Chess puzzle (Advantage)
Opening: Zukertort_Opening, Zukertort_Opening_Other_variations
Moves: 1. Nf3 d5 2. e3 Nf6 3. c4 Bg4 4. Nc3 e6 5. cxd5 Nxd5 *
Position (FEN): rn1qkb1r/ppp2ppp/4p3/3n4/6b1/2N1PN2/PP1P1PPP/R1BQKB1R w KQkq - 0 6
White to move.
Themes:  Opening  
Puzzle rating: 1543
Best move: Qa4+