Principles Depend Upon the State of the Position

Dan discusses various principles and the effect the state of the position (open/locked; endgame/non-endgame; ahead/behind...) has on whether the principle applies or not, or how much it applies.

Pictured (R to L) are Coach IM Donald Byrne, friend Lester Shelton, and NM Don Sleator (?) a blind master. Circa 1968.

NM Dan Heisman has been a full-time chess instructor since 1996 and is the author of 12 chess books, the TV show "Q&A with Coach Heisman" on Chess.com and the radio show "Ask the Renaissance Man" on the Internet Chess Club. Howard Stern was one of Dan's students. Dan tries to answer comments on YouTube but for a quicker, more comprehensive answer (or questions about lessons), contact Dan via email, skype, or phone via Dan's website www.danheisman.com. His Chess Tip of the Day is @danheisman on Twitter, which won the award for "Best Twitter Feed" in 2021 from the Chess Journalists of America.