Non-Standard Exchanges in Chess by GM Nadezhda Kosintseva
In a game between two world champions, Bobby Fischer trades a beautifully outposted knight for Tigran Petrosian’s slightly bad bishop – not an obvious choice, but in fact, he has traded one kind of advantage for another, opening a path to victory against an otherwise defensible position. In a super-GM battle, Mickey Adams surprisingly gives up his powerful fianchettoed bishop to impose a structural weakness in Veselin Topalov’s position. And in our third example, Topalov plays the weird-looking move … Ng4 – but he is about to demonstrate the lesson he learned in the loss to Adams from the previous example! Based on these examples, my advice to you is: Please be critical when you play the game, don’t take anything for granted, and just keep in mind that to every rule in chess there is an exception, and sometimes this exception can just make new rules.