r1bqk2r/p1pppp2/1p1n3p/n2P2p1/4PP1P/N1P5/PB1N2PR/R2QKB2 b Q - 0 16
FEN state: r1bqk2r/p1pppp2/1p1n3p/n2P2p1/4PP1P/N1P5/PB1N2PR/R2QKB2 b Q - 0 16 ; Best move: g5f4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at e7 and black pawn at f7. Black pawn at b6, black knight at d6 and black pawn at h6. Black knight at a5, white pawn at d5 and black pawn at g5. White pawn at e4, white pawn at f4 and white pawn at h4. White knight at a3 and white pawn at c3. White pawn at a2, white bishop at b2, white knight at d2, white pawn at g2 and white rook at h2. White rook at a1, white queen at d1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 16. Black to move.