Opening Report

Database: IB109 (4,260,261 games)
Report: 1.d4 a6 2.c4 b5 3.e4 e6 4.cxb5 axb5 (70 games)
ECO: A40a [Queen's Pawn Game]
Generated by Scid 3.7, 2009.08.10

BR BN BB BQ BK BB BN BR
:: BP BP :: BP BP BP
:: :: BP :: ::
:: BP :: :: ::
:: WP WP :: ::
:: :: :: ::
WP WP :: WP WP WP
WR WN WB WQ WK WB WN WR

1. Statistics and History

1.1 Statistics

                   Games     1-0     =-=     0-1    Score
-----------------------------------------------------------
 All report games     70      29      10      31    48.5%
-----------------------------------------------------------

1.2 Oldest games

1: 0-1(59) Pritchett Craig William -- Basman Michael, 1980 [29]
2: 0-1(20) Granat Russell -- Basman Michael, 1981 [33]
3: 1-0(42) Formanek Edward W -- Basman Michael, 1982 [9]
4: 1-0(32) Rudenskij Nikolai -- Benson Paul J, 1982 [6]
5: 0-1(39) Morneau F -- Meleg Mike, 1984 [40]

1.3 Newest games

1: 1-0(38) Sorsa Nuutti 2226 -- Linnanen Lassi 2190, 2007 [36]
2: 1-0(43) Frontini F 1965 -- Fraser Mitchell J 2084, 2007 [16]
3: 0-1(24) Oliver Serrano A 2094 -- Campos Calvo Sotelo Ju 1971, 2007 [14]
4: 0-1(35) Kirby P 2045 -- Roberts P 2201, 2005 [21]
5: 1-0(41) Howell D 2334 -- Dossett Christopher, 2004 [40]

1.4 Current popularity

Year               1800-99 1900-49 1950-69 1970-79 1980-89 1990-99 2000-09

Once every X games   ---     ---     ---     ---    17473   65122   78536
Frequency in all years: once every 60860 games
In the 10 years to today: once every 78536 games (down 22% from all years)
In the 5 years to today: once every 191044 games (down 67% from all years)
In the 1 year to today: once every 0 games (no change from all years)

1.5 Most frequent players (White)

1: 1 2003100% 2411 Gongora Maikel [26]
2: 1 2004100% 2334 Howell D [40]
3: 1 2001 0% 2288 Piay Augusto Diego [32]
4: 1 2007100% 2226 Sorsa Nuutti [36]
5: 1 1999100% 2183 Bodicker R [15]
6: 1 1999100% 2140 Croonenborghs Tom [37]

1.6 Most frequent players (Black)

1: 7 1980-1986 71% Basman Michael [9,20,25,27,29,33,34]
2: 5 2000-2001 70% Carstensen Jan Christian [5,17,20,24]
3: 3 2000-2003 50% 2006 Campos Calvo Sotelo Juan [19,26,32]
4: 2 1995-1999 25% 2145 Halfon Enrique [19,28]
5: 2 1988-1993 75% Welling Gerard [8,36]
6: 2 1989-1992 25% Beck Gerald [11,41]

2. Ratings and Performance

2.1 Average ratings and performance

White rating: 2148 (15 games); White performance: 2031 (44% vs 2074)
Black rating: 2074 (9 games); Black performance: 2098 (43% vs 2148)

2.2 Games with highest average rating

1: 1-0(41) Chandler Murray G -- Basman Michael, 1985 [27]
2: 0-1(53) Prasad Devaki V -- Basman Michael, 1985 [34]
3: 1-0(42) Formanek Edward W -- Basman Michael, 1982 [9]
4: 0-1(21) Holmes Donald A -- Basman Michael, 1986 [25]
5: 0-1(20) Granat Russell -- Basman Michael, 1981 [33]
6: 0-1(29) Clarke Thomas -- Basman Michael, 1984 [20]
7: =-=(28) Rolletschek Heinrich -- Beck Gerald, 1992 [11]
8: 0-1(62) Zarges Stephan -- Schulenburg Peter, 2000 [35]

3. Result Trends

3.1 Result lengths and frequencies

                 Score      Game length             Frequency       
                          1-0    =-=    0-1    1-0     =-=     0-1  
 Report games    48.5%     34     30     31   41.4%   14.2%   44.2% 
 All games       53.9%     39     35     40   38.7%   30.3%   30.8%

3.2 Shortest wins (White)

1: 1-0(9) Rubin Peter -- Ramus Norbert, 2004 [10]
2: 1-0(17) Zimmat Thorben -- Carstensen Jan Christian, 2001 [5]
3: 1-0(21) Stacey Jack -- Iglesias Pablo, 1999 [23]
4: 1-0(22) Seidel Michael -- Gnuechtel Andreas, 2001 [19]
5: 1-0(22) Fillion Nicolas -- Godbout Mathieu, 2003 [2]

3.3 Shortest wins (Black)

1: 0-1(16) Izuel Samitier Francesc 2077 -- Domingo Jordi, 2002 [22]
2: 0-1(16) Salo -- Parkano, 1984 [9]
3: 0-1(18) Storm Mikael -- Billquist Ulf, 1992 [4]
4: 0-1(19) Schmidtgall Boris -- Carstensen Jan Christian, 2001 [24]
5: 0-1(20) Granat Russell -- Basman Michael, 1981 [33]

4. Moves and Themes

4.1 Move orders reaching the report position

There were 10 move orders reaching this position:
1: 1.e4 e6 2.d4 a6 3.c4 b5 4.cxb5 axb5 (48)
2: 1.d4 b5 2.e4 a6 3.c4 e6 4.cxb5 axb5 (9)
3: 1.e4 a6 2.d4 b5 3.c4 e6 4.cxb5 axb5 (4)
4: 1.e4 a6 2.d4 e6 3.c4 b5 4.cxb5 axb5 (3)
5: 1.d4 a6 2.c4 b5 3.e4 e6 4.cxb5 axb5 (1)
6: 1.d4 a6 2.e4 e6 3.c4 b5 4.cxb5 axb5 (1)
7: 1.d4 e6 2.c4 a6 3.e4 b5 4.cxb5 axb5 (1)
8: 1.d4 e6 2.e4 a6 3.c4 b5 4.cxb5 axb5 (1)
9: 1.e4 a6 2.c4 e6 3.d4 b5 4.cxb5 axb5 (1)
10: 1.e4 e6 2.c4 a6 3.d4 b5 4.cxb5 axb5 (1)

4.2 Moves from the report position

    Move   ECO       Frequency    Score  AvElo Perf AvYear %Draws
 1: Bxb5              70:100.0%   48.5%  2147        1995   14%
_______________________________________________________________
TOTAL:                70:100.0%   48.5%  2147        1995   14%

4.3 Positional Themes

Frequency of themes in the first 20 moves of each game:
Same-side castling: 30% White Isolated Queen Pawn: 47%
Opposite castling: 6% Black Isolated Queen Pawn: 4%
Kingside pawn storm: 19% White Pawn on 5/6/7th rank: 51%
Queens exchanged: 61% Black Pawn on 2/3/4th rank: 31%
Only one side has Bishop pair: 4% Open c/d/e file: 34%

4.4 Endgames

Material at the end of each game:
P BN R R,BN Q Q,BN Q,RQ,R,BN
Report games 0% 6% 7% 33% 1% 1% 1% 50%
All games 3% 10% 9% 25% 2% 4% 4% 43%

5. Theory Table

1.d4 a6 2.c4 b5 3.e4 e6 4.cxb5 axb5: +29 =10 -31 (34/70: 49%)
56789101112
1 Bxb5
Bb71 		Qe22
f53 		d54
Bb4+5 		Bd2
Bxd2+ 		Nxd2
exd5 		exd5+
Qe7 		d6
cxd6 		Ngf3
Ba66 		7: 50%
2 ...
... 		f3
Qh4+7 		g38
Qh5 		Nc39
Bb4 		Qd310
Ne7 		Ne2
f5 		OO
OO 		Be3
c611 		8: 63%
3 ...
... 		Bd3
f512 		exf513
Bxg2 		Qh5+
g6 		fxg6
Bg7 		gxh7+
Kf8 		Nf3
Nf6 		Qg6
Bxf314 		5: 10%
4 ...
... 		...
... 		Nc3
Bb415 		f316
Bxc3+17 		bxc3
fxe4 		fxe4
Bxe4 		Qh5+
g6 		Qe5
Bxd318 		6: 42%
5 ...
... 		Nc3
Bb419 		Qg420
Nf6 		Qxg7
Rg8 		Qh6
Nxe421 		Ne2
Rxg2 		Be3
Rg6 		Rg1
Rxh622 		9: 33%
6 ...
... 		...
... 		Qe2
f523 		Nh324
fxe425 		Qh5+26
Kf8 		Ng5
Nh6 		OO
Ra5 		Ngxe4
Nf527 		6: 67%
7 ...
... 		...
... 		Bd3
f528 		f329
Qh4+ 		g3
Qh5 		Qb3
Bxc3+ 		Qxc3
fxe4 		Bxe4
Bxe430 		6: 50%
8 ...
... 		...
... 		...
... 		Qe2
Nf6 		Bg5
fxe431 		Bxf632
exd3 		Qh5+
g6 		Qg533
Be734 		6: 17%
9 ...
... 		...
... 		f3
Qh4+ 		Kf1
Ne735 		Nge236
f5 		e5
OO37 		Be338
f4 		Bf2
Qh539 		8: 75%
10 ...
... 		...
... 		...
... 		g3
Qh5 		Qd340
Ra541 		Bc4
f5 		Ne2
Bxc3+42 		Nxc3
fxe443 		9: 61%
  1. 5...Bb4+ 6.Bd2 Bxd2+ 7.Qxd2 Nf6 8.Nc3 Bb7 9.Bd3 OO 10.Nh3 Nc6 11.Ng5 Nxd4 12.e5 h6 13.exf6 hxg5 0-1(21) Andra D -- Thunert M, 1989.

  2. 6.Qc2 f5 7.Bd3 Nf6 8.f3 fxe4 9.fxe4 Nxe4 10.Nf3 Nf6 11.Ne5 Bb4+ 12.Nc3 OO 13.Bg5 Qe8 1-0(22) Fillion Nicolas -- Godbout Mathieu, 2003.
    6.Nf3 Bxe4 7.Nc3 Bb7 8.OO Bd6 9.Re1 Nf6 10.Ne5 h6 11.Be2 Nc6 12.Bf3 Ra6 13.Nxc6 Bxc6 =-=(23) Lorenzen Reinhard -- Schuett Matthias, 1996.

  3. 6...Nf6 7.Bg5 Bb4+ 8.Nc3 c5 9.dxc5 Qa5 10.Bxf6 gxf6 11.Rc1 Bxc3+ 12.Rxc3 Qxa2 13.f3 Qa1+ 0-1(27) Nittschalk Karl -- Bonetti Shane, 2003.

  4. 7.exf5 Bxg2 8.Qh5+ g6 9.fxg6 Bg7 10.Nf3 Nf6 11.Qg5 Bxh1 12.gxh7 Kf8 13.Nbd2 Rxh7 0-1(18) Storm Mikael -- Billquist Ulf, 1992.

  5. 7...Nf6 8.Nc3 Bb4 9.Bd2 OO 10.Nf3 Bxc3 11.Bxc3 fxe4 12.Ng5 exd5 13.Qe3 Ng4 1-0(17) Zimmat Thorben -- Carstensen Jan Christian, 2001.

  6. 13.OO Qxe2 1-0(32) Rudenskij Nikolai -- Benson Paul J, 1982.

  7. 6...Nf6 7.Nc3 c5 8.Nge2 Nc6 9.Be3 cxd4 10.Nxd4 Qc7 11.OO Be7 12.a3 OO 13.Rc1 Rac8 1-0(30) Winslow D -- Vandenburg V, 1990.

  8. 7.Ke2 Bxe4 8.Nc3 Bb7 9.Nh3 Nc6 10.Ne4 Qh5 11.Bxc6 Bxc6 12.Nf4 Qb5+ 13.Kf2 Ne7 0-1(31) Haslinger Mandy -- Welling Gerard, 1993.

  9. 8.Bf1 Nc6 9.Nc3 Bb4 10.Bg2 f5 11.e5 Na5 12.Nh3 Ba6 13.Kf2 Ne7 1-0(42) Formanek Edward W -- Basman Michael, 1982; 8...Qa5+ 9.Bd2 Qb6 10.Bc3 d5 11.Bg2 Nd7 12.Ne2 dxe4 13.fxe4 f5 =-=(21) Dannis Nico -- Lagemann Tobias, 1999.
    8.Qb3 Nc6 9.Be3 Bb4+ 10.Nc3 Qxb5 11.d5 Ne5 12.Bd4 Bxc3+ 13.Qxc3 f6 0-1(16) Salo -- Parkano, 1984.

  10. 9.Bf1 Ne7 10.Bg2 f5 11.Ne2 c5 12.Be3 OO 13.OO cxd4 1-0(38) Gastmeyer Christof -- Schuett Matthias, 1997.
    9.Bd3 1-0 Rubin Peter -- Ramus Norbert, 2004.

  11. 13.Bc4 d5 =-=(28) Rolletschek Heinrich -- Beck Gerald, 1992.

  12. 6...Bb4+ 7.Bd2 Bxd2+ 8.Nxd2 f5 9.Ngf3 f4 10.OO Ne7 11.e5 Nd5 12.Ne4 OO 13.a3 Ba6 0-1(29) Ruiz Manchon Francesco Xavier -- Barquero Pinar Denis, 2004.
    6...Nc6 7.Nf3 Bb4+ 8.Bd2 Bxd2+ 9.Nbxd2 Nge7 10.OO OO 11.a3 f5 12.exf5 Nxf5 13.Bxf5 Rxf5 0-1(33) Van Splunter Niels -- Vahl Laurens, 1999.

  13. 7.Qe2 Nf6 8.Nc3 Bb4 9.Bg5 fxe4 10.Bxf6 exd3 11.Qh5+ g6 12.Qg5 Be7 13.Bxe7 Qxe7 0-1(49) Wolfradt Dirk -- Moerschbach Udo, 1988.
    =-= Hansen Carsten -- Jepsen Thomas, 1994.

  14. 13.Rg1 Qe7 0-1(24) Oliver Serrano A 2094 -- Campos Calvo Sotelo Ju 1971, 2007.

  15. 7...Nf6 8.Qe2 Bb4 9.Bg5 h6 10.Bxf6 Qxf6 11.Nf3 fxe4 12.Bxe4 Ba6 13.Bd3 Bxd3 1-0(24) Bodicker R 2183 -- Kers Bert, 1999.

  16. 8.Qe2 Nf6 9.f3 fxe4 10.fxe4 Bxc3+ 11.bxc3 Nxe4 12.Qh5+ g6 13.Qg4 Nf6 1-0(43) Frontini F 1965 -- Fraser Mitchell J 2084, 2007; 9.Bg5 fxe4 10.Bxe4 Nxe4 11.Bxd8 Nxc3 12.bxc3 Bxc3+ 13.Kd1 Bxa1 0-1(24) Lammers Torsten -- Malzahn Sven, 1996.

  17. 8...fxe4 9.fxe4 Bxe4 10.Qh5+ g6 11.Qe5 Bxg2 12.Qxh8 Qh4+ 13.Kd1 Kf8 =-=(36) Hintz Bastian 2051 -- Carstensen Jan Christian, 2000.
    8...Nf6 9.exf5 OO 10.Ne2 c5 11.Be3 Nd5 12.Bf2 cxd4 13.Bxd4 Nc6 0-1(30) Timmermann Felix Uwe -- Carstensen Jan Christian, 2001.

  18. 13.Bg5 d6 0-1(28) Jurlina Robert -- Schuettler Stefan, 1989.

  19. 6...f5 7.exf5 Bxg2 8.Qh5+ g6 9.fxg6 Bg7 10.gxh7+ Kf8 11.hxg8Q+ Kxg8 12.Qg4 Bxh1 13.Bg5 Qf8 =-=(70) Fabre Massana Miquel 2126 -- Campos Calvo Sotelo Juan 1949, 2000; =-=(42) Tey Carrera Joaquin 2094 -- Halfon Enrique 2145, 1999; 7.d5 exd5 8.exd5 Bb4 9.Ne2 Qh4 10.OO c6 11.dxc6 dxc6 12.Bd3 Ne7 13.Bf4 Bxc3 1-0(22) Seidel Michael -- Gnuechtel Andreas, 2001; 7.Bd3 Nf6 8.Bg5 Be7 9.Bxf6 Bxf6 10.Nf3 fxe4 11.Nxe4 Nc6 12.Nxf6+ Qxf6 13.Be4 OO 0-1(57) Larsen Gerry -- Skaug Thorbjorn, 2002.
    6...Nf6 7.Bg5 h6 8.Bxf6 Qxf6 9.Nf3 Qg6 10.OO Bxe4 11.d5 c6 12.Nxe4 Qxe4 13.dxe6 fxe6 1-0(29) Georgopoulos Steve -- Riggs Robert, 1993.

  20. 7.Nf3 Nf6 8.Bd2 Bxc3 9.bxc3 Nxe4 10.OO Nxd2 11.Qxd2 Bxf3 12.gxf3 OO 13.f4 Qh4 0-1(29) Clarke Thomas -- Basman Michael, 1984.
    7.d5 Qh4 8.Qf3 Nf6 9.dxe6 fxe6 10.Qe2 Nxe4 11.Nf3 Qg4 12.OO Bxc3 13.bxc3 Nxc3 0-1(36) Schulze Thimo Sebastian -- Carstensen Jan Christian, 2000.

  21. 9...Rg6 10.Qe3 Nxe4 11.Nf3 Rxg2 12.Rf1 Qf6 13.Be2 Ra5 0-1(35) Kirby P 2045 -- Roberts P 2201, 2005.

  22. 13.Rg8+ Ke7 0-1(16) Izuel Samitier Francesc 2077 -- Domingo Jordi, 2002.

  23. 7...Qh4 8.Bd3 Nf6 9.Nf3 Qh5 10.OO h6 11.Bd2 d6 12.Rfc1 Bxc3 13.Rxc3 Kd8 1-0(21) Stacey Jack -- Iglesias Pablo, 1999.

  24. 8.d5 Nf6 9.Bg5 h6 10.Bd2 OO 11.dxe6 dxe6 12.Nf3 fxe4 13.Nxe4 Bxd2+ 0-1(19) Schmidtgall Boris -- Carstensen Jan Christian, 2001; 9...fxe4 10.dxe6 OO 11.exd7 Nbxd7 12.Qc4+ Kh8 13.Qxb4 Ne5 1-0(33) Mueller Martin 2090 -- Carstensen Tim Matthias, 2001.

  25. 8...Bxe4 9.OO Bxc3 10.bxc3 Nf6 11.Ng5 OO 12.Nxe4 Nxe4 13.Bb2 Qh4 0-1(21) Holmes Donald A -- Basman Michael, 1986.

  26. 9.OO Nf6 10.Ng5 Bxc3 11.Nxe6 Qe7 12.Nxc7+ Kd8 13.Nxa8 Ba5 1-0(25) Gongora Maikel 2411 -- Campos Calvo Sotelo Juan 1949, 2003.

  27. 13.Nc5 Ba8 1-0(41) Chandler Murray G -- Basman Michael, 1985.

  28. 7...Nf6 8.f3 c5 9.Be3 cxd4 10.Bxd4 Nc6 11.Be3 d5 12.Ne2 dxe4 13.Bxe4 Nxe4 1-0(60) Araiza Nieto Edgar -- Halfon Enrique, 1995.

  29. 8.Qh5+ g6 9.Qe2 Nf6 10.Bg5 fxe4 11.Bxe4 Nxe4 12.Bxd8 Nxc3 13.bxc3 Bxc3+ 0-1(59) Pritchett Craig William -- Basman Michael, 1980; 11.Bxf6 Qxf6 12.Bxe4 Qxd4 13.Bxb7 Bxc3+ 1-0(26) Nevanlinna Risto -- Heinola Kari P, 1984.
    8.Bd2 Bxc3 9.Bxc3 fxe4 10.Bf1 Nf6 11.f3 OO 12.Be2 Nd5 13.Qd2 Nf4 1-0(46) Ly Kim Long -- Diederich Hauke, 1999.

  30. 13.fxe4 Nf6 0-1(22) Reynaud J -- Fondain G, 1998; 0-1(22) Remaud J -- Fondain Georges, 1998.

  31. 9...OO 10.Bxf6 Qxf6 11.Nf3 c5 12.OO cxd4 13.e5 Qg6 0-1(27) Bicchierai Gregory 2089 -- Vilaisarn Akkhavanh 2175, 2002.
    9...h6 10.Bxf6 Qxf6 11.Nf3 OO 12.OO Nc6 13.d5 Nd4 1-0(28) Suzuki Tomomichi -- Goto Hideo, 1989.

  32. 10.Bxe4 Nxe4 11.Bxd8 Nxc3 12.Qh5+ Kxd8 13.Qg5+ Kc8 0-1(27) Piay Augusto Diego 2288 -- Campos Calvo Sotelo Juan 2006, 2001; 12.bxc3 Bxc3+ 13.Kd1 Bxa1 0-1(29) Borrellas Comellas Josep -- Gardenes Santiago Manuel, 1996.

  33. 12.Qh4 Be7 13.Bxe7 Qxe7 0-1(20) Granat Russell -- Basman Michael, 1981.

  34. 13.Bxe7 Qxe7 0-1(53) Prasad Devaki V -- Basman Michael, 1985.

  35. 8...Ra5 9.Bd3 c5 10.Be3 Nc6 11.dxc5 Qd8 12.Nge2 Bxc5 13.Bxc5 Rxc5 0-1(62) Zarges Stephan -- Schulenburg Peter, 2000.

  36. 9.Nh3 c5 10.Ne2 f5 11.Bg5 Qh5 12.Bxe7 fxe4 13.Nef4 exf3 1-0(34) Junge Ralf -- Steffens Olaf, 1996; 9...OO 10.a3 h6 11.Be3 Bxc3 12.bxc3 f5 13.e5 g5 1-0(40) Pakkanen Jukka -- Heinola Kari P, 1984.
    9.Be3 f5 10.e5 f4 11.Bf2 Qh5 12.a3 Bxc3 13.bxc3 OO 1-0(38) Sorsa Nuutti 2226 -- Linnanen Lassi 2190, 2007; 10.Qb3 Bxc3 11.bxc3 fxe4 12.Bxd7+ Kxd7 13.Qxb7 Nbc6 =-=(40) Nilsson Nils Specht -- Welling Gerard, 1988.

  37. 10...g5 11.Bd2 g4 12.f4 Rg8 13.Ng3 Nbc6 1-0(28) Croonenborghs Tom 2140 -- Croonenborhgs Jan, 1999.

  38. 11.a3 Bc6 12.Bd3 Nd5 13.Bc4 Bxc3 =-=(22) Lagemann Tobias -- Dannis Nico, 1999.

  39. 13.Bd3 Bxc3 1-0(36) Flear Glenn C -- Bricard Emanuel, 1996.

  40. 9.Bd3 Nf6 10.Be3 Qa5 11.Ne2 c5 12.OO cxd4 13.Nxd4 Nc6 1-0(41) Howell D 2334 -- Dossett Christopher, 2004.
    9.Qe2 f5 10.exf5 Qxf5 11.Qe5 Bxc3+ 12.bxc3 Qxe5+ 13.dxe5 Ne7 1-0(44) Pineau Jacques -- Goto Hideo, 1989.
    9.Bf4 Qxb5 10.Ne2 Qb6 11.OO Nf6 12.a3 Bxc3 13.bxc3 c5 =-=(17) Victor Stefanie -- Diederich Hauke, 2002.
    9.Be2 Ne7 10.Bd2 OO 11.f4 Qa5 12.Nf3 f5 13.OO fxe4 0-1(39) Morneau F -- Meleg Mike, 1984.

  41. 9...Ne7 10.Ne2 f5 11.OO OO 12.exf5 Qxf5 13.Qxf5 Rxf5 1-0(49) Nordstrom Felix -- Nyander Joakim, 1995; 11.Nf4 Qf7 12.h4 OO 13.OO c6 1-0(65) Bronstein David I -- Beck Gerald, 1989.
    9...c6 10.Bc4 d5 11.exd5 exd5 12.Qe2+ Ne7 13.f4 Qg6 1-0(35) Fullbrook Nigel -- Skulsky Ian, 1988.

  42. 11...fxe4 12.fxe4 Nf6 13.OO Ng4 0-1(30) Hansson Daniel -- Larsson Torsten, 1988.

  43. 13.fxe4 Nf6 0-1(41) Hansen Bjarne -- Windelboe Werner, 1998.