Learn your opening 
on the board, not from a book
Pick an opening; the machine plays the variation against you and Stockfish explains every move. Go wrong, take it back, try again.
Try it now, no sign-up
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0/5 moves
You play White. Follow the arrow and play e4: drag the piece or click it.
Not a book. An opponent.
- 1
Choose your opening
Caro-Kann, Sicilian, London… every variation of 80 openings.
- 2
Play the machine
It plays the line you chose; leave the theory and the move is taken back with the reason why.
- 3
Repeat until it sticks
Lines you play cleanly come back rarely, the tricky ones often.