Chess puzzle (Equality)
Moves: 1. d4 d5 2. Nf3 Nc6 3. e3 Nf6 4. Bd3 g6 5. b3 Bg7 6. c4 O-O 7. Nc3 dxc4 8. bxc4
Nxd4 9. Nxd4 e5 10. Nf3 *
Position (FEN): r1bq1rk1/ppp2pbp/5np1/4p3/2P5/2NBPN2/P4PPP/R1BQK2R b KQ - 1 10
Black to move.
Themes:  Opening  
Puzzle rating: 1381
Best move: e4