Chess puzzle (Equality)
Moves: 1. f4 d5 2. Nf3 f5 3. g3 Nf6 4. Bg2 e6 5. b3 Bd6 6. Bb2 O-O 7. d3 c5 8. h3 Nc6
9. Nbd2 Qe8 10. e3 Bd7 11. Qe2 Nb4 12. O-O-O Nxa2+ 13. Kb1 Nb4 14. e4 dxe4 *
Position (FEN): r3qrk1/pp1b2pp/3bpn2/2p2p2/1n2pP2/1P1P1NPP/1BPNQ1B1/1K1R3R w - - 0 15
White to move.
Themes:  Middlegame  
Puzzle rating: 1422
Best move: dxe4