Chess puzzle (Advantage)
Opening: Kings_Indian_Attack, Kings_Indian_Attack_Other_variations
Moves: 1. Nf3 d5 2. g3 Nc6 3. Bg2 e5 4. O-O e4 5. Ne1 b6 6. c4 Bb7 7. cxd5 Qxd5 8. Nc3
Qg5 9. Nxe4 Qg6 10. Qa4 O-O-O 11. b4 Nd4 12. b5 *
Position (FEN): 2kr1bnr/pbp2ppp/1p4q1/1P6/Q2nN3/6P1/P2PPPBP/R1B1NRK1 b - - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1817
Best move: Bxe4