r1q1kbr1/ppp1p1p1/n2p4/5p2/P2P2np/RPNQP1PP/2P1KPb1/1NB5 w q - 0 17
FEN state: r1q1kbr1/ppp1p1p1/n2p4/5p2/P2P2np/RPNQP1PP/2P1KPb1/1NB5 w q - 0 17 ; Best move: f2f3
The current state of the chess board is: Black rook at a8, black queen at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at e7 and black pawn at g7. Black knight at a6 and black pawn at d6. Black pawn at f5. White pawn at a4, white pawn at d4, black knight at g4 and black pawn at h4. White rook at a3, white pawn at b3, white knight at c3, white queen at d3, white pawn at e3, white pawn at g3 and white pawn at h3. White pawn at c2, white king at e2, white pawn at f2 and black bishop at g2. White knight at b1 and white bishop at c1. Black queenside is the only castle move available. Half move number is 0. Full move number is 17. White to move.