Chess puzzle (Advantage)
Opening: Alekhine_Defense, Alekhine_Defense_Four_Pawns_Attack
Moves: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 g6 6. Nf3 Bg7 7. Nc3 O-O 8. Be3
Be6 9. d5 Bg4 10. h3 Bxf3 11. Qxf3 dxe5 12. fxe5 Bxe5 13. O-O-O Qc8 14. Bd4
Bxd4 15. Rxd4 c6 16. c5 Nxd5 17. Nxd5 cxd5 18. Qxd5 Nc6 19. Rf4 Nb4 *
Position (FEN): r1q2rk1/pp2pp1p/6p1/2PQ4/1n3R2/7P/PP4P1/2K2B1R w - - 3 20
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1697
Best move: Rxb4