Castled

Punish their opening mistakes

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London System. Play the first moves. When Black goes wrong, punish it.

Move 1 of 5
Enter a move with the keyboard

Use notation (Nf3) or squares (g1f3). Promotion: e7e8q or e8=Q.

Follow the arrow.

The arrow shows the move, Bf4. Drag the piece or tap it, then tap the square.