My article in
Kaissiber 33 (2008) pp. 46-56, studied the Berlin Defence of the Kieseritzky Gambit in detail:
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6, including a single-page refutation of Rubinstein's move 6.d4. In my modest opinion, this was a major achievement. The line 6.d4 had been regarded as playable by chess authors for decades. Some people have expressed their doubts though, most prominently Robert Hübner, who didn't believe that 6.d4 was correct (can s.o. help, giving the source?). Hübner gave no concrete analysis.
John Shaw prefers to present "Ivanchuk's Refutation", after a game Fedorov - Ivanchuk, Wijk aan Zee 2001. But this treatment is no refutation at all. This failed attempt is discussed on nine pages (!) in his book, yet here Shaw doesn't even mention my findings.
Stigma wrote on 02/20/14 at 19:45:31:
It seems Quality Chess is really stretching their use of the 'N' symbol in some cases. Disappointing, and a case of false marketing since they can then claim their books contain that many more novelties.
"Stretching" may be one of the operative words, when it comes to this 600-page work. Let me show a little side-line (11...Qf6) from my article in
Kaissiber 33, after
1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4! d5 7.exd5 Bd6 8.d4 Nh5 9.Nc3 0-0 10.Ne4 f5 11.Ng5:
Perhaps I should explain why I chose to publish the analysis in such a condensed form, without verbal explanation. After spending three months on the analysis of the Berlin Defence, my ChessBase file had reached a considerable size - the equivalent of 130 pages printed in the
Kaissiber format. Sounds extreme, but it is actually normal practice for a theoretician. So I had to do some heavy editing. The final result were the 13-page article - which includes verbal comments and diagrams. In effect more than 90% of the variations had to go. Again: a normal process, just ask John Watson.
So anybody who criticizes me for compressing an interesting line into mere three lines, without any diagram, should consider that the space in a chess magazine of 80 pages is limited.
Now let's look at the coverage of these three lines in Shaw's book, p.85f.: