r1q1kbn1/2pp4/ppn3r1/P3ppp1/1P3PpP/7N/RBPP2PR/1N1QK3 b q - 3 16
FEN state: r1q1kbn1/2pp4/ppn3r1/P3ppp1/1P3PpP/7N/RBPP2PR/1N1QK3 b q - 3 16 ; Best move: g5f4
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 knight at g8. Black pawn at c7 and black pawn at d7. Black pawn at a6, black pawn at b6, black knight at c6 and black rook at g6. White pawn at a5, black pawn at e5, black pawn at f5 and black pawn at g5. White pawn at b4, white pawn at f4, black pawn at g4 and white pawn at h4. White knight at h3. White rook at a2, white bishop at b2, white pawn at c2, white pawn at d2, white pawn at g2 and white rook at h2. White knight at b1, white queen at d1 and white king at e1. Black queenside is the only castle move available. Half move number is 3. Full move number is 16. Black to move.