Gligoric-Smyslov, 1959

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Eelco de Groot
Posts: 4268
Joined: Sun Mar 12, 2006 1:40 am
Location: Groningen

Re: Gligoric-Smyslov, 1959

Post by Eelco de Groot » Thu Mar 05, 2015 3:28 am

michiguel wrote:
I forgot Gaviota calculating for 3 days or so. I founds Rb3, but then it changes its mind. Score does not move much.
This seems a position in which black has advantage, but it is blockaded enough so there is not way for black to win. Most likely a draw.

Miguel


40894592404 27 69291.9 +0.02 Bb7 17.Rg1 Ra8 18.h4 Qf7 19.h5 Bf8
20.Qg3 Bc8 21.Qf3 Bd7 22.Ng3 Kh8
23.hxg6 hxg6 24.Nf1 Bh6 25.Rg3 Rbb8 [>]
41945195975 27: 71021.6 +0.02 Bb7 17.Rg1 Ra8 18.h4 Qf7 19.h5 Bf8
20.Qg3 Bc8 21.Qf3 Bd7 22.Ng3 Kh8
23.hxg6 hxg6 24.Nf1 Bh6 25.Rg3 Rbb8 [>]
45896281357 28 77702.4 -0.00 Bb7 17.Rg1 Ra8 18.h4 Qf7 19.h5 Bf8
20.Qg3 Bc8 21.Qf3 Bd7 22.Ng3 Kh8
23.hxg6 hxg6 24.Nf1 Bh6 25.Rg3 Bc6 [>]
79021011954 28 132918.9 +0.22 Bc6 17.h4 [>]
100836617015 28: 170029.7 +0.22 Bc6 17.h4 [>]
174051051406 29 292103.9 +0.22 Bc6 17.h4 Ra8 18.Rg1 Qf7 19.Ba3 a4
20.h5 Bd7 21.Raa1 gxh5 22.Rab1 Rg6
23.Rb7 [>][/code]
Rainbow Serpent starts playing 31... Bc6 around the same depth, depth 26. But Stockfish depths are a bit more reduced and in RS case also hollow depths :)

26/32 0:46 -0.48++ 31...Rb3 (99.042.955) 2148

26/32 0:47 -0.54-- 31...Rb3 32.Ra1 (102.223.657) 2150


26/32 0:56 -0.48++ 31...Bc6 (122.744.772) 2156

26/32 1:04 -0.34++ 31...Bc6 (138.530.626) 2155

26/32 1:05 -0.40 31...Bc6 32.h4 a4 33.h5 Qf7 34.Rg1 Ra8
35.Ba3 Bf8 36.Bc5 Rba6 37.Ra3 Bd7
38.Rg3 Be7 39.hxg6 Rxg6 40.Bxe7 Nxe7
41.Qg2 Raa6 42.Rxg6+ hxg6 43.Qb7 Qh7+
44.Kg1 Qh4 (141.400.266) 2155

27/32 1:07 -0.34++ 31...Bc6 (146.454.822) 2155

27/32 1:11 -0.28++ 31...Bc6 (154.347.271) 2159

27/32 1:12 -0.34-- 31...Bc6 32.Rg1 (157.057.635) 2158

27/32 1:15 -0.26++ 31...Bc6 (162.814.467) 2154

27/32 1:32 -0.37-- 31...Bc6 32.h4 (199.064.374) 2145

27/32 1:36 -0.23 31...Bc6 32.h4 a4 33.h5 Qf7 34.Qg3 Ra8
35.Ba3 Bf8 36.Bc5 Rba6 37.Rg1 Bd7
38.Rb1 Bc6 39.Bxf8 Rxf8 40.Kg1 a3
41.Rba1 Rfa8 42.Kf2 Qg7 43.Rb1 Qh6
44.Bxf5 Qxh5 (207.412.312) 2145

28/32 1:39 -0.29-- 31...Bc6 32.h4 (214.504.007) 2147

28/32 1:43 -0.24 31...Bc6 32.Rg1 a4 33.Bxa4 Ra6
34.Bb3 Qa7 35.Rxa6 Qxa6 36.Bd1 Qa1
37.Qg3 Ra8 38.h4 Ra2 39.Kh3 Qb1
40.h5 Qd3 41.hxg6 hxg6 42.Kh4 Rxe2
43.Qxd3 cxd3 44.Bxe2 dxe2 (223.314.367) 2148

.
.
.

35/42 15:13 0.00 31...Bc6 32.h4 Ra8 33.h5 Qf7 34.Rg1 a4
35.hxg6 hxg6 36.Rg3 Bf8 37.Kg1 a3
38.Rh3 Bb7 39.Qh2 Qg7 40.Rg3 Bc8
41.Qg2 Nc7 42.Rh3 Bb7 43.Qh2 Be7
44.Qg3 Bc6 (1.986.281.982) 2173


best move: Ba8-c6 time: 15:23.182 min n/s: 2.173.614 nodes: 2.005.160.912
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan

Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 10:41 am

Re: Gligoric-Smyslov, 1959

Post by Lyudmil Tsvetkov » Thu Mar 05, 2015 7:41 am

michiguel wrote:
Lyudmil Tsvetkov wrote:Here a nice position to try your engines:

[d]b2r2k1/2q3bp/1r4p1/p2nPp2/2pP1P2/2P4P/R1B1NQ1K/2B2R2 b - - 1 31

How does Smyslov win?
Or is there actually a win?
I forgot Gaviota calculating for 3 days or so. I founds Rb3, but then it changes its mind. Score does not move much.
This seems a position in which black has advantage, but it is blockaded enough so there is not way for black to win. Most likely a draw.

Miguel

Code: Select all

+-----------------+
| b . . r . . k . | [Black]
| . . q . . . b p |
| . r . . . . p . |
| p . . n P p . . |    Castling: 
| . . p P . P . . |    ep: -
| . . P . . . . P |
| R . B . N Q . K |
| . . B . . R . . |
+-----------------+

analyze
iterative deepening --> start, thread=0
set timer to infinite
        89   1:      0.0    +0.13  Re6
       169   2:      0.0    +0.09  Re6 17.Ra4
       282   3:      0.0    +0.19  Re6 17.Ra4 Bb7
       509   4:      0.0    +0.24  Re6 17.Ra4 Bb7 18.Re1
      1097   5:      0.0    +0.14  Re6 17.Ra4 Bb7 18.Re1 Rb8
      7486   6:      0.0    -0.07  Ra6 17.Ra4 Bb7 18.Bd2 Rb8 19.Rb1
     13915   7:      0.0    +0.08  Ra6 17.Ba3 Bc6 18.Bc5 Qf7 19.Qh4 Rb8
     15556   8       0.0    -0.01  Ra6 17.Ba3 Bc6 18.Bc5 Qf7 19.Qh4 Raa8
                                   20.Raa1
     24621   8:      0.1    -0.01  Ra6 17.Ba3 Bc6 18.Bc5 Qf7 19.Qh4 Raa8
                                   20.Raa1
     29104   9       0.1    +0.02  Ra6 17.Ba3 Bc6 18.Bc5 a4 19.Rfa1 Qd7
                                   20.Rb2 Qe6
     45845   9:      0.1    +0.02  Ra6 17.Ba3 Bc6 18.Bc5 a4 19.Rfa1 Qd7
                                   20.Rb2 Qe6
     62210  10       0.2    +0.04  Ra6 17.Ba3 Bc6 18.Raa1 a4 19.Rfe1 Qf7
                                   20.Bd6 Ra5 21.Qh4
     75834  10:      0.2    +0.04  Ra6 17.Ba3 Bc6 18.Raa1 a4 19.Rfe1 Qf7
                                   20.Bd6 Ra5 21.Qh4
     95484  11       0.3    +0.07  Ra6 17.Ba3 Bc6 18.Raa1 a4 19.Rfe1 Qf7
                                   20.Bd6 Rda8 21.Ra3 Rb6
    139354  11:      0.4    +0.07  Ra6 17.Ba3 Bc6 18.Raa1 a4 19.Rfe1 Qf7
                                   20.Bd6 Rda8 21.Ra3 Rb6
    171557  12       0.4    +0.07  Ra6 17.Ba3 Bc6 18.Raa1 a4 19.Rfb1 [>]
    255229  12:      0.6    +0.07  Ra6 17.Ba3 Bc6 18.Raa1 a4 19.Rfb1 [>]
    351368  13       0.7    +0.08  Ra6 17.Ba3 Bc6 18.Raa1 a4 19.Rfb1 Qf7
                                   20.Bd6 Qe6 21.Kg1 Rda8 22.Ra3 Rb6
                                   23.Rxb6 Nxb6
    419192  13:      0.9    +0.08  Ra6 17.Ba3 Bc6 18.Raa1 a4 19.Rfb1 Qf7
                                   20.Bd6 Qe6 21.Kg1 Rda8 22.Ra3 Rb6
                                   23.Rxb6 Nxb6
   1815130  14       3.2    +0.00  Ra6 17.h4 Bf8 [>]
   2377472  14:      4.1    +0.00  Ra6 17.h4 Bf8 [>]
   5330864  15       9.0    -0.11  Ra6 17.Rg1 Bc6 18.h4 Qf7 19.h5 Bf8
                                   20.Ba3 Bxa3 21.Rxa3 Rb8 22.Rg5 Qe7 [>]
   5858810  15       9.9    -0.09  Rb3 17.Bxb3 cxb3 18.Ra4 Bf8 19.c4 Nb6
                                   20.Rxa5 Qxc4 21.Ra7 Bd5 22.Rd1 h6
                                   23.Bb2 Qc2
   7504596  15      12.5    +0.13  Rbb8 17.Ra4 Rb5 18.Ra1 Bc6 19.Ba3 Qd7
                                   20.Ra2 Rdb8 21.Bd6 Rb2 22.Rxa5 Rxc2
                                   23.Bxb8 Nxc3
   7559028  15:     12.6    +0.13  Rbb8 17.Ra4 Rb5 18.Ra1 Bc6 19.Ba3 Qd7
                                   20.Ra2 Rdb8 21.Bd6 Rb2 22.Rxa5 Rxc2
                                   23.Bxb8 Nxc3
   7853353  16      13.0    +0.11  Rbb8 17.Ra4 Rb5 18.Ra1 Bc6 19.Ba3 Qd7
                                   20.Rfb1 Rxb1 21.Bxb1 a4 22.Ba2 Bb5
                                   23.Bd6 Ba6 24.Rb1
   8344600  16:     13.7    +0.11  Rbb8 17.Ra4 Rb5 18.Ra1 Bc6 19.Ba3 Qd7
                                   20.Rfb1 Rxb1 21.Bxb1 a4 22.Ba2 Bb5
                                   23.Bd6 Ba6 24.Rb1
   9153570  17      15.0    +0.10  Rbb8 17.Ra4 Rb5 18.Ra1 Bc6 19.Ba3 Qd7
                                   20.Rfb1 Rxb1 21.Bxb1 a4 22.Ba2 Bb5
                                   23.Rb1 Ra8 24.Qf3 Ba6
  12560749  17:     20.6    +0.10  Rbb8 17.Ra4 Rb5 18.Ra1 Bc6 19.Ba3 Qd7
                                   20.Rfb1 Rxb1 21.Bxb1 a4 22.Ba2 Bb5
                                   23.Rb1 Ra8 24.Qf3 Ba6
  17396891  18      28.8    +0.05  Rbb8 17.Ra4 Rb5 18.Ra1 Bc6 19.Rg1 Rbb8
                                   20.h4 Re8 21.h5 Kf7 22.Ba3 Qd8 23.Rab1
                                   Rxb1 24.Rxb1 a4 25.Bd6 Nc7 26.hxg6+
                                   hxg6
  23287888  18      38.6    +0.05  Rb3 17.Bxb3 cxb3 18.Ra1 Rc8 [>]
  25455027  18:     42.3    +0.05  Rb3 17.Bxb3 cxb3 18.Ra1 Rc8 [>]
  44048701  19      73.1    +0.11  Rb3 17.Ra4 Rb5 18.Rg1 Nb6 19.Ra1 Bd5
                                   20.Ba3 Qc6 21.Rgb1 Rb3 22.Qe1 Rxb1
                                   23.Rxb1 Bf3 24.Bd6 Nd5 25.Qh4 Re8
  46923728  19:     77.7    +0.11  Rb3 17.Ra4 Rb5 18.Rg1 Nb6 19.Ra1 Bd5
                                   20.Ba3 Qc6 21.Rgb1 Rb3 22.Qe1 Rxb1
                                   23.Rxb1 Bf3 24.Bd6 Nd5 25.Qh4 Re8
  78710954  20     131.2    +0.00  Rb3 17.Ra1 Nxc3 18.Bxb3 cxb3 19.Nxc3
                                   Qxc3 20.Bd2 Qc2 21.Rac1 Qa2 22.Ra1 Qc2
  97649463  20:    163.3    +0.00  Rb3 17.Ra1 Nxc3 18.Bxb3 cxb3 19.Nxc3
                                   Qxc3 20.Bd2 Qc2 21.Rac1 Qa2 22.Ra1 Qc2
 126779497  21     213.5    -0.00  Rb3 17.Ra1 Nxc3 18.Bxb3 cxb3 19.Nxc3
                                   Qxc3 20.Bb2 [>]
 199694832  21:    340.0    -0.00  Rb3 17.Ra1 Nxc3 18.Bxb3 cxb3 19.Nxc3
                                   Qxc3 20.Bb2 [>]
 284491875  22     488.4    -0.11  Rb3 17.Ra1 Bb7 [>]
 406574903  22     699.8    -0.11  Rbb8 17.Rg1 Rb3 [>]
 482956843  22     833.6    -0.01  Ra6 17.h4 Bc6 18.h5 Qf7 19.Rg1 Bf8
                                   20.Qh4 Rda8 21.hxg6 hxg6 22.Rg3 Qh7
                                   23.Qxh7+ Kxh7 24.Rh3+ Kg7 25.Ba3 Bxa3
                                   26.Rxa3 Bd7 27.Kg3 a4
 629558012  22:   1089.5    -0.01  Ra6 17.h4 Bc6 18.h5 Qf7 19.Rg1 Bf8
                                   20.Qh4 Rda8 21.hxg6 hxg6 22.Rg3 Qh7
                                   23.Qxh7+ Kxh7 24.Rh3+ Kg7 25.Ba3 Bxa3
                                   26.Rxa3 Bd7 27.Kg3 a4
1085592773  23    1904.7    +0.12  Ra6 17.h4 Rb8 18.h5 Rb3 19.Qg3 a4
                                   20.Ra1 Ne7 21.Ba3 Be4 22.Bd6 Qd7
                                   23.hxg6 hxg6 24.Bxb3 cxb3 25.c4 b2
                                   26.Rab1 Bxb1 27.Rxb1 Nc8 28.Rxb2 Nxd6
                                   29.exd6 Qxd6
1139655036  23:   1998.6    +0.12  Ra6 17.h4 Rb8 18.h5 Rb3 19.Qg3 a4
                                   20.Ra1 Ne7 21.Ba3 Be4 22.Bd6 Qd7
                                   23.hxg6 hxg6 24.Bxb3 cxb3 25.c4 b2
                                   26.Rab1 Bxb1 27.Rxb1 Nc8 28.Rxb2 Nxd6
                                   29.exd6 Qxd6
1482749745  24    2595.0    +0.12  Ra6 17.h4 Rb8 18.h5 Rb3 19.Qg3 a4
                                   20.Ra1 Ne7 21.Ba3 Be4 22.Bd6 Qd7
                                   23.hxg6 hxg6 24.Bxb3 cxb3 25.c4 b2
                                   26.Rab1 Bxb1 27.Rxb1 Nc8 28.Rxb2 Nxd6
                                   29.exd6 Qxd6
1668299216  24:   2913.8    +0.12  Ra6 17.h4 Rb8 18.h5 Rb3 19.Qg3 a4
                                   20.Ra1 Ne7 21.Ba3 Be4 22.Bd6 Qd7
                                   23.hxg6 hxg6 24.Bxb3 cxb3 25.c4 b2
                                   26.Rab1 Bxb1 27.Rxb1 Nc8 28.Rxb2 Nxd6
                                   29.exd6 Qxd6
2345626361  25    4085.2    +0.01  Ra6 17.h4 a4 18.h5 Bc6 19.Rg1 Qf7
                                   20.Rg3 Nc7 21.hxg6 hxg6 22.Qg1 Rda8 [>]
3346038452  25:   5797.1    +0.01  Ra6 17.h4 a4 18.h5 Bc6 19.Rg1 Qf7
                                   20.Rg3 Nc7 21.hxg6 hxg6 22.Qg1 Rda8 [>]
5395390459  26    9303.6    +0.15  Ra6 17.Rg1 Bc6 18.h4 [>]
5887804994  26:  10103.6    +0.15  Ra6 17.Rg1 Bc6 18.h4 [>]
8085359532  27   13824.5    +0.01  Ra6 17.Rg1 Bc6 18.h4 Qf7 19.h5 Bf8
                                   20.Qh4 Rda8 [>]
40894592404  27   69291.9    +0.02  Bb7 17.Rg1 Ra8 18.h4 Qf7 19.h5 Bf8
                                   20.Qg3 Bc8 21.Qf3 Bd7 22.Ng3 Kh8
                                   23.hxg6 hxg6 24.Nf1 Bh6 25.Rg3 Rbb8 [>]
41945195975  27:  71021.6    +0.02  Bb7 17.Rg1 Ra8 18.h4 Qf7 19.h5 Bf8
                                   20.Qg3 Bc8 21.Qf3 Bd7 22.Ng3 Kh8
                                   23.hxg6 hxg6 24.Nf1 Bh6 25.Rg3 Rbb8 [>]
45896281357  28   77702.4    -0.00  Bb7 17.Rg1 Ra8 18.h4 Qf7 19.h5 Bf8
                                   20.Qg3 Bc8 21.Qf3 Bd7 22.Ng3 Kh8
                                   23.hxg6 hxg6 24.Nf1 Bh6 25.Rg3 Bc6 [>]
79021011954  28  132918.9    +0.22  Bc6 17.h4 [>]
100836617015  28: 170029.7    +0.22  Bc6 17.h4 [>]
174051051406  29  292103.9    +0.22  Bc6 17.h4 Ra8 18.Rg1 Qf7 19.Ba3 a4
                                   20.h5 Bd7 21.Raa1 gxh5 22.Rab1 Rg6
                                   23.Rb7 [>]
It finds Ra6 - that is good.

But not h5 on white's h4 - and that is essential part of black strategy, not to allow white any attacking chances.

Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 10:41 am

Re: Gligoric-Smyslov, 1959

Post by Lyudmil Tsvetkov » Thu Mar 05, 2015 7:52 am

Lyudmil Tsvetkov wrote:
zullil wrote:
Lyudmil Tsvetkov wrote: For the time being, in your main line, after Bd6 I deviate with Rb7 instead of Rbb6, hoping to claim an easy victory soon. :)

[d]b7/1r3q1k/r2B2pb/p2nPp1p/2pP1P1P/2P3QN/R1B4K/5R2 w - - 0 3
SF plays Rg1, and says Black already has a very small advantage:

[D]b7/1r3q1k/r2B2pb/p2nPp1p/2pP1P1P/2P3QN/R1B4K/6R1 b - - 1 3
Are you serious, what depth, 40 days seem like a very short time. :)

I will take my time anyway, as I am not as tireless as SF.

Will answer in due course, hopefully not very long from now.
As I told you, the move might take some time, anyway, I am sure Louis will not be angry, as everyone of us has some 40 days on average to make a move, if Louis would be so kind not to disagree.

The move is of course obvious, no need for calculations: a4

[d]b7/1r3q1k/r2B2pb/3nPp1p/p1pP1P1P/2P3QN/R1B4K/6R1 w - - 0 2

I analysed this a bit, and that is one of very few positions I have encountered where middlegames and endgames with massive blocking and at least 6 passers at a time will quite frequently appear in most lines.

zullil
Posts: 6442
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: Gligoric-Smyslov, 1959

Post by zullil » Thu Mar 05, 2015 1:58 pm

Lyudmil Tsvetkov wrote: The move is of course obvious, no need for calculations: a4

[d]b7/1r3q1k/r2B2pb/3nPp1p/p1pP1P1P/2P3QN/R1B4K/6R1 w - - 0 2

I analysed this a bit, and that is one of very few positions I have encountered where middlegames and endgames with massive blocking and at least 6 passers at a time will quite frequently appear in most lines.
Stockfish says Ba3. Take as much time as you like. However, you might be competing against new and improved incarnations of SF with each move.

[D]b7/1r3q1k/r5pb/3nPp1p/p1pP1P1P/B1P3QN/R1B4K/6R1 b - - 1 2

Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 10:41 am

Re: Gligoric-Smyslov, 1959

Post by Lyudmil Tsvetkov » Thu Mar 05, 2015 3:04 pm

zullil wrote:
Lyudmil Tsvetkov wrote: The move is of course obvious, no need for calculations: a4

[d]b7/1r3q1k/r2B2pb/3nPp1p/p1pP1P1P/2P3QN/R1B4K/6R1 w - - 0 2

I analysed this a bit, and that is one of very few positions I have encountered where middlegames and endgames with massive blocking and at least 6 passers at a time will quite frequently appear in most lines.
Stockfish says Ba3. Take as much time as you like. However, you might be competing against new and improved incarnations of SF with each move.

[D]b7/1r3q1k/r5pb/3nPp1p/p1pP1P1P/B1P3QN/R1B4K/6R1 b - - 1 2
Just as I wanted to push a3 myself...

The most intriguing and beautiful lines happen to be after black pushes a pawn to a3.
As usual, all this will remain behind the scenes.

I will take more time on my next move, but now there is a single reasonable answer standing above the rest: Rb5

[d]b7/5q1k/r5pb/1r1nPp1p/p1pP1P1P/B1P3QN/R1B4K/6R1 w - - 0 2

zullil
Posts: 6442
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: Gligoric-Smyslov, 1959

Post by zullil » Thu Mar 05, 2015 4:33 pm

Lyudmil Tsvetkov wrote: I will take more time on my next move, but now there is a single reasonable answer standing above the rest: Rb5

[d]b7/5q1k/r5pb/1r1nPp1p/p1pP1P1P/B1P3QN/R1B4K/6R1 w - - 0 2
Raa1

[D]b7/5q1k/r5pb/1r1nPp1p/p1pP1P1P/B1P3QN/2B4K/R5R1 b - - 3 3

Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 10:41 am

Re: Gligoric-Smyslov, 1959

Post by Lyudmil Tsvetkov » Thu Mar 05, 2015 5:26 pm

zullil wrote:
Lyudmil Tsvetkov wrote: I will take more time on my next move, but now there is a single reasonable answer standing above the rest: Rb5

[d]b7/5q1k/r5pb/1r1nPp1p/p1pP1P1P/B1P3QN/R1B4K/6R1 w - - 0 2
Raa1

[D]b7/5q1k/r5pb/1r1nPp1p/p1pP1P1P/B1P3QN/2B4K/R5R1 b - - 3 3
Nc7

[d]b7/2n2q1k/r5pb/1r2Pp1p/p1pP1P1P/B1P3QN/2B4K/R5R1 w - - 0 3

zullil
Posts: 6442
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: Gligoric-Smyslov, 1959

Post by zullil » Thu Mar 05, 2015 5:31 pm

Lyudmil Tsvetkov wrote: Nc7
[d]b7/2n2q1k/r5pb/1r2Pp1p/p1pP1P1P/B1P3QN/2B4K/R5R1 w - - 0 3
SF expected this, and so has already searched a long time.

SF will play Ng5+, and after Bxg5, will play Qxg5. So you can reply from here:

[D]b7/2n2q1k/r5p1/1r2PpQp/p1pP1P1P/B1P5/2B4K/R5R1 b - - 0 5

Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 10:41 am

Re: Gligoric-Smyslov, 1959

Post by Lyudmil Tsvetkov » Thu Mar 05, 2015 5:43 pm

zullil wrote:
Lyudmil Tsvetkov wrote: Nc7
[d]b7/2n2q1k/r5pb/1r2Pp1p/p1pP1P1P/B1P3QN/2B4K/R5R1 w - - 0 3
SF expected this, and so has already searched a long time.

SF will play Ng5+, and after Bxg5, will play Qxg5. So you can reply from here:

[D]b7/2n2q1k/r5p1/1r2PpQp/p1pP1P1P/B1P5/2B4K/R5R1 b - - 0 5
Bd5

[d]8/2n2q1k/r5p1/1r1bPpQp/p1pP1P1P/B1P5/2B4K/R5R1 w - - 0 5

zullil
Posts: 6442
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: Gligoric-Smyslov, 1959

Post by zullil » Thu Mar 05, 2015 5:54 pm

Lyudmil Tsvetkov wrote: Bd5

[d]8/2n2q1k/r5p1/1r1bPpQp/p1pP1P1P/B1P5/2B4K/R5R1 w - - 0 5
Again, anticipated.

SF plays Rgd1

[D]8/2n2q1k/r5p1/1r1bPpQp/p1pP1P1P/B1P5/2B4K/R2R4 b - - 2 6

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