1nb1kbnr/r1pp1ppp/p3p3/1p2q3/2PP2P1/Q1N1PP1N/PP2K2P/R1B2B1R b k - 5 10
FEN state: 1nb1kbnr/r1pp1ppp/p3p3/1p2q3/2PP2P1/Q1N1PP1N/PP2K2P/R1B2B1R b k - 5 10 ; Best move: f8a3
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black rook at a7, black pawn at c7, black pawn at d7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at a6 and black pawn at e6. Black pawn at b5 and black queen at e5. White pawn at c4, white pawn at d4 and white pawn at g4. White queen at a3, white knight at c3, white pawn at e3, white pawn at f3 and white knight at h3. White pawn at a2, white pawn at b2, white king at e2 and white pawn at h2. White rook at a1, white bishop at c1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 5. Full move number is 10. Black to move.