Monday, March 30, 2015

Blackmar-Diemer Poisoned Pawn 8...Bxc2

In the Blackmar-Diemer Gambit there is a wild BDG Ziegler 8...Bxc2 line which is like a Poisoned Pawn line. How ironic it was that my opponent "PoisonPawn" grabbed that pawn in a three minute blitz game last year. I know the first dozen moves of this variation pretty well, but at a speed of 2-3 seconds per move, I miss stuff a lot. Nowadays theory favors the solid retreat 8...Bg6 as Black's only chance for advantage.

Our game shows the real vulnerability of the Black king in this 8...Bxc2 line. That marked monarch is caught in the middle and under assault from all the remaining White forces. Computers usually find wins for White in this Blackmar-Diemer Gambit line, but humans may or may not depending on knowledge, tactical skill, pattern recognition and time to calculate. I won quickly but could have won even quicker.

Sawyer (1903) - PoisonPawn (1962), ICC 3 0 Internet Chess Club, 20.09.2014 begins 1.d4 Nf6 2.f3 d5 3.e4 dxe4 4.Nc3 exf3 5.Nxf3 c6 6.Bc4 Bf5 7.0-0 e6 8.Ng5 Bxc2 9.Nxf7 Kxf7 10.Qxc2 Qxd4+ 11.Be3 Qxe3+ 12.Kh1 Bc5 [12...Be7 13.Rae1+/-] 13.Rae1 Qh6 [13...Qd4 14.Ne4+-] 14.Bxe6+ [14.Rxe6!+-] 14...Kf8 15.Ne4 Be7 16.g4 [16.Qb3+-] 16...g5 17.Rf5 [17.Nxf6! Bxf6 18.Bb3 Nd7 19.Qf5 Rd8 20.Qe6 Qg7 21.Qd6+ Qe7 22.Qxe7#] 17...Ke8 18.Nxf6+ Bxf6 19.Bc8+ Kd8 20.Bxb7 Kc7 21.Bxa8 [21.Bxc6 Nxc6 22.Re6+-] 21...Bd4 22.Rf7+ Nd7 23.Ree7 Rd8 24.Qa4 Bb6 25.Qd1 Rxa8 26.Qxd7+ Black resigns 1-0

You may also like: King Pawn (1.e4 e5) and Queen Pawn (1.d4 d5)
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Thursday, March 26, 2015

Guest Gruenfeld Defence without 3.Nc3

When White delays 3.Nc3 in the Gruenfeld Defence, there is the possibility of kicking the Black knight off d5 without allowing it to chop off the horse on c3. Here my "guest" opponent plays quite well. I gave him or her a fake rating of 1600, but that might be off by a few hundred points.

For purposes of calculating my performance rating over thousands of games, I often make up a rating for unrated opponents based on how hard I feel they pushed me or how much they let me get away with. It is purely subjective, but based on 50,000 games of personal experience. My own Internet Chess Club rating has been creeping upwards this year to 2081 in this game.

guest7153 (1600) - Sawyer (2081), ICC 4 2 u Internet Chess Club, 18.03.2015 begins 1.d4 Nf6 2.Nf3 g6 3.c4 d5 4.cxd5 Nxd5 [A very interesting idea here is 4...Bg7 5.Qa4+ c6 6.dxc6 Nxc6 7.Nc3 Bf5 8.g3 0-0 9.Bg2 a6 10.0-0 b5 11.Qd1 Rc8 12.Bf4+/=] 5.e4 Nb6 6.h3 Bg7 7.Nc3 0-0 8.Be2 Nc6 9.Be3 e5 [The alternative is 9...f5 10.exf5+/=] 10.dxe5 [Up to here White has played very well. It would seem he should continue 10.d5! Ne7 11.Bc5+/-] 10...Nxe5 11.Qxd8 Rxd8 12.Nxe5 Bxe5 13.f4 Bg7 14.Kf2 c6 15.Rhd1 Be6 16.Rac1 Nc4 17.Rxd8+ Rxd8 18.Bxa7 [18.Bxc4! Bxc4 19.b3=] 18...Nxb2 19.Rb1? [19.Kf3 Nd3=/+] 19...Nd3+?! [Having previously planned this move in blitz, I missed the better move 19...Bxc3!-+] 20.Bxd3 Rxd3 21.Ne2 b5 22.Rc1 Bc4 23.Be3 Ra3 24.Rc2 [24.Rd1 h5-/+] 24...Rxa2 25.Rxa2 Bxa2 26.Nd4 [26.Bc5 Bf8-/+ and White cannot change the fact the Black has two connected passed pawns.] 26...b4 27.Nxc6 b3 28.Bc1 b2 29.Bxb2 Bxb2 30.g4 Kf8 31.h4 Bc4 32.h5 Bc3 33.hxg6 hxg6 34.Ke3 Bb5 35.Nd4 Bxd4+ 36.Kxd4 Ke7 37.Ke5 f6+ 38.Kd5 Be2 39.g5 fxg5 40.fxg5 Bf3 41.Ke5 Bg4 42.Kf4 Be6 43.Ke5 Bd7 44.Kd5 Bc8 45.Ke5 Bb7 46.Kf4 Ke6 47.e5 Bc6 White resigns 0-1

You may also like: King Pawn (1.e4 e5) and Sicilian (1.e4 c5)
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Wednesday, March 25, 2015

Powerful New Blackmar-Diemer Move

The Blackmar-Diemer Gambit has many variations that can quickly lead to wide open tactics at a moment's notice. Here in a BDG Teichmann, Black's 8th move allows me to illustrate a move that I found while writing my upcoming BDGK4 book which I hope will be out later this year.

Chess engine analysis in 2015 reveals that White has 9.Rh2! which a new and powerful response that leads to a big advantage. I missed it in this blitz game, but I can still pass it on to you here.

Sawyer (2074) - dcmarty (1714), ICC 3 0 u Internet Chess Club, 15.03.2015 begins 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bg4 6.h3 Bh5 7.g4 Bg6 8.Ne5 Be4 [8...e6=] 9.Nxe4 [9.Rh2!+-] 9...Nxe4 10.Qf3 [10.Bg2+/-] 10...Nf6 [10...Nd6 11.Bg2+/-] 11.g5 [White should grab the b-pawn immediately. 11.Qxb7!+-] 11...Qxd4 12.Nxf7 [I saw 12.Qxb7 Qxe5+ 13.Be2 Qd5 but missed that White now has 14.Bf3!+-] 12...Kxf7 13.gxf6 gxf6 14.Be3 [14.Qh5+!+-] 14...Qxb2 15.Rd1 [15.Qh5+!+-] 15...Nc6 [15...Qb4+ 16.c3 Qxc3+ 17.Kf2+/-] 16.Bc4+ Ke8 17.Qh5# Black checkmated 1-0

You may also like: King Pawn (1.e4 e5) and Queen Pawn (1.d4 d5)
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Friday, March 20, 2015

Tiger French Defence Alapin Diemer Gambit

Twenty years ago I wrote a book on the Alapin Diemer Gambit which was called the Alapin French: Tactics For White. It is fun, but not too serious. The French Defence is an opening with well-known time tested methods of development. After 1.e4 e6 2.d4 d5 (in whatever move order), White has good knight moves such as 3.Nc3 and 3.Nd2. There are reasonable pawn moves like 3.e5 and 3.exd5. But usually the bishop moves receive little comment in theory. My friend Ray Haines likes the solid 3.Bd3 and Alapin played the gambit line 3.Be3!? later revived by Emil J. Diemer. My own performance rating is about the same, no matter which third move I choose.

The Alapin French is basically a slower Blackmar-Diemer Gambit. If your opponent does not counter sharply, then White is blessed with a great game. Today's game Tiger of Chess as Black ultimately declines the gambit by 5...b6, so I grab a tiger by the tail.

In 2014 I intentionally goofed off all year playing a lot of fast blitz games in speculative lines vs lower rateds players. Like in the game below, often I won. Alas, sometimes I failed and my rating suffered. This year in 2015 it time to get more serious. Just a little bit. I am playing better chess and my rating shows.

Sawyer (1915) - TIGEROFCHESS (1682), ICC 3 0 Internet Chess Club, 14.09.2014 begins 1.d4 d5 2.e4 e6 3.Be3 dxe4 4.Nd2 Nf6 5.f3 b6?! [A critical line is 5...Nd5 6.Qe2 Nc6 7.c3 exf3 8.Ngxf3 Be7=/+] 6.fxe4 Bb7 7.Bd3 Be7 8.Ngf3 Nbd7 9.0-0 c5 10.e5 Ng8? [10...Nd5=] 11.c3 a6 12.Qe2 b5 13.Be4 Qc7 14.Bxb7 Qxb7 15.Ng5 Nh6 [15...cxd4 16.Nxf7 dxe3 17.Nb3+/-] 16.Nge4 [The best way to continue is 16.Qh5!+-] 16...c4? [Black missed the good move 16...Nf5! 17.Bg5!+/= when White is only a little better.] 17.Bxh6 gxh6 18.Qf3 0-0-0 19.Qxf7 Bg5? 20.Nd6+ Black resigns 1-0

You may also like: King Pawn (1.e4 e5) and Queen Pawn (1.d4 d5)
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Monday, March 2, 2015

Joseph Byrnes in Crazy Caro-Kann Clash

Joseph J. Byrnes challenges my Caro-Kann Defence in the critical line 3.e5 Bf5 4.Nc3 in an early email game played in 1996. My game vs Byrnes is typical of the 4.Nc3 e6 5.g4 line in the Caro-Kann Advance. This ends up being an unbalanced wild and crazy game. Being from the early days of email, it was a fast approach to the slow process of correspondence play.

Byrnes (1900) - Sawyer (1960), EMQ-2 corr APCT, 05.12.1996 begins 1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3 e6 5.g4 Bg6 6.Nge2 c5 7.h4 h5 8.Nf4 Nc6 [8...Bh7=] 9.Nxg6 fxg6 10.Ne2 Nge7!? [10...Qc7=] 11.c3!? cxd4 12.cxd4? [12.Nxd4=] 12...hxg4 13.Nf4 Kd7 [13...Qb6!=/+] 14.Qxg4 Nxd4 15.Be3 [15.Bb5+!?] 15...Nc2+ 16.Kd2 Nxa1 17.Bb5+ Nc6? [17...Kc8 18.Qxe6+ Kb8=] 18.Nxe6 Qa5+ [18...Bb4+ 19.Ke2+-] 19.Kd1 Kc8 20.Nc5+?! [White should grab the free bishop with 20.Nxf8+! Kb8 21.Bc5+-] 20...Kb8 21.e6? [This gives Black a chance. Correct is 21.Qd7+-] 21...a6? [21...Bd6-+ and Black is winning.] 22.Nd7+ [Even better is 22.Qg3+! Kc8 23.Bxc6 bxc6 24.e7!+- with a crushing attack.] 22...Kc7 23.Bb6+ Qxb6 24.Nxb6 Kxb6 25.Bxc6 bxc6 26.Qxg6 Rh6 27.Qf7 [27.Qg4+/-] 27...Rf6 28.Qd7 Ra7 29.Qd8+ Kc5 [29...Rc7 30.Re1+/=] 30.Qa5+ Kd6 31.Re1 Re7 32.Qxa6 [Best is 32.b4! Rfxe6 33.Qd8+ Rd7 34.Qxf8+!+- winning the bishop.] 32...Rexe6 33.Rxe6+ Rxe6 34.Qa3+ c5 1/2-1/2

You may also like: King Pawn (1.e4 e5) and Queen Pawn (1.d4 d5)
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