rn1q3r/p2pn1b1/bp1k1p2/2p2Bp1/PPPPpP2/4PQPP/7R/RNB1K1N1 b Q - 0 16
FEN state: rn1q3r/p2pn1b1/bp1k1p2/2p2Bp1/PPPPpP2/4PQPP/7R/RNB1K1N1 b Q - 0 16 ; Best move: e4f3
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8 and black rook at h8. Black pawn at a7, black pawn at d7, black knight at e7 and black bishop at g7. Black bishop at a6, black pawn at b6, black king at d6 and black pawn at f6. Black pawn at c5, white bishop at f5 and black pawn at g5. White pawn at a4, white pawn at b4, white pawn at c4, white pawn at d4, black pawn at e4 and white pawn at f4. White pawn at e3, white queen at f3, white pawn at g3 and white pawn at h3. White rook at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 16. Black to move.