Chess puzzle (Advantage)
Opening: Ponziani_Opening, Ponziani_Opening_Other_variations
Moves: 1. e4 e5 2. Nf3 Nc6 3. c3 h6 4. Bc4 Nf6 5. d3 d6 6. O-O Na5 7. Qa4+ c6 8. Na3
b5 9. Nxb5 cxb5 10. Bxb5+ Bd7 11. b4 Bxb5 *
Position (FEN): r2qkb1r/p4pp1/3p1n1p/nb2p3/QP2P3/2PP1N2/P4PPP/R1B2RK1 w kq - 0 12
White to move.
Themes:  Middlegame  
Puzzle rating: 638
Best move: Qxb5+