rn2k3/p3n1pr/bq2pp2/1pppb3/1P1PP1pP/P3R3/R1PNKP2/2B1QB2 b q - 0 16
FEN state: rn2k3/p3n1pr/bq2pp2/1pppb3/1P1PP1pP/P3R3/R1PNKP2/2B1QB2 b q - 0 16 ; Best move: c5d4
The current state of the chess board is: Black rook at a8, black knight at b8 and black king at e8. Black pawn at a7, black knight at e7, black pawn at g7 and black rook at h7. Black bishop at a6, black queen at b6, black pawn at e6 and black pawn at f6. Black pawn at b5, black pawn at c5, black pawn at d5 and black bishop at e5. White pawn at b4, white pawn at d4, white pawn at e4, black pawn at g4 and white pawn at h4. White pawn at a3 and white rook at e3. White rook at a2, white pawn at c2, white knight at d2, white king at e2 and white pawn at f2. White bishop at c1, white queen at e1 and white bishop at f1. Black queenside is the only castle move available. Half move number is 0. Full move number is 16. Black to move.