It was clear to me that the vulnerable point of the American Grandmaster (Bobby Fischer) was in double-edged, hanging, irrational positions, where he often failed to find a win even in a won position

It so often happens that, after sacrificing a pawn, a player aims not to obtain the initiative for it, but to regain sacrificed material.

From time to time, like many other players, I glance through my own games of earlier years, and return to positions and variations which have gone out of practice. I attempt to restore them, to find new ideas and plans.

It was clear to me that the vulnerable point of the American Grandmaster (Bobby Fischer) was in double-edged, hanging, irrational positions, where he often failed to find a win even in a won position

Just as it is wrong to work on chess by studying only the first 10-15 moves, so it is wrong to play one and the same opening system, even though it be rich in variations and nuances.

The choice of opening, whether to aim for quiet or risky play, depends not only on the style of a player, but also on the disposition with which he sits down at the board.