rn2kb1r/1p3pp1/p4n1p/2pppq1P/P1PN2b1/N3P2Q/1P1P2P1/R1B1KBR1 w Q - 8 16
FEN state: rn2kb1r/1p3pp1/p4n1p/2pppq1P/P1PN2b1/N3P2Q/1P1P2P1/R1B1KBR1 w Q - 8 16 ; Best move: d4f5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at f7 and black pawn at g7. Black pawn at a6, black knight at f6 and black pawn at h6. Black pawn at c5, black pawn at d5, black pawn at e5, black queen at f5 and white pawn at h5. White pawn at a4, white pawn at c4, white knight at d4 and black bishop at g4. White knight at a3, white pawn at e3 and white queen at h3. White pawn at b2, white pawn at d2 and white pawn at g2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 8. Full move number is 16. White to move.