r1q1kb1r/ppp1pp2/n1P5/6Pn/PP1Pp2p/N6b/5KP1/R2Q1BNR b q - 0 16
FEN state: r1q1kb1r/ppp1pp2/n1P5/6Pn/PP1Pp2p/N6b/5KP1/R2Q1BNR b q - 0 16 ; Best move: c8f5
The current state of the chess board is: Black rook at a8, black queen at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at e7 and black pawn at f7. Black knight at a6 and white pawn at c6. White pawn at g5 and black knight at h5. White pawn at a4, white pawn at b4, white pawn at d4, black pawn at e4 and black pawn at h4. White knight at a3 and black bishop at h3. White king at f2 and white pawn at g2. White rook at a1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 16. Black to move.