Do not move the same piece twice
Step 1 of 5
Every move counts in the opening. If you move the same piece again, no new piece develops on that move, so you lose time. White's knight on f3 is already in the game. Instead of moving it again, develop the knight on b1 or the bishop on f1.
Black's knight goes out and comes back. Watch and see who loses time.
Move 0 of 10
You are playing White. Which move is better?
Task in progress
If you play Nxd4, the knight on f3 moves for the second time. Is it a good move?
Task in progress
You are playing Black. Both your knights are out. Now develop a new piece: move the bishop on f8.
Task in progress