rnbqkb2/1p1p3p/p1p2p2/1B2p3/5PrP/P2PPnP1/1PP5/RNBQK1N1 w q - 1 16
FEN state: rnbqkb2/1p1p3p/p1p2p2/1B2p3/5PrP/P2PPnP1/1PP5/RNBQK1N1 w q - 1 16 ; Best move: d1f3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at b7, black pawn at d7 and black pawn at h7. Black pawn at a6, black pawn at c6 and black pawn at f6. White bishop at b5 and black pawn at e5. White pawn at f4, black rook at g4 and white pawn at h4. White pawn at a3, white pawn at d3, white pawn at e3, black knight at f3 and white pawn at g3. White pawn at b2 and white pawn at c2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at e1 and white knight at g1. Black queenside is the only castle move available. Half move number is 1. Full move number is 16. White to move.