Chess puzzle (Advantage)
Opening: Benko_Gambit, Benko_Gambit_Zaitsev_System
Moves: 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. Nc3 g6 6. e4 Bg7 7. e5 Nh5 8. g4 Bxe5
9. gxh5 d6 10. bxa6 Nxa6 11. Bb5+ Kf8 12. Bh6+ Kg8 13. f4 Bf6 14. Ne4 *
Position (FEN): r1bq2kr/4pp1p/n2p1bpB/1BpP3P/4NP2/8/PP5P/R2QK1NR b KQ - 2 14
Black to move.
Themes:  Middlegame  
Puzzle rating: 1434
Best move: Qa5+