Test position Bishop sac

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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Test position Bishop sac

Post by kgburcham »

18.Bxf7+

[D] 1rn2rk1/pq1b1pbp/1pn3p1/2PBp3/3N4/1Q2BN2/PP3PPP/3RK2R w K -

[White "David Bronstein"]
[Black "Anatoly S Lutikov"]
[Result "1-0"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Be2 Nxd5 5. d4 g6 6. c4
Nb6 7. Nc3 Bg7 8. c5 Nc8 9. d5 c6 10. Qb3 b6 11. Bf3 O-O
12. Be3 cxd5 13. Bxd5 Nc6 14. Rd1 Qc7 15. Nb5 Qb7 16. Nd4
Rb8 17. Ngf3 e5 18. Bxf7+ Rxf7 19. Nxc6 Bxc6 20. Rd8+ Bf8
21. Nxe5 bxc5 22. Bh6 c4 23. Qxb7 Rbxb7 24. Nxf7 Rxf7
25. Rxc8 Bxg2 26. Rg1 Bb7 27. Rxf8+ Rxf8 28. Bxf8 Kxf8
29. Rg5 1-0
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Ovyron
Posts: 4556
Joined: Tue Jul 03, 2007 4:30 am

Re: Test position Bishop sac

Post by Ovyron »

17.2 seconds for Pro Deo 1.6 BETA:

00:00:00.1 0.59 1 405 Nxc6 Bxc6 Bxc6 Qxc6
00:00:00.1 0.64 1 1190 Nb5
00:00:00.1 -0.21 2 1591 Nb5 bxc5
00:00:00.1 -0.21 2 1823 Nxc6
00:00:00.1 0.78 2 2016 Nxc6 Bxc6 O-O
00:00:00.1 0.78 3 4139 Nxc6 Bxc6 Bxc6 Qxc6 O-O
00:00:00.1 0.57 4 10436 Nxc6 Bxc6 Bxc6 Qxc6 O-O Ne7 cxb6 axb6
00:00:00.2 0.51 5 34424 Nxc6 Bxc6 Bxc6 Qxc6 O-O Qc7 Qd5 bxc5 Bxc5
00:00:00.2 0.35 6 80638 Nxc6 Bxc6 Bxc6 Qxc6 O-O Qc7 Qa3 bxc5 Bxc5 Re8
00:00:00.4 0.35 7 243149 Nxc6 Bxc6 Bxc6 Qxc6 O-O Qc7 Qa3 bxc5 Bxc5 Re8
00:00:00.7 0.47 8 604822 Nxc6 Bxc6 Bxc6 Qxc6 O-O Qc7 cxb6 Nxb6 Rc1 Qb7 Rfd1 Rfd8
00:00:01.9 0.50 9 1860272 Nxc6 Bxc6 Bxc6 Qxc6 Rc1 Qf6 c6 b5 O-O
00:00:04.5 0.54 10 4924760 Nxc6 Bxc6 Bxc6 Qxc6 Rc1 e4 Ng5 Qf6 Rc2 Qf5 Rd2 Re8
00:00:10.0 0.44 11 11492806 Nxc6 Bxc6 Bxc6 Qxc6 Rc1 e4 Ng5 Qf6 c6 Qxb2 c7 Rb7 Nxe4 Qxb3 axb3 Re8
00:00:17.2 0.44 11 20044596 Bxf7+
00:00:39.2 0.94 11 40616581 Bxf7+ Kh8 Nxc6 Bxc6 Bd5
00:00:59.0 0.91 12 61182224 Bxf7+ Kh8 Nxc6 Bxc6 Bd5
00:01:16.9 0.91 12 61182224 Bxf7+ Kh8 Nxc6 Bxc6 Bd5
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michiguel
Posts: 6401
Joined: Thu Mar 09, 2006 8:30 pm
Location: Chicago, Illinois, USA

Re: Test position Bishop sac

Post by michiguel »

kgburcham wrote:18.Bxf7+

[D] 1rn2rk1/pq1b1pbp/1pn3p1/2PBp3/3N4/1Q2BN2/PP3PPP/3RK2R w K -

[White "David Bronstein"]
[Black "Anatoly S Lutikov"]
[Result "1-0"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Be2 Nxd5 5. d4 g6 6. c4
Nb6 7. Nc3 Bg7 8. c5 Nc8 9. d5 c6 10. Qb3 b6 11. Bf3 O-O
12. Be3 cxd5 13. Bxd5 Nc6 14. Rd1 Qc7 15. Nb5 Qb7 16. Nd4
Rb8 17. Ngf3 e5 18. Bxf7+ Rxf7 19. Nxc6 Bxc6 20. Rd8+ Bf8
21. Nxe5 bxc5 22. Bh6 c4 23. Qxb7 Rbxb7 24. Nxf7 Rxf7
25. Rxc8 Bxg2 26. Rg1 Bb7 27. Rxf8+ Rxf8 28. Bxf8 Kxf8
29. Rg5 1-0
Gaviota struggles. It takes more than 9 minutes to see it.

Miguel

Code: Select all

setboard 1rn2rk1/pq1b1pbp/1pn3p1/2PBp3/3N4/1Q2BN2/PP3PPP/3RK2R w K -
d
+-----------------+
| . r n . . r k . |
| p q . b . p b p |
| . p n . . . p . |
| . . P B p . . . |    Castling: K
| . . . N . . . . |    ep: -
| . Q . . B N . . |
| P P . . . P P P |
| . . . R K . . R | [White]
+-----------------+

analyze
      1280   1:      0.0    +0.00  Nd4-e2   
      4127   2:      0.0    -0.10  Nd4xc6   Bd7xc6   
      4499   3       0.0      :-)  Nd4xc6   
     11074   3:      0.1    +0.63  Nd4xc6   Bd7xc6   O-O      
     27822   4:      0.2    +0.45  Nd4xc6   Bd7xc6   Bd5xc6   Qb7xc6   
                                   O-O      e5-e4    
     77027   5:      0.5    +0.55  Nd4xc6   Bd7xc6   Bd5xc6   Qb7xc6   
                                   O-O      Rb8-b7   Qb3-c2   
    203432   6:      1.3    +0.46  Nd4xc6   Bd7xc6   Bd5xc6   Qb7xc6   
                                   O-O      Qc6-c7   Qb3-c3   Nc8-e7   
    690833   7:      2.6    +0.39  Nd4xc6   Bd7xc6   Bd5xc6   Qb7xc6   
                                   Qb3-d5   Qc6xd5   Rd1xd5   e5-e4    
                                   Be3-f4   Nc8-e7   
    934557   8       3.3    +0.42  Nd4xc6   Bd7xc6   c5xb6    Nc8xb6   
                                   Bd5xc6   Qb7xc6   Rd1-c1   Qc6-d5   
                                   Qb3xd5   Nb6xd5   
   1622550   8:      5.0    +0.42  Nd4xc6   Bd7xc6   c5xb6    Nc8xb6   
                                   Bd5xc6   Qb7xc6   Rd1-c1   Qc6-d5   
                                   Qb3xd5   Nb6xd5   
   2221530   9       6.4    +0.39  Nd4xc6   Bd7xc6   Bd5xc6   Qb7xc6   
                                   O-O      e5-e4    Nf3-d4   Qc6-c7   
                                   Nd4-b5   Qc7-e5   Be3-d4   
   5259858   9:     14.0    +0.39  Nd4xc6   Bd7xc6   Bd5xc6   Qb7xc6   
                                   O-O      e5-e4    Nf3-d4   Qc6-c7   
                                   Nd4-b5   Qc7-e5   Be3-d4   
   6376105  10      16.6    +0.44  Nd4xc6   Bd7xc6   Bd5xc6   Qb7xc6   
                                   O-O      e5-e4    Nf3-d4   Qc6-f6   
                                   g2-g3    Rf8-d8   Be3-f4   Rb8-b7   
  11185862  10:     28.1    +0.44  Nd4xc6   Bd7xc6   Bd5xc6   Qb7xc6   
                                   O-O      e5-e4    Nf3-d4   Qc6-f6   
                                   g2-g3    Rf8-d8   Be3-f4   Rb8-b7   
  17173560  11      42.0    +0.34  Nd4xc6   Bd7xc6   Bd5xc6   Qb7xc6   
                                   O-O      Rb8-b7   c5xb6    Nc8xb6   
                                   Rd1-c1   Qc6-d5   Rc1-c3   e5-e4    
                                   Qb3xd5   Nb6xd5   
  24037750  11      58.3    +0.46  Bd5xf7   Rf8xf7   Nd4xc6   Qb7xc6   
                                   Nf3-g5   Bd7-e8   Rd1-d8   Bg7-f8   
                                   O-O      Rb8-b7   Ng5xf7   Be8xf7   
  36438848  11:     88.8    +0.46  Bd5xf7   Rf8xf7   Nd4xc6   Qb7xc6   
                                   Nf3-g5   Bd7-e8   Rd1-d8   Bg7-f8   
                                   O-O      Rb8-b7   Ng5xf7   Be8xf7   
  54577699  12     132.1    +0.28  Bd5xf7   Rf8xf7   Nd4xc6   Qb7xc6   
                                   Nf3-g5   Bd7-e8   Rd1-d8   Bg7-f8   
                                   O-O      a7-a5    Ng5xf7   Be8xf7   
                                   Qb3-c3   Qc6-f6   
  70815830  12     168.9    +0.31  Nd4xc6   Bd7xc6   O-O      Bc6xd5   
                                   Qb3xd5   Qb7xd5   Rd1xd5   e5-e4    
                                   Be3-f4   Rb8-a8   Nf3-e5   b6xc5    
                                   Rd5xc5   Nc8-b6   
 145777279  12:    345.0    +0.31  Nd4xc6   Bd7xc6   O-O      Bc6xd5   
                                   Qb3xd5   Qb7xd5   Rd1xd5   e5-e4    
                                   Be3-f4   Rb8-a8   Nf3-e5   b6xc5    
                                   Rd5xc5   Nc8-b6   
 206443787  13     482.9    +0.25  Nd4xc6   Bd7xc6   O-O      Bc6xd5   
                                   Qb3xd5   Nc8-e7   Qd5xb7   Rb8xb7   
                                   c5xb6    e5-e4    Nf3-g5   a7xb6    
                                   Rd1-d6   Bg7xb2   Ng5xe4   
 241869119  13     564.4      :-)  Bd5xf7   
 615647978  13    1454.0    +1.03  Bd5xf7   Kg8-h8   Nd4xc6   Bd7xc6   
                                   Bf7-d5   Bc6xd5   Qb3xd5   Qb7-e7   
                                   Qd5-d7   e5-e4    Qd7xe7   Nc8xe7   
                                   Nf3-g5   Bg7xb2   c5xb6    a7xb6    
                                   Ng5xe4   
 740115011  13:   1736.0    +1.03  Bd5xf7   Kg8-h8   Nd4xc6   Bd7xc6   
                                   Bf7-d5   Bc6xd5   Qb3xd5   Qb7-e7   
                                   Qd5-d7   e5-e4    Qd7xe7   Nc8xe7   
                                   Nf3-g5   Bg7xb2   c5xb6    a7xb6    
                                   Ng5xe4
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rightrook
Posts: 1452
Joined: Wed Mar 08, 2006 8:45 pm

Re: Test position Bishop sac

Post by rightrook »

Hiarcs 11.2

finds it in 3 seconds!

regards

Robert
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