r1b1kbrq/p2n3p/6p1/1pp1p3/PPBQ1pPP/B1N2P2/2P2K2/R5NR b q - 1 20
FEN state: r1b1kbrq/p2n3p/6p1/1pp1p3/PPBQ1pPP/B1N2P2/2P2K2/R5NR b q - 1 20 ; Best move: c5d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8, black rook at g8 and black queen at h8. Black pawn at a7, black knight at d7 and black pawn at h7. Black pawn at g6. Black pawn at b5, black pawn at c5 and black pawn at e5. White pawn at a4, white pawn at b4, white bishop at c4, white queen at d4, black pawn at f4, white pawn at g4 and white pawn at h4. White bishop at a3, white knight at c3 and white pawn at f3. White pawn at c2 and white king at f2. White rook at a1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 20. Black to move.