The following game shows Bronstein's deep understanding of chess.
Playing the King's Indian Defense against Igor Bondarevsky,
Bronstein exchanges what appears to be his "good" bishop.
However, it was the right decision!
Igor Bondarevsky
(1913-1979)
All credit to Bronstein, the great Teacher,
for in his comments he does not overwhelm us with variations,
but gives us very accurate descriptions of the concepts
that guided his moves in this game!