1r2qb1r/p1pbk3/np2pp2/1P1p2pp/2P2PP1/NQ2P2P/P2P1RB1/R1B1K1N1 b Q - 0 17
FEN state: 1r2qb1r/p1pbk3/np2pp2/1P1p2pp/2P2PP1/NQ2P2P/P2P1RB1/R1B1K1N1 b Q - 0 17 ; Best move: a6c5
The current state of the chess board is: Black rook at b8, black queen at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black bishop at d7 and black king at e7. Black knight at a6, black pawn at b6, black pawn at e6 and black pawn at f6. White pawn at b5, black pawn at d5, black pawn at g5 and black pawn at h5. White pawn at c4, white pawn at f4 and white pawn at g4. White knight at a3, white queen at b3, white pawn at e3 and white pawn at h3. White pawn at a2, white pawn at d2, white rook at f2 and white bishop at g2. White rook at a1, white bishop at c1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 17. Black to move.