Saturday, September 24, 2011

Diemer-Duhm Gambit attack vs Caro-Kann Defence

Here's another bonus game. What do you do when you go through a stretch where you are scoring lower than usual? After playing dozens of practice blitz games on the same day, I was doing rather poorly. Finally I decided to see what lines had my best lifetime performance ratings and play those for a bit. Thus I won my last eight games of the day.

As Black after 1.e4, there are five defences I have played more than 1000 times each (over 40 years). My best was 1...Nf6 Alekhine Defence (2056); however at that moment 1...c6 Caro-Kann Defence and 1...c5 Sicilian Defence also had the same performance. My other top defences are 1...Nc6 Queen's Knight Defence (2053) and 1...e5 Open Game (only 2044 but higher winning percentage vs many lower rated players).

Recently I had been playing 1...Nc6; I decided to try some other lines. I played 1.e4 e5 and got two King's Gambits, then one Sicilian Wing Gambit and one Caro-Kann Defence (the game below). My opponents for these games were lower rated. The performance for the Sicilian and Caro-Kann both dropped one point to 2054 because my victories did not yet increase my lifetime winning percentages with those moves.

My Caro-Kann game was not just any old variation. It was a cousin of the Diemer-Duhm Gambit which normally is reached by 1.e4 e6 2.d4 d5 3.c4 dxe4 4.Nc3 intending 5.f3 with play similar to a Blackmar-Diemer Gambit. In fact earlier that same day my 1500 rated opponent had in fact played a BDG Teichmann as White.

The Caro-Kann Defence game, OracleMcSnacker-Sawyer, began 1.e4 c6 (Now White thought for 11 seconds, but White played the next five moves using a total of five seconds.) 2.d4 d5 3.c4 dxe4 4.Nc3 Nf6 5.f3 exf3 6.Nxf3 Bg4 7.Be3 e6 8.Bd3 Nbd7 9.0-0 Be7 10.Qe1 0-0 11.Qh4 (Wow! This 1506 rated opponent is playing aggressive and fast!?)

Now I play some inaccuracies and get into more trouble. 11...Bxf3 12.Rxf3 g6? (12...e5!? or 12...c5!=) 13.Bg5 Nd5!? (Playing for exchanges to relief some pressure.) 14.Bxe7 (Okay it worked, but White missed 14.Ne4 or 14.Rh3! with advantage.) 14...Qxe7 15.Qh6 Nxc3 16.bxc3 f5. Black fights back. Eventually I won a piece and the game.

OracleMcSnacker (1506) - Sawyer, ICC 5 0 Internet Chess Club, 23.09.2011 begins 1.e4 c6 2.d4 d5 3.c4 dxe4 4.Nc3 Nf6 5.f3 exf3 6.Nxf3 Bg4 7.Be3 e6 8.Bd3 Nbd7 9.0-0 Be7 10.Qe1 0-0 11.Qh4 Bxf3 12.Rxf3 g6 [12...c5!=] 13.Bg5 Nd5 14.Bxe7= [14.Rh3! h5 15.Bxe7 Nxe7 16.g4 Kg7 17.gxh5 Nf5 18.Qf2 Rg8 19.Bxf5 gxf5 20.Qf4 Qf6+/=] 14...Qxe7 15.Qh6 Nxc3 16.bxc3 f5 17.Re1 e5 18.dxe5-/+ [18.c5 Qg7 19.Qh4 e4=/+] 18...Nxe5 19.Rfe3?-+ [19.Kh1 Qf6 20.Rh3 Rf7-/+] 19...Qc5 20.Kh1-+ Ng4 21.Qg5?-+ [21.Qf4 Nxe3 22.Rxe3 Rfe8-+] 21...Nf2+ 22.Kg1 Nxd3 White resigns 0-1

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