That's what Chess is all about. One day you give your opponent a lesson, the next day he gives you one
Bobby FischerCapablanca was among the greatest of chess players, but not because of his endgame. His trick was to keep his openings simple, and then play with such brilliance in the middlegame that the game was decided - even though his ooponent didn't always know it - before they arrived at the ending.
Bobby Fischer