The Fortress — Recognize the Unbreakable Wall: an endgame course

A fortress needs a verified defensive setup. Connected pieces alone do not guarantee a draw.

5 lessons, each followed by its own puzzle drill, then 10 themed puzzle packs.

• What a Fortress Is — Identify exactly how the defender prevents progress.
• The Blockade Wall — Block passed pawns while covering the king’s entry routes.
• Check the Queen’s Entry Squares — Keep the defensive pieces protected against queen checks.
• The Opposite-Bishop Fortress — Use bishop color and king placement to stop the opposing pawns.
• Build One on Purpose — Compare exchanges that reach a position the stronger side cannot break.