r1b1k3/2p2p1r/p1n1pqp1/1p1P1n1p/1P1Q3P/P2P4/2P2NP1/RNBK1B1R b q - 0 17
FEN state: r1b1k3/2p2p1r/p1n1pqp1/1p1P1n1p/1P1Q3P/P2P4/2P2NP1/RNBK1B1R b q - 0 17 ; Best move: f6d4
The current state of the chess board is: Black rook at a8, black bishop at c8 and black king at e8. Black pawn at c7, black pawn at f7 and black rook at h7. Black pawn at a6, black knight at c6, black pawn at e6, black queen at f6 and black pawn at g6. Black pawn at b5, white pawn at d5, black knight at f5 and black pawn at h5. White pawn at b4, white queen at d4 and white pawn at h4. White pawn at a3 and white pawn at d3. White pawn at c2, white knight at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at d1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 17. Black to move.