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Dr. J
Member since Dec-22-06 · Last seen May-22-13
Jerry Cohen
Montreal, Quebec, Canada
mid-50's
Highest-ever: about 2000
Current: 1700-ish
Ph.D. in Mathematics*

Those are the answers. The questions are up to you.

(*So I legitimately am Dr.J. I am, however, quite possibly the world's worst basketball player.)

Here is my very best game. I still count it as the 3rd-best creative achievement of my life.

White: Murray Johnston (probably M Johnston)

Black: Jerry Cohen

Quebechecs Open, Round 1, 20 April 1973
1 c4 c6
2 g3 d5
3 Bg2 Nf6
4 Nf3 Bf5
5 b3 Nbd7
6 Bb2 e6
7 d3 Bd6
8 0-0 Qe7 For this position: Opening Explorer

9 Re1 Bg4
10 Nbd2 e5
11 h3 Bh5
12 e4 d4
13 g4 Bg6
14 Nh4 h5
15 Nf5 BxNf5
16 exf5 hg
17 hg


click for larger view

.17 ... 0-0-0 The first sacrifice
18 Bxd4 Bc5
19 Bc3 Qd6
20 Nf1 Rh4
21 Bf3 Rdh8
22 Qe2


click for larger view

.22 ... Nxg4 The second sacrifice
23 Bxg4 Qh6 Threatening ...Rxg4+
24 Kg2
Now it's mate in 6:
24 ... Rh2+ And the third. (24...Rxg4+ is also mate in 6)

25 Nxh2 Qxh2+
26 Kf3 Qf4+
27 Kg2 Rh2+
28 Kg1 Qg3+
0-1


   Dr. J has kibitzed 558 times to chessgames   [more...]
   Apr-30-13 V Vepkhvishvili vs K Shavgulidze, 1983 (replies)
 
Dr. J: <Phony Benoni> Best of luck! Looking forward to seeing you back here.
 
   Apr-05-13 Lombardy vs Fischer, 1958 (replies)
 
Dr. J: My solution was 48...Rb4+ 49 Ka3 c2. Is this better, worse, or equivalent?
 
   Feb-20-13 Miles vs Plaskett, 1983 (replies)
 
Dr. J: <lost in space: 17...Qe1!!> Well done, sir! You fully deserve the two exclamation points you awarded it.
 
   Jan-30-13 Dao Thien Hai vs F Jenni, 1998 (replies)
 
Dr. J: Here's a second solution: 28 Ba7 Ra8 29 Nb6 Rxa7 30 Nxc8 Ra8 31 Qc7+ and Black's position collapses, as White must win at least Rook. So is this as good as, or better than the game continuation? Hard to say, because of possible bail-out variations. In my line Black would have done ...
 
   Jan-23-13 Petrosian vs A Sidorov, 1950 (replies)
 
Dr. J: It seems hard to believe that 6...Bd6 is a losing move, as Clarke's notes seem to imply. Could Black have improved later? For instance 17...f6 or 17...Bxa2?
 
   Jan-22-13 Cochrane vs Mohishunder, 1854 (replies)
 
Dr. J: <Dr. J: <OhioChessFan> That was an utterly uncalled-for insult that comes right up to the border of being a posting-guideline violation> I completely retract this comment, with apologies. I did not get the reference.
 
   Jan-15-13 A Kargin vs P Haba, 1998 (replies)
 
Dr. J: Just to clarify: 32 Kg1 Bxg4 33 hxg4(?) Bxf2+ 34 Kh1 h3. 32 Ke1 Bxf2+ 33 Ke2* Bxg4+ 34 hxg4 h3!. *33 Nxf2 Rxf2 34 Be2 Rxg2+ 35 Kd2 Qf4+ 36 Kc3 (forced) Rxe2. White loses loads of material in all cases.
 
   Jan-13-13 Shirov vs B Dagenais, 2012 (replies)
 
Dr. J: <newzild> What does Rybka think of 16...Qxb2+ 17 Nge2 b6 e.g., 18 Rb1 Qh2 19 Rb3 Qa5 20 Ra3 Qc5 21 Rxa7 e5?
 
   Jan-04-13 Yusupov vs M Sorokin, 1998 (replies)
 
Dr. J: After 33 Qc7+ [DIAGRAM] doesn't Black have much better drawing chances with 33...Kg8? How does White avoid losing back one of the pawns?
 
   Dec-27-12 Xie Jun vs C Peptan, 1998 (replies)
 
Dr. J: After 35...Kb8 White is already ahead in material (RR vs. Q), and has a wicked attack, so it is not surprising that there might be more than one way to win. A)36 Nb5 as per the game, requires calculation (or appraisal) of several lines, e.g., 36...Qd8, requiring some work, but leaves ...
 
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