A free, self-paced textbook in 7 chapters. Read a chapter, then drill it with the 216 companion flashcards using spaced repetition.
Chess is a strategic two-player board game played on an 8×8 board, with each side starting with sixteen pieces: one king, one queen, two rooks, two bishops, two knights, and eight...
A chess game is conventionally divided into three phases: the opening, the middlegame, and the endgame. The opening covers roughly the first ten to fifteen moves and centers on dev...
After 1.e4 e5, the position is the classic Open Game, where both sides commit a central pawn and the resulting middlegames often feature open lines and tactical play. The Ruy Lopez...
The Sicilian Defense (1.e4 c5) is Black's most popular response to the king's pawn, producing fighting positions where Black avoids the symmetry of 1...e5 and aims for unbalanced,...
The move 1.d4, often called the Queen's Pawn opening, generally leads to closed and strategic positions where plans unfold more slowly than in Open Games. The classical cornerstone...
Strategy and tactics are the two complementary halves of chess thinking. Strategy refers to long-term planning around piece placement, pawn structure, and positional goals, while t...
Endgame play rewards precision and understanding. In king and pawn endgames, opposition arises when two kings face each other across one square (with an odd number of squares betwe...