Play the biggest endgame first
Every boundary play has a size: the swing it produces — what it gains for you plus what it denies the opponent. The endgame skill is counting the candidates and playing them largest first, while sente endgame moves (the ones the opponent must answer) get picked up free whenever they appear, because they cost you not one move of initiative. The classic way to lose a close game: polish a tidy one-point push while a three-stone capture sits uncounted — a swing several times its size. Scan the board for liberties before you scan for pushes; captives are the biggest items on most endgame price lists. Black to play — take the biggest move on the board.