Chess puzzle (Advantage)
Opening: Vant_Kruijs_Opening, Vant_Kruijs_Opening_Other_variations
Moves: 1. e3 e5 2. g4 d5 3. c3 Nh6 4. Be2 g5 5. Nf3 Nc6 6. h3 Be6 7. b4 e4 8. b5 *
Position (FEN): r2qkb1r/ppp2p1p/2n1b2n/1P1p2p1/4p1P1/2P1PN1P/P2PBP2/RNBQK2R b KQkq - 0 8
Black to move.
Themes:  Middlegame  
Puzzle rating: 1373
Best move: exf3