Friday, March 24, 2017

BDG Huebsch John Crompton

Huebsch Gambit avoids Blackmar-Diemer Gambit in theory by not in spirit. The Huebsch keeps the feel, the tactics, and the strategy of the BDG. White has five reasonable responses after 1.d4 Nf6 2.Nc3 d5 3.e4 Nxe4 (3...dxe4 4.f3 is a BDG) 4.Nxe4 dxe4. Options include 5.Bc4, 5.Be3, 5.Bf4, 5.c3, or 5.f3. Those interested in critical variations can find my detailed analysis in Blackmar-Diemer Theory 4.

Black is up a pawn but is missing the helpful Nf6. White does have compensation. If Black is rated over 2000 in a slow game, then White has his work cut out for him. If Black is rated below 2000 in a blitz game, White's chances skyrocket.

John Crompton as White (JECmate) prefers the logical 5.f3!? If Black accepts with 5...exf3 then in theory White has full compensation for the gambit. In practice, Black grabs the pawn about half the time. Crompton demonstrates that White can win quickly because he makes immediate threats that must be taken seriously, or else it's mate.

JECmate (1609) - Qu1ntana (1545), Live Chess Chess.com, 06.02.2017 begins 1.d4 Nf6 2.Nc3 d5 3.e4 Nxe4 4.Nxe4 dxe4 5.f3!? exf3 [5...e5!-/+] 6.Nxf3 g6 [In another Crompton game Black tried 6...Bg4 7.Bc4 (7.c3=) 7...e6 8.c3 Bd6 9.0-0 0-0 10.Bd3 Bxf3 11.Rxf3 Nd7 12.Bxh7+ (12.Qe2=) 12...Kh8 (12...Kxh7 13.Rh3+ Kg8 14.Qh5 f6-+) 13.Bd3 g6 14.Rh3+ Kg7 15.Bh6+ Kg8 16.Qg4 a6 17.Bxg6 Nf6 18.Qg5 Nh7 19.Bxh7+ Kxh7 20.Qg7 mate 1-0. JECmate - sexsy11, Chess.com 2017] 7.Bc4 Bg7 8.0-0 0-0 9.c3 Nd7 10.Qe1 Nf6 11.Bg5 a6 12.Qh4 b5 13.Bb3 Bb7 14.Bh6 Bd5 15.Ng5 Bxb3? [15...Re8 16.Bxg7 Kxg7 17.Rxf6 exf6 18.Qxh7+ Kf8 19.Rf1 Re2 20.Qh8+ Ke7 21.Qxf6+ Ke8 (21...Kd7 22.Bxd5+-) 22.Qh8+ Ke7= with a draw by repetition.] 16.Bxg7 [White stands much better after 16.axb3! Qd5 (16...Bh8 17.Bxf8 Kxf8 18.Nxh7+ Nxh7 19.Qxh7+-) 17.Bxg7 Kxg7 18.Rxf6 h6 19.Rxf7+ Rxf7 20.Nxf7 Qxf7 21.Rf1 Qe6 22.Re1+-] 16...Kxg7
17.Rxf6?! [This sacrifice is very tempting, but White should recapture the bishop first. 17.axb3 h6 18.Ne4=] 17...Kxf6? [Correct is 17...h6! and now if 18.Rf2 hxg5 19.Qxg5 Bd5-+ White is down a bishop.] 18.Rf1+ 1-0

Sets: Chess Games 1.e4 Series and Chess Games 1.d4 Series
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Friday, March 17, 2017

Blackmar-Diemer Ryder Normand

Nicolas Normand of France wins with the Blackmar-Diemer Gambit Ryder. He finds a mating attack in a similar fashion as seen in the BDG Euwe Variation. Nicolas sent me this comment: "I succeeded in winning a 1950-Elo player of my club on the board in a 5mn blitz with the same position and 10.Bxh6 sacrifice."

The Ryder Gambit 5.Qxf3 is a risk in the same way double teaming a player in sports would be. White's offensive threats are so dangerous that Black does not bother with whatever is left uncovered. If your opponent has plenty of time, if he never gets nervous, if he always defends perfectly, then you could be in trouble. Real chess is not like that.

Your opponent will miss things when you make big threats, especially in blitz play. Here Normand rips open Black's kingside. White finds a forced checkmate. At the end, Black has only two pieces remaining and those pieces never moved.

Deathstar81 - NN, Lichess (5mn + 5s), 20.01.2017 begins 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Qxf3 e6 6.Bd3 Be7 [6...h6 would transpose to another game Nicolas played that went 7.Nge2 Bd6 8.0-0 a6 9.Ne4 Be7 10.c3 Nbd7 11.N2g3 (11.Bc2!?+/=) 11...e5? (11...0-0 12.Nxf6+ Nxf6 13.Bxh6 gxh6 14.Qf4=) 12.Nh5 0-0 13.Bxh6 Nxh5 14.Qxh5 Nf6 15.Nxf6+ Bxf6 16.Bxg7 Bxg7 17.Qh7# 1-0 DEATHSTAR81-ramafi52/Chess.com 2016] 7.Nge2 0-0 8.0-0 Nc6 9.Qh3 h6 10.Bxh6 gxh6? [The critical line is 10...e5 11.Qh4 Ng4 12.Bg5 g6 when White has 13.Ne4+/-] 11.Qxh6 Re8 12.Rf3 [12.Rxf6!+-] 12...Ne4 13.Nxe4 Ne5 14.Rg3+ Ng6 15.Rxg6+ fxg6 16.Qxg6+ Kf8 17.Rf1+ Bf6 18.Rxf6+ Qxf6 19.Qxf6+ Kg8 20.Ng5 Re7 21.Qxe7 1-0

Sets: Chess Games 1.e4 Series and Chess Games 1.d4 Series
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Wednesday, March 1, 2017

French Defence John Crompton

John Crompton played this cute quickie in the French Defence. The Exchange Variation starts with symmetrical pawn structure but either side can attack with pawns and pieces. Paul Morphy played 3.exd5 vs the French Defence and he won almost all the time.

Crompton sent me more games in this same line. Often John got great positions out of the opening with the Black pieces. He plays as "JECmate". John Crompton wrote of this game: "Tim Sawyer, I just started to play the French when I got your book online."

White’s one tempo lead disappeared after 4.h3 c5 5.dxc5 Bxc5 when Black led in development. His tenth move caught my attention with 10...Qg3!? Hope you like it.

My new French 3.Be3 Playbook is a step by step guide to the Alapin Diemer Gambit.

I published French & Caro Puzzles which are 200 Semi-Open checkmates after 1.e4 (without 1...e5 or 1...c5). Half of the positions in that book come from French Defence positions early in the game. It's target practice.

My Chess Training Repertoire this week covers French Defence Exchange Variation. My email goes to those subscribed to my list at 11:45 AM Eastern time Thursday.

prodonvito (1568) - JECmate (1605), Live Chess Chess.com, 17.02.2017 begins 1.e4 e6 2.d4 d5 3.exd5 exd5 4.h3 [White was apparently afraid of having his knight pinned after 4.Nf3 but he should have been afraid of falling behind in development.] 4...c5 [Black is ready for action, even at the minor risk of an isolated pawn. Obviously good is 4...Nf6=] 5.dxc5 [5.Bb5+ Nc6 6.Nf3=] 5...Bxc5 6.Nf3 Nc6 7.Bd3 [7.Nc3 Be6 8.Bd3=] 7...Nf6 [Another plausible continuation is 7...Qe7+ 8.Qe2 Qxe2+ 9.Kxe2 Nf6 10.Re1 0-0 11.Nc3 Re8+ 12.Kf1 Rxe1+ 13.Nxe1 Be6=] 8.0-0 0-0 9.Re1 [9.Nc3=] 9...Qd6 [9...Qb6!?=/+ aims at the vulnerable f2.] 10.Nc3? [White misses that his f2 pawn is pinned. He could break the pin with 10.Be3=] 10...Qg3!? [This fun move is why the game caught my attention. Stronger would be first 10...Bxh3! 11.gxh3 Qg3+ 12.Kh1 Bxf2 13.Bf1 Nd4-+ and White is crushed by force.] 11.Rf1? [Black is rewarded for his boldness. His queen would have to retreat after 11.Be3 Bxe3 12.Rxe3 Qc7=] 11...Bxh3! 12.Bxh7+ [White would have to give up the queen to stop checkmate. 12.Ne1 Ng4 13.Qxg4 Bxg4 14.Nxd5 Qe5-+] 12...Nxh7 13.Qxd5 Qxg2# 0-1

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