Chess puzzle (Advantage)
Opening: Alekhine_Defense, Alekhine_Defense_Maroczy_Variation
Moves: 1. e4 Nf6 2. d3 d5 3. e5 Nfd7 4. d4 c5 5. c3 Nc6 6. Be3 cxd4 7. cxd4 e6 8. a3
Be7 9. Bb5 Qa5+ 10. Nc3 a6 11. Bd3 Qb6 12. b4 O-O 13. Nge2 Qc7 14. O-O b5 15.
Qb1 f5 16. g4 Nb6 17. Ng3 f4 *
Position (FEN): r1b2rk1/2q1b1pp/pnn1p3/1p1pP3/1P1P1pP1/P1NBB1N1/5P1P/RQ3RK1 w - - 0 18
White to move.
Themes: Kingside Attack Opening  
Puzzle rating: 1140
Best move: Bxh7+