Fast forward 29 years(!), to some time this past Sunday, when looking through Chess Today's daily database I came across a game between Matthias Thesing and Mihail Marin, from the new season of the Bundesliga. To my shock, Marin played 10...g6! That got my mind spinning: Maybe the position in Karpov-Korchnoi was different? Nope, same position. Maybe 10...g6 wasn't universally condemned, and Korchnoi's error, according to the commentators, came later? Nope, they all piled on against 10...g6, from the old commentators to the new - even Kasparov in My Great Predecessors (Volume 5, p. 120) joins the chorus booing 10...g6.
So what gives? Has Marin discovered something new? Was this a bluff, a one-time throwaway idea against a lower-rated player? (Thesing is a "mere" IM - a fine player in his own right but at 2393 considerably lower-rated than the 2551-rated Marin.) 10...g6 is not popular at all, but Korchnoi himself has trotted it out a couple of times since the Karpov debacle. Was I right as a kid in thinking 10...g6 was a poor move, or was this another example of seeing an unusual idea misevaluated based on the game's result?
The bottom line is that I'm not sure. I think White can gain an edge, but it's nothing fatal and the positions are more complicated than the K-K game might suggest. After reviewing a bunch of games, especially the fascinating Neeloptal-Mikhalevski encounter, I spent quite some time on 11.Nd4 Nxe5 12.f4 (a novelty, I think), and you'll find some very interesting ideas therein - most notably the queen sac 12...Nc4 13.f5! Ne3 14.fxe6!! In sum, 10...g6 is a very dangerous continuation, but it may be playable. Readers' analysis is welcomed.
Here are the games and analyses.
Related Posts (on one page):
- The Open Ruy, a la Karpov-Korchnoi, 1978 (8): An update
- Karpov-Korchnoi, Thesing-Marin, and a question: Do we know what we think we know?