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at 16:10 black can save the rook but drops a knight after kc6 qxd6 bxd6 bxc6 rb8
Thanks, excellent discussion of an important topic.
To cLippi: I don't think this "Nxc3 bxc3 a6 b6 Qxc3+ Bd2 Qc4 dxe6 Qxe6 Rb1 Bb7 Qa4 Be7 shows black in not such big trouble" is a main variation; I will post what I think is the best way to play for White. I believe the position at 5:10 is indeed very good for white.
The moves being
1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. Bg5 Qa5+ (?!) 6. Nc3 (!) Ne4 (?!) 7. cxb5 (!).
I don't trust 5...Qa5+ very much in the situation after white's 5th move.
Mhm, I somehow do not understand why the position at 05:10 is so much better for white! In fact, Houdini for example evaluates it as around -0,20 for black - that is definitely not game-deciding or refuting. Often, not even engines can exploit such a slight advantage. The main variation Nxc3 bxc3 a6 b6 Qxc3+ Bd2 Qc4 dxe6 Qxe6 Rb1 Bb7 Qa4 Be7 shows black in not such big trouble.
Excellent teaching style! Thank you.
Very very good video!
by IM Mark Ginsburg
IM Mark Ginsburg continues his series on the effectiveness, and sometimes lack thereof, of computer analysis engines. As usual, Mark has done his homework to provide us with some well prepared material. Today's topic is seen through the "looking glass" of Theoretical Opening Preparation -- in particular, the Blumenfeld Gambit. This topical line has been frequented several times of late at the high levels of chess, but has white been consistently employing the best options? Watch and find out...
Related: << Previous Video in the Series
Article: Computers in chess... Good or Evil?
Article: Computers in Chess: Cheaters Paradise.
Video: The Blumenfeld Gambit Part 1
Video: Live Sessions 7
Play Key Position Vs. Computer
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IM Mark Ginsburg
Mark learned chess at age 6 but only at age 13 was he informed that tournaments existed! He received the International Master title at age 22 and had a peak USCF rating of 2578 in 1993. Mark has twice been the Manhattan Chess Club Champion, and has also played quite a bit overseas in Belgium, Holland, England, and Switzerland. Mark has a PhD in Information Systems from NYU. Mark currently resides in Tucson, AZ and has been Co-State Champion of Arizona twice. Chess is a difficult proposition to teach because it combines logic and imagination, but Mark believes that if logic is applied then imaginative ideas work better. This belief comes through in his teaching style and practices...
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