Four knights - symmetrical - Metger unpin
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7
White pushes the king's pawn to e4. Black pushes the king's pawn to e5. White develops the knight to f3.
Black develops the knight to c6. White moves the knight to c3. Black moves the knight to f6.
White develops the light-squared bishop to b5. Black develops the dark-squared bishop to b4. White castles kingside.
Black castles kingside. White advances the queen's pawn to d3. Black plays the queen's pawn to d6.
White moves the dark-squared bishop to g5. Black captures with the dark-squared bishop on c3. White captures on c3 with the b-pawn.
Black deploys the queen to e7.