caro-kann, exchange -- sample 3: Chapter 1 at 2025.11.08
Click node to collapse/expand ·
Double-click to open in deck ·
Drag to reposition · ⌘/Ctrl+drag to move subtree ·
Scroll to zoom · R to reset← → step through cards ·
Click variation to enter · Esc to go back ·
Double-click card to open in tree · R to reset