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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