r1b2b1r/p5pp/np2p2n/2pk1p2/P7/1P1P1NP1/2PP4/RNBQKB2 w Q - 0 16
FEN state: r1b2b1r/p5pp/np2p2n/2pk1p2/P7/1P1P1NP1/2PP4/RNBQKB2 w Q - 0 16 ; Best move: d3d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at g7 and black pawn at h7. Black knight at a6, black pawn at b6, black pawn at e6 and black knight at h6. Black pawn at c5, black king at d5 and black pawn at f5. White pawn at a4. White pawn at b3, white pawn at d3, white knight at f3 and white pawn at g3. White pawn at c2 and white pawn at d2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 16. White to move.