Classic chess books distilled into interactive one-position lessons you can play through on the board.
The ideas from Capablanca's Chess Fundamentals, one position at a time
You don't have to read Chess Fundamentals cover to cover. Each lesson here is one position and one idea from Capablanca's 1921 classic — play through it on the board in a few minutes, then play it out against the engine to make it stick. The course follows the book's own order: the simple mates, then pawn promotion, then the pawn endings where those ideas combine.