth: 29/48 00:03:41 450983kN
1...Bc8 2.Kc4
+- (3.05) Depth: 29/50 00:04:34 558488kN
1...Bb5 2.Kc3
+- (3.04) Depth: 29/50 00:05:09 629254kN
1...Bb5 2.Kc3 Kd5 3.a6 Ke6 4.a7 Bc6 5.Kd4 Ba8 6.Bb4 Bg2 7.Kc5 Kd7 8.Bd2 Ba8
9.Bf4 Bg2 10.Be5 Ba8 11.Bd4 Ke6 12.Be3 Bg2 13.Bd2 Kd7 14.Bb4 Ba8 15.Kd4 Ke6
16.Kc4
+- (2.65) Depth: 29/50 00:07:34 932001kN
1...Bb5 2.Kc3 Kd5 3.a6 Ke6 4.a7 Bc6 5.Kd4 Ba8 6.Bb4 Bg2 7.Kc5 Kd7 8.Bd2 Ba8
9.Bf4 Bg2 10.Be5 Ba8 11.Bd4 Ke6 12.Be3 Bg2 13.Bd2 Kd7 14.Bb4 Ba8 15.Kd4 Ke6
16.Kc4
+- (2.65) Depth: 29/50 00:07:56 976363kN
1...Bb5 2.Kc3 Kd5 3.a6 Ke6 4.a7 Bc6 5.Kd4 Ba8 6.Bb4 Bg2 7.Kc5 Kd7 8.Bd2 Ba8
9.Bf4 Bg2 10.Be5 Ba8 11.Bd4 Ke6 12.Be3 Bg2 13.Bd2 Kd7 14.Bb4 Ba8 15.Kd4 Bc6
16.Bc5 Bg2
+- (2.65) Depth: 30/50 00:09:18 1145574kN
1...Bb5 2.Kc3 Kd5 3.a6 Ke6 4.a7 Bc6 5.Kd4 Ba8 6.Bb4 Bg2 7.Kc5 Kd7 8.Bd2 Ba8
9.Bf4 Bg2 10.Be5 Ba8 11.Bd4 Ke6 12.Be3 Bg2 13.Bd2 Kd7 14.Bb4 Ba8 15.Kd4 Bc6
16.Bc5 Bg2
+- (2.65) Depth: 30/50 00:09:40 1191719kN
1...Bb5 2.Kc3 Kd5 3.a6 Ke6 4.a7 Bc6 5.Kd4 Ba8 6.Bb4 Bg2 7.Kc5 Kd7 8.Bd2 Ba8
9.Bf4 Bg2 10.Kd4 Ke6 11.Be5 Kd7 12.Bh2 Ke6 13.a8Q Bxa8 14.Bg3
+- (2.66) Depth: 31/51 00:12:09 1495193kN
1...Bb5 2.Kc3 Kd5 3.a6 Ke6 4.a7 Bc6 5.Kd4 Ba8 6.Bb4 Bg2 7.Kc5 Kd7 8.Bd2 Ba8
9.Bf4 Bg2 10.Kd4 Ke6 11.Be5 Kd7 12.Bh2 Ke6 13.a8Q Bxa8 14.Bg3
+- (2.66) Depth: 31/51 00:14:23 1768967kN
1...Bb5 2.Kc3 Kd5 3.Bb4 Ke6 4.Bc5 Kd5 5.Ba3
+- (2.66) Depth: 32/54 00:20:18 2469558kN
1...Bb5 2.Kc3 Kd5 3.Bb4 Ke6 4.Bc5 Kd5 5.Ba3
+- (2.66) Depth: 32/54 00:23:33 2864488kN
(, MyTown 28.12.2004)
Averbakh,Y, 1954
[D]8/3k4/b2P2p1/P5P1/8/BK6/8/8 w - - 0 1
Analysis by Yace 0.99.87:
2.Bb4
+- (2.09) Depth: 1 00:00:00
2.Bc5
+- (2.16) Depth: 1 00:00:00
2.Bc5
+- (2.16) Depth: 1 00:00:00
2.Bc5 Bd3
+- (2.14) Depth: 2 00:00:00
2.Bc5 Bd3
+- (2.14) Depth: 2 00:00:00
2.Bc5 Bd3 3.Kc3
+- (2.18) Depth: 3 00:00:00
2.Bc5 Bd3 3.Kc3
+- (2.18) Depth: 3 00:00:00
2.Bc5 Kc6 3.Kb4 Kd7
+- (2.16) Depth: 4 00:00:00
2.Kc3 Kc6
+- (2.17) Depth: 4 00:00:00
2.Kc3 Kc6 3.Kd4 Kd7
+- (2.16) Depth: 4 00:00:00
2.Bc5 Kc6 3.Kb4 Kd7
+- (2.16) Depth: 4 00:00:00
2.Bc5 Kc6 3.Kb4 Kd7
+- (2.16) Depth: 4 00:00:00
2.Bc5 Kc6 3.Kc3 Kd7 4.Kd4
+- (2.22) Depth: 5 00:00:00
2.Bc5 Kc6 3.Kc3 Kd7 4.Kd4
+- (2.22) Depth: 5 00:00:00
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6
+- (2.22) Depth: 6/8 00:00:00 3kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6
+- (2.22) Depth: 6/9 00:00:00 4kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5
+- (2.26) Depth: 7/9 00:00:00 7kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5
+- (2.26) Depth: 7/10 00:00:01 8kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5 Bd3
+- (2.25) Depth: 8/10 00:00:01 14kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5 Bd3
+- (2.25) Depth: 8/11 00:00:01 16kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5 Bd3 6.Ke5
+- (2.25) Depth: 9/11 00:00:01 27kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5 Bd3 6.Ke5
+- (2.25) Depth: 9/12 00:00:01 35kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5 Bd3 6.Ke5 Bc4
+- (2.24) Depth: 10/12 00:00:01 49kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5 Bd3 6.Ke5 Bc4
+- (2.24) Depth: 10/16 00:00:01 74kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5 Bb7+ 6.Ke5 Ba6
+- (2.24) Depth: 11/16 00:00:01 103kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Kd5 Bb7+ 6.Ke5 Ba6
+- (2.24) Depth: 11/18 00:00:02 118kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Ke5 Bc4 6.Bd4
+- (2.24) Depth: 12/18 00:00:02 172kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Ke5 Bc4 6.Bd4
+- (2.24) Depth: 12/20 00:00:02 197kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Ke5 Bc4 6.Bd4 Be2 7.Kd5 Bf3+ 8.Ke5 Be2 9.Kd5
Bf3+ 10.Ke5 Be2
+- (2.24) Depth: 13/20 00:00:02 409kN
2.Bc5 Bd3 3.Kc3 Be2 4.Kd4 Ba6 5.Ke5 Bc4 6.Bd4 Be2 7.Kd5 Bf3+ 8.Ke5 Be2 9.Kd5
Bf3+ 10.Ke5 Be2
+- (2.24) Depth: 13/23 00:00:02 499kN
2.Bc5 Bd3 3.Kc3 Bb5 4.Kd4 Kc6
+- (2.24) Depth: 14/23 00:00:02 895kN
2.Kc3 Kc6
+- (2.25) Depth: 14/23 00:00:02 958kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Be2 6.Kc5 Bg4
+- (2.36) Depth: 14/23 00:00:02 1369kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Be2 6.Kc5 Bg4
+- (2.36) Depth: 14/24 00:00:02 1416kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be8 7.a6 Kb8 8.Kb6 Bd7 9.a7+ Ka8
+- (2.47) Depth: 15/24 00:00:03 1747kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be8 7.a6 Kb8 8.Kb6 Bd7 9.a7+ Ka8
+- (2.47) Depth: 15/24 00:00:03 1824kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Ba6
+- (2.47) Depth: 16/24 00:00:03 2352kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Ba6
+- (2.47) Depth: 16/26 00:00:03 2474kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Kd7 8.a6 Bf3 9.a7 Bd5
10.Kc5 Be4
+- (2.53) Depth: 17/26 00:00:04 3364kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Kc8 6.Kc5 Be2 7.Kb6 Kd7 8.a6 Bf3 9.a7 Bd5
10.Kc5 Be4
+- (2.53) Depth: 17/26 00:00:04 3574kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7 7.Kb5 Bc6+ 8.Kb6 Bd5 9.a6 Bh1
10.a7 Ba8 11.Bc5 Kc8 12.Kb5
+- (2.55) Depth: 18/26 00:00:04 4920kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7 7.Kb5 Bc6+ 8.Kb6 Bd5 9.a6 Bh1
10.a7 Ba8 11.Bc5 Kc8 12.Kb5
+- (2.55) Depth: 18/26 00:00:04 5316kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7 7.Kb6 Bc6 8.a6 Kc8
+- (2.57) Depth: 19/28 00:00:05 7664kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7 7.Kb6 Bc6 8.a6 Kc8
+- (2.57) Depth: 19/28 00:00:05 8173kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7 7.Kb6 Bc6 8.a6 Be4 9.a7 Bc6
10.Kc5 Be4 11.Bb2 Ba8 12.Be5
+- (2.62) Depth: 20/30 00:00:06 12027kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7 7.Kb6 Bc6 8.a6 Be4 9.a7 Bc6
10.Kc5 Be4 11.Bb2 Ba8 12.Be5
+- (2.62) Depth: 20/30 00:00:07 13016kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7 7.Bb4
+- (2.63) Depth: 21/32 00:00:09 17940kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7 7.Bb4
+- (2.63) Depth: 21/32 00:00:10 19489kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7 7.Bb4 Kc8 8.Kb6 Bf3 9.a6 Bh1
10.Kc5 Kd7 11.a7 Ba8 12.Kd4 Ke6
+- (2.62) Depth: 22/32 00:00:13 24455kN
2.Bc5 Kc6 3.Bb4 Bb5 4.Kc3 Ba6
+- (2.63) Depth: 22/32 00:00:14 27921kN
2.Bc5 Kc6 3.Bb4
+- (2.63) Depth: 22/35 00:00:16 30542kN
2.Bc5 Kc6 3.Bb4
+- (2.63) Depth: 22/35 00:00:16 31567kN
2.Bc5 Kc6 3.Kc3 Be2 4.Kd4 Kd7
+- (2.62) Depth: 23/39 00:00:24 46758kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Kd5 Ba6 6.Kc5 Bb7
+- (2.63) Depth: 23/39 00:00:25 48695kN
2.Kc3 Kc6 3.Kd4 Bb7
+- (2.63) Depth: 23/39 00:00:26 51722kN
2.Kc3 Kc6 3.Kd4 Bb7
+- (2.63) Depth: 23/39 00:00:29 56556kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Bb4 Bd3 6.Kd4 Be2 7.Kc5 Kc8 8.Kb6 Bg4 9.a6 Bf3
10.a7 Kd7 11.Kc5 Ba8 12.Kd4 Ke6 13.Bc5 Bf3
+- (2.62) Depth: 24/43 00:00:39 75871kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Bb4 Bd3 6.Kd4 Be2 7.Kc5 Kc8 8.Kb6 Bg4 9.a6 Bf3
10.a7 Kd7 11.Kc5 Ba8 12.Kd4 Ke6 13.Bc5 Bf3
+- (2.62) Depth: 24/43 00:00:42 81486kN
2.Kc3 Kc6 3.Kd4 Bb5 4.Ke5 Kd7 5.Bb4 Bd3 6.Kd4 Be2 7.Kc5 Kc8 8.Kb6 Bg4 9.a6 Bf3
10.a7 Kd7 11.Bc5 Ba8 12.Ka5
+- (2.63) Depth: 25/43 00:00:58 110177kN
2.Bc5 Kc6 3.Kc3 Bb5 4.Kd4 Ba6
+- (2.64) Depth: 25/43 00:01:01 116608kN
2.Bc5 Kc6 3.Kc3
+- (2.64) Depth: 25/43 00:01:03 120321kN
2.Bb4 Kc6 3.Kc3 Bb5
+- (2.65) Depth: 25/43 00:01:05 124581kN
2.Bb4 Bb5 3.Kc3
+- (2.64) Depth: 25/43 00:01:09 130986kN
2.Bc5 Kc6 3.Kc3
+- (2.64) Depth: 25/43 00:01:09 130986kN
2.Bc5 Kc6 3.Kc3
+- (2.64) Depth: 25/43 00:01:12 137664kN
2.Bc5 Kc6 3.Kc3 Bb5 4.Kd4 Kd7 5.Kd5 Bd3 6.Bb4 Ba6 7.Kc5 Bf1 8.Kb6 Bg2 9.a6 Kc8
10.Bc3 Bf3 11.Be5 Kd7 12.Ka7 Be2 13.Bd4 Bb5 14.Bc5 Bc6
+- (2.65) Depth: 26/43 00:01:49 211988kN
2.Bc5 Kc6 3.Kc3 Bb5 4.Kd4 Kd7 5.Kd5 Bd3 6.Bb4 Ba6 7.Kc5 Bf1 8.Kb6 Bg2 9.a6 Kc8
10.Bc3 Bf3 11.Be5 Kd7 12.Ka7 Be2 13.Bd4 Bb5 14.Bc5 Bc6
+- (2.65) Depth: 26/43 00:01:51 216228kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Ke3
+- (2.63) Depth: 27/43 00:03:11 380041kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Ke3
+- (2.63) Depth: 27/43 00:03:23 402243kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kf4 Ke6
17.Bb4 Bb7
+- (2.62) Depth: 28/44 00:04:26 531769kN
2.Bb4 Bb5
+- (2.63) Depth: 28/44 00:04:30 538738kN
2.Bb4 Bb5 3.Kc3 Bc6 4.Ba3
+- (2.62) Depth: 28/44 00:04:44 567767kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kf4 Ke6
17.Bb4 Bb7
+- (2.62) Depth: 28/44 00:04:44 567767kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kf4 Ke6
17.Bb4 Bb7
+- (2.62) Depth: 28/45 00:04:50 580199kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kf4 Ke6
17.d7 Kxd7
+- (2.62) Depth: 29/45 00:05:34 668838kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kf4 Ke6
17.d7 Kxd7
+- (2.62) Depth: 29/45 00:05:44 690406kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kf4 Ke6
+- (2.62) Depth: 30/46 00:08:04 965465kN
2.Bb4 Bb5
+- (2.63) Depth: 30/46 00:08:12 981430kN
2.Bb4 Bb5 3.Kc3 Ke6 4.Kd4 Bc6 5.Kc5 Kd7 6.a6 Bg2 7.Kb6 Kc8 8.Ka7 Bh3 9.d7+ Bxd7
10.Ba5
+- (2.62) Depth: 30/46 00:08:56 1063647kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kf4 Ke6
+- (2.62) Depth: 30/46 00:08:56 1063647kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kf4 Ke6
+- (2.62) Depth: 30/46 00:09:14 1099505kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kd4 Ke6
17.Ba3 Bf3
+- (2.62) Depth: 31/46 00:10:57 1300817kN
2.Bc5 Bb5 3.Kc3 Bc6 4.Kd4 Ke6 5.a6 Bf3 6.a7 Bg2 7.Ba3 Ba8 8.Ke3 Bh1 9.Ke2 Ba8
10.Kd3 Bc6 11.Bc5 Bh1 12.Ke3 Kd7 13.Kd4 Ke6 14.Kd3 Ba8 15.Ke3 Kd7 16.Kd4 Ke6
17.Ba3 Bf3
+- (2.62) Depth: 31/46 00:11:21 1349381kN
(, MyTown 28.12.2004)
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Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.