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Subject: Re: A beautiful deep ending ( Bd6!! win for White! )

Author: Mike Byrne

Date: 19:50:03 09/05/02

Go up one level in this thread


On September 05, 2002 at 22:30:51, Mike Byrne wrote:

>On September 05, 2002 at 22:23:18, Tanya Deborah wrote:
>
>>
>>
>>
>>[D] 8/1Pp5/7p/1K5k/2p2b1p/Bb5B/5P2/8 w - - 0 1
>>wKb5,Ba3,h3,Pb7,f2/bKh5,Bb3,f4,Pc4,c7,h4,h6
>>
>>
>>
>>Hi CCC!
>>
>>This is a very beautiful ending of Bondarenko vrs Kakovin game played in 1957.
>>
>>
>>White plays and won a great ending!! Bondarenko played the untonished move Bd6!!
>>and won !!!
>>
>>
>>Any program can find this diabolic move? :-) Analysis and posts are welcome.
>>
>>
>>
>>This is the winner main Line:
>>
>>
>>1.Ad6!! Axd6 2.Rc6 Aa4+ 3.Rd5 Ah2 4.f4!(another pretty move) Axf4 5.Re4 1-0 And
>>Black is lost!!
>>
>>
>>But the game continued... 6.Ac6+ 6.Rf5! Axb7 7.Ag4# MATE 1-0  (Very pretty!)
>>
>>
>>
>>Best Regards!
>>
>>Tanya Deborah.
>
>Crafty 17.16 SE
>
>Bd6! in 1:42
>
>Black(1): 8/1Pp5/7p/1K5k/2p2b1p/Bb5B/5P2/8 w - - 0 1
>White(1): go
>end-game phase
>              clearing hash tables
>              time surplus  29.92  time limit 100:00 (100:00)
>         nss  depth   time  score   variation (1)
>                2     0.00   0.58   1. b8=N c3 2. Nc6
> 2     0.00   0.61                   2     0.00  13/24*  1. 1. Bc5 c6+ 2. Kxc6
>                2     0.00     ++   1. Bg4+!!
>                2->   0.01   0.97   1. Bg4+
>                3     0.01     --   1. Bg4+
>                3     0.01  -4.79   1. Bg4+ Kxg4 2. Kc6 Ba4+ 3. Kc5 c6
>                                    4. Kxc4
>                3     0.01     ++   1. b8=N!!
>                3     0.01   0.38   1. b8=N Kg6 2. Nc6 c3
>                3     0.01     ++   1. Kc6!!
>                3     0.01   0.79   1. Kc6 Ba4+ 2. Kc5 c6 3. Kxc4
>                3->   0.03   0.79   1. Kc6 Ba4+ 2. Kc5 c6 3. Kxc4
>                4     0.03   0.79   1. Kc6 Ba4+ 2. Kc5 c6 3. Kxc4
>                4->   0.03   0.79   1. Kc6 Ba4+ 2. Kc5 c6 3. Kxc4
>                5     0.04   0.62   1. Kc6 Ba4+ 2. Kd5 c6+ 3. Kxc4 Bb8
>                                    4. Bc5 Kg6
>                5->   0.04   0.62   1. Kc6 Ba4+ 2. Kd5 c6+ 3. Kxc4 Bb8
>                                    4. Bc5 Kg6
>                6     0.06   0.62   1. Kc6 Ba4+ 2. Kd5 c6+ 3. Kxc4 Bb8
>                                    4. Bc5 Kg6
>         (4)    6->   0.09   0.62   1. Kc6 Ba4+ 2. Kd5 c6+ 3. Kxc4 Bb8
>                                    4. Bc5 Kg6
>         (3)    7     0.11   0.79   1. Kc6 Ba4+ 2. Kd5 c6+ 3. Kxc4 Bb5+
>                                    4. Kc5 Bb8 5. Bg2 Ba7+ 6. Kd6
>                7     0.18     ++   1. Bf8!!
>         (2)    7->   0.22   1.18   1. Bf8N
>                8     0.43   1.25   1. Bf8 c6+ 2. Kc5 Bb8 3. Bd6 Ba7+ 4.
>                                    Kxc6 c3 5. b8=Q Bxb8 6. Bxb8
>                8->   0.48   1.25   1. Bf8 c6+ 2. Kc5 Bb8 3. Bd6 Ba7+ 4.
>                                    Kxc6 c3 5. b8=Q Bxb8 6. Bxb8
>                9     0.62   0.98   1. Bf8 c6+ 2. Kc5 Bb8 3. Bd6 Ba7+ 4.
>                                    Kxc6 c3 5. b8=Q Bxb8 6. Bxb8 c2 7.
>                                    Bf4
>                9->   0.76   0.98   1. Bf8 c6+ 2. Kc5 Bb8 3. Bd6 Ba7+ 4.
>                                    Kxc6 c3 5. b8=Q Bxb8 6. Bxb8 c2 7.
>                                    Bf4
>               10     1.07   1.03   1. Bf8 c6+ 2. Kc5 Bb8 3. Bd6 Ba7+ 4.
>                                    Kb4 Kg5 5. b8=Q Bxb8 6. Bxb8 Kf6 7.
>                                    Kc3 c5
>         (2)   10->   1.70   1.03   1. Bf8 c6+ 2. Kc5 Bb8 3. Bd6 Ba7+ 4.
>                                    Kb4 Kg5 5. b8=Q Bxb8 6. Bxb8 Kf6 7.
>                                    Kc3 c5
>               11     2.31   1.03   1. Bf8 c6+ 2. Kc5 Bb8 3. Bd6 Ba7+ 4.
>                                    Kb4 Kg5 5. b8=Q Bxb8 6. Bxb8 Kf6 7.
>                                    Kc3 c5
>         (2)   11->   3.43   1.03   1. Bf8 c6+ 2. Kc5 Bb8 3. Bd6 Ba7+ 4.
>                                    Kb4 Kg5 5. b8=Q Bxb8 6. Bxb8 Kf6 7.
>                                    Kc3 c5
>               12    21.82   1.35   1. Bf8 c3 2. b8=Q c6+ 3. Kb4 Bxb8 4.
>                                    Kxb3 Be5 5. Be7 Bd4 6. Kc2 c5 7. f4
>                                    c4 8. f5
>               12    38.45     ++   1. Be7!!
>         (3)   12->  39.29   1.74   1. Be7
>         (2)   13     1:18   1.76   1. Be7 c3 2. b8=Q c6+ 3. Kb4 Bxb8 4.
>                                    Kxb3 Be5 5. f4 Bd4 6. Kc2 Kg6 7. Bxh4
>                                    Bf6 8. Bg3 Bd4
>               13     1:42     ++   1. Bd6!!
>         (3)   13->   1:50   2.15   1. Bd6
>         (2)   14     2:34   2.50   1. Bd6 Bxd6 2. Kc6 Ba4+ 3. Kd5 Bh2
>                                    4. f4 Bxf4 5. Ke4 Bd6 6. b8=Q Bc6+
>                                    7. Ke3 Bd5 8. Qe8+ Kg5 9. Qd8+ Kh5
>                                    10. Qh8
>         (2)   14->   3:19   2.50   1. Bd6 Bxd6 2. Kc6 Ba4+ 3. Kd5 Bh2
>                                    4. f4 Bxf4 5. Ke4 Bd6 6. b8=Q Bc6+
>                                    7. Ke3 Bd5 8. Qe8+ Kg5 9. Qd8+ Kh5
>                                    10. Qh8
>               15     3:57   2.74   1. Bd6 Bxd6 2. Kc6 Ba4+ 3. Kd5 c3 4.
>                                    b8=Q c2 5. Qb2 Kg6 6. Qc1 Bb3+ 7. Ke4
>                                    h5 8. Qb2 Kh6 9. Qh8+ Kg6 10. Bf5+
>                                    Kf7 11. Qxh5+ Kg7 12. Qh7+ Kf8

Deep Fritz
Bd6!
25 seconds


New position
8/1Pp5/7p/1K5k/2p2b1p/Bb5B/5P2/8 w - - 0 1

Analysis by Deep Fritz:

1.Bg4+--
  +-  (1.75)   Depth: 4/8   00:00:00
1.Bg4+-- Kxg4 2.f3+
  ±  (0.75)   Depth: 4/11   00:00:00  1kN
1.Bg4+--
  ²  (0.31)   Depth: 5/10   00:00:00  2kN
1.Bg4+--
  ²  (0.31)   Depth: 5/10   00:00:00  2kN
1.Bg4+--
  ²  (0.31)   Depth: 5/10   00:00:00  2kN
1.Bg4+--
  ²  (0.31)   Depth: 5/10   00:00:00  2kN
1.Bg4+--
  ²  (0.31)   Depth: 5/10   00:00:00  2kN
1.Bg4+-- Kxg4 2.Kc6 Ba4+ 3.Kc5 c6 4.Kxc4
  -+  (-2.97)   Depth: 5/12   00:00:00  5kN
1.b8R c6+ 2.Kxc6 Bxb8 3.Kd5 c3+ 4.Ke4
  -+  (-2.56)   Depth: 5/14   00:00:00  6kN
1.Kc6!
  -+  (-2.53)   Depth: 5/14   00:00:00  6kN
1.Kc6!
  -+  (-2.53)   Depth: 5/14   00:00:00  6kN
1.Kc6!
  -+  (-2.53)   Depth: 5/14   00:00:00  6kN
1.Kc6!
  -+  (-2.53)   Depth: 5/14   00:00:00  6kN
1.Kc6!
  -+  (-2.53)   Depth: 5/14   00:00:00  6kN
1.Kc6!
  -+  (-2.53)   Depth: 5/14   00:00:00  6kN
1.Kc6! Ba4+ 2.Kc5 c6 3.Kxc4 Bb5+ 4.Kd4 Kg6
  ±  (0.75)   Depth: 5/14   00:00:00  8kN
1.Kc6 Ba4+ 2.Kc5 c6 3.Kxc4 Bb5+ 4.Kd4 Kg6
  ±  (0.75)   Depth: 6/16   00:00:00  11kN
1.Kc6 Ba4+ 2.Kd5 c6+ 3.Kxc4 Bb5+ 4.Kc5 Bb8 5.Bb2 Kg5
  ±  (0.84)   Depth: 7/16   00:00:00  24kN
1.Kc6 Ba4+ 2.Kd5 c6+ 3.Kxc4 Bb5+ 4.Kc5 Bb8 5.Be6 Ba7+ 6.Kd6 Bb8+
  ±  (0.81)   Depth: 8/18   00:00:00  53kN
1.Kc6 Ba4+ 2.Kd5 c6+ 3.Kxc4 Bb5+ 4.Kc5 Bb8 5.Bb2 Ba7+ 6.Kb4 Bb8
  ±  (0.81)   Depth: 9/20   00:00:00  128kN
1.Kc6 Ba4+ 2.Kc5 c6 3.Kxc4 Bb8 4.Bc5 Bb5+ 5.Kd4 Ba6 6.Bc8 h3
  ±  (0.84)   Depth: 10/22   00:00:00  372kN
1.Kc6 Ba4+ 2.Kd5 c6+ 3.Kxc4 Bb8 4.Kc5 Bb5
  ±  (1.06)   Depth: 11/26   00:00:00  1026kN
1.Kc6 Ba4+ 2.Kc5 c6 3.Kxc4 Bb8 4.Kc5 Ba7+ 5.Kd6 Bb8+ 6.Ke7 Ba7
  ±  (1.06)   Depth: 12/24   00:00:02  2890kN
1.Kc6 Ba4+ 2.Kc5 c6 3.Kxc4 Bb8 4.Kc5 Ba7+ 5.Kd6 Bb8+ 6.Ke7 Ba7
  ±  (1.06)   Depth: 13/27   00:00:03  4766kN
1.Kc6 Ba4+ 2.Kc5 c6 3.Kxc4 Bb8 4.Kc5 Ba7+ 5.Kd6 Bb8+ 6.Ke7 Ba7
  ±  (1.13)   Depth: 14/30   00:00:07  10414kN
1.Kc6 Ba4+ 2.Kc5 c6 3.Kxc4 Bb8 4.Kc5 Kg5 5.Kb6 Kf6 6.Bg2 h3
  ±  (1.22)   Depth: 15/31   00:00:20  27848kN
1.Bd6!
  ±  (1.25)   Depth: 15/31   00:00:25  34062kN
1.Bd6! Bxd6 2.Kc6 Ba4+ 3.Kd5 Bh2 4.f4 Bxf4 5.Ke4 Bd6 6.b8Q Bc6+
  +-  (2.16)   Depth: 15/31   00:00:26  35727kN
1.Bd6!
  +-  (2.47)   Depth: 16/31   00:00:37  48915kN
1.Bd6!
  +-  (2.78)   Depth: 17/33   00:01:04  83473kN, tb=7
1.Bd6! Bxd6 2.Kc6 Ba4+ 3.Kd5 Bh2 4.f4 Bxf4 5.Ke4 Bg3 6.b8Q Bc2+
  +-  (3.06)   Depth: 17/34   00:01:15  97049kN, tb=13

(Byrne, Secane, PA 05.09.2002)

Deep Junior did not see Bd6 within 3 minutes.



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