Opening trainer
Play the book move. Wrong move snaps back.
London System
A solid pyramid with pawns on c3, d4, e3 and a bishop on f4.
white · beginner · 2 chapters
Italian Game
Giuoco Piano and the classic two-knights fights after Bc4.
white · beginner · 2 chapters
Ruy Lopez
The Spanish: Bb5, then a6 and the closed main lines.
white · intermediate · 2 chapters
Queen's Gambit
1.d4 d5 2.c4 — accepted, declined, and the Slav structures.
white · intermediate · 2 chapters
Sicilian Defense
Black's sharpest reply to 1.e4. Najdorf-shaped Open Sicilian.
black · intermediate · 2 chapters
Caro-Kann Defense
Solid 1...c6 and 2...d5. Classical and Advance.
black · beginner · 2 chapters
French Defense
1...e6 and 2...d5. Advance and Winawer sketches.
black · intermediate · 2 chapters
Queen's Gambit Declined
Black's most solid answer to 1.d4 d5 2.c4.
black · beginner · 2 chapters