r1n1kb1r/1pp4p/n1q2pp1/3pPb2/8/N3PQPP/PP1P1KB1/R1B3NR b kq - 8 17
FEN state: r1n1kb1r/1pp4p/n1q2pp1/3pPb2/8/N3PQPP/PP1P1KB1/R1B3NR b kq - 8 17 ; Best move: a6b4
The current state of the chess board is: Black rook at a8, black knight at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at c7 and black pawn at h7. Black knight at a6, black queen at c6, black pawn at f6 and black pawn at g6. Black pawn at d5, white pawn at e5 and black bishop at f5. White knight at a3, white pawn at e3, white queen at f3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at b2, white pawn at d2, white king at f2 and white bishop at g2. White rook at a1, white bishop at c1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 8. Full move number is 17. Black to move.