Grandmaster Bryan Smith teaches a chess endgame class about triangulation and related squares, and switching the player to move on the same position. Learn about zugzwang and waiting moves.

2021.11.23
Trébuchet
Luigi Centurini position
Bryan Smith vs. Nelson Castaneda, 2009
Walter Henneberger vs Aron Nimzowitsch, Swiss Championship (1931)
https://www.chessgames.com/perl/chessgame?gid=1273732
Smith vs. Dennis Wagner, 2015