1n2k2r/rb1qppb1/1p4pn/p1pp4/1PPNPP2/2B3Pp/P2PB2P/RN1QK2R b Q - 9 18
FEN state: 1n2k2r/rb1qppb1/1p4pn/p1pp4/1PPNPP2/2B3Pp/P2PB2P/RN1QK2R b Q - 9 18 ; Best move: c5d4
The current state of the chess board is: Black knight at b8, black king at e8 and black rook at h8. Black rook at a7, black bishop at b7, black queen at d7, black pawn at e7, black pawn at f7 and black bishop at g7. Black pawn at b6, black pawn at g6 and black knight at h6. Black pawn at a5, black pawn at c5 and black pawn at d5. White pawn at b4, white pawn at c4, white knight at d4, white pawn at e4 and white pawn at f4. White bishop at c3, white pawn at g3 and black pawn at h3. White pawn at a2, white pawn at d2, white bishop at e2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white king at e1 and white rook at h1. White queenside is the only castle move available. Half move number is 9. Full move number is 18. Black to move.