Chess puzzle (Advantage)
Opening: Kings_Indian_Defense, Kings_Indian_Defense_Petrosian_Variation
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. d5 a5 8. O-O Na6
9. a3 Nc5 10. Qc2 Nh5 11. b4 axb4 12. Bg5 f6 13. axb4 fxg5 *
Position (FEN): r1bq1rk1/1pp3bp/3p2p1/2nPp1pn/1PP1P3/2N2N2/2Q1BPPP/R4RK1 w - - 0 14
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1816
Best move: Rxa8