1nb1kb1r/3ppp1p/r1p2np1/pq5P/P1BPP3/1PN2N2/3B1PP1/1R1Q1K1R b k - 0 16
FEN state: 1nb1kb1r/3ppp1p/r1p2np1/pq5P/P1BPP3/1PN2N2/3B1PP1/1R1Q1K1R b k - 0 16 ; Best move: b5b6
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at d7, black pawn at e7, black pawn at f7 and black pawn at h7. Black rook at a6, black pawn at c6, black knight at f6 and black pawn at g6. Black pawn at a5, black queen at b5 and white pawn at h5. White pawn at a4, white bishop at c4, white pawn at d4 and white pawn at e4. White pawn at b3, white knight at c3 and white knight at f3. White bishop at d2, white pawn at f2 and white pawn at g2. White rook at b1, white queen at d1, white king at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 16. Black to move.