Still in Book
Learn chess openings by playing them. Practice every line as White, as Black, or both, until you know it by heart.
Pick a line
Choose an opening and one of its lines, from the main line to the sharp sidelines.
Play it on the board
Make the moves yourself on a real board, with a hint whenever you need one.
Keep it in book
Challenge Mode tests you from memory, and your progress is tracked for each line and each side.
Openings
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Queen's Gambit
1.d4 d5 2.c4 · 5 lines
A popular opening where White offers a pawn to control the center.
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Sicilian Defense
1.e4 c5 · 8 lines
An aggressive response by Black to counter White's e4 and avoid symmetrical play.
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Ruy López
1.e4 e5 2.Nf3 Nc6 3.Bb5 · 5 lines
The Ruy López is one of the oldest and most respected chess openings, played for control of the center and development of key pieces.
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Italian Game
1.e4 e5 2.Nf3 Nc6 3.Bc4 · 6 lines
One of the oldest recorded openings: White develops the bishop to c4, eyeing the f7 weak point, leading to rich tactical and positional battles.
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French Defense
1.e4 e6 2.d4 d5 · 5 lines
A solid, resilient defense where Black allows White a bigger center in exchange for a sturdy pawn chain and counterplay.
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Caro-Kann Defense
1.e4 c6 2.d4 d5 · 6 lines
A solid defense to 1.e4 where Black prepares ...d5 without blocking in the light-squared bishop, trading some activity for a resilient structure.
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King's Indian Defense
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 · 4 lines
A hypermodern defense where Black lets White build a big center, then strikes back at it with pieces and pawn breaks.
One opening is open to everyone. A free account opens the rest and saves your progress.