r1bqk2r/3pb1pp/ppp5/3Bpn2/2NP1BP1/1nP4N/P3PP1P/R2K2R1 b q - 1 23
FEN state: r1bqk2r/3pb1pp/ppp5/3Bpn2/2NP1BP1/1nP4N/P3PP1P/R2K2R1 b q - 1 23 ; Best move: c6d5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at d7, black bishop at e7, black pawn at g7 and black pawn at h7. Black pawn at a6, black pawn at b6 and black pawn at c6. White bishop at d5, black pawn at e5 and black knight at f5. White knight at c4, white pawn at d4, white bishop at f4 and white pawn at g4. Black knight at b3, white pawn at c3 and white knight at h3. White pawn at a2, white pawn at e2, white pawn at f2 and white pawn at h2. White rook at a1, white king at d1 and white rook at g1. Black queenside is the only castle move available. Half move number is 1. Full move number is 23. Black to move.