r4br1/2q3pp/p3bk2/P2ppp2/2np4/QP5P/3NP2R/R3KBN1 b Q - 1 23
FEN state: r4br1/2q3pp/p3bk2/P2ppp2/2np4/QP5P/3NP2R/R3KBN1 b Q - 1 23 ; Best move: c4a3
The current state of the chess board is: Black rook at a8, black bishop at f8 and black rook at g8. Black queen at c7, black pawn at g7 and black pawn at h7. Black pawn at a6, black bishop at e6 and black king at f6. White pawn at a5, black pawn at d5, black pawn at e5 and black pawn at f5. Black knight at c4 and black pawn at d4. White queen at a3, white pawn at b3 and white pawn at h3. White knight at d2, white pawn at e2 and white rook at h2. White rook at a1, white king at e1, white bishop at f1 and white knight at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 23. Black to move.