r2q1b1r/1pp2ppp/2k1p2n/p2pn3/PPP3bP/2RP4/Q3PPP1/RNB1KBN1 b Q - 0 15
FEN state: r2q1b1r/1pp2ppp/2k1p2n/p2pn3/PPP3bP/2RP4/Q3PPP1/RNB1KBN1 b Q - 0 15 ; Best move: d5d4
The current state of the chess board is: Black rook at a8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at f7, black pawn at g7 and black pawn at h7. Black king at c6, black pawn at e6 and black knight at h6. Black pawn at a5, black pawn at d5 and black knight at e5. White pawn at a4, white pawn at b4, white pawn at c4, black bishop at g4 and white pawn at h4. White rook at c3 and white pawn at d3. White queen at a2, white pawn at e2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, 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 0. Full move number is 15. Black to move.