Where did I go wrong here?

General discussion about computer chess...
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Hagen
Posts: 121
Joined: Mon Jun 14, 2010 12:30 am

Where did I go wrong here?

Post by Hagen » Tue Jun 22, 2010 3:40 pm

[Event "?"]
[Site "?"]
[Date "2010.06.22"]
[Round "?"]
[White "Hagen"]
[Black "Rybka 3.Dynamic 1-cpu w32"]
[Result "0-1"]
[PlyCount "52"]
[EventDate "2010.??.??"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qc7 4. O-O Nf6 5. Re1 a6 6. Bxc6 dxc6 7. d3 e5 8. h3
Bd6 9. Bg5 h6 10. Be3 O-O 11. Nbd2 b6 12. a4 Rd8 13. Nc4 Be6 14. Nxd6 Qxd6 15.
Qd2 a5 16. Rad1 Bd7 17. Nh4 Be6 18. f4 exf4 19. Bxf4 Qd4+ 20. Be3 Qxa4 21. Bxh6
gxh6 22. Qxh6 Nh7 23. Ng6 Qd4+ 24. Kh1 Qf6 25. Rf1 Qxg6 26. Qxg6+ fxg6 0-1
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Hood
Posts: 200
Joined: Thu Jun 10, 2010 2:36 pm
Real Name: Krzych C.

Re: Where did I go wrong here?

Post by Hood » Tue Jun 22, 2010 5:05 pm

I think that opening selection was not the best. Human versus engine shall play more closed position.

rgds Hood
Smolensk 2010. Murder or accident... Cui bono ?

There are not bugs free programms. There are programms with undiscovered bugs.
Alleluia.
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royb
Posts: 44
Joined: Thu Jun 10, 2010 1:09 am

Re: Where did I go wrong here?

Post by royb » Tue Jun 22, 2010 5:32 pm

My brief look at this with an engine shows that Bxh6 was not advised and certainly Ng6 was considered a blunder. Before those moves, after ...Qd4+, Qe3 was preferred over Be3. It was at this point that Black's eval started climbing and by the time you played Bxh6, Black was already more than a pawn up.
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zullil
Posts: 82
Joined: Thu Jun 10, 2010 10:17 am
Real Name: Louis Zulli
Location: Pennsylvania, USA

Re: Where did I go wrong here?

Post by zullil » Tue Jun 22, 2010 5:34 pm

Hagen wrote:[Event "?"]
[Site "?"]
[Date "2010.06.22"]
[Round "?"]
[White "Hagen"]
[Black "Rybka 3.Dynamic 1-cpu w32"]
[Result "0-1"]
[PlyCount "52"]
[EventDate "2010.??.??"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qc7 4. O-O Nf6 5. Re1 a6 6. Bxc6 dxc6 7. d3 e5 8. h3
Bd6 9. Bg5 h6 10. Be3 O-O 11. Nbd2 b6 12. a4 Rd8 13. Nc4 Be6 14. Nxd6 Qxd6 15.
Qd2 a5 16. Rad1 Bd7 17. Nh4 Be6 18. f4 exf4 19. Bxf4 Qd4+ 20. Be3 Qxa4 21. Bxh6
gxh6 22. Qxh6 Nh7 23. Ng6 Qd4+ 24. Kh1 Qf6 25. Rf1 Qxg6 26. Qxg6+ fxg6 0-1
Here's the position after you (White) sacked the Bishop on move 21:

r2r2k1/5pp1/1pp1bn1B/p1p5/q3P2N/3P3P/1PPQ2P1/3RR1K1 b - - 0 21

Stockfish-1.7.1 (8 threads) evaluates this position as +0.77 for Black---at least at depth 30. But further investigation might prove interesting, as the evaluations are becoming less favorable to Black as the depth increases.

Code: Select all

Searching: r2r2k1/5pp1/1pp1bn1B/p1p5/q3P2N/3P3P/1PPQ2P1/3RR1K1 b - -
infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     +3.68   00:01     1556 gxh6 Qxh6 Qd4+ Kh1 Qxb2 
 3     +3.68   00:01     2383 gxh6 Qxh6 Qd4+ Kh1 Qxb2 
 4     +3.68   00:01     3794 gxh6 Qxh6 Qd4+ Kh1 Qxb2 
 5     +2.75   00:01     5361 gxh6 Qxh6 Qd4+ Re3 Nxe4 Rf1 
 6     +2.67   00:01     7278 gxh6 Qxh6 Qd4+ Re3 Nxe4 Rf1 Nd2 
 7  <  +2.10   00:01    13812 gxh6 Qxh6 Qd4+ Re3 Nxe4 Rf1 Nd2 Rf2 
 7     +2.02   00:01    29843 gxh6 Qxh6 Qd4+ Re3 Ne8 Rf1 Qg7 Qf4 Qxb2 Rg3+ Ng7 
 8     +2.10   00:01    75983 gxh6 Qxh6 Qd4+ Re3 Nh7 e5 c4 Kf1 Kh8 c3 Qc5 
 9     +1.90   00:01   122562 gxh6 Qxh6 Nh7 Re3 Kh8 b3 Qd4 Rf1 Qg7 Qh5 
10  >  +2.14   00:01   176073 gxh6 Qxh6 Nh7 Re3 Kh8 b3 Qd4 Rf1 Qg7 Qh5 Rg8 
10     +2.22   00:01   182910 gxh6 Qxh6 Nh7 Re3 Kh8 b3 Qd4 Rf1 Qg7 Qh5 Qg5 Qxg5 
                              Nxg5 Nf5 Bxf5 Rxf5 
11     +2.34   00:01   430007 gxh6 Qxh6 Nh7 Re3 Kh8 b3 Qd4 Rf1 Rg8 g4 Qg7 Qxg7+ 
                              Kxg7 Nf5+ Bxf5 Rxf5 a4 bxa4 Rxa4 Ref3 
12     +2.46   00:01   576071 gxh6 Qxh6 Nh7 Re3 Kh8 b3 Qd4 Rf1 Rg8 g4 Qg7 Qxg7+ 
                              Kxg7 e5 a4 bxa4 Rxa4 Nf5+ Bxf5 Rxf5 
13  <  +2.26   00:01   816323 gxh6 Qxh6 Qd4+ Re3 Nxe4 Rf1 Nd2 Rf2 
13  <  +2.06   00:01   996188 gxh6 Qxh6 Nh7 c3 c4 d4 Qb5 Ng6 Re8 Ne5 Qxb2 Re3 
13     +2.02   00:01    1444k gxh6 Qxh6 Nh7 c3 c4 d4 Qb5 Re3 Qg5 Qxg5+ Nxg5 Rg3 
                              f6 Nf3 Kf7 Nxg5+ fxg5 Rxg5 Kf6 h4 Ke7 
14     +2.02   00:01    1963k gxh6 Qxh6 Nh7 c3 c4 d4 Qb5 Re3 Kh8 Nf3 Rg8 Re2 
                              Rg6 Qh4 f6 g4 Kg8 Rf1 Rg7 
15     +2.10   00:01    2617k gxh6 Qxh6 Nh7 c3 c4 d4 Qb5 Re3 Kh8 Nf3 Rg8 Re2 
                              Rg6 Qh4 f6 g4 Kg8 Rf1 a4 e5 a3 bxa3 Rxa3 
16  <  +2.02   00:02    2961k gxh6 Qxh6 Qd4+ Re3 Nh7 e5 c4 c3 Qc5 d4 
16     +2.10   00:02    3346k gxh6 Qxh6 Nh7 c3 c4 d4 Qb5 Re3 Kh8 Nf3 Rg8 Re2 
                              Rg6 Qh4 f6 g4 Kg8 Rf1 a4 e5 a3 bxa3 Rxa3 exf6 
                              Rxf6 Qe1 
17  <  +2.02   00:02    3944k gxh6 Qxh6 Qd4+ Re3 Nh7 e5 c4 c3 Qc5 d4 
17     +2.10   00:02    4412k gxh6 Qxh6 Nh7 c3 c4 d4 Qb5 Re3 Kh8 Nf3 Rg8 Re2 
                              Rg6 Qh4 f6 g4 Kg8 Rf1 a4 e5 a3 bxa3 Rxa3 Qe1 
18  <  +2.02   00:02    5355k gxh6 Qxh6 Qd4+ Re3 Qe5 Rf1 Nh7 Nf5 Qxb2 c3 Bxf5 
                              Rxf5 
18  <  +1.94   00:02    7743k gxh6 Qxh6 Qd4+ Re3 Qe5 Rf1 Nh7 Nf5 Qxb2 c3 Bxf5 
                              Rxf5 
18  >  +2.18   00:03   10386k gxh6 Qxh6 Nh7 c3 Qb3 Rd2 a4 Nf5 Bxf5 exf5 Qd5 Re4 
                              Kh8 Rh4 Qxf5 Rg4 Rg8 Qxc6 Qe6 Rxg8+ Rxg8 Qxa4 
                              Qe1+ 
18  <  +1.78   00:03   11373k gxh6 Qxh6 Nh7 c3 Qb3 Rd2 a4 Nf5 Bxf5 exf5 Qd5 Re4 
                              Kh8 Rh4 Qxf5 Rf2 Qg6 Qxg6 fxg6 Rf7 
18  >  +2.26   00:04   17394k gxh6 Qxh6 Nh7 c3 Qb5 Nf5 Bxf5 exf5 Rxd3 Rxd3 Qxd3 
                              Qxc6 Qd8 Qf3 Rc8 Qg3+ Kh8 Qf4 Kg7 Qg3+ Qg5 Qxg5+ 
                              Nxg5 h4 Nh7 
18     +2.26   00:04   17830k gxh6 Qxh6 Nh7 c3 Qb5 Nf5 Bxf5 exf5 Rxd3 Rxd3 Qxd3 
                              Qxc6 Qd8 Qf3 Rc8 Qg3+ Kh8 Qf4 Kg7 Qg3+ Qg5 Qf2 
                              Kh8 g3 Nf6 h4 Qg7 Re7 Kh7 
19  <  +2.10   00:05   24716k gxh6 Qxh6 Nh7 c3 Qb5 Rf1 Rxd3 Rxd3 Qxd3 Rxf7 Bxf7 
                              Nf5 Qd1+ Kh2 
19  <  +1.94   00:05   26687k gxh6 Qxh6 Qd4+ Re3 Nh7 e5 c4 c3 Qc5 d4 Qf8 Rg3+ 
                              Kh8 Qe3 
19     +1.90   00:07   33228k gxh6 Qxh6 Nh7 c3 Qb5 Rf1 Kh8 Qh5 Rg8 Qe5+ Rg7 c4 
                              Qa6 Ng6+ fxg6 Qxe6 Qb7 e5 Rd8 Qg4 Re7 d4 cxd4 
                              Rxd4 
20     +2.10   00:11   65955k gxh6 Qxh6 Nh7 c3 Qb3 Rd2 Kh8 Nf3 Rg8 Ne5 a4 c4 a3 
                              bxa3 Qc3 Nxc6 Rxa3 Ne7 Rg3 Nf5 Bxf5 exf5 Qd4+ Kh1 
                              Raxd3 Rxd3 Qxd3 Qxb6 Qxc4 Qc7 Rg8 
21     +2.18   00:13   79542k gxh6 Qxh6 Nh7 c3 Qb3 Rd2 Kh8 Nf3 Rg8 Ne5 Rg5 Nf3 
                              Rg6 Qe3 Rg3 Qf4 Rag8 Ne5 Rxh3 Nxc6 f6 Ne7 Rg5 
                              Qb8+ Kg7 Rf1 
22  <  +1.98   00:15   93402k gxh6 Qxh6 Nh7 c3 Qb3 Rd2 Kh8 Rf1 a4 Nf3 Rg8 c4 
                              Rg6 Qf4 Bxh3 Ne5 
22     +1.98   00:16   99577k gxh6 Qxh6 Nh7 c3 Qb3 Rd2 Kh8 Rf1 a4 Nf3 Rg8 c4 
                              Rg6 Qf4 Rag8 Qe5+ R6g7 g4 Qb4 Re2 Bd7 Kh2 f6 Qd6 
                              Qb3 Kg2 
23  >  +2.22   00:25  161307k gxh6 Qxh6 Nh7 c3 Qb3 Rd2 Kh8 Rf1 a4 Nf3 Rg8 c4 a3 
                              Ne5 Rg7 bxa3 Qc3 Nxc6 Bxh3 Kh1 Bg4 a4 Rg5 
23     +2.14   00:25  163304k gxh6 Qxh6 Nh7 c3 Qb3 Rd2 Kh8 Rf1 a4 Nf3 Rg8 c4 a3 
                              Ne5 Rg7 bxa3 Qc3 Nxc6 Bxh3 Ne7 Qd4+ Kh1 Be6 a4 
                              Qe5 Nd5 Rxa4 Qh2 Qg5 Rdf2 
24     +2.10   00:49  336336k gxh6 Qxh6 Nh7 c3 Qb3 Qf4 Kh8 Qe5+ f6 Ng6+ Kg7 Qg3 
                              Rg8 Nf4+ Kh8 Qf2 Ra7 Ra1 Rag7 Ra3 Qb5 c4 Qb4 Rea1 
                              Ng5 Ra4 Nxh3+ Nxh3 Rxg2+ Qxg2 Rxg2+ Kxg2 Qxb2+ 
                              Nf2 Kg7 Kf3 Qe5 Rg1+ Kf7 
25  <  +1.98   00:54  371423k gxh6 Qxh6 Nh7 c3 Qb3 Qf4 Kh8 Qe5+ f6 Ng6+ Kg7 Qg3 
                              Qxb2 Nf4+ Kf7 Qg6+ 
25     +2.10   01:01  418027k gxh6 Qxh6 Nh7 c3 Qb3 Qf4 Kh8 Qe5+ f6 Ng6+ Kg7 Qg3 
                              Rg8 Nf4+ Kh8 Qf2 Ra7 Rd2 a4 Ra1 Bf7 Ra3 Qb5 Ra1 
                              c4 d4 Re7 Qe1 Kg7 
26  <  +2.02   01:07  461804k gxh6 Qxh6 Nh7 c3 Qb3 Qf4 Kh8 Qe5+ f6 Ng6+ Kg7 Qg3 
                              Qxb2 Nf4+ Kf7 Qg6+ 
26     +2.14   01:12  496104k gxh6 Qxh6 Nh7 c3 Qb3 Qf4 Kh8 Qe5+ f6 Ng6+ Kg7 Qg3 
                              Rg8 Nf4+ Kh8 Qf2 Ra7 Rd2 a4 Ra1 Bf7 Ra3 Qb5 Re2 
                              Re7 h4 Qa6 h5 Nf8 Re1 
27  <  +2.06   01:20  550240k gxh6 Qxh6 Nh7 c3 Qb3 Qf4 Kh8 Qe5+ f6 Ng6+ Kg8 Qc7 
                              Qxb2 Ne7+ Kf7 Qb7 Bd7 Nxc6 
27     +2.06   01:26  590629k gxh6 Qxh6 Nh7 c3 Qb3 Qf4 Kh8 Qe5+ f6 Ng6+ Kg7 Qg3 
                              Rg8 Nf4+ Kh8 Qf2 Ra7 Rd2 a4 Ra1 Bf7 Ra3 Qb5 Re2 
                              Re7 c4 Qb4 Ra1 Kg7 Qh4 Ng5 
28  >  +2.18   02:29    1062M gxh6 Qxh6 Nh7 c3 Qb3 Qf4 Kh8 Qe5+ f6 Ng6+ Kg7 Qg3 
                              Rg8 Nf4+ Kh8 Qf2 Rae8 Ra1 Bf7 Ra3 Qb5 c4 Qa6 Rea1 
                              Qa7 Rb3 Ng5 Qh4+ Kg7 Rf1 Rh8 
28     +2.18   02:36    1112M gxh6 Qxh6 Nh7 c3 Qb3 Qf4 Kh8 Qe5+ f6 Ng6+ Kg7 Qg3 
                              Rg8 Nf4+ Kh8 Qf2 Rae8 Ra1 Bf7 Ra3 Qb5 c4 Qa6 Rf1 
                              Qa7 Kh1 Qc7 g4 Qd6 Rb3 b5 Qh4 a4 Ra3 
29  <  +2.02   09:33    4238M gxh6 Qxh6 Nh7 Nf3 Qb4 Re3 Qxb2 e5 c4 Rf1 Qa3 Ng5 
                              Nxg5 Rg3 Qc5+ Kh1 Bf5 Rxg5+ 
29  <  +1.86   10:20    4580M gxh6 Qxh6 Qd4+ Re3 Qe5 Rf1 Nh7 Nf3 Qg3 h4 Kh8 Nd4 
29  <  +1.54   11:31    5112M gxh6 Qxh6 Nh7 Nf3 Qxc2 Rd2 Qa4 Re3 Rf8 Ng5 Nxg5 
                              Qxg5+ Kh8 
29  <  +0.89   15:08    6757M gxh6 Qxh6 Qd4+ Re3 Ne8 Kh2 Qh8 Rg3+ Ng7 Qg5 Qh7 
                              Rf1 
29     +0.89   27:00   12165M gxh6 Qxh6 Nh7 Nf3 Re8 Rd2 Bd7 Rf2 Re6 Qh4 Be8 
                              Ref1 Qb5 b3 a4 Qf4 Rf6 Qh4 c4 bxa4 Rxa4 Ng5 Qxg5 
                              Qxg5+ Nxg5 Rxf6 cxd3 cxd3 Ne6 Kh2 Ra3 R6f3 b5 h4 
                              Nd4 Rg3+ Kf8 
30     +0.77   40:36   18487M gxh6 Qxh6 Nh7 Nf3 Re8 Rd2 Bd7 Rf2 Re6 Qh4 Be8 c3 
                              Qb5 d4 cxd4 Nxd4 Qg5 Qxg5+ Nxg5 Nxe6 Nxe6 Rd2 a4 
                              Kf2 Nc5 Kf3 a3 bxa3 Rxa3 Re3 Kg7 Rd6 Kf8 h4 Bd7 
                              e5 Ra4 Rd4 Ra1 c4 Kg7 Rd6 

Nodes: 18901341459
Nodes/second: 7577306
Best move: gxh6
Ponder move: Qxh6
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Robert Flesher
Posts: 53
Joined: Thu Jun 10, 2010 3:16 pm
Real Name: Robert Flesher

Re: Where did I go wrong here?

Post by Robert Flesher » Tue Jun 22, 2010 6:14 pm

Hagen wrote:[Event "?"]
[Site "?"]
[Date "2010.06.22"]
[Round "?"]
[White "Hagen"]
[Black "Rybka 3.Dynamic 1-cpu w32"]
[Result "0-1"]
[PlyCount "52"]
[EventDate "2010.??.??"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qc7 4. O-O Nf6 5. Re1 a6 6. Bxc6 dxc6 7. d3 e5 8. h3
Bd6 9. Bg5 h6 10. Be3 O-O 11. Nbd2 b6 12. a4 Rd8 13. Nc4 Be6 14. Nxd6 Qxd6 15.
Qd2 a5 16. Rad1 Bd7 17. Nh4 Be6 18. f4 exf4 19. Bxf4 Qd4+ 20. Be3 Qxa4 21. Bxh6
gxh6 22. Qxh6 Nh7 23. Ng6 Qd4+ 24. Kh1 Qf6 25. Rf1 Qxg6 26. Qxg6+ fxg6 0-1

r2r2k1/5p1n/1pp1b2Q/p1p5/q3P2N/3P3P/1PP3P1/3RR1K1 w - - 0 23


Looks like Ng6 was poor, Nf3 and you still have an attack! Maybe not winning but still attacking!


However, my Zappa Mexico, Dissident Aggressor settings say that white may be winning!! after Nf3!!
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Robert Flesher
Posts: 53
Joined: Thu Jun 10, 2010 3:16 pm
Real Name: Robert Flesher

Re: Where did I go wrong here?

Post by Robert Flesher » Tue Jun 22, 2010 6:53 pm

Robert Flesher wrote:
Hagen wrote:[Event "?"]
[Site "?"]
[Date "2010.06.22"]
[Round "?"]
[White "Hagen"]
[Black "Rybka 3.Dynamic 1-cpu w32"]
[Result "0-1"]
[PlyCount "52"]
[EventDate "2010.??.??"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qc7 4. O-O Nf6 5. Re1 a6 6. Bxc6 dxc6 7. d3 e5 8. h3
Bd6 9. Bg5 h6 10. Be3 O-O 11. Nbd2 b6 12. a4 Rd8 13. Nc4 Be6 14. Nxd6 Qxd6 15.
Qd2 a5 16. Rad1 Bd7 17. Nh4 Be6 18. f4 exf4 19. Bxf4 Qd4+ 20. Be3 Qxa4 21. Bxh6
gxh6 22. Qxh6 Nh7 23. Ng6 Qd4+ 24. Kh1 Qf6 25. Rf1 Qxg6 26. Qxg6+ fxg6 0-1

r2r2k1/5p1n/1pp1b2Q/p1p5/q3P2N/3P3P/1PP3P1/3RR1K1 w - - 0 23


Looks like Ng6 was poor, Nf3 and you still have an attack! Maybe not winning but still attacking!


However, my Zappa Mexico, Dissident Aggressor settings say that white may be winning!! after Nf3!!
[FEN "r2r2k1/5p1n/1pp1b2Q/p1p5/q3P2N/3P3P/1PP3P1/3RR1K1 w - - 0 23"]
[SetUp "1"]
23. Nf3! Qb4 24. Re3 Qxb2
25. e5 Qxc2 26. Rf1 Rxd3 27. Ne1 Rxe3 28. Nxc2 Rxe5 29. Qf4 f6 30. Qg3+ Rg5 31.
Qc7 Bxh3 32. Rf2 Rc8 33. Qxb6 Be6 34. Re2

Leaving this position, where white may be able to win


2r3k1/7n/1Qp1bp2/p1p3r1/8/8/2N1R1P1/6K1 b - - 0 34
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