Welcome to the library. Across the table, Princess plays only
📖 book moves — the established main lines. Learn them by repetition:
master a whole line and it returns later; slip and you'll see it sooner.
Run-through: play a whole opening from move 1. Spot cards: one book move per card.
Lines after lichess opening explorer & standard ECO theory ·
reset progress 🔊 sound: on
ALL CAUGHT UP! 🦴
Nothing due in this deck right now.
Pirc Defense
SESSION COMPLETE
Lines drilled
0
Flawless
0
Promoted ⭐
0
Need work
0
🔎 Name That Opening
Which opening reaches this position?
🌳 Transposition Tree
How every line shares a trunk, then branches apart. ● ends a line; ↔ marks two move-orders reaching the same position.