A40 Englund Gambit, Stockholm Variation
1.d4 e5 2.dxe5 Nc6 3.Nf3 Qe7 4.Qd5 f6 5.exf6 Nxf6
Black plays the gambit
The Englund Gambit is a rarely played chess opening that starts with the moves 1. d4 e5?! Black's idea is to avoid the traditional closed queen's pawn games and create an open game with tactical chances, but at the cost of a pawn. (Wikipedia).
Fritz Carl Anton Englund ( * 1871; † 1933) was one of the most important Scandinavian chess players at the beginning of the 20th century. In 1932 he organized at Stockholm a thematic tournament which started with the moves: 1.d2-d4 e7-e5 2.d4xe5 Sb8-c6 3.Sg1-f3 Dd8-e7 4.Dd1-d5. Based on this tournament the opening 1.d4 e5 was titled Englund Gambit and the played variation was called Stockholm variation (translation from German Wikipedia).
For a detailed report read Stefan Bücker in ChessCafe:
http://www.chesscafe.com/text/kaiss07.pdf
Wins, losses, draws
Code: Select all
White Wins : 21 (50.0 %)
Black Wins : 5 (11.9 %)
Draws : 16 (38.1 %)
Games : 42 (finished)
Unfinished : 0
White Perf. : 69.0 %
Black Perf. : 31.0 %The average starting evaluation after 5. -- Nxf6 = -0,72 A bad evaluation, but a good indication for Black's performance.
Crosstable Englund, Points and Pairwise Scoring
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1 2 3 4 5 6 7
1 FireBird 1.0B x64 ** ½1 1½ 11 11 01 1½ 9.5/12
2 Rybka 3 x64 ½0 ** 01 1½ 11 1½ 1½ 8.0/12
3 Stockfish 1.6 x64 0½ 10 ** 1½ ½½ ½1 10 6.5/12
4 Zappa Mexico II x64 00 0½ 0½ ** ½0 11 ½1 5.0/12 24.00
5 Naum 4 x64 00 00 ½½ ½1 ** ½½ ½1 5.0/12 23.75
6 Deep Shredder 12 x64 10 0½ ½0 00 ½½ ** ½1 4.5/12
7 Deep Fritz 11 0½ 0½ 01 ½0 ½0 ½0 ** 3.5/12
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42 gamesCode: Select all
games +/=/- points perf
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FireBird 1B 12 +8=3-1, 9.5/12 79%
Deep Rybka 3 12 +6=4-2, 8.0/12 66%
Stockfish 1.6 12 +4=5-3, 6.5/12 54%
Zappa Mexico II 12 +3=4-5, 5.0/12 41%
Naum 4 12 +2=6-4, 5.0/12 41%
Deep Shredder 12 12 +2=5-5, 4.5/12 37%
Deep Fritz 11 12 +1=5-6, 3.5/12 29%
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42 games A 43 Zilbermints Gambit
1. d4 c5 2.b4
White plays the gambit.
In principle 1.-- c5 would be a gambit too, but this opening is called Old Benoni Defense!? Most of the engines would prefer the 2. d5-mainline instead of 2. d x c5 or 2. b4.
Lev D. Zilbermints (*1967, Newark, New Jersey) is an active American chessplayer (Chess Champion of Essex County, N.J., since 1995), who is well represented in the internet in discussing chess openings. A variation of the Blackmar-Diemer Gambit, is also named after him.
The birth of the A43 Benoni Zilbermints Gambit describes Lev Zilbermints as follows:
On 19 February 1995, while having a break between rounds at the United States Amateur Team East, I invented the Zilbermints Benoni. The very next day, I beat an old antagonist with it in a blitz match. Here is that historic first game:
Zilbermints-RalphNeplokh (1820)
1 d4 c5 2 b4! cb4 3 a3 Qa5 4 Qd2 Nc6 5 Bb2 e6 6 ab Bxb4+7 c3! and White won a piece and game.
For detailed report read on http://www.gambitchess.com/gambitchess/lzd1.htm
And the meaning of that gambit's history? You don't need to be a Grandmaster or an Elo giant eternalizing yourself with a chess opening name!
Wins, losses, draws
Games : 42 (finished)
White Wins : 7 (16.7 %)
Black Wins : 14 (33.3 %)
Draws : 21 (50.0 %)
Unfinished : 0
White Perf. : 41.7 %
Black Perf. : 58.3 %
So far Zilbermints Benoni belongs comparatively to the more successful gambits, played by chess programs without an opening book.
The gambit was accepted by all engines.
Crosstable Zilbermints, Points and Pairwise Scoring
GGTJan10_4221_10+12_A43_Zilbermints
Code: Select all
1 2 3 4 5 6 7
1 Rybka 3 ** ½½ ½1 1½ ½1 ½½ 11 8.5/12
2 FireBird 1.0 beta x64 mp ½½ ** ½1 ½0 1½ 11 ½½ 7.5/12
3 Deep Shredder 12 x64 FrGui ½0 ½0 ** ½0 ½½ 11 11 6.5/12
4 Naum 4 MPx64 0½ ½1 ½1 ** ½½ ½0 10 6.0/12
5 Zappa Mexico II ½0 0½ ½½ ½½ ** ½½ 10 5.0/12 29.00
6 Stockfish 1.6 JA 64bit_dec09 ½½ 00 00 ½1 ½½ ** ½1 5.0/12 27.75
7 Deep Fritz 11 00 ½½ 00 01 01 ½0 ** 3.5/12
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42 gamesCode: Select all
games +/ = /- points %
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Deep Rybka 3 12 +5 =7 -0 8.5/12 70%
FireBird 1B 12 +4 =7 -1 7.5/12 62%
Deep Shredder 12 +4 =5 -3 6.5/12 54%
Naum 4 12 +3 =6 -3 6.0/12 50%
Stockfish 1.6 12 +2 =6 -4 5.0/12 41%
Zappa Mexico II 12 +1 =8 -3 5.0/12 41%
Deep Fritz 11 12 +2 =3 -7 3.5/12 29%
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42 gamesTorre Attack, A 46 Wagner Gambit
1.d4 Nf6 2.Nf3 e6 3.Bg5 c5 4.e4
Heinrich Wagner(August 1888, Hamburg – June 1959, Hamburg) was a German chess master. Wagner played for Germany in 4 Chess Olympiads from 1927 to 1931 and won team bronze medal at Hamburg 1930. Wagner was awarded the International Master title in 1953.
Wins and Draws
Games : 42 (finished)
White Wins : 10 (23.8 %)
Black Wins : 12 (28.6 %)
Draws : 20 (47.6 %)
Unfinished : 0
White Perf. : 47.6 %
Black Perf. : 52.4 %
Not an overmuch risky gambit, or to be more precise, I see no gambit how it's normally defined! But I'll let it in the suite, as a curiosity
Crosstable Wagner, Points and Pairwise Scoring
GGTJan10_4221_10+12_A47Wagner 2010
Code: Select all
1 2 3 4 5 6 7
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1 Rybka 3 ** ½½ ½1 ½½ 11 11 11 9.5/12
2 Deep Shredder 12 x64 FrGui ½½ ** ½½ 10 1½ ½½ 11 7.5/12
3 FireBird 1.0 beta x64 mp ½0 ½½ ** ½1 ½½ ½½ 11 7.0/12
4 Stockfish 1.6 JA 64bit_dec09 ½½ 01 ½0 ** 00 11 ½½ 5.5/12
5 Zappa Mexico II 00 0½ ½½ 11 ** ½0 0½ 4.5/12
6 Deep Fritz 11 00 ½½ ½½ 00 ½1 ** 0½ 4.0/12 23.25
7 Naum 4 00 00 00 ½½ 1½ 1½ ** 4.0/12 18.25
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42 gamesCrosstable Wagner, Performance
Code: Select all
N +/ =/ - points perf
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Deep Rybka 3 12 +7 =5 -0 9.5 79%
Deep Shredder 12 +4 =7 -1 7.5 62%
FireBird 1B 12 +3 =8 -1 7.0 58%
Stockfish 1.6 12 +3 =5 -4 5.5 45%
Zappa Mexico II 12 +2 =5 -5 4.5 37%
Deep Fritz 11 12 +1 =6 -5 4.0 33%
Naum 4 12 +2 =4 -6 4.0 33%
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42 games4) Total Scores, 12 gambits
Amar,Ware,Sokolsky,Swiss,From,Sturm,Lisitsin,Jaenisch,Bellon,Englund,Zilbermint,Wagner
There are played till now:
Code: Select all
total 504 games (12x42)
by each engine 144 games (12x12)
by each engine-pair 24 games (12x2)Code: Select all
games +/ =/ -/ Points Perf
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Deep Rybka 3 144 +68 =61 -15, 98.5/144, 68%
Firebird 1B 144 +68 =60 -16, 98.0/144, 68%
Stockfish 1.6 144 +32 =70 -42, 67.0/144, 46%
Deep Shredder12 144 +43 =47 -54, 66.5/144, 46%
Naum 4 144 +31 =68 -45, 65.0/144, 45%
Zappa Mexico II 144 +27 =66 -51, 60.0/144, 41%
Deep Fritz 11 144 +20 =58- 66, 49.0/144, 34%
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504 gamesCode: Select all
Elo + - Games Score Av.Op. Draws
1 Deep Rybka 3 x64 3189 44 43 144 68.4 % 3055 42.4 %
2 FireBird 1B x64 3187 45 44 144 68.1 % 3055 41.7 %
3 Stockfish 1.6 x64 3053 41 41 144 46.5 % 3078 48.6 %
4 Deep Shredder 12 x64 3051 47 47 144 46.2 % 3078 32.6 %
5 Naum 4 x64 3045 41 42 144 45.1 % 3079 47.2 %
6 Zappa Mexico II x64 3024 42 42 144 41.7 % 3082 45.8 %
7 Deep Fritz 11 x32 2976 44 45 144 34.0 % 3091 40.3 %
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504 gamesPGN-link:
http://www.file-upload.net/download-231 ... d.pgn.html
http://www.file-upload.net/download-231 ... s.pgn.html
http://www.file-upload.net/download-231 ... r.pgn.html
Next gambits: A51 Budapest, A 57 Wolga-Benkö, A 80 Krejik
CU next round
Rainer Neuhäusler
System: Intel Core i7 920, oc 3700 MHz, 6 GB RAM. Hyperthreading off, Turbo Mode off. Vista 64Bit
Parameter: 3 Threads, ponder off, 1,2 GB Hash, EGTB 3-4-5 (not used by Firebird and Stockfish, but sometimes used by the GUI, even for both engines)
Fritz11-GUI: remis never, resign late.[/u]
Fritz 11 Mark 4 CPU: 22.61/ 10.800.000 n/sec; Arena Mark: 33.73