Chess puzzle (Advantage)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. a3 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e3 a6 6. Bd3 c5 7. b3 Nc6 8. Nge2
cxd4 9. Nxd4 Nxd4 10. exd4 h6 11. Bh4 Bd7 12. Qf3 *
Position (FEN): r2qk2r/1p1bbpp1/p3pn1p/3p4/3P3B/PPNB1Q2/2P2PPP/R3K2R b KQkq - 3 12
Black to move.
Themes: Pin Middlegame  
Puzzle rating: 1959
Best move: Qa5