Browsing the outstanding book Invisible Chess Moves, I came across a tactic that I loved when I first saw it, eight years ago, and which is no less striking now.
Karyakin - Kosteniuk, Brissago 2003
The 13-year old Karjakin now played the spectacular 30.Qxa6!? Black should have replied 30...Rcb8, with unclear play, but instead, Kosteniuk thought her young opponent had blundered and she went down the main line: 30...Rxc1+? 31.Rxc1 Rxa6. She had seen the point 32. Rc8+ Qe8!. But what had she missed? For an extra bonus point, which famous 1960s game, involving an ex-world champion, anticipated the same tactical idea?
Answer tomorrow.
