THE IDEA OF OJANEN (Ojasen oivallus) – e5 sac in the Benoni
The e5 sac in the Benoni defence became famous by Penrose-Tal –game (7.11.1960). However, this was not the stem game. The e5 sac was originally invented by Finnish IM Kaarle (Kalle) Ojanen. GM Eero Böök calls this variant with the name ”The Idea ...
