Chess Opening Book

Chess Opening Book turns the openings you half-remember into moves you know by instinct. Choose an opening, pick a side, and practice it move by move until the line becomes second nature. Play the right move and keep going. Make a mistake, and the app takes you back to the beginning so you can reinforce the full sequence. TWO WAYS TO TRAIN • Many Reps — Learn three moves at a time. Each repetition starts from move one, helping you build the entire line into memory. • Study — See every move in the line without repetition. Ideal for learning an opening for the first time or refreshing one you already know. WHAT'S INSIDE • 30 opening lines across 20 families, from the Italian Game to the King's Indian Defence • Both sides of every line — learn to play it as White and respond to it as Black • A skill map that shows what you've learned and what is due for review • Spaced repetition that…