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Chessville
From the
Green
Regulation
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Openings: AnalysisStopping the Marshall Gambit of the Slavby Peter Connor with Bill Whited [Click here to view the "Marshall_Gambit_Slav" PGN file in Chess Tutor, an interactive chess board.] [Or download the PGN file to use in your own chess program.] In Callinan-Connor, 2002, APCT Warren Final, some interesting discoveries were made that simplify Black’s task in defending against the dangerous Marshall Gambit. 1.d4 d5 2.c4 e6 3.Nc3 c6 This is the Noteboom variation of the Semi-Slav defense, a simple pawn triangle. One idea behind the Noteboom is to defang the exchange variation of the Queen's Gambit, since after cxd5 exd5, there is no black knight to pin on f6. Another very good thing about the Noteboom is its lack of coverage in opening manuals. For example, it is not even mentioned in Schiller's Standard Chess Openings, though the Noteboom has been played even by Kramnik. 4.e4 dxe4 5.Ne4 Bb4+ 6.Bd2
The Marshall Gambit, named after the famous American player Frank Marshall,
involves sacrificing the e-pawn for open lines. If White retreats the knight
to c3, he would have saved the pawn but gotten a (slightly) inferior
position after Nf6. By the way, the first game in which this line was played
was Marshall-Schlechter, Monte Carlo 1902 (1-0). 8...Nbd7 9.Nf3 c5 10.Bc3 Ngf6 This rather quiet defense has become more popular in recent years. 11.Qd6 The only move to cause Black trouble; after 0-0 0-0 White should be lucky to draw. 11...Qg6 There aren't many games with this move. GM Susan Polgar, annotating her 1994 game with Georgiev, suggested that Qg6 couldn't be played due to 12.Bd3, but didn't analyze the response Ne4! 12.Nd2! A big disappointment; I was counting on 12.Bd3 Ne4 and (i) Bxe4 Qe4+ is great for Black, (ii) Rd1 Nxd6 13.Bxg6 hg6 14.Rxd6 leaves Black just a pawn up with Queens off; and (iii) Qc7? just loses to Qxg2. 12...a5 13.0-0 Ra6 14.Qc7 0-0 15.Bf3 White seems to have some annoying pressure, although the only GM level game to reach this position was drawn after 15...Re8 (Stohl-Seitaj 1994). But Black can defend more simply. 15...Ra8 16.Rfe1 e5! 17.Bxe5 Ne8 Black has a perpetual attack on the White Queen unless White is willing to accept an inferior and probably losing position. 18.Qd8 Nf6 19.Qc7 Ne8 20.Qd8 Nf6 1/2-1/2 If
Black plays Qe7, then after Re8 21.Bxf6 Rxe7 Bxe7 White doesn't have enough
for the Queen, while after 21.Qd6 Ra6 Qc7 Rae6 White saves the Queen, but
his King will be massacred after Bxf6 Rxe1+. For those of you who are
interested in the complex side variations of this game, we are including an
elaborate set of notes to the move 12.Bd3. 13.Ne4 produces extreme
complications for both sides but leads to a win for Black with best play.
That having been said, it would extremely difficult for both side to
navigate their way through this thicket of complications with their clocks
ticking! 1.d4 d5 2.c4 c6 3.Nc3 e6 4.e4 dxe4 5.Nxe4 Bb4+ 6.Bd2 Qxd4 7.Bxb4 Qxe4+ 8.Be2 [8.Ne2] 8...Nd7 [8...Qxg2 9.Qd6 Qxh1 10.Qf8+ Kd7 11.0–0–0+ Kc7 12.Qd8#] 9.Nf3 c5 10.Bc3 Ngf6 11.Qd6 [11.0–0 0–0 =] 11...Qg6
[11...Qc6] 12.Nd2 [12.Bd3 Ne4 (12...Ne4 13.Qc7 Qxg2) 13.Bxe4 (13.Rd1 Nxd6 14.Bxg6 hxg6) 13...Qxe4+ 14.Kd2 Qxc4 15.Rhd1 f6 –+; 12.Bd3 Ne4 13.Rd1 Nxd6 14.Bxg6 hxg6 15.Rxd6 Ke7 16.Rd2 f6 17.0–0 –+; 12.Bd3 Ne4 13.Qc7 Qxg2 –+; 12.Bd3 Ne4 13.Qf4 Qxg2 14.0–0–0 Nxc3 15.Rhg1 (15.bxc3 Qh3 16.Ng5 Qh5 17.Be4 h6 18.Qxf7+ Qxf7 19.Nxf7 Kxf7 20.Bxb7 Bxb7 21.Rxd7+ Kf6 22.Rxb7 Rhb8 23.Rb5 Rxb5 24.cxb5 a6 25.bxa6 g5 26.c4 Rxa6 27.Kb2 Kf5 28.h4 e5 29.Kb3 Rd6 30.hxg5 Kxg5 31.f3 Kf4 32.Rh5 Re6 33.Rh3 Rb6+ 34.Ka4 Rb4+ 35.Ka5 Kg5 36.Rg3+ Kf4 37.Rh3 and the ending is probably drawn although Black has an edge) 15...Qxf2 16.Rdf1 Qe2 17.Ng5 Nxa2+ 18.Kb1 Qxd3+ 19.Kxa2 0–0 20.Nxf7 g6 21.Nh6+] 12...a5 13.0–0 Ra6 14.Qc7 0–0 15.Bf3 Ra8 16.Rfe1 e5 17.Bxe5 Ne8 18.Qd8 Nef6 19.Qc7 Ne8 20.Qd8 [20.Qd8 Nef6 21.Qe7 Re8 22.Bxf6 Rxe7 23.Bxe7 And White does not have enough material to compensate for the loss of the Queen.; 20.Qd8 Nef6 21.Qe7 Re8 22.Qd6 Ra6 23.Bxf6 Rxd6 24.Rxe8+ Nf8 25.Be7 h6 26.Rxf8+ Kh7 27.Bxd6 Qxd6 28.Rxc8 Qxd2 29.Re8 Qxb2 30.Rae1 Qxa2 31.Bxb7 Qxc4 32.R8e7 a4 33.Be4+ g6 34.h3 a3 35.Ra7 a2 36.Bf3 Qc3 37.Rf1 Qb3 38.Bd1 Qb1 39.Be2 Qb2 40.Bc4 ++] 20...Nef6
[20...Nef6 21.Qe7 Re8 22.Qd6 Ra6 23.Bxf6 Rxe1+ 24.Rxe1
Rxd6 25.Re8+ Nf8 26.Be7 h6 27.Rxf8+ Kh7 28.Bxd6 Qxd6 29.Rxc8 (29.Rxf7
Qxd2 30.Be4+ Kg8 ++) 29...Qxd2 –+; 20...Nef6 21.Qe7 Re8 22.Qd6 Ra6
23.Bxf6 Rxe1+ 24.Rxe1 Rxd6 25.Re8+ Nf8 26.Be7 h6 27.Rxf8+ Kh7 28.Bxd6 Qxd6
29.Be4+ f5 –+(29...g6 ??? 30.Rxf7+ =) ] ½–½
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