2q1kb1r/1b2pp1p/r1npn3/pQpNP1p1/Pp1N3P/8/1PPPBPP1/R1BK3R b k - 4 17
FEN state: 2q1kb1r/1b2pp1p/r1npn3/pQpNP1p1/Pp1N3P/8/1PPPBPP1/R1BK3R b k - 4 17 ; Best move: e6d4
The current state of the chess board is: Black queen at c8, black king at e8, black bishop at f8 and black rook at h8. Black bishop at b7, black pawn at e7, black pawn at f7 and black pawn at h7. Black rook at a6, black knight at c6, black pawn at d6 and black knight at e6. Black pawn at a5, white queen at b5, black pawn at c5, white knight at d5, white pawn at e5 and black pawn at g5. White pawn at a4, black pawn at b4, white knight at d4 and white pawn at h4. White pawn at b2, white pawn at c2, white pawn at d2, white bishop at e2, white pawn at f2 and white pawn at g2. White rook at a1, white bishop at c1, white king at d1 and white rook at h1. Black kingside is the only castle move available. Half move number is 4. Full move number is 17. Black to move.