r3qb1r/2p1pppp/2k4n/pp1p4/1P1P3N/P1BQ2Pb/4PP2/RN2KBR1 w Q - 0 16
FEN state: r3qb1r/2p1pppp/2k4n/pp1p4/1P1P3N/P1BQ2Pb/4PP2/RN2KBR1 w Q - 0 16 ; Best move: f1h3
The current state of the chess board is: Black rook at a8, black queen at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black king at c6 and black knight at h6. Black pawn at a5, black pawn at b5 and black pawn at d5. White pawn at b4, white pawn at d4 and white knight at h4. White pawn at a3, white bishop at c3, white queen at d3, white pawn at g3 and black bishop at h3. White pawn at e2 and white pawn at f2. White rook at a1, white knight at b1, 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 0. Full move number is 16. White to move.